JPS6249511A - Working program storing system or numerical controller - Google Patents

Abstract

PURPOSE:To decrease the transfer frequencies of a working program and also to minimize the waiting time for execution of the next working program, by carrying out the sweeping actions to an auxiliary storage part from a main storage in response to the using frequency of the working program. CONSTITUTION:When a working program is called during a real working mode, the using frequency of the program is calculated. Then it is decided whether a main storage part 3 has the storing room or not for the working program if no working program is stored in the storage part 3. When the storage part 3 has no storing room, the working program that has the minimum using frequency and is not under execution is swept to an auxiliary storage part 4. Then the next working program is stored in the part 3 from the part 4 and registered there. When the execution is through with the stored working program, '1' is subtracted from the using frequency. This can be decrease the transfer frequency of the working program and also minimize the waiting time for execution of the next working program.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a machining program storage method for a numerical control device that stores a plurality of machining programs in a main memory section and an auxiliary memory section.

[Conventional technology]

FIG. 3 is a block diagram showing the configuration of a numerical control device having a main memory section and an auxiliary memory section.

In the figure, 1 is the main CPU, 2 is the ROM, and 3 is the RA
M (hereinafter referred to as main memory), 4 is a bubble memory, auxiliary memory such as a hard disk, 5 is a CRT, 5 is a motor 8
7 is an amplifier,
8 is a motor.

FIG. 4 shows the structure of a machining program stored in the numerical control device shown in FIG. 3, and FIG. This shows a program management screen in which a machining program that has been created is displayed on the CRT5.

Next, the operation will be explained. In FIG. 3, a finite number (16 in this case) of machining programs can be stored in the main storage section 3, and the remaining machining programs can be stored in the auxiliary storage section 4. The machining programs operated by the machine tool (not shown) exist in the main memory section 3. Not all machining programs exist in the main memory section 3. If the next machining program does not exist in the main memory 3 during actual machining, the main CPU
The next processing program is transferred from the auxiliary storage section 4 to the main storage section 3 by parallel processing of 1, so that the next processing program can be executed immediately.

On the program management screen shown in FIG. 5, if the next machining program does not exist during actual machining, it is transferred from the auxiliary storage unit 4 to the main memory unit 3, and the lowest machining program among the machining programs registered in the main memory unit 3 is will be registered. If there is no place to register, first store the highest machining program in the auxiliary memory section 4 among the machining programs excluding the machining program currently being executed.
Next, the other machining program numbers are moved upward by one line, and the next machining program transferred from the auxiliary storage section 4 is registered at the lowest position (16th).

[Problem that the invention seeks to solve]

The conventional machining program storage method for numerical control devices is configured as described above, and regardless of the frequency of use of the machining program, the machining program is registered at the top level and is transferred to the bubble memory (auxiliary storage section). Since the next machining program was registered at the lowest level, even machining programs that are executed only - times are retained in the main memory until they are flushed out from the top after execution, and machining programs that are frequently used can be saved. There are problems in that the main CPU is wasted due to repeated transfers, and there is a waiting time until the next machining program is executed (if the transfer time is long).

This invention was made in order to solve the above-mentioned problems, and provides a numerical control device that can reduce the number of transfers of machining programs and minimize the waiting time until execution of a nib program for one skin section. The purpose is to

[Means for solving problems]

A machining program storage method for a numerical control device according to the present invention calculates the usage frequency of a machining program when a sub-machining program is called for the first time, and stores less frequently used machining programs when there is not enough space in the main memory. The machining programs are swept out and stored, and the frequency of use is decreased by 1 each time the execution of each machining program is completed.

[For production]

The numerical control device of this invention reduces the frequency of use of machining programs; large programs are retained in main memory, and small programs are flushed out to bubble memory as needed, reducing machining program waiting time. do.

〔Example〕

An embodiment of the present invention will be described below.

FIG. 1 is an example of a program management screen displayed on the CRT 5 of FIG. 3, where n is the remaining number of times each program is repeatedly executed, and the lowest 0 represents the completion of all executions. FIG. 2 is a flowchart showing the processing procedure when the sub-machining program is called. In Figure 4, W
No. 110 is the main machining program, WNo.
110 to 180 are nested sub-processing programs,
WNo.

210 to 240 are double nested machining programs, and WNo. 310 is a triple nested machining program. In the last line of each machining program, the number N of repeated executions of that machining program is set.

Next, the operation will be explained. In FIG. 4, the next machining program WNO, 110 is called in the main machining program WN0.10'iJ line. At this time, WNo. 1
The number of executions of 10 is '++o.

n11D = N++o
= N2+o X N++o x Neo (times) 510: N51o x N2[x NH
ox NH (times). Thereafter, the number of repeated executions n is calculated in the same manner every time the sub-machining program is called for the first time. Furthermore, in each machining program, the number of repeated executions is decreased by one each time the execution is completed (n-1).

When this number of executions is displayed on the CRT 5, it becomes as shown in FIG. In FIG. 1, the remaining execution counts are compared and arranged in descending order of frequency.

The newly called next machining program is inserted according to the % execution count. At this time, if there is not enough space for the 5th skin part nib program to fit into the main memory 3, the machining program that has been executed less frequently is flushed out in advance.

However, if WNo, 310 t- is called while the machining program (WNo, 210) is being executed, the parent WN
o, 110. WNo. (in the 104% line) is held in the main memory section 3, and the remaining machining programs that have been executed less frequently are purged. The flowchart when the sub-processing program shown in FIG. 2 is called will be explained. First, when called for the first time (step 11), the usage frequency is calculated (step 12).

If there is no sub-processing program in the main memory 3, it is determined whether there is enough room to store it in the main memory 3 (Step 13)
．． 14), If there is no room for that, output the machining program that is least frequently used and is not currently being executed.Step 15).
Next, the machining program is stored and registered in the main memory 3 (steps 16 and 17).

Then, after each execution, reduce the usage frequency by 1.

In the above embodiment, the main CPU (Fig. 3 (1)) performs parallel processing and calls the next machining program during machining to reduce the influence of transfer time on machining time.
Even when parallel processing is not performed, the number of transfers and time can be reduced as much as possible compared to the above method, and the processing time can be shortened.

Further, in the above embodiment, a bubble memory is used as the auxiliary storage section 4, but a hard disk may also be used, and the same effects as in the above embodiment can be obtained.

〔Effect of the invention〕

As described above, according to the present invention, the unnecessary transfer of machining programs between the main memory section and the auxiliary memory section is reduced as much as possible, so that the influence of waiting time due to transfer on the total machining time can be reduced. effective.

[Brief explanation of drawings]

FIG. 1 is a screen display diagram for explaining the management state of a program according to an embodiment of the present invention, FIG. 2 is a flowchart showing an example of calling a machining program using the machining program storage method of the present invention, and FIG. The figure is a block diagram showing a numerical control device having a main memory section and an auxiliary memory section. Fig. 4 is a program block diagram showing the structure of a machining program of the numerical control device. Fig. 5 is a machining program in a conventional machining program storage method. FIG. 3 is a screen display diagram for explaining the management status of the . In the figure, reference numeral 3 indicates the main storage section 54 is an auxiliary storage section. Note that the same reference numerals in Figure 1 indicate the same parts or the monk parts. Patent applicant Mitsubishi Electric Corporation, 1 - Agent Patent attorney 1) Hiroshi Sawa 1 (2 others) No. 1 @ Figure 5 No. 2 (!I

Claims (1)

[Claims] In a machining program storage method for a numerical control device that stores multiple machining programs in a main memory section and an auxiliary memory section,
During actual machining by the numerical control device, the number of executions is calculated after calling the next machining program, and if there is no room to store the next machining program in the main memory, a machining program with a small number of executions is selected. The numerical control device is characterized in that the following machining program is flushed from the main memory, and then the next machining program is stored in the main memory, and the frequency of use is decreased by 1 after the execution of the stored machining program is completed. Machining program storage method.