JP2001100826A - Device and method for preparing nc data and storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device and a method for preparing NC data and a storage medium with which many NC data can be automatically prepared, while suppressing the intervention of an operator as little as possible. SOLUTION: A CAD drawing list is displayed on a CRT, NC data preparation object drawings are successively designated and are all selected, and working information required for preparing NC data is set (steps S1-S3) so that an NC data preparing processing schedule can be generated, and when the start of NC data preparation batch processing is instructed, according to the NC data preparing processing schedule, NC data are generated by NC data preparation batch processing (steps S4 and S5). As a result of this batch processing, when there is a drawing having abnormality, NC data are prepared interactively to that abnormal drawing (steps S6-S8).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an NC data generating apparatus for generating NC data of a numerically controlled machine tool, an NC data generating method, and a storage medium.

[0002]

2. Description of the Related Art Conventionally, in an NC data generating apparatus that generates NC data using CAD drawing data, target drawings are selected one by one from a CAD drawing database, and processing conditions such as tools to be used are selected for the selected drawing. Make settings, and then C
A series of processing procedures for executing the L data creation processing and confirming the result have been executed interactively.

[0003]

However, the above conventional N
Since the C data creation device employs an interactive processing system, the NC data creation device always requires the intervention of an operator. In particular, when the number of CAD drawings to be processed is large, the operator has to repeat a similar operation for each drawing by a large number of man-hours for creating NC data.

[0004] The present invention has been made in view of this point.
An object is to provide an NC data creation device, an NC data creation processing method, and a storage medium that can automatically create data.

[0005]

According to an aspect of the present invention, there is provided an NC data generating apparatus, comprising:
In an NC data generating apparatus for generating NC data used in a numerically controlled machine tool, a plurality of drawing data to be NC data generated are selected from a CAD drawing database in which the drawing data is stored, and an NC data generating processing schedule is generated. Schedule generating means, batch processing means for sequentially generating NC data from drawing data in batches in units of drawing data in accordance with the generated NC data creation processing schedule, and recording the results of the batch processing as processing status data Recording means for performing the operation.

[0006] An NC data creation device according to claim 2 is
When the batch processing ends abnormally, the recording unit records at least the name of the drawing data in which the abnormality has occurred, the processing item in which the abnormality has occurred, and the content of the abnormality as the processing status data. And

[0007] According to a third aspect of the present invention, there is provided an NC data creating apparatus.
When the batch processing is abnormally terminated, after the processing of all the drawing data in the batch processing is completed, the drawing data in which the abnormal processing has occurred is selected, and the NC data is interactively regenerated from the location where the abnormality occurred. It is characterized by having means.

[0008] In order to achieve the above object, the present invention relates to claim 4.
The NC data creation method described in the above is an NC data creation method for creating NC data used for a numerically controlled machine tool based on drawing data representing a shape of a workpiece to be created in advance, wherein the drawing data is stored. A schedule generating step of selecting a plurality of pieces of drawing data for which NC data is to be created from a CAD drawing database, and creating an NC data creation processing schedule;
A batch processing step of sequentially generating NC data from the drawing data in a batch process in drawing data units according to a data creation processing schedule; and a recording step of recording the result of the batch processing as processing status data in a recording unit. Features.

[0009] According to a fifth aspect of the present invention, there is provided an NC data creating method.
In the recording step, when the batch processing ends abnormally, at least the name of the drawing data in which the abnormality has occurred, the processing item in which the abnormality has occurred, and the content of the abnormality are recorded in the recording means as the processing status data. It is characterized by doing.

[0010] According to a sixth aspect of the present invention, there is provided an NC data creating method.
When the batch processing is abnormally terminated, after the processing of all the drawing data in the batch processing is completed, the drawing data in which the abnormal processing has occurred is selected, and the NC data is interactively regenerated from the location where the abnormality occurred. It is characterized by having a step.

Further, in order to achieve the above object, a storage medium according to claim 7 generates NC data used for a numerically controlled machine tool based on drawing data representing a shape of a workpiece to be generated in advance. Including NC data creation method,
A computer-readable storage medium storing a program, wherein the NC data creation process selects a plurality of drawing data to be created from a CAD drawing database in which the drawing data is stored, and creates the NC data. A schedule generating step of generating a processing schedule, a batch processing step of sequentially generating NC data from drawing data in batches in drawing data units according to the generated NC data creating processing schedule, and processing a result of the batch processing A recording step of recording the situation data in the recording means.

In the recording medium according to the present invention, in the recording step, when the batch processing ends abnormally, at least the name of the drawing data in which the abnormality has occurred and the abnormality The recorded processing item and the content of the abnormality are recorded in the recording means.

According to a ninth aspect of the present invention, when the batch processing is abnormally terminated, after the processing for all the drawing data in the batch processing is completed, the drawing data in which the abnormal processing has occurred is selected. An NC data creation step of creating the NC data again more interactively is provided.

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows an NC according to an embodiment of the present invention.
FIG. 2 is a block diagram illustrating a schematic configuration of a data creation device.

Referring to FIG. 1, an NC data generating apparatus 1 according to the present embodiment includes a CPU 2 for controlling the entire apparatus, a CRT 3 for displaying various information, an input device 4 including a keyboard and a mouse, a control program, and the like. ROM 5 for storing a program for performing schedule processing of NC data creation
A RAM 6 for temporarily storing various processing results and the like; a data file 7a for storing CAD drawings created by an external device in advance and NC data created by the device 1; and a preset NC machine tool A hard disk drive (HDD) 7 for storing specification files 7b for storing parameters such as tools and tools, and a communication interface (I / I / O) for connecting another CAD device 101 or NC machine tool 102 via a communication line 100. F) 8 and a bus 9.

A control process executed by the NC data creating device 1 configured as described above will be described with reference to FIGS.

FIG. 2 shows an NC data creation device 1, particularly a CP
It is a flowchart which shows the procedure of NC data creation processing which U2 performs.

In FIG. 1, first, in step S1,
C stored in the data file 7a of the HDD 7
A list of drawing symbols of the AD drawings is displayed on the CRT 3.

Next, in step S2, using the input device 4 such as a keyboard or a mouse, the NC data creation target drawing is sequentially specified, and the result is registered in the data file 7a as a schedule file.

FIG. 4 is a diagram showing an example of an interactive operation drawing displayed on the CRT 3.

In the figure, a "drawing list" menu 3a
By selecting, a list of CAD drawings is displayed.
By selecting the “schedule registration” menu 3b after selecting a drawing in the list, the selected drawing can be registered in the NC data creation processing schedule.

Next, in step S3, processing information such as a processing machine and a tool necessary for creating NC data is set. These pieces of information can be selected from the registered data by registering them in the specification file 7b of the HDD 7 in advance.

FIG. 5 is a diagram showing an example of the processing information displayed on the CRT 3.

As shown in FIG.
A unique name can be given to a combination of information such as a processing procedure and the pattern can be registered.

Returning to FIG. 2, in step S4, the process waits until an instruction to start the NC data creation batch process is issued.

In the example of the operation screen shown in FIG.
When the menu 3c is selected, the NC data creation batch process starts.

By the above-described interactive processing of steps S1 to S4, the steps from selection of a plurality of target drawings to activation of the batch processing can be collectively performed in advance.

Next, in step S5, NC data is sequentially created for the target drawing by an NC data creation batch process.

FIG. 3 is a flowchart showing a detailed procedure of the NC data creation batch processing.

In the figure, first, in step S11, one target drawing symbol is extracted from the NC data creation processing schedule file.

Next, in step S12, CAD drawing data corresponding to the target drawing symbol is loaded into the RAM 6.

Next, in step S13, a geometric inconsistency of the CAD data of interest loaded into the RAM 6 is checked.

FIGS. 6A and 6B are diagrams showing an example of a geometric inspection of CAD data. FIG. 6A shows an example of inspecting a connection state of contours of a shape for two-dimensional contour processing, and FIG. Is
An enlarged view of the partial area A is shown.

As shown in FIG. 3B, when a gap ε exceeding the allowable error is generated between the contour components, it is determined that the figure is inconsistent.

Returning to FIG. 3, if there is no inconsistency in the inspection in step S13, the flow advances to the next step S14, where tool locus data creation processing is performed.

FIG. 7 is a diagram showing an example of a tool trajectory data creation process.

In the figure, the data of the tool center locus c can be easily generated by a graphic processing method such as offsetting the contour shape o of the processing target by the radius of the tool specified by the processing information pattern.

The result of the tool trajectory data creation processing is inspected in step S15. If the tool trajectory can be created normally, the flow advances to step S16 to save the tool trajectory data in the data file 7a.

FIG. 8 is a diagram showing an example of a tool path data creation processing inspection.

In the same figure, the part B to be machined has a width (9.0) larger than the tool diameter (φ10) specified in the machining information pattern.
The processing of the processing target part B is impossible due to the geometrical processing because of the small size. In such a case, the tool path data creation processing is determined to be abnormal.

If it is determined in step S13 or S15 that the process is abnormal, the tool locus data is not created. The contents of the abnormality are stored in the data file 7a as processing status data.

The processing of one CAD drawing data is completed by the processing of steps S11 to S17.

Next, in step S18, it is checked whether or not the above-described processing has been completed for all the drawings registered in the schedule file of the NC data creation processing. If all drawings have been completed, the NC data creation batch process ends. On the other hand, if there is an unprocessed drawing, the processing of the next drawing is repeated from step S11.

Returning to FIG. 2, when the NC data creation batch processing in step S5 is completed, the result of the batch processing is confirmed in step S6.

In step S6, if no abnormality has occurred in the batch processing, the NC data creation processing ends.
The tool trajectory data of all target drawings registered in the data file 7a is transferred as NC data to the NC machine tool 102 via the communication I / F 8 and the communication line 100.

On the other hand, if there is an abnormality in the batch processing in step S6, the abnormal drawings are called interactively one by one in step S7. Since the process item in which the error occurred and the content of the error are recorded as the process status data in the drawing in which the error has occurred, the NC data is created interactively with reference to the data.

Then, in the next step S8, it is confirmed whether or not the processing of all abnormal drawings has been completed.
If a series of NC data creation processing is completed, but not completed, the process returns to step S7 to call the next abnormality occurrence drawing and interactively create NC data.

As described above, according to the present embodiment, the NC data creation processing which requires a great deal of man-hours is batched by using the NC data creation processing schedule. Intervention can be minimized, and labor for NC data creation work can be saved.

A storage medium storing a program code of software for realizing the functions of the above-described embodiment is supplied to a system or an apparatus, and a computer (or CPU 2 or MPU) of the system or apparatus stores the storage medium in the storage medium. It goes without saying that the object of the present invention is also achieved by reading and executing the program code.

In this case, the program code itself read from the storage medium realizes the novel function of the present invention, and the storage medium storing the program code constitutes the present invention.

As a storage medium for supplying the program code, for example, a floppy disk, hard disk, optical disk, magneto-optical disk, CD-ROM,
CD-R, magnetic tape, nonvolatile memory card, RO
M5 or the like can be used. Further, the program code may be supplied from a server computer via a communication network.

When the computer executes the readout program code, not only the functions of the above-described embodiment are realized, but also an OS or the like running on the computer based on the instruction of the program code. It goes without saying that a part or all of the actual processing is performed, and the functions of the above-described embodiments are realized by the processing.

Further, after the program code read from the storage medium is written in a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, the program code is read based on the instruction of the program code. It goes without saying that the CPU included in the function expansion board or the function expansion unit performs part or all of the actual processing, and the functions of the above-described embodiments are realized by the processing.

[0055]

As described above, according to the first, fourth or seventh aspect of the present invention, a plurality of drawing data for which NC data is to be created are selected from a CAD drawing database in which drawing data is stored. Thus, an NC data creation processing schedule is generated, and the NC data is sequentially generated from the drawing data in a batch process in drawing data units according to the generated NC data creation schedule.
The intervention of the operator in the C data creation device can be minimized, and the labor of the NC data creation work can be saved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of an NC data creation device according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating a procedure of an NC data creation process executed by the NC data creation apparatus of FIG. 1, in particular, a CPU;

FIG. 3 is a flowchart showing a detailed procedure of an NC data creation batch process of FIG. 2;

FIG. 4 is a diagram showing an example of a schedule operation screen displayed on the CRT in FIG. 1;

FIG. 5 is a diagram showing an example of processing information displayed on the CRT in FIG. 1;

FIG. 6 is a diagram illustrating an example of a geometric inspection of CAD data.

FIG. 7 is a diagram illustrating an example of a tool path data creation process.

FIG. 8 is a diagram illustrating an example of an inspection in a tool path data creation process.

[Explanation of symbols]

 Reference Signs List 1 NC data creation device 2 CPU 3 CRT 4 input device 5 ROM 6 RAM 7 HDD 7 a Data file 7 b Specification file 8 Communication I / F 9 Bus 100 Communication line 101 CAD device 102 NC machine tool

Claims (9)

[Claims] An NC used for a numerically controlled machine tool based on drawing data representing a shape of a processing object generated in advance.
An NC data generating apparatus for generating data, wherein a schedule generating means for selecting a plurality of drawing data to be NC data generated from a CAD drawing database in which the drawing data is stored, and generating an NC data generating processing schedule; Batch processing means for sequentially generating NC data from drawing data by batch processing according to the generated NC data creation processing schedule in drawing data units, and recording means for recording the result of the batch processing as processing status data An NC data creation device characterized by the above-mentioned. 2. The recording means, when the batch processing is abnormally terminated, stores at least the name of the drawing data in which the abnormality has occurred, the processing item in which the abnormality has occurred, and the content of the abnormality as the processing status data. 2. The NC data creating apparatus according to claim 1, wherein the NC data is recorded. 3. When the batch processing ends abnormally, after the processing of all the drawing data in the batch processing is completed, the drawing data in which the abnormal processing has occurred is selected, and the NC data is re-interactively displayed from the location where the abnormality occurred. 3. An N data according to claim 2, further comprising an NC data generating means for generating.
C data creation device. 4. An NC used for a numerically controlled machine tool based on drawing data representing a shape of a processing object generated in advance.
An NC data creation method for creating data, comprising: a schedule creation step of selecting a plurality of drawing data to be created with NC data from a CAD drawing database in which the drawing data is stored, and creating an NC data creation processing schedule; A batch processing step of sequentially generating NC data from the drawing data in a batch process in accordance with the generated NC data creation processing schedule in drawing data units; a recording step of recording the result of the batch processing as processing status data in a recording unit; NC characterized by having
Data creation method. 5. In the recording step, when the batch processing ends abnormally, at least the name of the drawing data in which the abnormality has occurred, the processing item in which the abnormality has occurred, and the content of the abnormality are stored as the processing status data. The NC data creation method according to claim 4, wherein the NC data is recorded in the recording unit. 6. When the batch processing ends abnormally, after the processing of all the drawing data in the batch processing is completed, the drawing data in which the abnormal processing has occurred is selected, and the NC data is interactively re-examined from the abnormality occurrence location. The NC data creating method according to claim 5, further comprising an NC data creating step of creating. 7. An NC used for a numerically controlled machine tool based on drawing data representing a shape of a processing object generated in advance.
A storage medium storing a computer-implementable program including an NC data creation method for generating data, wherein the NC data creation processing is to be performed from a CAD drawing database in which the drawing data is stored. A schedule generating step of selecting a plurality of drawing data and generating an NC data creation processing schedule; and a batch for sequentially generating NC data from the drawing data by drawing processing in batch units in accordance with the generated NC data creation processing schedule A storage medium, comprising: a processing step; and a recording step of recording a result of the batch processing as processing status data in a recording unit. 8. In the recording step, when the batch processing ends abnormally, at least the name of the drawing data in which the abnormality has occurred, the processing item in which the abnormality has occurred, and the content of the abnormality are stored as the processing status data. The storage medium according to claim 7, wherein the storage medium is recorded in the recording unit. 9. When the batch processing ends abnormally, after the processing of all the drawing data in the batch processing is completed, the drawing data in which the abnormal processing has occurred is selected, and the NC data is interactively re-examined from the error occurrence location. 9. The storage medium according to claim 8, further comprising an NC data creating step for creating.