JP2001092512A - Nc data preparation method and computer-readable storage medium storing nc data preparation program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an NC data preparation method for an automatic programming system by which anyone can easily recognize the machining state only by observing NC data. SOLUTION: This method comprises a machining order group information for determining the machining order on the basis of NC data and CL data, a machining order fixing information for fixing the machining order for every line of the NC data a route class information showing the locus class of a machining head, a punch pierce information being a link information between a punch pierce and a laser route using the punch pierce, and a joint information showing the joint punch of a PX system. Thus, the machining information is determined by optionally combining a plurality of above information (S18), encoded (S20) and added to the NC data (S22).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for creating NC data applied to an NC device, and particularly to adding not only NC data for controlling the NC device but also processing information not included in the NC data as a comment. Accordingly, the present invention relates to an NC data creation method that enhances the reusability of NC data and a computer-readable storage medium that stores an NC data creation program.

[0002]

2. Description of the Related Art NC data (NC program), which is sequentially executed for each line by an NC device, is automatically created based on graphic data by CAD or the like, and the NC data is changed and edited in order to reuse the NC data. Automatic programming systems that can do this are known.

Normally, in automatic programming of NC data, first, based on two-dimensional or three-dimensional CAD data of a part to be machined, a point, a straight line, A part program expressing the definition of a figure such as a circle and the processing procedure is created.

[0004] Next, the part program is decoded by a main processor (general processor) to determine a graphic definition and a machining procedure, and to create CL data which is a mathematical expression of a path (tool trajectory) in which a tool moves. Then, NC data suitable for the target NC device is created from the CL data by the post processor.

[0005] The NC data created in this way includes information necessary for controlling a target NC device. However, the NC data such as APTIV and EXAPT, etc.
Parts unnecessary for control of the NC device in the graphic definition information and the tool trajectory information described in the programming language are missing.

Therefore, in order to convert (convert) NC data created for a specific NC device to another NC device for reuse, the output of the automatic programming system must be manually corrected and edited. I had to.

[0007] Some NC data languages allow the insertion of a comment sandwiched between "(" and ")" in the NC data. According to the NC data language system, when a comment is described in NC data, the NC device ignores the comment, but informs the programmer or operator of useful information for grasping the processing content of the line. It may be.

Further, a technique described in Japanese Patent Application Laid-Open No. Hei 7-56616 is one in which such a comment is formalized and used as fixed processing order information between lines of NC data which can be recognized by an automatic programming device.

[0009]

However, when the NC data is recreated by the automatic programming system in order to reuse the NC data, processing information, that is, processing order group information in which the processing order is ordered among the groups,
Since the path type information indicating the type of the path of the processing head is missing, the processing status of each line of the NC data is vague, and for example, it is difficult to determine whether the processing is a cutting of an external closed path or a processing of a hole. There was a point.

In addition, manual correction and conversion of the result of automatic programming requires many years of experience and deep expertise, and there is a problem that only a skilled worker can perform correction and conversion work. .

Further, there is a problem that even a skilled worker requires a long time for correction and conversion work for reusing NC data.

Further, in order to check the validity of the converted NC data, it is necessary to draw a tool locus on a drafter or a CRT screen, or to perform a check such as a dry run or a styrofoam processing by an NC device. There was such a problem.

In view of the above problems, an object of the present invention is to
N in an automatic programming system that allows anyone to easily recognize the processing status just by looking at the C data
An object of the present invention is to provide a C data creation method.

Another object of the present invention is to provide an automatic programming system in which anyone can modify and convert NC data in a short time without the need for a skilled worker to reuse the NC data. An object of the present invention is to provide a method for creating NC data.

It is another object of the present invention to provide a method for creating NC data in an automatic programming system in which NC data can be reused and easily ported to other models.

[0016]

According to a first aspect of the present invention, there is provided an NC data creating method in an automatic programming system for creating NC data sequentially executed for each line by an NC unit. The gist is that the processing information encoded in the format is selectively added to each line of the NC data as a comment to be ignored by the NC device.

According to a second aspect of the present invention, there is provided the NC data creating method according to the first aspect, wherein the processing information encoded in the predetermined format is arranged in a processing order between groups. Processing order group information, processing order fixed information in which the processing order is fixed for each row of NC data, path type information indicating the type of the trajectory of the processing head, and link information between the punch pierce and the laser path using the punch pierce The gist of the present invention is to include any one of punch piercing information, joint information indicating a PX joint punch, or an arbitrary combination thereof.

According to a third aspect of the present invention, there is provided an NC data generating method according to the first or second aspect, wherein the predetermined format is a one-character special symbol indicating the start of the encoded information. And one or more sets of one alphabet that differs for each type of processing information and a number that is meaningful for each type of processing information, and one special symbol that indicates the end of the coded processing information. Make a summary.

According to a fourth aspect of the present invention, there is provided an automatic programming system for creating NC data which is sequentially executed for each line by an NC unit.
In a computer-readable storage medium storing a data creation program, an NC data creation program for selectively adding processing information encoded in a predetermined format as a comment to be ignored by an NC device for each line of the NC data is stored. That is the gist.

[0020]

Next, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 2 shows an NC according to the invention.
1 shows a configuration example of an automatic programming system used for implementing a data creation method.

In FIG. 2, an automatic programming system 1 includes a CPU 1 as an arithmetic and control unit, an NC data creation program executed by the CPU 1 itself, and an NC to be processed.
A main memory 2 for storing data and the like, an FDD 3, a bus arbitration circuit 4, a bus 5, a CRT display 6 as a display device, and an auxiliary storage device 7 such as a hard disk
A keyboard 8 and a mouse 9 as input devices;
A communication control device 10 for connecting to the AN 11 is provided. The automatic programming system 1 may use a conventional general-purpose workstation or personal computer.

In the present embodiment, the processing information added to the NC data adopts, for example, the (+ ○○ +) format. The NC unit uses an alphanumeric string that is sandwiched between parentheses "(" and ")" as a comment in the NC device. “+” Is a code for identifying processing information according to the present invention. ○○○ is the processing information added and is expressed by alphanumeric characters.

Processing information described in the present embodiment includes processing order group information, processing order fixed information, path type information, punch piercing information, and joint information.

(1) Processing Order Group Information The processing order group information assigns a group number to each processing group including a plurality of processing, and processing with a small group number is processed before processing with a large group number. It shows. The processing order group information is (+ Ki
+) And added to the NC data. i (i
= 1, 2, 3,..., 9) indicate the distinction between the processing order groups.

(2) Processing Order Fixed Information Processing order fixed information is information added when processing is desired to be performed without changing the processing order. When processing order is not fixed, (+ H
1+) is added. When the processing order fixation is specified before and after,
(+ Gj +) is added. Here, j (j = 1, 2, 2)
3,..., 99) indicate the processing order. When the processing order fixation is continuous designation, (+ Wj +) is added. Here, j (j =
, 99) indicate the processing order.

(3) Route Type Information The route type information indicates the type of route formed by processing, and is encoded in the form of (+ Ai +) and added to the NC data. Here, i = 1 is an external closed path, i = 2 is a modified hole closed path, i = 3 is a fixed hole, i = 4 is cut and raised, i
= 5 is a marking.

(4) Punch piercing information Punch piercing information is information indicating a link between the punch piercing and the laser path, and is encoded in the form of (+ Pj +) and added to the NC data. Where j (j = 1,
2, 3,..., 99) indicate that the punch piercing with the same j and the laser path correspond.

(5) Joint information The joint information adds PX type joint punch (sub-punch) information, is encoded in the form of (+ J +), and is added to the NC data.

By adding the above processing information to the NC data in the form of a comment, it is possible to easily grasp the processing status, rather than the vague NC data which has been used for hole processing or external closed path cutting processing. It becomes NC data.

FIG. 1 is a schematic flowchart of the NC data creation program according to the present invention. First, a part program in which parts manufactured by an NC machine tool are described in an automatic programming language such as APT or EXAPT is input (Step 10, hereinafter, step is abbreviated as S). Next, the input part program is analyzed (S12).

Instead of inputting the part program in S10, it is also possible to input three-view drawing data and the like. In this case, in S12, analysis is performed based on the input three-view drawing data and the like. Next, a tool path is calculated based on the definition of the figure and the motion of the tool (S14), and the CL data (cutter locat) is calculated.
ion data) is obtained.

Next, CL data is converted into NC data by referring to information on characteristics and tools corresponding to the type of NC machine tool for which NC data is to be created (S16). Next, CL
With reference to the data and the NC data, processing information to be added to the NC data in a comment format is determined (S18).

For the determination of the processing information, for example, an NC data creation program automatically extracts processing information candidates, an operator checks the processing information candidates, and if there is no problem, determines the processing information as it is and corrects it. If you need
Correction input may be performed. All the processing information may be manually input.

The types of processing information determined in S18 include:
Processing order group information in which the processing order is ordered among groups, processing order fixed information in which the processing order is fixed for each row of NC data, path type information indicating the type of the path of the processing head,
There are punch piercing information which is link information between a punch pierce and a laser path using the punch piercing, joint information indicating a PX joint punch, and the like. Any one of these pieces of information or an arbitrary combination thereof is used. You can decide.

The processing information determined in S18 is
Encoding of the processing information is performed, and encoded processing information is obtained (S20). Next, the encoding processing information is added to the NC data to obtain the NC data with the processing information, and the process ends.

FIGS. 3 to 5 are detailed flowcharts for explaining the processing information determination routine in S18 in detail.

First, CL data and NC data are input (S110), and CL data and NC data are developed (S110).
112). Next, with reference to the CL data, the processing order fixed candidate for each line of the NC data is extracted, and the line of the processing order fixed candidate of the NC data is displayed on a display device such as a CRT by changing the display color (S114).

The operator inputs a determination result as to whether or not the extracted and displayed machining order candidates are appropriate (S116).
If it is OK, the input of the processing order candidate is input, and if it is NG, the correction input of the processing order candidate is performed (S118), and the fixing of the processing order is determined (S120). Next, it is checked whether or not there is another processing order fixed candidate (S122).
Return to

If there is no other processing order fixed candidate, then C
The processing order group candidates of the NC data are extracted with reference to the L data, and the lines of the processing order group candidates of the NC data are displayed on the display device, for example, by changing the display color (S124).

The operator inputs a determination result as to whether or not the extracted and displayed machining order group candidates are appropriate (S1).
26). If it is OK, the input of the processing order group candidate is input, and if it is NG, the correction input of the processing order group candidate is performed (S128), and the processing order group is determined (S13).
0). Next, it is checked whether or not there is another processing order group candidate (S132), and if there is, the process returns to S124.

If there is no other processing order group candidate, then a contour closed path candidate of the NC data is extracted with reference to the CL data, and a row of the contour closed path candidate of the NC data is displayed on the display device by changing the display color, for example. It is displayed (S134).

The operator inputs a determination result as to whether or not the extracted and displayed outline closed path candidate is appropriate (S13).
6). If OK, input the outline closed route candidate approval,
If it is NG, the correction input of the contour closed path candidate is performed (S1).
38), an external closed path is determined (S140).

Next, the deformed hole closed path candidate of the NC data is extracted with reference to the CL data, and the line of the deformed hole closed path candidate of the NC data is displayed on the display device by changing the display color, for example (S142).

The operator inputs a determination result as to whether the extracted and displayed deformed hole closed path candidate is appropriate (S14).
4). If OK, the modified hole closed route candidate is input, and if NG, the modified hole closed route candidate is corrected (S146), and the deformed hole closed route is determined (S148).

Next, a fixed hole candidate path candidate of the NC data is extracted with reference to the CL data, and the line of the fixed hole path candidate of the NC data is displayed on a display device, for example, by changing a display color (S150).

The operator inputs a determination result as to whether or not the extracted and displayed fixed hole candidate path candidate is appropriate (S15).
2). If it is OK, input of approval of the fixed hole closed path candidate is performed. If it is NG, correction input of the fixed hole closed path candidate is performed (S154), and the fixed hole closed path is determined (S156).

Next, NC data cutout candidates are extracted with reference to the CL data, and the NC data cutout candidate lines are displayed on the display device, for example, by changing the display color (S158).

The operator inputs a determination result as to whether the extracted and displayed cut-and-raised candidate is appropriate (S16).
0). If it is OK, enter the cut-up candidate approval,
If it is NG, the cut-and-raised candidate is corrected and input (S1
62), cut-and-raise is determined (S164).

Next, the NC data marking candidates are extracted with reference to the CL data, and the lines of the NC data marking candidates are displayed on the display device, for example, by changing the display color (S166).

The operator inputs a result of determination as to whether the extracted and displayed marking candidate is appropriate (S16).
8). If OK, enter the marking candidate approval,
If it is NG, the marking candidate is corrected and input (S1).
70), the marking is determined (S172).

Next, by referring to the CL data, a link candidate between the punch pierce of the NC data and the laser path is extracted, and a line of the link candidate between the punch pierce of the NC data and the laser path is displayed by changing the display color, for example. Is displayed (S174).

The operator inputs a result of determination as to whether or not a link candidate between the extracted and displayed punch pierce and the laser path is appropriate (S176). If OK, enter the link candidate approval between the punch piercing and the laser path, and then enter NG.
If so, the link input between the punch pierce and the laser path is corrected (S178), and the link between the punch pierce and the laser path is determined (S180).

Next, PX-type joint punch information candidates of the NC data are extracted with reference to the CL data.
The line of the X-type joint punch information candidate is displayed on the display device by changing the display color, for example (S182).

The operator inputs a determination result as to whether or not the extracted and displayed PX joint punch information candidate is appropriate (S184). If OK, input PX joint punch information candidate approval. If NG, enter P.
Correction input of X-type joint punch information candidates is performed (S
186), the PX joint punch information is determined (S188), and the process returns.

Next, an example in which the present invention is applied to NC data of an NCT (NC control turret punch press) device will be described. FIG. 6 is an explanatory view of component processing showing an example applied to an NCT apparatus, and FIG. 7 is an NC showing an example applied to an NCT apparatus.
Data.

For example, as shown in FIG. 6, it is assumed that a component provided with a round hole at the center of a rectangular plate is processed by an NCT apparatus. In the processing order, the center round hole processing 21 is performed first, and then the overtaking processing 22 of the outer shape cutting is performed.

In the center round hole machining 21, a large round hole is formed by nibbling, so that no residual residue is generated and the tool moving path (in the case of NCT, the work that is actually moved is a work) is shortened. The processing order is fixed for the purpose of.

In the NC data shown in FIG. 7, the processing order is fixed as (+ K2H1 +) in rows 4, 5, 7, 8, and 10 and added to the NC data. here,
"(" And ")" indicate the start and end of the comment in the NC data, respectively, and "+" is a sign indicating the start or end of the encoded information in the present invention. K2H1 indicates that the processing order is fixed in the processing order group 2.

Further, the overtaking process 22 of the outer shape cutting is performed by adding (+ K2H1) to each of the rows 12, 14, 18, and 20 in FIG.
As +, the four sides of the same rectangle are designated as the same processing order group in which the processing order is not fixed.

Next, an example in which the present invention is applied to a laser processing apparatus will be described. FIG. 8 is a processing explanatory diagram showing an example applied to a laser processing apparatus, and FIG. 9 is NC data showing an example applied to a laser processing apparatus.

For example, as shown in FIG. 8, it is assumed that a component having a rectangular irregular hole and four round holes in the center of a rectangular plate is processed by a laser processing apparatus. In the processing order, the processing of the round shaped hole 32 and the rectangular irregular hole 33 is performed, and then the processing of the outer closed path 34 is performed.

In this processing information, (+ K2A3 +) is added to the four standard holes 32 as the standard holes of the processing order group 2 as shown in lines 6 to 9 in FIG. 9, (+ K2A2 +) is added to the NC data of the deformed hole 33 as the deformed hole of the processing order group 2. Further, as shown in line 22 of FIG. 9, (+ K2A1 +) is added to the NC data of the contour closed path 34 as the contour closed path of the machining order group 2.

Although the preferred embodiment has been described above, this does not limit the present invention. For example, in the embodiment, “+” is used as a special symbol indicating the start and end of the encoded processing information, but another symbol such as “*” may be used. Further, the encoding of the processing information can be variously modified.

[0064]

As described above, according to the present invention, N
N in an automatic programming system that allows anyone to easily recognize the processing status just by looking at the C data
A method for creating C data can be provided.

According to the present invention, the NC data can be reused without the need of a skilled worker, and the NC data can be modified and converted in a short time by an automatic programming system. A data creation method can be provided.

Further, according to the present invention, it is possible to provide a method of creating NC data in an automatic programming system in which NC data can be reused and easily ported to other models.

[Brief description of the drawings]

FIG. 1 is a schematic flowchart illustrating an embodiment of an NC data creation program according to the present invention.

FIG. 2 is a configuration diagram of an automatic programming system used for performing an NC data creation method according to the present invention.

FIG. 3 is a detailed flowchart of an embodiment of an NC data creation program according to the present invention.

FIG. 4 is a detailed flowchart of an embodiment of an NC data creation program according to the present invention.

FIG. 5 is a detailed flowchart of an embodiment of an NC data creation program according to the present invention.

FIG. 6 is a processing explanatory view showing an example applied to an NCT apparatus.

FIG. 7 is NC data showing an example applied to an NCT apparatus.

FIG. 8 is a processing explanatory view showing an example applied to a laser processing apparatus.

FIG. 9 is NC data showing an example applied to a laser processing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 CPU 2 Main memory 3 FDD 4 Bus arbitration circuit 5 Bus 6 CRT display 7 Auxiliary storage device 8 Keyboard 9 Mouse 10 Communication control device 11 LAN

Claims (4)

[Claims] 1. An NC data creating method in an automatic programming system for creating NC data which is sequentially executed for each line by an NC unit, wherein the NC unit ignores processing information encoded in a predetermined format as a comment which is ignored by the NC unit. An NC data creation method characterized by selectively adding data to each line of data. 2. The processing information encoded in the predetermined format includes processing order group information in which the processing order is ordered between groups, processing order fixed information in which the processing order is fixed for each row of NC data, and processing information. Path type information indicating the type of the trajectory of the head, punch piercing information as link information between a punch pierce and a laser path using the punch piercing, joint information indicating a PX joint punch, or any one of these. 2. The NC data creating method according to claim 1, wherein a combination of the following is included. 3. The predetermined format includes a set of one special symbol indicating the start of encoded processing information, one alphabet that differs for each type of processing information, and a number meaningful for each type of processing information. 3. The NC data generating method according to claim 1, comprising: at least one set; and one special character indicating the end of the encoded information. 4. A computer-readable storage medium storing an NC data creation program in an automatic programming system for creating NC data which is sequentially executed for each line by an NC device, wherein processing information encoded in a predetermined format is processed by an NC. A computer-readable storage medium storing an NC data creation program, which is selectively added to each line of the NC data as a comment to be ignored by the device.