JPH01152507A - Nc program registration system - Google Patents

Abstract

PURPOSE:To curtail an unnecessary memory and to efficiently register by judging whether a G code in a 1 block to decode an NC program corresponds to the newest modal G code and practicing a register process. CONSTITUTION:When data necessary to make an NC sentence in an automatic programming part 1 is inputted and an NC program PRM converted to the NC sentence is stored to a RAM 1b, a processor 1a decodes a first block of the PRM, for example, N1G91G00X120Y80 and judges whether the G code of 1 block corresponds to the newest modal G code or not by referring to a group/the newest G code corresponding table. Since it is the first block, it is judged not to correspond, a G00 and a G91 is registered to the GRM, next, 1 block decoded is registered to a RAM 1b. After that, the corresponding G code is curtailed and the decoded 1 block is registered. Thus, an unnecessary memory is curtailed and an efficient registration can be executed.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an NC program registration method for a numerical control device, and particularly to a method for creating an NC program and removing duplicate designations of modal G codes in the NC program. NC to register
Regarding program registration method.

<Prior art> In a conventional numerical control device with an interactive automatic programming function, data required for creating an NC statement is input interactively in an automatic programming section, and the input data is converted into an NC statement and then the NC statement is executed. The data is transferred and stored in the memory of the control unit, and then NC control is performed by memory operation.

N converted into N0 statement by such automatic programming section
A C program is composed of several instructions, and the unit of one instruction is called a block, and each block is distinguished by an end-of-block code (EOB). One of the words that make up the block is the G code, which has the function of informing the NC control section of the control operation mode in advance, and consists of an address G followed by a two-digit numerical code. configured.

Figure 2 is a detailed diagram of the main parts of the G-code table showing such G-codes and their functions, each G-code belongs to a predetermined group, and each group is composed of one or more G-codes. . Figure 2 shows “00J, ro IJ, ro
3J, .
J r03J, etc.) is a collection of modal G codes. A one-shot G-code is a G-code that is valid only in the commanded block, and a modal G-code is a G-code that is valid for subsequent blocks until other G-codes in the same group are cursed. That's true.

For example, if the NC program is NI GOI X...; N2 Z...; N3 X...; N4 Goo Y...;, the sequence number N2. G code rGO on N3
Its meaning is valid even if there is no IJ command, and if the G code rGOOJ of the same group "01" is specified in the block with sequence number N4, the next G code of the same group
The meaning of the G code rGOOJ remains valid until the code is cursed. In addition, the alphabet rXJ in the above NC program
rYJ rZJ means a word indicating a coordinate axis movement command, and ";" means an end-of-block code.

<Problems to be Solved by the Invention> Incidentally, modal G codes may be specified redundantly in the NC program created by the automatic programming section. For example, in the case of the above NC program, the modal G codes rGOIJ are duplicated, such as NI GOI X...; N2 GOI Z...; N3 GOI X...; N4 Goo Y...; is specified as

For this reason, modal G codes are stored redundantly as NC data in the memory of the NC control unit, which not only prevents effective use of the memory but also causes unnecessary G codes to be stored when executing NC control. There is a problem in that this process reduces the processing speed.

From the foregoing, an object of the present invention is to provide an NC program registration method that can reduce unnecessary memory for registration and improve processing efficiency when executing NC control.

<Means for Solving the Problems> FIG. 1 is a block diagram of an NG table device implementing the method of the present invention. 1 is an automatic programming section for computer configuration;
2 is a computer-configured NC control section; 3 is a graphic display device (CRT); 4 is a keyboard; la is a processor in the automatic programming section 1; 1b is a RAM; 2a is a processor in the NC control section 2; 2
b is RAM. Furthermore, the RAM 1b stores an NC program PRM and a group/latest G code correspondence table GRM.

<Operation> The NC program PRM is decoded block by block, and the group/latest G code correspondence table GRM is used to determine whether the G code in the decoded block matches the latest modal G code. Then, only the matched G code is deleted and the decoded block is registered, and if there is no match, the group/latest G code correspondence table GRM is created with the G code as the latest modal G code. , all the decrypted l blocks are registered, and the process is repeated thereafter.

<Embodiment> FIG. 1 is a block diagram of an NG table device implementing the method of the present invention. 1 is an automatic programming section for computer configuration;
2 is a similarly computer-configured NC control unit; 3 is a graphic display device (CRT); 4 is a keyboard;
Reference numerals 5 and 6 designate changeover switches for selectively using the CRT 3 and the keyboard 4 for the automatic programming section 1 or the NC control section 2, respectively. Although the changeover switches 5 and 6 are shown as switches for convenience of explanation, they can actually be changed by software processing.

1a is a processor in the automatic programming section 1, 1b is a RAM, 2a is a processor in the NG control section 2, and 2b is an R
It is AM. The created NG program PRM is stored in the RAM 1b of the automatic programming section 1.

In this example, the following NG program PM NI G91GOOX120Y80; N2 G91G
OOG43 Z-32HOI; N3 G91GOI
G43 Z-21FlooO; N4 G91GOI
G43GO4P2O00;N5 G91GOOG43
It is assumed that z21;NIOMO2; is stored in RAM1b. However, the second
Referring to the figure, rG91J is an incremental command in group "03", and rGOOJ is in group "01".
The positioning command in rG43J is group "08"
The tool length correction command, - “Gol” in group “0
1'' is a linear interpolation command, and rMO2J is an M function command indicating the end of the program. The RAM 1b also stores a group/latest G code correspondence table GRM.

The second group/latest G code correspondence table GRM shows the modal G code groups (for example, group "01", group ro:lJ, ... group "o7", ...) and the latest command within each group. This shows the correspondence between the existing G codes. For example, decoding the NG program PRM block by block, and decoding the G code r of group "01"
When GOOJ is commanded, G code rGOOJ is stored in correspondence with group "01", and later, when G code rGOIJ in the same group is commanded, G code rG is stored.
Delete OOJ and change G code rGOIJ to group “01
The latest G code within the group is always stored.

FIG. 3 is a flowchart of the process according to the present invention. Below, the third
The NG program registration method of the present invention will be explained according to the flowchart in the figure.

When the data necessary for creating an NC sentence is input interactively in the automatic programming section 1, and the NC program PRM converted into an N6 sentence is stored in the RAM 1b,
The processor 1a decodes the first block of the NC program PRM (in the example, NIG91GOOX120Y80; step 101), determines whether the block contains a G code (step 102), and if so, decodes the G code ( G91.Goo) is a modal G code (step 103).

If it is a modal G code (G91.Goo), refer to the group/latest G code correspondence table GRM.

It is determined whether the modal G code (G91.GOO) matches the latest G code in the group to which it belongs (step 104). Since this is the first block, the latest G code has not yet been registered in groups "01" and "03" in the group/latest G code correspondence table GRM. Therefore, in step 104, it is determined that the G code does not match the latest G code, and "GoO" is entered in the group "01" column of the group/latest G code correspondence table GRM, and rG code is entered in the r03J column.
Step 105: Register 91J as the latest G code
), then 1 block (NI G91GOOX12
0Y80;) are all registered in the RAM 1b (step 106). Note that if no G code is included in one block in step 102, and in step 103
If the G code in one block is not a modal G code, the process jumps to step 106 and stores the entire block in RAM 1-b.

Next, the processor 1a determines whether there is a program termination instruction (for example, rMO2J) in the stored block (step 107), and if it is an termination instruction, it terminates the processing, and if it is not an termination instruction, the next step of the NG program PRM is The process from step 101 is repeated for the block. That is, the next block (in the example, N2 G91 GOOG43
Z 32HO1;) and in the judgment at step 104, among the G codes (G91.Goo, G43), the G code rG91''rGooJ matches the latest G code in the group to which it belongs, so the G code r
G 91JrG OO” (step 108)
. On the other hand, since the latest G code of group "08" is not yet registered in the group/latest G code correspondence table GRM, rG43J is assigned to group "08" in step 105.
1 block (N2 G43 Z-32Ho1d) in step 106.
is stored in RAM1b.

After that, similar processing is performed to create a new program Nu G9.
1GOOX120Y80; N2 G43 Z-32
HOI;N3 GOI Z-21FlooO;N
4 G04 P2O00; N5 Goo Z21; NIOMO2; are registered in RAM1b.

In this embodiment, the registration process was performed within the automatic programming unit 1, but the registration process was not performed within the automatic programming unit 1, and the processor 2a of the NG control unit 2 transferred the registration process to the NG control unit 2. The above-mentioned registration processing may be performed and the processing result may be registered in the RAM 2b.

<Effects of the Invention> According to the present invention, an NC program is decoded block by block, and it is determined whether the G code in the decoded block matches the latest modal G code. Delete the decoded G code, register the decoded block, and if they do not match, set the G code as the latest modal G code, register all the decoded blocks, and perform such processing from now on. Since it is configured to repeat, unnecessary memory can be reduced and registration can be performed, and N
Processing efficiency can be improved when performing G control.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an NG device that implements the method of the present invention. FIG. 2 is a detailed view of the main part of the G code list, and FIG. 3 is a flowchart of the processing according to the method of the present invention. 1. Automatic programming section. 2...NG control section. 3. Graphic display device, 4. Keyboard. 1a...processor, lb...RAM. 2a...Processor, 2b...RAM PRM...NC program. GRM...Group/Latest G code correspondence table patent applicant
Agent for FANUC Co., Ltd.
Patent Attorney Chiki Saito Figure 1

Claims (1)

[Claims] Create an NC program using G code, and
In an NC program registration method in which duplicate designations of modal G codes in a C program are removed and registered, the NC program is decoded block by block, and the G code in the decoded block is the latest modal G code. If they match, delete the matching G-code and register the decoded block; if they do not match, set the G-code as the latest modal G-code, and An NC program registration method characterized by registering all the decoded blocks and repeating the process thereafter.