JPH05189022A - Method for searching for restart program of numerical controller - Google Patents

Abstract

PURPOSE:To obtain the method which can shorten the time of a search for the restart program of the numerical controller. CONSTITUTION:This method searches for the restart program of the numerical controller by reading out and analyzing a machining program including a fixed cycle program, block by block, and integrating the movement quantity of each control axis of the program until the specific restart program is reached. Then a decision 512 on whether or not the read block is the fixed cycle program is made and when so, the machining program in a next block is read out without analyzing the program.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a search method for a restart program of a numerical controller, and more particularly to a search method for a machining program including a fixed cycle program.

[0002]

2. Description of the Related Art FIG. 2 is a block diagram showing the configuration of a numerical controller. In the figure, 11 is a CPU, 12 is a ROM that stores a control program, 13 is a RAM that stores a machining program, and 14 is a working memory. Reference numeral 15 is a tape reader for reading NC program data from the NC tape NT, and the read data is stored in the RAM 13. Reference numeral 16 is a manual data input device with a display device (hereinafter referred to as MDI device), and 17 is an operation panel. Reference numeral 18 denotes a servo controller, which drives a servomotor 20 of the machine tool via a servo drive circuit 19, and a detector 21 of the servomotor 20 obtains a feedback signal to perform feedback control. Although only one servo system is shown, it is assumed that each servo system is provided corresponding to each of the X, Y, and Z control axes.

FIG. 3 is a diagram showing an example of a machining program using a fixed cycle program. In the machining program shown in FIG. 3, for example, when the tool is damaged during the drilling of 011N60, the tool is replaced by 011N6.
In order to execute from the machining program of 0, when 011N60 is input as the restart program by the operation of the MDI device 16 and the restart search is started, the restart program 0
Search for 11N60. After completing the search, move each control axis to the restart position and execute the machining program.
Processing restarts from the 1N60 drilling operation.

FIG. 4 is a flow chart showing a search method for the restart program of the numerical controller of FIG. First,
The CPU 11 reads a program for one block from the RAM 13 (S1) and analyzes the next program (S1).
2). Then, it is determined whether the program matches the preset restart program (S3). Here, it is determined whether the program numbers, sequence numbers, and block numbers match.
If they do not match, the movement amount of each control axis of the servo system for the program is integrated (S4). Next, the read address is incremented (S5), and the above-described processing is repeated until it coincides with the restart program. In the example of the machining program of FIG. 3, the above-described processing is repeated until the machining program of 011N60 is reached by sequentially reading and analyzing the program from the top program of FIG.

[0005]

Since the restart search of the conventional numerical control device is processed as described above, a fixed cycle program unnecessary for the search is also analyzed and the search time becomes long. was there.

The present invention has been made to solve the above problems, and an object of the present invention is to obtain a restart program search method for a numerical controller capable of searching the restart program in a short time. To do.

[0007]

A method for searching a resuming program of a numerical controller according to the present invention reads a machining program including a fixed cycle program block by block and analyzes the machining program until a particular resuming program is reached. In the search method of the restart program of the numerical control device that accumulates the movement amount of each control axis, it is determined whether the read block is a fixed cycle program,
If it is a fixed cycle program, the machining program of the next block is read without analyzing the program.

[0008]

In the present invention, when the fixed cycle program is read, the processing program at the next address is processed without analyzing it, and the analysis of the fixed cycle program is omitted. Therefore, the time required for the search is shortened.

[0009]

【Example】

Example 1. FIG. 1 is a flow chart showing a search method for a restart program of a numerical controller according to an embodiment of the present invention. The restart program is input by operating the MDI device 16, the restart search is started, and the search for the restart program is started. First, the CPU 11 reads a program for one block from the RAM 13 (S11), and determines whether the program is a fixed cycle program (S11).
12). If it is not a fixed cycle program, the next program is analyzed (S13). Then, it is determined whether the program matches the preset restart program (S14). Here, it is determined whether the program numbers, sequence numbers, and block numbers match. If they do not match, the movement amount of each control axis of the servo system for the program is integrated (S15). Next, the read address is incremented (S16), and the above-mentioned processing is repeated until it coincides with the restart program.

On the other hand, when it is determined that the read machining program is the fixed cycle program when it is determined that it is the fixed cycle program (S1
2) The address of the program to be read next is incremented without analyzing the program (S16). For example, in the machining program of FIG. 3, “G81 Z-5
0. R-15. "F50 L0;" is read, this program is a fixed cycle program, so this program is not analyzed and the program "M98 H1" at the next address is read.
1; ”is read and analyzed. For example, if the restart program is 011N60, the above processing is repeated until the machining program of 011N60 is reached (S
14) . After the search is completed, the movement amount of each control axis is accumulated by the above-mentioned calculation process (S15) as in the conventional case, and the movement amount is output to the servo controller 18.
The servo controller drives the servomotor 20 of the machine tool via the servo drive circuit 19, and the detector 21 obtains a feedback signal to perform feedback control to bring each axis to the restart position. After that, the processing is restarted from the drilling operation of 011N60.

[0011]

As described above, according to the present invention, when searching the resuming program of the machining program including the fixed cycle program, only the normal machining program is analyzed without analyzing the fixed cycle program. Therefore, the search time can be shortened.

[Brief description of drawings]

FIG. 1 is a flowchart showing a search method for a restart program of a numerical controller according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a numerical control device.

FIG. 3 is a diagram showing an example of a machining program using a fixed cycle program.

FIG. 4 is a flowchart showing a conventional method for searching for a restart program of a numerical controller.

Claims (1)

[Claims] 1. A search method for a restart program of a numerical control device, wherein a machining program including a fixed cycle program is read and analyzed block by block, and the movement amount of each control axis is integrated until a specific restart program is reached. It is determined whether or not the read block is a fixed cycle program, and if it is a fixed cycle program, the machining program of the next block is read without analyzing the program. Search method.