JP2003029810A - Nc working system and three-dimensional cad system and nc working method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the inputting work of a target value at the time of executing NC working. SOLUTION: This NC working system is provided with a three-dimensional CAD system (1) and NC working devices (4-6). The three-dimensional CAD system (1) generates electronic structural data (14) corresponding to a work according to the operation of a designer. The electronic structural data (14) include shape layer data (15) indicating the shape of the work and working data (16-18) indicating the contents of working to be carried out to the work. The NC working devices (4-6) are able to carry out the working of the work based on the working data (16-18). In the NC working system, the electronic structural data (14) are provided with a format including the working data (16-18) indicating the contents of the working to be carried out to the work, and the NC working devices (4-6) are able to carry out the NC working based on the working data (16-18). Thus, the three-dimensional CAD system (1) can be smoothly linked to the NC working devices (4-6) so that the inputting work of a target value can be simplified.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an NC (Numerical).
Control) processing system and NC processing method.

[0002]

2. Description of the Related Art NC machining is widely performed by an NC machining apparatus controlled by a computer.

When performing NC machining, the target value of the machined shape is input to the computer, and the machining apparatus is controlled so that the shape of the machined workpiece matches the target value. Input of the target value is generally performed by the operator of the NC processing apparatus based on the drawing.

However, inputting the target value is complicated.
In particular, when inputting the target value, it is necessary to process the tolerance allowed in the machining, which further complicates the input operation of the target value. When performing NC processing by the NC processing apparatus, it is necessary to input the tolerance allowed in the processing to the NC processing apparatus. At this time, if the definition method of the tolerance described in the drawing and the definition method of the tolerance required by the NC machining device are different, the operator needs to convert the tolerance and then input the tolerance to the NC machining device. There is. For example, it is assumed that the tolerance described in the drawing is a one-sided tolerance, and the tolerance required by the NC processing device is a two-sided tolerance. In this case, the operator needs to convert the one-sided tolerance shown in the drawing to the two-sided tolerance and then input the two-sided tolerance to the NC machining apparatus.

[0005]

SUMMARY OF THE INVENTION The object of the present invention is NC
It is to simplify the work of inputting a target value when performing processing.

Another object of the present invention is to perform NC processing.
NC that provides the processing equipment with the information necessary for processing.
It is to provide a processing system and an NC processing method.

Still another object of the present invention is to provide an NC processing system and NC in which the contents and order of processing steps are appropriately determined.
It is to provide a processing method.

[0008]

[Means for Solving the Problems] Means for solving the problems will be described below by using the numbers and symbols used in the “embodiments of the invention”. These numbers / codes are added to clarify the correspondence between the description in [Claims] and the description in [Embodiment of the Invention].
However, the added numbers / codes should not be used for the interpretation of the technical scope of the invention described in [Claims].

The NC machining system according to the present invention comprises a three-dimensional CAD system (1) and an NC (Numerical Control).
It has a function of selecting the processing device (4 to 6). Three
Dimensional CAD system (1) is a CAD (Computer Aided)
Work (W) at the same time as design drawing creation on Design)
The electronic structure data (14) corresponding to the above processing is automatically generated. The electronic structure data (14) includes shape layer data (15) indicating the shape of the work (W) and processing data (16 to 18) indicating the processing content of the work (W). NC (Numerical Contro) that processes the workpiece (W)
l) The processing device (4-6) is the processing data (16-18)
Is selected based on In the NC processing system,
The electronic structure data (14) has a format including processing data (16 to 18) indicating the content of processing performed on the work, and the NC processing device (4 to 6) stores the processing data (16 to 18). NC processing is performed based on this. As a result, the three-dimensional CAD system (1) and the NC processing device (4 ~
6) is smoothly linked with, and the work of inputting the target value is simplified.

The machining data (16-18) includes target value data (16-3, 18-3) indicating a target value for machining and tolerance data (16-3, 1) indicating a tolerance allowed for machining.
8-3) is preferably included.

The tolerance data (16-3, 18-3) is a double-sided tolerance data (1
6-3, 18-3) is preferable.

The three-dimensional CAD system (1) includes an input device (11) to which one-sided tolerance data indicating a one-sided tolerance allowed for machining is input, and an arithmetic device (12) that converts the one-sided tolerance data into two-sided tolerance data. ) And are preferably included.

The processing system preferably further includes a control terminal (3). At this time, the above-described processing includes the first processing and the second processing, and the processing data (16 to
18) is the first layer data (1
6) and the second layer data (1
7), the NC processing device (4 to 6) includes a first NC processing device (4) for performing the first processing and a second NC processing device for performing the second processing.
C processing device (5). In this case, the control terminal (3) transmits the first layer data (16) to the first NC processing device (4), the second layer data (17) to the second NC processing device (5), and the first NC It is preferable that the processing device (4) processes the work based on the first layer data (16), and the second NC processing device (5) processes the work based on the second layer data (17). Thereby, the first NC processing device (4) and the second NC
Data necessary for processing by the processing device (5) are appropriately transmitted to the first NC processing device (4) and the second NC processing device (5), respectively, and processing is performed.

The above-described processing may include a plurality of processing steps. At this time, processing data (16-18)
Includes a plurality of layer data (16 to 18) each indicating the content of the processing step. In this case, the control terminal (3)
Preferably determines the order of the processing steps based on the plurality of layer data (16 to 18), and the NC processing devices (4 to 6) preferably perform the processing in the determined order.

The above-mentioned processing may include boring processing for forming a hole in the work. In this case, it is preferable that the processing data (16 to 18) include center line data (16-3) indicating the center line of the hole and diameter data (16-3) indicating the diameter of the hole.

The above-mentioned processing may include turning for forming a cylindrical columnar element by turning the work. In this case, it is preferable that the processing data (16 to 18) include centerline data (18-3) indicating the centerline of the cylindrical element and diameter data (18-3) indicating the diameter of the cylindrical element. .

[0017]

DETAILED DESCRIPTION OF THE INVENTION Referring to the accompanying drawings,
An NC processing system and an embodiment of NC processing according to the present invention will be described.

FIG. 1 shows an embodiment of an NC processing system according to the present invention. The NC processing system is a three-dimensional CAD system 1, a storage device 2, a PCCL (Process Co.
Control terminal and terminal 3, an NC boring device 4, an NC polishing device 5, an NC turning device 6, a management department terminal 7, and a network 8. The three-dimensional CAD system 1, the storage device 2, the PCCL terminal 3, the NC boring device 4, the NC polishing device 5, the NC turning device 6, and the management department terminal 7 are connected to each other via a network 8.

The three-dimensional CAD system 1 includes an input device 11 such as a mouse and a keyboard, a display device 12 such as a CRT, and a computing device 13. The designer operates the input device 11 to design the work W. The display device 12 displays a design drawing of the work W. FIG. 2 shows an example of the designed work W displayed by the display device 12. The arithmetic unit 13 shown in FIG. 1 generates electronic structure data 14 indicating the structure of the work W according to the operation of the input device 11.

The storage device 2 stores the electronic structure data 14 generated by the three-dimensional CAD system 1.

The PCCL terminal 3 reads out the electronic structure data 14 from the storage device 2 and determines the processing steps to be performed on the work W and the order of the processing steps. Work W
Are processed or processed by the NC boring device 4, the NC polishing device 5, the NC turning device 6, and the management department terminal 7 in a predetermined order. At this time, the PCCL terminal 3 determines whether the structure of the work W shown in the electronic structure data 14 can be actually formed. When the structure of the work W shown in the electronic structure data 14 cannot be formed, the PCCL terminal 3 notifies the three-dimensional CAD system 1 to that effect. At this time, the three-dimensional CAD system 1 displays on the display device 12 that the structure of the work W shown in the electronic structure data 14 cannot be formed, and reports it to the designer of the work W. As a result, the contents and order of the processing steps are properly determined.

Further, the PCCL terminal 3 supplies the NC boring device 4, the NC polishing device 5, the NC turning device 6, and the management department terminal 7 with data necessary for processing and managing the work W.

The NC boring device 4 performs boring processing (drilling processing) on the work W based on the data supplied from the PCCL terminal 3. NC boring device 4
Thereby, a hole is formed in the work W. NC polishing device 5
Polishes the work W based on the data supplied from the PCCL terminal 3. NC turning device 6 is PCCL
The workpiece W is turned based on the data supplied from the work terminal 3. The NC turning device 6 uses the work piece W
And cut into a desired shape. The management department terminal 7 displays the measurement point of the dimension measurement and the reference dimension based on the data supplied from the PCCL terminal 3. The person in charge of managing the working process of the work W can know the measurement point of the measurement to be performed on the work W and the reference dimension from the management department terminal 7.

FIG. 3 shows a data format of the electronic structure data 14 created by the three-dimensional CAD system 1. The electronic structure data 14 is the reference shape data 15, the first
The layer data 16, the second layer data 17, the third layer data 18, and the fourth layer data 19 are included.

FIG. 4 shows the contents of the reference shape data 15. Electronic structure data 1 by 3D CAD system 1
When only the reference shape data 15 of 4 is called,
The structure shown in FIG. 4 is displayed on the display device 12 of the three-dimensional CAD system 1. The reference shape data 15 is data indicating a structure serving as a reference when processing or processing the work W. The structure shown in the reference shape data 15 is processed by the NC boring device 4, the NC polishing device 5, and the NC turning device 6. However,
When the turning process is performed on the work W, the reference shape data 15 indicates the structure to be finally formed for the turning process.

First layer data 16, second layer data 17, third layer data 18, and fourth layer data 1
Each of 9 is data indicating the content of processing or processing performed on the work W. 3D CAD system 1
When the work W is designed using, the designer
The processing to be performed on the work W or the content of processing is specified. The three-dimensional CAD system 1 uses the first layer data 1 to describe the contents of processing or processing performed on the work W.
6, second layer data 17, third layer data 18, and fourth layer data 19 are stored in the storage device 2.

First layer data 16, second layer data 17, third layer data 18, and fourth layer data 1
9 shows element names, types, and attributes of “elements” formed on the work W. Here, the “element” means a structure formed by processing or processing the work W. That is, when the work W is processed or treated, elements are formed on the work W. Each of the first layer data 16, the second layer data 17, the third layer data 18, and the fourth layer data 19 represents an element formed by a certain processing step or processing step.

However, when the elements are formed, the structure of the work W is not always deformed. Especially work W
It should be noted that when a measurement is performed on a certain measurement point, the measurement forms the element called the measurement point.

When the first layer data 16, the second layer data 17, the third layer data 18, and the fourth layer data 19 are called by the three-dimensional CAD system 1, the elements shown in them are changed to the three-dimensional CAD system. No. 1 is displayed on the display device 12. In the following, the first layer data 1
6, the second layer data 17, the third layer data 18, and the fourth layer data 19 will be described in detail.

FIG. 5 shows the contents of the first layer data 16. The first layer data 16 is composed of data on elements 1 to 3 formed by boring the work W by the NC boring device 4. The first layer data 16 is element name data 16-1 indicating the element name of the element formed by the boring process.
And type data 16-2 indicating the type of the element and attribute data 16-3 indicating the attribute of the element. The type data 16-2 indicates that the types of the elements 1 to 3 are all holes. The attribute data 16-3 includes elements 1 to 1
3 includes the coordinates of the two ends of the center line and the target values of the radii of the elements 1 to 3. The radii of the elements 1 to 3 are given tolerances that are allowed when forming the elements 1 to 3. The tolerance is N
Corresponding to that the C boring device 4 performs machining based on the double-sided tolerance, the double-sided tolerance is defined. The first layer data 16 includes data necessary for boring processing performed on the work W by the NC boring device 4.

Further, in the attribute data 16-3, elements 1 to 3 shown in the first layer data 16 are three-dimensional CAD.
A method of defining a tolerance when displayed on the display device 12 of the system 1 is included. When the elements 1 to 3 are displayed on the display device 12, the tolerance allowed for the elements 1 to 3 is attribute data 1
Displayed according to 6-3 according to the tolerance of both sides.

FIG. 6 shows the first layer data 16 displayed on the display device 12 of the three-dimensional CAD system 1. When the first layer data 16 is called by the three-dimensional CAD system 1, the structures of the elements 1 to 3 are displayed on the display device 12.

FIG. 7 shows the contents of the second layer data 17. The second layer data 17 is composed of data relating to the element 4 formed by polishing the work W by the NC polishing device 5. The second layer data 17 includes element name data 17-1 indicating the element name of an element formed by polishing, type data 17-2 indicating the type of the element, and attribute data 17- indicating the attribute of the element. Including 3 and. The type data 17-2 indicates that the type of the element 4 is a surface. Attribute data 17-
No. 3 describes the type of surface processing performed on the surface. The attribute data 17-3 has a roughness XX in the element 4.
It shows that the surface polishing is performed. The second layer data 17 includes data necessary for the polishing process performed on the work W by the NC polishing apparatus 5.

FIG. 8 shows the second layer data 17 displayed on the display device 12 of the three-dimensional CAD system 1. When the second layer data 17 is called by the three-dimensional CAD system 1, the structure of the element 4 is displayed on the display device 12.

FIG. 9 shows the contents of the third layer data 18. The third layer data 18 is composed of data on the element 5 formed by turning the work W by the NC turning device 6. The third layer data 18 includes element name data 18-1 indicating the element name of an element formed by turning, type data 18-2 indicating the type of the element, and attribute data 18- indicating the attribute of the element. Including 3 and. The type data 18-2 indicates that the type of the element 5 is a cylinder. Attribute data 18
-3 includes the coordinates of the two ends of the center line of the element 5 and the target value of the radius of the element 5. The target value of the radius of the element 5 has an allowable tolerance. The tolerance is NC turning device 6
Corresponds to the machining based on the tolerance of both sides,
It is defined by the two-sided tolerance.

The attribute data 18-3 specifies that when the element 5 is displayed on the display device 12 of the three-dimensional CAD system 1, the tolerance defined by the one-sided tolerance is displayed. This corresponds to that the tolerance is specified by the one-sided tolerance when the work W is designed by the three-dimensional CAD system 1. When designing the work W by the three-dimensional CAD system 1, the designer can input the tolerance by both the one-sided tolerance and the two-sided tolerance. At this time, N
In response to both the C boring device 4 and the NC turning device 6 requesting the input of both-sided tolerances, the arithmetic unit 13 of the three-dimensional CAD system 1 inputs the one-sided tolerances to the input device 11. If it does, the input one-sided tolerance is converted to a two-sided tolerance. The arithmetic unit 13 adds the two-sided tolerance to the attribute data 18-3. Conversely, when the element 5 is displayed on the display device 12, the computing device 13 of the three-dimensional CAD system 1 converts the two-sided tolerance into the one-sided tolerance according to the attribute data 16-3, and the one-sided tolerance is displayed on the display device 12. Is displayed.

FIG. 10 shows the third layer data 18 displayed on the display device 12 of the three-dimensional CAD system 1. Three
When the second layer data 17 is called by the three-dimensional CAD system 1, the structure of the element 5 is displayed on the display device 12.

FIG. 11 shows the contents of the fourth layer data 19. The fourth layer data 19 is composed of data on the element 6 formed by measuring the work W. The measurement is performed with reference to the measurement point of the dimension measurement displayed on the terminal of the management department terminal 7 and the reference dimension. The third layer data 18 is the element name data 18-1 indicating the element name of the element formed by the measurement.
And type data 18-2 indicating the type of the element and attribute data 18-3 indicating the attribute of the element. The type data 18-2 indicates that the type of the element 6 is a measurement point. The attribute data 18-3 includes the reference dimension of the distance between the two measurement points of the element 6 and the allowable tolerance. The tolerance is defined by the two-sided tolerance.

The attribute data 19-3 further includes a method of defining a tolerance when the element 6 shown in the fourth layer data 19 is displayed on the display device 12 of the three-dimensional CAD system 1. When the element 6 is displayed on the display device 12, the tolerance allowed for the element 6 is displayed by the two-sided tolerance according to the attribute data 19-3.

The three-dimensional CAD system 1 includes reference shape data 15, first layer data 16, second layer data 17, and third layer data 1 included in the electronic structure data 14.
8 and the fourth layer data 19 can be displayed on the display device 12 in any combination.
When all of the reference shape data 15, the first layer data 16, the second layer data 17, the third layer data 18, and the fourth layer data 19 are overlapped, the work W shown in FIG. 2 is displayed on the display device 12. Is displayed. The designer can examine the design of the work W by looking at the display device 12.

The PCCL terminal 3 uses the electronic structure data 14
Shape data 15 and first layer data 1 included in
6, the second layer data 17, the third layer data 18, and the fourth layer data 19, the NC boring device 4
Transmits to the NC boring device 4 only the data necessary for boring the work W. More specifically, the PCCL terminal 3 transmits the reference shape data 15 and the first layer data 16 of the electronic structure data 14 to the NC boring device 4. The NC boring device 4 refers to the attribute data 16-3 included in the first layer data 16 to perform boring processing on the work W.

Similarly, the PCCL terminal 3 transmits to the NC polishing apparatus 5 only the data necessary for the NC polishing apparatus 5 to polish the work W among the electronic structure data 14. More specifically, the PCCL terminal 3 transmits the reference shape data 15 and the second layer data 17 to the NC polishing device 5. The NC polishing apparatus 5 refers to the attribute data 17-3 included in the second layer data 17 and refers to the work W
Polishing process.

Similarly, the PCCL terminal 3 transmits to the NC turning device 6 only the data necessary for the NC turning device 6 to turn the workpiece W among the electronic structure data 14. More specifically, the PCCL terminal 3 transmits the reference shape data 15 and the third layer data 18 to the NC turning device 6. The NC turning device 6 refers to the attribute data 18-3 included in the third layer data 18, and refers to the work W.
Turn to.

Similarly, the PCCL terminal 3 transmits to the management department terminal 7 only the data of the electronic structure data 14 that needs to be displayed on the management department terminal 7 for measurement. More specifically, the PCCL terminal 3 transmits the reference shape data 15 and the fourth layer data 19 to the management department terminal 7. The management department terminal 7 displays the contents of the attribute data 19-3 included in the fourth layer data 19. The person in charge of managing the working process of the work W can know the measurement point of the measurement to be performed on the work W and the reference dimension from the management department terminal 7.

As described above, in the processing system, the NC
Information necessary for processing is accurately provided to the NC processing device that performs processing. Further, the necessary information is accurately provided to the terminal that displays the data necessary for the measurement for the measurement.

Further, in the processing system, the processing steps to be performed on the work W and the order of the processing steps are determined based on the electronic structure data 14. At this time, it is determined whether the structure of the work W shown in the electronic structure data 14 can actually be formed. As a result, the contents and order of the processing steps are properly determined.

[0047]

The present invention simplifies the work of inputting a target value when performing NC processing.

Further, according to the present invention, NC for performing NC processing
NC that provides the processing equipment with the information necessary for processing.
A processing system and an NC processing method are provided.

Further, according to the present invention, there are provided an NC processing system and an NC processing method in which the contents and order of the processing steps are appropriately determined.

[Brief description of drawings]

FIG. 1 shows an NC processing system according to an embodiment of the present invention.

FIG. 2 shows a work W.

FIG. 3 shows electronic structure data 14.

FIG. 4 shows reference shape data 15.

FIG. 5 shows first layer data 16.

FIG. 6 shows that the first layer data 16 is displayed on the display device 12.
The mode displayed on is shown.

FIG. 7 shows second layer data 17.

FIG. 8 shows that the second layer data 17 is displayed on the display device 12.
The mode displayed on is shown.

FIG. 9 shows third layer data 18.

FIG. 10 shows how the third layer data 18 is displayed on the display device 12.

FIG. 11 shows fourth layer data 19.

FIG. 12 shows how the fourth layer data 19 is displayed on the display device 12.

[Explanation of symbols]

1: Three-dimensional CAD system 2: Storage device 3: PCCL terminal 4: NC boring device 5: NC polishing device 6: NC turning device 7: Management department terminal 8: Network 11: Input device 12: Display device 13: Arithmetic device 14: Electronic structure data 15: Reference shape data 16: First layer data 17: Second layer data 18: Third layer data 19: Fourth layer data 16-1, 17-1, 18-1, 19-1: Element name data 16-2, 17-2, 18-2, 19-2: Type data 16-3, 17-3, 18-3, 19-3: Attribute data

Claims (13)

[Claims] 1. A three-dimensional CAD system that automatically generates electronic structure data corresponding to machining of a work at the same time as creating a design drawing on CAD (Computer Aided Design), wherein the electronic structure data is the work structure. An NC that includes shape layer data indicating a shape and processing data indicating processing details of the workpiece, and processes the workpiece based on the processing data.
(Numerical Control) An NC processing system having a function of selecting a processing device. 2. The NC machining system according to claim 1, wherein the machining data is target value data indicating a target value of machining performed on the workpiece, and tolerance data indicating a tolerance allowed for the machining. NC processing system including. 3. The NC machining system according to claim 2, wherein the tolerance data includes double-sided tolerance data indicating a double-sided tolerance allowed for the machining. 4. The NC machining system according to claim 3, wherein the three-dimensional CAD system inputs the one-sided tolerance data indicating one-sided tolerance allowed for the machining, and the one-sided tolerance data. An NC machining system including a calculation device for converting the two-sided tolerance data. 5. The NC machining system according to claim 1, further comprising a control terminal, the machining performed on the workpiece includes first machining and second machining, and the machining data includes the first machining. And a second layer data indicating the content of the second processing, wherein the NC processing apparatus performs the first processing and a first NC processing apparatus that performs the first processing. A second NC processing device, wherein the control terminal transmits the first layer data to the first NC.
And transmitting the second layer data to the second NC processing device, the first NC processing device processes the workpiece based on the first layer data, and the second NC processing device , An NC processing system for processing the work based on the second layer data. 6. The NC machining system according to claim 1, further comprising a control terminal, the machining performed on the work includes a plurality of machining steps, and the machining data includes contents of the machining steps, respectively. Of a plurality of layer data, wherein the control terminal is based on the plurality of layer data,
An NC processing system in which an order of the processing steps is determined, and the NC processing apparatus performs the processing in the order. 7. The NC machining system according to claim 1, wherein the machining performed on the work includes boring machining for forming a hole in the work, and the machining data includes An NC processing system comprising centerline data indicating a centerline of the hole and diameter data indicating a diameter of the hole. 8. The NC machining system according to any one of claims 1 to 6, wherein the machining performed on the workpiece is a lathe that forms a cylindrical columnar element by lathe turning. The NC processing system, wherein the machining data includes centerline data indicating a centerline of the cylinder element and diameter data indicating a diameter of the cylinder element. 9. An input device operated by a designer, and an arithmetic device for generating electronic structure data corresponding to a work according to the operation, wherein the electronic structure data is a shape indicating a shape of the work. A three-dimensional CAD system including layer data and processing data indicating details of processing performed on the work. 10. The three-dimensional CAD system according to claim 9, wherein the machining data includes target value data indicating a target value for the machining and tolerance data indicating a tolerance allowed for the machining. Dimensional CAD system. 11. The three-dimensional CAD system according to claim 10, wherein the tolerance data includes two-sided tolerance data indicating a two-sided tolerance allowed for the machining. 12. The three-dimensional CAD system according to claim 11, wherein one-sided tolerance data indicating one-sided tolerance allowed for the machining is input to the input device, and the arithmetic unit is the one-sided tolerance data. Three-dimensional CAD system for converting the two-sided tolerance data. 13. A three-dimensional CAD system is used to design a work to create electronic structure data, wherein the electronic structure data is shape layer data indicating a shape of the work, and processing performed on the work. And a machining data indicating the contents of the above, inputting the machining data to an NC machining apparatus, and machining the work based on the machining data by the NC machining apparatus.