JPH07132434A - Processing data creation method - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a method for creating machining data that enables easy identification of design changes from the machining data for a workpiece. [Structure] Product information created from the input drawing information and product information called as related information from product information created in the past and already stored,
To compare. Create information about design changes, including non-identical data parts. Based on the product information including the information on the design change, basic process information indicating a processing method and the like for each process design and processing process information including processing data obtained by aggregating for each processing machine are created. The processing data includes the contents of the design change information 52a and 54a and the information 52 before the design change.
b, 54c and the information 52c, 54d after the design change are also created.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a machining data creating method, and more particularly to a machining data creating method for automatically creating machining data used for NC machine tools and the like.

[0002]

2. Description of the Related Art A CAD / CAM system has been developed and put into practical use to support a production preparation work with a computer. In recent years, various processing information creation systems have been proposed so as to be compatible with various types of functional parts.

For example, in Japanese Unexamined Patent Publication No. Hei 1-177944, when new processing data is created based on the processing information input from a graphic terminal, the same or similar process information already created in the past is selected. There is disclosed a processed data creation method which can easily and easily perform a process design work by calling the specified data and changing or deleting the called data as it is or only a different data part.

In these systems, the result (machining data) of determining the procedure for machining based on the product information (drawings) in the process design is used as a machining process table (machining drawing) or a cutting tool list. The result is output as a processing instruction sheet.

[0005]

However, in the conventional method of creating machining data, the positions of holes, screw holes, etc. in the product information (drawings) and the shapes such as hole diameter / depth and dimensional tolerance / surface roughness are expressed. When the design of the parameter value is changed, the process information is changed by deleting or overwriting the processing data corresponding to the change of the product information. That is, since the process information before the design change is erased when the process information is changed, no information remains as to which part of the process data has the design change. Therefore, the inspection / measurement site for confirming the quality of the processed product cannot be specified quickly and easily from the processing data, and the processing lead time cannot be shortened.

Further, when the NC data is created, the data correction location must be found out from the entire processed data, and the lead time for production preparation cannot be shortened.

As described above, in the machining process and the preparation stage thereof, all the machining data are handled, and there is a problem that a large number of man-hours are required.

The present invention has been made to solve the above problems, and an object thereof is to provide a machining data creating method capable of easily grasping a design change portion from machining data for a workpiece. To do.

[0009]

In order to achieve the above-mentioned object, the method for creating processed data according to the present invention inputs processing information and calls information corresponding to the processing information from stored process information. In the method of creating the desired processed data, by comparing the product information created from the entered processing information with the product information already stored corresponding to the product information, it is not the same. Create information about design changes including data part,
It is characterized in that the information before the design change and the information after the design change are combined into processing data.

[0010]

In the method of creating processed data according to the present invention having the above-described structure, when creating new processed data, product information created from the entered processing information and previously created and stored information. By comparing the product information called as the related information from the existing product information, the information about the design change including the non-identical data portion is created.

As described above, since the information regarding the design change is provided, the processing data can be created by combining the information before and after the design change for the design-changed processing portion. It is possible to easily understand what the design change is just by looking at it.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an apparatus configuration for executing the processed data method in this embodiment.
According to FIG. 1, an input / output device 10 made of graphics (GFX) for inputting drawing information, inputting / changing product information, inputting / changing basic process information allocated by process design, etc. by an operator's operation. Of the process information, a storage device 14 including memories 14a, 14b and 14c for storing product information, basic process information and machining process information respectively, and machining necessary for determining various information such as machine number and tooling number. There is a storage device 16 in which technical information is stored in advance and an output device 18 for outputting machining data such as a machining process table and a cutting tool list, which is connected to each of the above devices and edits and outputs machining data from a series of information. And a main controller 12 that executes processing for performing the above.

FIG. 2 is a diagram showing a data flow created as basic process information 40 after the drawing information 20 shown in the drawing is converted into the product information 30 of a predetermined format through the processing steps described later. Yes, the screw holes are picked up as concrete data. The drawing information 20 is a design drawing or the like showing an actual shape input by the operator from the input / output device 10.

The product information 30 is created by converting the drawing information 20 for use in process design / work design, and design changes such as new definition, deletion, and shape modification as usage name, shape classification, and machining site history. Machining site attribute 31 indicating information 32, arrangement information 33, rough material information 34, and sectional figure parameter 3 such as a dimension value indicating a sectional figure of the machining site.
5 and. It should be noted that, if information such as deletion or shape change is added as the design change information 32 in the processed part attribute 31, the product information 36 before the design change can be held as the information related to the design change.

The basic process information 40 is information assigned to each process design, such as how to process based on the product information 30. As shown in FIG. 2, the processing data to be assigned is composed of three items, that is, a processing procedure 41, a machine 43, and a tool 45 to be used.

The processing procedure 41 is information indicating which processing method is to be applied to each of a plurality of processing sites such as holes, screws, surfaces, and grooves in the workpiece, and is shown in FIG. 2, for example. As an example of the processed part of the 1-step screw hole, the processing is core fir (CE) → prepared hole (DR) → tapping (T
As shown in P), it is composed of information indicating the processing sequence and the processing method.

The machine 43 determines which processing machine executes each processing method constituting the above-mentioned processing procedure when there are a plurality of processing machines possessed for processing.

The tool 45 to be used defines the tool to be used for processing for each of the above-mentioned processing methods. In addition,
The used tool 45 is a tool type, in order to facilitate management.
The reference diameter and serial number are combined and treated as tooling NO.

The basic process information 40 has a structure capable of holding, for each item, information regarding the presence or absence of a design change and, if there is a design change, pre-design change information 42, 44, 46 representing a history of the design change information. .

FIG. 3 is a diagram showing the contents of data of the machining process information 50, which is information obtained by totalizing the basic process information for each machining machine. It is composed of product information 52 of a processing portion which is a processing target with one processing machine, and basic process information 54 including a processing procedure for processing the processing portion and the tooling NO.

A feature of this embodiment is that, as described above, when there is a design change, the data before the design change is left as history data without being overwritten with the data after the design change, and the history It is to create it as information on design changes based on the data. In this way, by storing the information before the design change, it is possible to output not only the information after the design change but also the information before the design change as processing data. It is possible to grasp whether or not the data has been changed, and it is possible to quickly and easily specify the target data such as the inspection site and the data correction site when confirming the quality or creating the NC data.

FIG. 4 is a diagram showing an outline of processing in the main control unit 12 shown in FIG. 1 and an overall data flow corresponding to each processing.

In the product information creation process (step 410), the dimension information such as hole diameter and hole depth indicating the arrangement information and the shape for each processed portion such as hole or screw hole from the drawing information or CAD data which is the processing information. Information such as the size tolerance and the size tolerance is input from the input / output device 10. The input information is judged to be the same or similar to the information already stored as the product information. If the information is the same, the stored information is used as it is. If they are similar, only the data of the changed portion is stored as the design change information for the stored information. Of course, all the input information and the design change information may be stored again. If they are not similar, the input information is stored. Thus, these pieces of information are stored in the product information memory 14a as product information. The method of determining the identity / similarity is not the gist of the present invention, and thus the description thereof is omitted. Further, even when the layout information or the shape is changed due to the design change, the change is made in the product information creating process.

In the processing attitude determination processing (step 420), setup information is stored which represents the processed portion coordinate values of how the product is attached to the processing machine.

In the process design process (step 430), a machining procedure, a machining method, a machining machine, a tool to be used such as a tool and a cutting tool are determined for each machining site, and at the time of machining, the number of revolutions of the cutting tool and the feed rate are determined. Machining cycle information indicating cutting conditions and tool behavior is added and stored in the basic process information memory 14b as basic process information. When the product information is changed, the basic process information is changed in this process design process.

In the process data aggregation process (step 440), the basic process information is classified, aggregated and edited for each machining machine (process) and stored in the machining process information memory 14c as machining process information.

Processing instruction edit / output processing (step 45)
In 0), the data of the machining process information stored for each machining machine (process) is edited, and machining instructions such as machining data (machining drawing) and a list of used tools are displayed on the output device 18.
Output. An example of the edited and output machining process table is shown in FIG.

Next, details of the above-described processing instruction edit / output processing (step 450) will be described with reference to FIG.

FIG. 6 is a flow chart showing an outline of the processing for editing and outputting the processing instruction sheet from the processing step information. First, information for one processing machine is read from the processing step information 50 that is classified and stored for each processing machine (step) (step 610). From the processing step information 50 thus taken in, the product information 52 of the processing portion to be processed by this processing machine is taken out (step 620). The presence or absence of design change information is determined as the attribute of the product information 52 of the processed part taken out (step 630). If the processed part has a design change, the information before the design change is edited (step 640). . Further, the information after the change is edited including the case where the design is not changed (step 65).
0).

Next, the basic process information 54 corresponding to the product information 52 is taken out (step 660). It is judged whether or not there is the design change information 54a as the attribute of the extracted basic process information 54 (step 670), and if there is a change, the contents of the design change information and the information before the change are edited (step 68).
0), the changed information is edited including the case where there is no change and output to the output device (step 690).

In this way, when all the machining process information of the machining site which is the machining target by one machining machine is edited and output, a machining process table as shown in FIG. 5 can be output as a machining instruction sheet. it can.

FIG. 7 is a flow chart of the product information editing process, and the product information editing process (steps 620 to 650) of the above outline process will be described in detail.

First, the product information 52 is extracted from the machining process information 50 for each machining site (step 710). The presence or absence of the design change information 52a as an attribute of the taken out product information 52 is determined (step 720). Design change information 5
If there is 2a, the contents of the design change information 52a classified into the addition or deletion of the processed part or the change of the parameter of the dimension value are judged (step 730). In the case of deleting the processed part and changing the parameters, the product information 52 before the design change
b and the design change identification symbol ("" in FIG. 5) are combined and edited (steps 740 and 750).
For example, as shown in FIG. 5, when the processed portion is deleted, the design change identification symbol and the product information before the change are overwritten with a strikethrough as shown in FIG. It will be easy to understand that it was deleted. Next, the product information 52c after the design change is edited regardless of the presence or absence of the design change information 52a (step 760). As a result, the product information 52b and 52c before and after the design change can be viewed at the same time, and it is possible to show how the cross-sectional figure parameter of the product shape is changed. It should be noted that the product information is also edited in step 760 for the part whose design has not been changed in the processed part, but since the design change identification symbol is not added, it can be easily grasped that there is no change.

FIG. 8 is a flowchart of the basic process information editing process, and the basic process information editing process (steps 660 to 690) of the above-described outline process will be described in detail.

First, the basic process information 54 such as the processing procedure and tooling No. is taken out (step 810). First, the presence or absence of the setting change information 54a of the processing method that constitutes the processing procedure in the basic process information 54 is determined (step 82).
0). If there is the setting change information 54a, the setting change information 54
The contents of a are judged (step 830). There are two possible factors that change the processing method: a case where the basic process information 54 is changed in response to a change in the product information 52 of the processed portion, and a case where the basic process information 54 alone is changed. Similar to the process in the product information 52, the contents of the change include deletion, addition, and change. The contents 54b of the design change information, the information 54c before the change, and the design change identification symbol are combined and edited (steps 840 and 850). , 860). Next, the information 54 after the design change is performed regardless of the presence or absence of the design change information 54a.
Edit d (step 870). As a result, the information 54c and 54d before and after the design change is also written and output.

The tooling No. information indicating the tool used can also be edited and output by the same processing as in the above machining procedure.

As described above, according to this embodiment, not only the information after the design change but also the information before the design change is output, so that only the changed portion can be identified and the information can be handled. .

Further, in the above embodiment, various information is stored in the memories 14a, 14b, 14c, but it goes without saying that it is also stored in the disk. When storing each information after the design change in the storage device 14, only the information about the design change can be stored, and the data before the design change can be diverted for the data about the portion not subjected to the design change. Can be reduced.

Further, when the design is further changed after the design change, the data before the design change and the data regarding the first design change are left as history data, and the data regarding the further design change is used in the design in the above embodiment. It can be treated as changed data. In this case, there will be a plurality of data before the design change. For example, the product information 36 before the design change in FIG. 2 is held in two stages. Therefore, even when the design change is performed a plurality of times in this way, it is possible to easily grasp the design change portion not only in the previous time but also in the data a plurality of times before. Furthermore, the amount of data can be reduced more effectively.

[0041]

As described above, according to the present invention, since the processing data is created together with the information before and after the design change so that the contents of the design change can be identified, which processing should be performed. It is possible to easily grasp whether the part has been changed.

Therefore, inspection / checking for confirming the quality of the processed product
Since the measurement site can be specified quickly and easily, it is possible to shorten the lead time for processing as compared with the conventional method.

Further, when creating the NC data, it is necessary to use the parts which have not been changed in the conventional design and to correct only the parts which are changed in design, so that the lead time of the production preparation can be shortened and the quality can be improved. It becomes possible.

If only the information after the design change is stored, the amount of data stored in the storage device can be reduced with respect to the total amount of information, so that the storage device can be used efficiently. It becomes possible to do.

[Brief description of drawings]

FIG. 1 is a block diagram showing a device configuration for applying a processed data method according to the present invention.

FIG. 2 is a diagram showing a specific data flow in the present embodiment.

FIG. 3 is a diagram showing the contents of machining process information in the present embodiment.

FIG. 4 is a diagram showing an outline of processing in the present embodiment and an overall data flow corresponding to each processing.

FIG. 5 is a diagram showing a machining process table edited and output in the present embodiment.

FIG. 6 is a flowchart showing an outline of processing for editing / outputting a processing instruction sheet from processing step information in the present embodiment.

FIG. 7 is a flowchart of a product information editing process according to the present embodiment.

FIG. 8 is a flowchart of an editing process of basic process information in the present embodiment.

[Explanation of symbols]

 20 Drawing information 30 Product information 32 Design change information 36 Product information before design change 40 Basic process information 42, 44, 46 Pre-design change information 50 Machining process information 52a, 54a Design change information

Claims (1)

[Claims] 1. A process data creating method for creating desired process data by inputting process information, recalling information corresponding to the process information from stored process information, and creating a product from the input process information. By comparing the information with the product information already stored corresponding to the product information, the information about the design change including the non-identical data part is created, and the information before the design change and the information after the design change are created. A processed data creation method, characterized in that the processed data is also processed.