CN1098140C - Generation of measurement program in NC machining and machining monagement based on measurement program - Google Patents

Abstract

The present invention relates to a method and a device for NC machining management according to a measurement program, which is characterized in that a machining shape at arbitrary machining stage is determined by an NC program to generate a geometric element or a geometric model, and then a measurement program is generated by the geometric model. When at least one process in a plurality of the processes of the NC program is finished, the measurement program is executed, and the measuring results are used as control information for machining management.

Description

Generation of measurement program in NC machining and processing management according to the measurement program

The present invention relates to the generation of a measurement program used in numerical control (NC) machining and the management of machining using the measurement program. Specifically, in NC machining in which various machining controls are realized using digital control information, the present invention relates to a measurement program for generating an NC program used in actual machining and a method for obtaining an NC program based on execution of the generated measurement program. Improved method and apparatus for process management of measurement results.

In the present invention, a measurement program as described above can be generated at any time regardless of whether an NC program is executed. The measurement program has generality so that it can be used at any time, not only for the machining being performed but also for machining using another machine tool. When an NC program is modified, the measurement program can also be modified according to the modified program.

A numerically controlled machine tool can automatically control the operation of a machine tool by inputting an NC program. Recently, a numerically controlled machine tool, which is a computer numerically controlled machine tool (CNC machine tool) combining technologies such as microprocessor technology, power electronics technology, and software technology, has been widely used in various mechanical fields.

Typically, commands such as a tool index command, a spindle rotation command, a feed rate command, axis movement/insertion commands, and an auxiliary function command are incorporated into numerical control information such as an NC program, along with machining history. Numerical control information suitable for a machine tool to be controlled is thus formed as an NC program.

An NC program generated as described above is used for various machining. However, for high-quality processing, the measurements required for processing are performed on a final processed product or during individual processing steps. Depending on the measurement results, process control compensations are carried out in a subsequent machining process of a workpiece which is then to be used or on the measured workpiece. In conventional and early measurements, the dimensions of parts are measured in part using a simple measuring instrument such as a micrometer or a vernier caliper according to a process checklist. During the final inspection phase, all critical parts of the component are measured. If there is a problem in the measurement results, it is fed back to NC machining. Reflecting the measurement results on the process control is generally realized by a skilled technician having a lot of experience through verbal notification or notes between operators. It is impossible to reflect the measurement results in real time and automatically.

Furthermore, only limited measurements can be performed using a conventional simple inspection process. Therefore, accurate measurements depend on final inspection, causing delays in recognizing problems and reducing NC machining yields.

In order to solve the above-mentioned problems, an automatic programming method for measurement is also proposed, which is used to use a pre-generated measurement program during NC machining, after sequential automatic measurement using a three-dimensional coordinate measuring instrument, in each machining process Or in the final processing, a measurement result is reflected on NC processing. According to this conventional technique, it has been possible to quickly and accurately perform predetermined measurements without requiring a skilled operator in consideration of measurements performed by itself.

However, this conventional automatic programming is realized by CAD or CAM through complex processing using material data, final workpiece formation data, tool data, and the like. Therefore, this conventional automatic programming cannot be used in all NC machining, and it requires a large-scale machine. Also, it is seldom used except in cases where a large number of products are machined with one and the same NC program.

Also, a measurement program by the automatic programming is generated based on final product formation data, in particular, based on a process drawing. Therefore, it is not possible to provide a measurement program that is optimal for a workpiece shape in a work element, in a machining element, or during a machining process in an arbitrary step during actual execution of the NC program.

The processing elements here refer to a group of operation elements performed at a processing position of a workpiece. In other words, a work element refers to a single process performed by a tool. A processing element means that processing is completed by combining several operation elements performed on a processing position of a workpiece. For example, in threaded hole drilling, a machining element is defined as a combination of drilling a center hole, preparing a hole, and tapping. In this specification, a machining process refers to a series of overall machining operations performed without changing the posture of a workpiece fixed on a machine tool.

In the recent trend of NC processing. The NC programs to be used are as open and flexible as possible. In actual processing, the program is often modified in order to obtain the best processing method. Each program is made into a module or has more generality to make it possible to change the program without restriction. As a result, a conventional machining program strictly determined by a machining chart cannot be applied to steps in a machining process, actual work elements or machining elements, and thus cannot be applied to recently existing NC machine tools.

Also, recently existing NC machining implements CIM (Computer Integrated Manufacturing) using not only a single machine tool but also a combination of other machine tools. In such a case, a conventional fixed measurement program can neither be applied to other machine tools nor systematically learned to be suitable for other machine tools.

The present invention has been made in consideration of the above conventional problems. The purpose is to generate a measurement program by analyzing an actual machining program rather than relying on machining drawings. The purpose is also to provide a new method for reflecting a measurement result obtained through the measurement program on the processing control of NC processing.

To achieve the above object, the present invention analyzes an NC program, extracts a workpiece shape of each step of an actual processing set in the NC program as a geometric model, and generates a measurement program based on the geometric model.

When running such a measurement program, a real-time measurement result can be obtained during processing so that the result can be quickly reflected on subsequent processing. Therefore, a modified machining program can be quickly used.

Furthermore, according to the present invention, if a machining program is revised, a measurement program is also revised according to the new machining program. The advantage is that an NC program and a measurement program can always be correlated and run during actual machining or before subsequent machining steps. In NC machining in which machining control is performed by an NC program, an aspect of the present invention includes a workpiece shape information extraction unit for extracting information about each operation element machining, machining element machining, or machining processing by analyzing the NC program. information on a workpiece shape in an arbitrary step of processing, a geometric model generating unit for generating a geometric model for an arbitrary step based on the workpiece shape information, and a measurement program generating unit for generating a geometric model based on the geometric model a measurement procedure.

In an NC machining process in which machining control is performed by an NC program, another aspect of the present invention includes a dividing unit for dividing the NC program in each work element machining or machining element machining by analyzing the NC program ; A processing element extraction and coordinate system moving unit, used to extract the workpiece shape information processed by each operation element divided by the division unit or processed by the processing element; a geometric model generation unit, a measurement path generation unit, used for according to the geometry The model determines a measurement path; and a measurement program generation unit is used to generate a measurement program according to the measurement path.

According to yet another aspect of the present invention, a process controller for executing the measurement program described in claim 1 includes a measurement result analysis means for using a measurement result obtained by Obtained by executing the measurement program at the end of at least one of the processes specified in the NC program.

In NC machining in which machining control is performed by an NC program, still another aspect of the present invention includes a step of extracting workpiece shape information for extracting information about each operation element machining, machining element machining, etc., by analyzing the NC program. , or information on the shape of a workpiece in an arbitrary step of processing processing; a geometric model generating step for generating a geometric model of a workpiece in an arbitrary step based on the workpiece shape information; and a measurement program generating step for generating a geometric model based on the geometric The model generation-measurement program.

In NC machining in which machining control is performed by an NC program, still another aspect of the present invention includes a step of dividing the NC in each work element machining or machining element machining by analyzing the NC program. Program; processing element extraction and coordinate system moving step, used to extract the workpiece shape information of each operation element processing or processing element processing divided in the above steps; geometric model generation step, used to generate a three-dimensional coordinate according to the workpiece shape information The geometric model in the system; the measurement path generation step is used to determine a measurement path according to the geometric model; and the measurement program generation step is used to generate a measurement program according to the measurement path.

According to yet another aspect of the present invention, a machining control method for executing the measurement program described in claim 4 uses a measurement result determined by several values determined in the NC program as machining control information. obtained by executing the measurement program at the end of at least one of the processes.

In the processing control method described in claim 6, the present invention generates a shape model based on a measurement result and provides the model as processing control information for a subsequent processing

In a method as claimed in claim 6 or 7, the invention provides tolerance data to the measurement program.

The present invention is also a medium for storing a program storing: a workpiece shape information extraction program for extracting information about an arbitrary step in work element processing, processing element processing, or processing processing by analyzing the NC program Information about the shape of a workpiece; a geometric model generation program for generating a geometric model of a workpiece in an arbitrary step according to the workpiece shape information; and a measurement program generation program for generating a measurement program based on the geometric model.

Furthermore, the present invention is also a medium for storing a program for executing processes using the measurement results obtained by the measurement program described in claim 4 as a process control method.

Fig. 1 is a block diagram showing the overall configuration of a numerical control system incorporating measurement program generation and process control related to the present invention.

Fig. 2 is a block diagram of a measuring program generating device related to the present invention.

FIG. 3 is a block diagram of a workpiece shape information extraction unit related to the present invention in the system shown in FIG. 2 .

4A, 4B and 4C are exemplary lists showing actual machining programs used in the embodiment of the present invention.

Figure 5 is a schematic illustration of exemplary material shapes used in embodiments of the present invention.

Fig. 6 is a schematic diagram of a final workpiece shape used in this embodiment.

Fig. 7 is a list of tools used in this embodiment.

8A to 8C are a list of expanded G codes derived from the actual machining NC program in this embodiment.

FIG. 9 is an explanatory diagram of a program analysis method, tools to be used, and work elements among processing elements related to the present invention.

Fig. 10 is a list of illustrative job elements.

Fig. 11 is an explanatory schematic diagram of an example of definition of a processing pattern in this embodiment.

Fig. 12A is an explanatory view of the relationship between two coordinate systems after a workpiece is mounted on a machine tool.

Fig. 12B is an explanatory view of a coordinate system in Fig. 12A in relation to the actual workpiece shape.

Fig. 13 is an explanatory view of the relationship between the other two coordinate systems on the machine tool.

Figure 14 is a list of coordinate systems.

Fig. 15 is a schematic diagram of an illustrative geometric element parameter list.

Fig. 16 is a schematic diagram of a geometric element directory.

Fig. 17 is an explanatory view of a CSG primitive library.

FIG. 18 is an explanatory view of the relationship between these CSG primitives.

Fig. 19 is an explanatory view of a geometric element CSG library.

Fig. 20 is an explanatory view of an element measurement path library.

Fig. 21 is an explanatory view of an interference check.

FIG. 22 is a list of interference checks shown in FIG. 21 .

Fig. 23 is an explanatory view for determining a safety zone of a measurement route.

Fig. 24 is a schematic diagram of a tolerance table used in forming a measurement program.

25A to 25F are schematic diagrams of an example of a measurement program generated by the present invention.

Fig. 26 is an explanatory diagram of measurement program execution and measurement result analysis related to the present invention.

FIG. 27 is a schematic diagram of the measurement data flow shown in FIG. 26 .

FIG. 28 is a schematic diagram of an exemplary measurement result.

A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.

Fig. 1 shows the overall configuration of a numerically controlled machine tool system using the measurement program generation and processing management method related to the present invention.

An NC program is generated in the same manner as a conventional NC program using material data and final part shape information. In Figure 1, material data includes the shape of the material and its material. The NC program generation device 20 uses input material data and final part shape, as well as previously stored know-how data provided by a plurality of databases. In this embodiment, these databases include an operation deployment database 21 , a cutting condition database 22 , a tool database 23 and a machining history database 24 . The NC program generating device is provided with reference data for NC program generation through these databases, such as know-how at a station, a description of a station, conditions required for actual machining, and specific conditions of a machine tool to be used.

The NC program and a tool catalog generated as described above are sent to a digital controller 25, and the data word controller 25 performs the required drills, test cuts or simulations. After modification and editing of the NC program (not shown in FIG. 1 ), an actual machining NC program to be finally used at the station is completed in the numerical controller 25 .

The numerical controller 25 includes NC program execution means 27 , servo control means 28 , and error compensation means 29 , all of which are used to drive a machine tool 26 . The NC program, tool catalog and material data are input to the NC program execution device 27 . The NC program executing means 27 executes the interpolation process based on an appropriate feed operation determined by the input data with reference to the measurement results to be described later. The NC program execution device provides a servo control signal to the servo control device 28 . The NC program execution device can execute feed control of the machine tool 26 by an output drive signal supplied from the servo control device 28 according to the NC program. The error compensation device 29 is used to compensate the position error caused by the workpiece size error and the thermal expansion of the machine tool 26. Errors etc. are compensated.

As described above, according to the NC program, the machine tool 26 performs desired work element processing, processing element processing, and processing processing on the workpiece 30 placed on a table, and completes processing on the workpiece 30 in the first posture.

After completing the processing of the workpiece 30 in the first posture, a measuring instrument 31 measures the coordinate system of the workpiece 30 according to a measurement program in a measurement controller 32 . The measurement results are fed back to the NC program execution device 27 in the numerical controller 25 through the measurement result analysis device 33 for subsequent processing. The measurement results are also provided to the respective databases 21, 22, 23 and 24 if required. As described above, according to the embodiment shown in FIG. 1 , desired numerical control machining can be performed on the workpiece 30 according to the generated NC program. After machining is performed on the workpiece 30 in the first posture, the posture of the workpiece 30 is changed to the second posture, and the workpiece in the second posture is processed according to the NC program.

The present invention is characterized in that the measurement program supplied to the measurement controller 32 is generated using the actual machining NC program supplied to the numerical controller 25 . Therefore, a workpiece shape information extraction unit 23, a geometric model generation unit 35, and a measurement program generation unit 36 are provided for this purpose.

The workpiece shape information extraction unit 34 is supplied with a tool catalog and an actual machining NC program output from the NC program generation device 20 . By analyzing the NC program based on these input data, workpiece shape information of an arbitrary step of each work element machining, machining element machining, and machining processing machining is extracted. The extracted workpiece shape information is converted into a three-dimensional geometric element or a geometric model in the arbitrary step by the geometric model generating unit. For the geometric element or geometric model, the measurement program generation unit 36 can generate an optimal measurement program by selecting a measurement path from predetermined measurement paths. As is apparent from FIG. 1 , the measurement program generated as described above is supplied to the measurement controller 32 while the geometric model generated by the geometric model generation unit 35 is supplied to the measurement result analyzing means 33 . The measurement catalog generated by the measurement program generating unit 36 is also supplied to the measurement result analyzing means 33 . In the present invention, not only the above-mentioned machining catalog and NC program but also material data and final part shape are supplied to the workpiece shape information extraction unit 34 . In this case, a safer and simpler determination of the movement path of a measuring probe can be achieved.

Therefore, according to the invention, the measurement program is always related to the actual machining NC program. This enables an optimum measurement program to be obtained in response to an NC program to be used in actual machining. Measurement results obtained by using such a measurement program are always provided to the digital controller 25, enabling process control in response to the results.

FIG. 2 shows a detailed configuration of a measurement program generation unit of the numerically controlled machine tool system (shown in FIG. 1 ). In this embodiment, measurement is performed by defining a machining element on which NC machining is being performed as a unit of measurement. A measurement timing is determined as the time at which a processing element is obtained after completing a series of processing steps of a work element. Naturally, the measurement can be performed at the time when the processing of a plurality of processing elements has been carried out is completed. In the actual measurement program, the measurement timing is when several processing elements are completed or when a processing process is completed.

In FIG. 2 , the NC program 40 is supplied to the NC program analyzing unit 41 in the workpiece shape information extracting unit 34 . The NC program analysis unit 41 first divides the NC program into parts classified by work elements using the NC program 40 and tool data respectively provided. The NC program analysis unit 41 supplies work element information to a machining element extraction unit 42 . In this machining element extracting unit 42, some machining elements used in this NC program are extracted and combined with work elements and output. The NC program analysis unit 41 also supplies coordinate data used in the NC program to a coordinate system shifting unit 43 so that the coordinate system generated for NC machining is moved into a three-dimensional coordinate system for measurement. The extracted processing element catalog or the moved coordinate system is provided to the geometric element generation unit 44 in the geometric model generation unit 35, so that the processing elements determined by the NC program are moved and used as geometric elements in a common three-dimensional coordinate system is output. In this embodiment, the geometric elements are further combined into a geometric model by the geometric model generation processing unit 45 . The combined model is supplied to the measurement program generation unit 36 . In the present invention, transformation into a geometric model is not necessary, and the geometric elements output from the geometric element generation unit 44 may also be directly supplied to the measurement program generation unit 36 . Also, the geometric model 46 generated by the geometric model generation processing unit 45 is supplied to the measurement result analyzing means 33 as shown in FIG. 1 .

The measurement program generation unit 36 is provided with a geometric model or a geometric element catalog as well as probe information 47 from the measuring instrument 31 , tolerance information 48 and other required information 49 . Based on these input information, a measurement program 50 is generated and supplied to the measurement controller 32 shown in FIG. 1 .

FIG. 2 illustrates an outline procedure for generating a measurement program 50 from the NC program 40 . In the following description, details of these processes will be explained in detail.

Extraction of operation elements and processing elements

First, the details of the NC program analysis unit 41 for extracting work elements will be described with reference to FIGS. 3 to 11 .

FIG. 3 shows details of the NC program analyzing unit 41 related to the present invention in the workpiece shape information extracting unit 34 (FIG. 2). The NC program analysis unit 41 is provided with an actual machining NC program and a tool catalog as described above. Material data and final workpiece shape are also provided if required.

In the NC program analysis unit 41 , input data are stored in a storage device 60 . The actual NC program is analyzed block by block, and the data is converted by a digital data conversion unit 61 . These data are input as a G code expansion list through the G code expansion list generating unit 62 . At this time, a plurality of operations are included in one block, such as the case of a macro program or several subroutines. They are expanded into basic commands according to the RS-274-D format and then entered into the G-code expansion table. Expanding to G-code is not required by the invention. However, they are expanded into G-codes for easier interpretation to process the actual machining NC program by computer.

In the program analysis unit 41, the entire actual machining program is divided into several operation elements related to the G-code expansion list by the division unit 63.

The NC program is divided into operation elements by the division unit 63. Processing is preferably performed on a serial number (N number), tool index (T code), tool replacement (M6) and random stop (M01). In practice, the program can be divided into job element machining by first focusing on tool change execution. During a tool change, a tool is used. It is utilized as a job element interval. However, it is preferable to reliably perform division into work element machining by reading a tool's path pattern and tool change, because multiple work element machining steps can be performed with one or the same tool, such as drilling multiple preparation holes with one drill Case.

4A to 4C show an example of an actual machining NC program added with a program number O0001 used in this embodiment.

FIG. 5 shows the shape of a material to be machined by the actual machining NC program, and FIG. 6 shows the shape of a final workpiece to be machined from the material shown in FIG. 5 by the actual machining NC program. These material data (including the texture of the material) and the final workpiece shape are supplied to the NC program analysis unit 41 . As is apparent from FIG. 6 , in this machining, it is necessary to perform upper face milling, side milling, machining two screw holes on the front, drilling four chamfered holes on the upper side, and groove machining.

For such machining, the NC program generation unit 20 determines the machining process, develops the process into work elements, decides tools to be used in each work element, and determines cutting conditions for each tool.

Fig. 7 shows a tool directory used in program O0001. Each tool number is shown as a T-code, and data about each tool is listed as shown in FIG. 7 . This tool catalog is supplied to the NC program analysis unit 41 .

In the program analyzing unit 41, the actual machining NC program is stored in the storage device 60, and converted into a G-code expanded list that is easier for a computer to analyze through the digital data converting unit 61 and the G-code expanded list generating unit 62. In Figs. 8A to 8E, a list of the actual machining NC program O0001 expanded into G code is shown. The actual machining NC program and G code directory are listed by line number, and their contents are basically the same.

The actual machining NC program in this embodiment is divided into 9 sequences to which sequence numbers 1 to 9 are appended. The 9 sequences were categorized as operations using different tools. In this embodiment, even if one and the same tool is used, if the tool is used to process different positions of the material. It is also identified as a different job element. In this case, the program is divided into several work elements according to the machining path of the tool. However, for simplicity of description, an example of extraction of processing conditions is shown for the element processing of each operation in each of the nine sequences.

Analysis of job elements in N1

T1 in row 4 is selected, and M6 in row 5 (tool change) is performed. Thus, it can be understood that up to line 7, M6 (tool change) is commanded and tool T1 is used for machining. In this embodiment, a set of such lines in the program is expressed as sequence N1. However, it is obvious that this sequence is meaningless for tools in the actual processing of NC programs.

It can be understood from the T code 1 of the tool catalog shown in Fig. 7 that the tool T1 is a face milling cutter with a diameter of 100mm. Line 7 specifies a machining coordinate system G54. In this embodiment, the coordinate system G54 shows the upper face of the final workpiece shape shown in FIG. 6 . The above process is defined as processing in the first process.

In row 10, the workpiece is sent out for the first cutting feed, and the face to be cut is Z=0.1 (row 9). The point where the face mill should drop has the Z, X, Y coordinate values specified by line 7 (160, 50). Lines 10 to 13 show that the axis of movement of the tool moves alternately, eg X, Y, X, Y, while the Z coordinate value remains constant. By comparing such a tool path pattern with definition data stored in the pattern definition storage unit 64, the work element can be judged as machining on a plane. In FIG. 9, a graphic definition example of a work element, a tool to be used, and a program analysis method, which are all used for the processing element, is shown. Using such a graph to define and execute identification of work element processing.

In FIG. 10, an example of a work element list is shown. In this embodiment, these work elements are supplied to the processing element extracting unit 42 and the coordinate system moving unit 43 .

Of course, the work elements shown in FIG. 10 are just examples, and the definition of not only relatively large work elements but also work elements divided into smaller elements is preferable in the present invention. The level of work element definition can be arbitrarily set in response to the accuracy of a machine tool or the resolution of the entire machining system.

Further analysis of the program for sequence N1 results in lines 10, 11 and 12 showing the same paths as in lines 15, 16 and 17, except for the Z coordinate value. Therefore, it can be understood that rows 15, 16, and 17 represent finishing operations since there are no later work elements using the same tool.

Rows 19 to 30 are judged to represent the second machining process because they use a coordinate system G55 which is a coordinate system for machining on the front face of the final workpiece shape in this embodiment shown in FIG. 6 . Rows 22, 23, and 24 represent the same paths as in Rows 27, 28, and 29, except that the Z coordinate values are different, and the difference between the Z coordinate values is 0.1. Therefore, rows 22, 23, and 24 are judged to represent roughing, while rows 27, 28, and 29 are judged to represent finishing. Moreover, since the cutting area covers the entire workpiece, it is judged to be a plane machining element.

Next, the analysis of the work elements in the sequences N2 to N9 will be explained succinctly.

Analysis of job elements in N2

In row 31 the master tool is changed to T2 and the process proceeds to the job element in N2. As can be seen from the tool catalog in Figure 7, T2 is identified as a center drill with a diameter of 3mm. As a result, the work elements in N2 are determined to be drilling, and five work elements in the next first machining process and two work elements in the second machining process are extracted.

First processing (G54)

Position 1 (70.000, 50.000), Position 2 (-70.000, 50.000)

Position 3 (-70.000, 50.000), Position 4 (70.000, -50.000)

Position 5 (30.000, 0.000)

Second processing (G55)

Position 1 (40.000, 0.000), Position 2 (-40.000, 0.000)

Analysis of job elements in N3

In row 47, the master tool is changed to T3 and the process proceeds to the job element in N3. As can be seen from the tool catalog in Figure 7, T3 is identified as a drill with a diameter of 20 mm. As a result, the work element in N3 was determined to be drilling, and the following five work elements were extracted.

First processing (G54)

Position 1 (70.000, 50.000), Position 2 (-70.000, 50.000)

Position 3 (-70.000, 50.000), Position 4 (70.000, -50.000)

Analysis of job elements in N4

In row 57 the main tool is changed to T4 which is a 30mm diameter drill. As a result, the work element in N4 is determined to be drilling, and the following 4 work elements are extracted.

First processing (G54)

Position 1 (30.000, 0.000, -19.9), Position 2 (-70.000, 50.000)

Position 3 (-70.000, -50.000), Position 4 (70.000, -50.000)

Analysis of job elements in N5

In row 68 the main tool is changed to T5, a 25mm diameter end mill.

End mills and face mills often have a variety of machining patterns that they can handle. Therefore, it is not easy to simply determine what work element to extract from the tool to be used. However, in the present embodiment, the determination is performed by comparing a tool machining path with the machining pattern definition by the division unit 63 and the machining element extraction unit 42 . Some examples have been shown here for the case of face mills and drills. Furthermore, FIG. 11 shows an example of the correlation between these processing pattern definitions and processing elements.

Now, return to the job element in sequence N5. Rows 71 to 74 show that the tool has dropped onto the side to be machined at position (30.0,0) in machining process 1 (G54). Lines 75 to 81 represent movement on one side. Since the location in row 75 (-50.0, 0) is the same as the location in row 80 (-50.0, 0), it can be determined that the movement has a closed path. Also, lines 75 to 80 represent the interior of the path, since at line 75 the left offset for G41 is specified. The path in G41 moved inward from the above path by the radius of the tool is set from which the path moved further by the radius of the tool is found. In this case, the path has been eliminated. From these toolpaths, when the tool moves as indicated by rows 75-80, there is no residual cut left inside. Therefore, it is judged as a pit processing element. This is a pattern using an end mill in the pit machining element shown in the machining pattern definition in FIG. 11 . As described above, using the graph definition in FIG. 11, program analysis must be performed on a compound program such as the above.

Movement of the tool in row 75 is judged to be approaching the workpiece, while movement in row 81 is judged to be away from the workpiece. The amounts of approach and exit are stored in a graphic directory of the pit machining element shown in FIG. 12 .

Row 82 shows the movement up from the workpiece face, while row 83 shows positioning to position (40,0) in the second machining pass. Rows 86 to 88 show movement on one side. Row 87 shows movement along a circular path. Row 86 shows the compensation of G41 to the left for this circular path. As above, and it is determined to show the interior of the path. The path in G41 moved from the circular path across the radius of the tool is shown, from which the path moved over the radius of the tool is then derived. However, as shown by Decision 1, this path has been eliminated. Therefore, it is determined that there is no residual cutting amount remaining inside and it is determined as a one-pit machining element. Since the workpiece has been machined at the center position of the pit machining elements in sequences N2 and N4 and the shape of the pit is a circle, it is finally determined to be a drilling element. As described above, the identification of work elements may be performed using the machining pattern definition for sequence 5 .

Analysis of job elements in N6

Row 97 shows that the master tool has been changed to T6, a 25mm diameter end mill.

The movement of rows 105 to 018 is done on one side, and the positions in rows 105 to 108 are the same. Therefore, the movement is judged to have a closed path. The path and several tools are compared with decision 1. As a result, if there is no remaining cutting amount inside, it is judged to be a one-pit machining element. Its path is the same as in sequence N5. Therefore, it is judged as a finishing machining, and the machining of the work element 1 in the sequence N5 is judged as a rough machining. It can also be determined that the points in rows 105 and 108 represent a final shape.

Analysis of job elements in N7

Row 111 shows that the main tool is changed to T7, which is a drill bit with a diameter of 8.2 mm. Therefore, the sequence N7 is judged as a drilling element, and the following work elements are extracted.

First processing (G55)

position 1 (40.000, 0.000)

Position 2 (-40.000, 0.000)

Analysis of Operation Elements in N8

Line 119 shows that the main tool has been changed to T8, a chamfering tool with a diameter of 25 mm. The chamfer tool is fixed by a fixed drilling cycle in G81 while the Z coordinate value increases as shown in lines 124-128. Therefore, the operation element in N8 is judged to be a drilling element.

First processing (G54)

position 1(70.000, 50.000),

Position 2 (-70.000, 50.000)

Position 3 (-70.000, -50.000)

Position 4 (70.000, -50.000)

Second processing (G55)

position 1 (40.000, 0.000)

Position 2 (-40.000, 0.000)

Analysis of job elements in N9

Line 134 shows that the main tool is changed to T9, which is an M10 screw tap. Therefore, the operation element in sequence 9 is determined to be a drilling element.

First processing (G55)

position 1 (40.000, 0.000)

Position 2 (-40.000, 0.000)

As described above, the actual machining program is sequentially analyzed, divided into several work elements, and the work elements are extracted.

As described above, the NC program is divided into several work elements. The analysis results of the actual machining NC programs shown in Figs. 4A to 4C are briefly summarized here for some operating elements. Before sequence N1, a groove on face G54 in FIG. 6 has a top face of -Z=0. The face is cut twice at Z=0.5 and Z=0. Since it is deeper at Z=0, this face is extracted as the job element. In the middle of sequence N2, a central hole is drilled on the face where X=30 and Y=0. Therefore, it can be understood that a central drilling element is generated here.

The above work elements can also be applied to the following work elements in the same manner.

In the first half of sequence N4, it can be recognized that a preparation hole is drilled in the center of the work element formed above and a hole work element is being formed therein.

In the first half of sequence N5, a groove is machined and it can be recognized that the element of groove work has been completed.

Also, in sequence N6, a finishing grooving is performed, and it can be recognized that a grooving work element has been formed.

As described above, in the NC program analysis unit 41, the NC program 40 is analyzed by dividing it into several work elements.

These work elements divided and analyzed as described above are converted into a processing element list by the processing element extraction unit 42 . In fact, it is better to perform measurements during NC machining in terms of machining elements rather than job elements. This is because the processing to generate a shape at a position of the material is completed by completing a processing element.

Based on the plurality of work elements described above, operations are concentrated on a processing element by classifying according to a position to be processed and a type of tool. The relationship between work elements can be understood from the order of processing in this program. If a central operation element and a hole operation element are taken as an example among the plurality of operation elements. It can be recognized from their positions to be processed that no central work element needs to be considered for this work element and only the hole work element is extracted. Also, it can be appreciated that for multiple grooving elements, if the grooving operations are performed at a location, only the last grooving operation is extracted as the machining element.

As described above, a processing element list necessary for measurement is extracted by the processing element extracting unit 42 and supplied to the geometric model generating unit 35 .

coordinate movement

Even if the processing element list is obtained as described above, it cannot be used in a measurement program by itself. In other words, in an NC program, the machining coordinate system is related to the posture of a workpiece fixed on a pallet. For example, if it is not on the pallet of the machine tool, the shape of the workpiece shown in Fig. 6 is actually shown as in Fig. 12A. Furthermore, the machining performed on its upper surface is shown by the coordinate system G54. The machining performed on its front surface is represented by the coordinate system G55. In the machining program, machining in G54 and G55 is performed by changing the attitude of the workpiece on the pallet or changing the reference surface of the tool. As a result, the coordinate system processed surface of this machining is different from the coordinate system surface of the actual workpiece shape shown in FIG. 12B. In machining by the NC program of this embodiment, the upper and front surfaces of the shape shown in FIG. 6 are machined on the same carriage and in the same machining process. However, this is for processing convenience, and it differs from the relationship between the geometric positions of the upper and front surfaces of the actual shape shown in FIG. 12B. As shown in FIG. 12A , in the machining program, the coordinate values of the upper surface are based on the coordinate system G54, and the coordinate values of the front surface are based on the coordinate system G55. In other words, the coordinate system G55 is obtained by simply moving the coordinate system G54 in parallel in the XYZ directions. However, the coordinate system G54 of the actual workpiece shape is obtained by moving in parallel in the XYZ directions plus turning G54, as shown in FIG. 12B. The matrix expression for this shift is described by Equation 1

Rotation Parallel movement $\left[\begin{array}{c}x55\\ Y55\\ \mathrm{<figure-callout\; id="55"\; label="Z"\; filenames="C96180188.300501.png"\; state="\{\{state\}\}">Z</figure-callout>}55\\ 1\end{array}\right]=\left[\begin{array}{cccc}1& 0& 0& 500\\ 0& 1& 0& -50\\ 0& 0& 1& 0\\ 0& 0& 0& 1\end{array}\right]\left[\begin{array}{c}x54\\ Y54\\ \mathrm{<figure-callout\; id="54"\; label="Z"\; filenames="C96180188.300501.png"\; state="\{\{state\}\}">Z</figure-callout>}54\\ 1\end{array}\right]$ on the workpiece shape $\left[\begin{array}{c}x55\\ Y55\\ \mathrm{<figure-callout\; id="55"\; label="Z"\; filenames="C96180188.300501.png"\; state="\{\{state\}\}">Z</figure-callout>}55\\ 1\end{array}\right]=\left[\begin{array}{cccc}1& 0& 0& 0\\ 0& 1& 0& 60\\ 0& -1& 1& -80\\ 0& 0& 0& 1\end{array}\right]\left[\begin{array}{c}x54\\ Y54\\ \mathrm{<figure-callout\; id="54"\; label="Z"\; filenames="C96180188.300501.png"\; state="\{\{state\}\}">Z</figure-callout>}54\\ 1\end{array}\right]$ on the actual part

Therefore, in the coordinate system transformation unit 43, coordinate system transformation between the NC program coordinate system and the actual shape coordinate system is performed as shown by the above coordinate system transformation, and the transformed coordinate system is supplied to the geometric model generation unit 35 The geometric element generation unit 44 .

In FIG. 2 , the coordinate system 51 of the machine tool is input to the coordinate system conversion unit 43 . It is effective when the position of the workpiece on the carriage becomes arbitrary due to a change in machining process (occasionally occurring depending on the machining program used). In such a case, the coordinate system of the machine tool is input and coordinate system transformation in response to the shape of the workpiece can be efficiently performed.

For example, when coordinate systems G56 and G57 are set on a single workpiece as shown in FIG. 13 (different from the workpiece shape in FIG. 6), the two coordinate systems are obtained by simply moving parallel to each other. Therefore, by calculating the relative positions of the two, the transformation of the coordinate system is easily realized, and a better coordinate system transformation formula is shown below.

Formula 2 $\left[\begin{array}{c}x56\\ Y56\\ Z56\\ 1\end{array}\right]=\left[\begin{array}{cccc}1& 0& 0& 50\\ 0& 1& 0& 40\\ 0& 0& 1& 0\\ 0& 0& 0& 1\end{array}\right]\left[\begin{array}{c}x57\\ Y57\\ Z57\\ 1\end{array}\right]$

In-process measurements are usually taken at the end of a process. In some cases, the workpiece is moved from the machine tool to a measuring instrument. In these cases, the workpiece can be fixed on a table of the measuring instrument in any orientation. Therefore, the measuring instrument does not know how to place the reference coordinate system in any one of the coordinate systems G54 and G55 shown in FIG. 12A, eg, G54. Therefore, the measuring instrument uses a program to measure the geometric elements required to obtain G54 as the reference coordinate system to generate a conventional survey program. In this way, the measuring instrument knows the position of the coordinate system G54, and stores the relationship between its own coordinate system (instrument coordinate system) and the coordinate system G54. As a result, it is possible to move a probe according to the coordinate system G54 because the coordinate values of the shape and dimensions of the part are based on the coordinate system G54. The measuring instrument may provide such data to a measuring program during actual measuring operations. The coordinate system movement formula used in such a measuring instrument is shown below:

Formula 3

G54 machining CS1 instrument coordinate system $\left[\begin{array}{c}x54\\ Y54\\ \mathrm{<figure-callout\; id="54"\; label="Z"\; filenames="C96180188.300501.png"\; state="\{\{state\}\}">Z</figure-callout>}54\\ 1\end{array}\right]=\left[\begin{array}{cccc}{u}_{11}& u_{12}& u_{13}& o_1\\ u_{\mathrm{twenty\; one}}& u_{\mathrm{twenty\; two}}& u_{\mathrm{twenty\; three}}& o_2\\ u_{31}& u_{32}& u_{33}& {\mathrm{<figure-callout\; id="3"\; label="o"\; filenames="C96180188.300471.png,C96180188.300501.png"\; state="\{\{state\}\}">o</figure-callout>}}_3\\ 0& 0& 0& 1\end{array}\right]\left[\begin{array}{c}{x}_m\\ Y_m\\ {\mathrm{<figure-callout\; id="1"\; label="Z\; m"\; filenames="C96180188.300471.png,C96180188.300501.png"\; state="\{\{state\}\}">Z</figure-callout>}}_m\\ 1\end{array}\right]$ Once a reference frame, such as G54, is known, the coordinate G55 can easily be shown through this reference frame G54. Fig. 14 shows the relationship between the two coordinate systems. The coordinate system G55 stores the relative position of the reference coordinate system G54 as a parameter. The reference coordinate system G54 can also be obtained by inputting parameters previously obtained by the formula into the formula 3. Equation 3 represents a calculation between the coordinate system G54 and the instrument coordinate system fixed on the measuring instrument.

In actual measurement, the measuring device places the part at a fixed position using a jig, measures the reference coordinate system G54 once and then stores G54. Individual measurements of G54 in each shape are omitted.

Generation of geometric models or catalogs of geometric elements

As described above, the machining element list and the coordinate system movement data are supplied to the geometric element generation unit 44, and a geometric element list is generated based on the input information.

Fig. 15 shows an example of a geometric element parameter list. A chamfered tooled hole, a stepped hole, a stepped threaded hole, a groove and a circular groove are shown by the coordinate values of the dimensions shown in part in FIG. 15 and the center P. The geometric element parameter catalog of the workpiece shape is thus generated.

These geometric elements are stored together with the coordinate system (G54 and G55 in this embodiment) as a geometric element list shown in FIG. 16 . Using this directory, the position of a geometric element in the coordinate system can be shown precisely.

Therefore, using the geometric element catalog as described above, a measurement program using a predetermined measurement path can be generated. In the embodiment shown in FIG. 2 , the geometric element catalog is converted into a geometric model by the geometric model generation processing unit 45 . In other words, the geometric element catalog can be expressed by using a CSG (Constructive Solid Geometry) primitive library or the like, which is easier to process using a computer. An example of such a CSG primitive library is shown in FIG. 17 . The relationship between primitives can be expressed by the operators shown in FIG. 18, which are "or", "and", "subtraction" and "not". In Fig. 19, an example of geometric elements expressed by the CSG library is shown. For example, a chamfer tool machining a hole can be represented using two cones and one cylinder. As shown in FIG. 17, primitives forming the geometric model consist of simple three-dimensional objects such as cubes, spheres, cylinders, cones, and pyramids. Shapes created by common machine tools can be adequately expressed by these simple primitives. In other words, multiple primitives form a joint using the operators shown in FIG. 18 and generate a geometric model required for measurement. These operators are defined as:

1. Or: the whole or a joint part of two primitives

2. And: the common part of two primitives or a joint part

3. Or: Subtracting a primitive or the portion generated by a joined part from another primitive, and

4. Not: remove a graphic element or a part other than a joined part.

Determination of the measurement path

The geometric element catalog output from the geometric element generation unit 44 or the geometric model output from the geometric model generation processing unit 45 sequentially contains information about the shape of each processing element or the shape to be generated in each process, and the geometric element to be processed. data. As previously mentioned, the parameters of each geometrical element are also extracted from the data on the coordinate system to which these geometrical elements belong.

Based on these data, the measurement program generating unit 36 first determines a measurement route. A measurement path near each geometric element is determined with reference to a measurement path library shown in FIG. 20 .

When determining the path for the measurement, an interference detection is required. For example, in the case of the shape shown in Fig. 21, two cylindrical holes intersect. At the intersecting position, an interference portion is generated as shown by the shaded area in FIG. 21 . In the interference part, the measurement is not possible if the interference actually occurs. Figure 22 shows a list of these interference parts. When determining the measurement route, if a disturbance actually occurs, the disturbance list in FIG. 22 is referred to, and preferably a measurement point is added between measurement points other than those in the disturbance portion.

Once a measurement path has been determined for each geometrical element as described above, these measurement paths are connected into a measurement path for the entire workpiece. To connect these measurement paths, one of the following two methods is generally used.

The first method is to represent a probe movement path by geometric elements and check the interference between this path and the workpiece shape. Then select a measurement path without interference.

If material data is available, a second approach is to set a safe zone around the workpiece shape, as shown in Figure 23, and move a probe back to the safe zone after the measurement of each geometric element is complete. In Fig. 23, if the probe moves from a hole 4CR on the upper side to a hole 51CR on one side, the probe will collide with the workpiece if it moves in a straight line. Thus, the probe is always moved back to the safety zone and through the safety zone to a subsequent measurement point of the geometric element.

Once the measurement path is determined as described above, the measurement program generation unit 36 generates a measurement program 50 with reference to the probe information 47 , tolerance information 48 and other required information 49 , as shown in FIG. 2 . An example of tolerance information 48 is shown in FIG. 24 . Hole tolerances and dimensional tolerances can be reflected on the measurement program. For example, when a reference command (command to compare a nominal value and a measured value) is determined, a tolerance of the geometric element is automatically determined by a general tolerance. Use the tolerances determined above. The reference command can be determined.

The required information in addition to the tolerance information is listed below:

1. Information resulting from a measurement procedure

a. Program name

b. Program file name

c. Measurement result output file name

d. Measurement result output device

e. Measurement result output format

f. Others (processing control information, etc.)

2. Information originating from a measuring device

a. Setting of reference plane

b. Unit (mm/inch)

c. Movement and measurement speed

d. Measure operating parameters

e. Probe (measurement value) information

f. Reference information

g. Others (probe compensation main ball, etc.)

3. Information resulting from the setting of an initial coordinate system

a. Switch between automatic and manual measurement

b. Require a coordinate system

The above information is not included in the NC program used in the present invention. Therefore, the operator usually enters this information in advance. Since they are preset, there is no need to input initial values for a measuring device. If desired values are different from these initial values, these initial values can be easily input by selecting a template among templates prepared in advance and having initial values.

According to the present invention, as described above, the measurement program 50 can be easily generated by analyzing the NC program 40 . 22A to 25F show an example of a measurement program generated by the measurement program generation method of the present invention.

The workpiece shape information extraction unit 34, the geometric model generation unit 35, and the measurement program generation unit 36 in FIG. 1 are composed of several programs in a medium storing their procedures. Such media are provided in the form of floppy disks, CD-ROMs, hard disks or ROMs.

Processing management

The present invention is characterized in that a measurement program is generated by an NC program as described above so that a measurement program closely related to actual machining can be obtained. Also, when measuring the shape of a workpiece to be machined, the measurement result is fed back to the machining management of the machine tool so that the relationship with the NC machining program can be strengthened.

FIG. 26 shows a state in which the measurement controller 32 controls the measurement instrument 31 using the measurement program 50 . The measurement controller 32 provides a measurement path determined by a predetermined measurement program to the probe of the measurement instrument 31 . In an arbitrary step, the probe automatically measures the workpiece shape. The measured values are sent from the measurement controller 32 to a measurement data collection unit 70 as measurement data. In the measurement data collection unit 70 , desired header information is added to the measurement result, and the data is stored in the database 71 together with the header information. The measurement result analysis device 33 includes a measurement data collection unit 70 , a database 71 and a processing analyzer 72 . The analysis results are fed back to the machine tool 26 so that the measurement results can be reflected on subsequent machining processes.

Fig. 27 shows the flow of measurement result data in each process. In this embodiment, measurement operations are performed on any selected processing. The obtained measurement data is immediately diagnosed by the process analyzer 72, and the diagnostic result is then fed back to the next process or if necessary to process management in the overall process.

Now, returning to Fig. 26, a more detailed description will be given below.

If the measurement result from the measuring instrument 31 indicates a result that is out of tolerance or in a danger zone, the measurement controller 32 immediately notifies the machine tool 26 of a measurement data error. The measurement controller 32 commands to suspend the machining or to change the remaining cutting amount in the next machining step.

The measurement controller 32 sends normal measurement data to the measurement data collection unit 70, which adds the following header information to the measurement data:

1. Information resulting from a header

a, the first name

b. The first file name

c. Date (the first generation date)

d. Part name

e. Unit

f. Number of measurement items

2. Information resulting from a measurement item

a. Measurement item name

b. A feature name

c. value

d. Upper tolerance

e. Lower tolerance

f. UCL (upper control limit)

g, LCL (lower control limit)

3. Information resulting from a processing

a. Error factor

b. Error limit

c. The relationship between errors

d. Ambient temperature

The process analyzer 72 performs statistics, analysis, and diagnosis using the measurement data accumulated in the database 71 . Process Analyzer 72 generates for example X- R program, The X-S program, that is, several management programs of a trend program, and informs the machine tool 26 of the result.

Fig. 28 is a circle showing the relationship between measured values and nominal values. If the measured value is greater than the upper limit of the nominal value or smaller than the lower limit of the nominal value, it is immediately communicated to the machine tool 26 as a value in a danger zone outside the tolerance range. Values in a range close to the tolerance limit are also reported as a value of the danger zone to a subsequent processing or to an immediately preceding processing check.

According to the invention, a measurement can be obtained in real time during processing. The result is therefore immediately sent to a subsequent machining process and reflected, for example, in the machine tool feed in the subsequent process.

The management data obtained by the process analyzer 62 are analyzed by a known diagnostic program, such as FEMA (Fault Type and Effect Analysis) or FTA (Fault Tree Analysis). In the present invention, these diagnostic programs can improve the accuracy by sequentially learning the modification of the machining program and the measurement program. Also, as apparent from FIG. 32, data in a time series about the power supply can be collected from the motion state of the machine tool 26 and spectroscopically analyzed using FFT (Fast Fourier Transform) or other hardware to obtain a Numeric values of the high-frequency components of the waveform and calculate their variance. It is also possible to determine the roughness of the measurement surface and the size of the measurement result, as well as reduction in tool sharpness, tool wear, deficiencies in workpiece attachments, and machining errors. This decision is preferably incorporated into a diagnostic procedure such as FTA in the process analyzer.

Also, as apparent from FIG. 32 , information on the state of the machine tool 26 is provided to the database 71 . Various error data from the error database 73 or an error factor diagnostic program from the error factor database 74 are also supplied to the database 71 . Using such information, process analyzer 72 can provide machine tool 26 with not only the analysis information described above but also shape elements such as size, profile, pose, position, and roughness. Therefore, the machine tool 26 provides these management data to perform optimum machining control in the next step.

In the present invention, the programs in the measurement data collection unit 70, database 71 and processing analyzer 72 shown in FIG. The same is true for the controller 32 . The storage medium can be provided in the form of a floppy disk, a CD-ROM, a hard disk, and a ROM.

Advantages of the invention

According to the present invention described above. In NC machining, a measurement program can be generated directly from an actual machining NC program. Optimum, detailed measurement results can thus be easily obtained at any processing step.

Furthermore, the measurement program of the present invention can be generated regardless of the size of the NC program and without conventional, complicated automatic programming. The measurement program is always related to an actual NC program, and if one of the programs is modified, this modification can be reflected on the other program. Therefore, it becomes possible to support process management using a link between the process program and the measurement program.

Also, the measurement program in the present invention works not only on a machine tool employing an NC program but also works in the same manner on other machine tools. Furthermore, measurement programs with very high generalization can be generated, since each measurement program is generated as a module component of a measurement program in an arbitrary step of an operation element, processing element, and processing. The measuring program always has access to the latest know-how required for measuring. By retaining the measurements obtained in this way, the measurement program can be adapted to other machine tools, resulting in the advantages of superior generalization and wider extensibility.

Measurement results obtained by executing the measurement program related to the present invention can always be reflected in subsequent or preceding steps in a processing, and can provide extremely superior measurement values as processing management data.

While a preferred embodiment of the invention has been described, it will be recognized that various modifications may be made thereto and it is intended that the appended claims cover all such modifications which fall within the spirit and scope of the invention.

Claims (8)

1, a kind of process of measurement generating apparatus that uses in NC processing is carried out machining control by a NC program in this NC processing, this NC program comprises at least one processing in job factor processing, machining element processing or the operation processing;

This device comprises:

One workpiece shape information extracting unit, thus be used for analyzing the workpiece shape information that this NC program extracts the arbitrary steps of each job factor processing, machining element processing or a processing processing;

One geometric model generation unit is used for according to this workpiece shape information, generates the geometric model in the arbitrary steps; And

One process of measurement generation unit is used for generating a process of measurement according to this geometric model.

2, a kind of process of measurement generating apparatus that uses in NC processing is carried out machining control by a NC program in this NC processing, this NC program comprises at least one processing in job factor processing, machining element processing or the operation processing;

This device comprises:

One division unit is used for becoming job factor processing or machining element to process a procedure division by analyzing this NC program;

One machining element extracts and the coordinate system transformation unit, is used for extracting the workpiece shape information that job factor is processed or machining element is processed of being divided;

One geometric model generation unit is used for generating the geometric model in the three-dimensional system of coordinate according to this workpiece shape information;

One measuring route generation unit is used for determining a measuring route according to this geometric model; And

One process of measurement generation unit is used for generating a process of measurement according to this measuring route.

3, a kind of that use in NC processing and enforcement of rights requires the management processing device of the process of measurement described in 1, also comprise the measurement result analytical equipment, be used to use this measurement result as machining control information, this result carries out this process of measurement by the end that at least one processing in the some processing processing in this NC program is handled to obtain.

4, a kind of process of measurement generation method of using in NC processing is carried out machining control by a NC program in this NC processing, this NC program comprises at least one processing in job factor processing, machining element processing or the operation processing; This method includes step:

By analyzing this NC program, extract the workpiece shape information in the arbitrary steps that each job factor is processed, processing is processed in machining element processing or one;

According to this workpiece shape information, generate the geometric model in the arbitrary steps; And

Generate a process of measurement according to this geometric model

5, a kind of process of measurement generation method of using in NC processing is carried out machining control by a NC program in this NC processing, this NC program comprises at least one processing in job factor processing, machining element processing or the operation processing; This method includes step:

By analyzing this NC program, this procedure division is become job factor processing or machining element processing;

Job factor processing that extraction is divided or the workpiece shape information in the machining element processing;

According to this workpiece shape information, generate the geometric model in the three-dimensional system of coordinate;

According to this geometric model, determine a measuring route; And

According to this measuring route, generate a process of measurement.

6, a kind of that use in NC processing and enforcement of rights requires the processing and managing method of the process of measurement described in 4, and the end that at least one processing during wherein the some processing in this NC program are handled is handled carries out this process of measurement and this measurement result is used as machining control information.

7,, wherein generate a shape and this shape of this processing in handling and be provided for a follow-up processing as machining control information and handle according to this measurement result according to 6 processing and managing method of claim.

8, a kind of process of measurement generation method, wherein the tolerance data are added to process of measurement used in claim 6 or 7.

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