JPS63143607A - Numerical controller - Google Patents

Abstract

PURPOSE:To reduce useless time by providing a program memory with a table for a numerical control code executing the succeeding block without waiting the block end of a certain numerical control code and a table for a numerical control code waiting the end of an unended block at the time of the existence of the unended block. CONSTITUTION:A numerical control code table area is secured in a RAM 6 so that reference data can be inputted from a keyboard 3 to the area. Or, a numerical control code table may be integrated in a ROM of a program memory 4. Whether the numerical control code to be executed is a numerical control code to execute the succeeding block without waiting the block end or not is compared with the contents of the table, and at the time of discrepancy, the end of the execution of the block is waited. When the numerical control code to be successively executed has an unended block at the time of coincidence with the table, the table is compared with a table for a numerical control code waiting the end of the block, and when both tables coincide with each other, the end of the block is waited. At the time of discrepancy, the block is executed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a numerical control device that operates using numerical control codes, and is applicable to machine tools, blocks, and the like.

2. Description of the Related Art In conventional numerical control devices, numerical control code is executed in a sequential manner, in which each block (separated by a semicolon indicating the end of each block) completes its operation and the next block is executed for 2 hages. ing.

Problems to be Solved by the Invention In the numerical control device mentioned above, one of the causes of slow execution speed is the M code and T code that control the auxiliary functions.
There is code execution. The M and T codes are output from the numerical control device to the outside, and by inputting some kind of end signal to the numerical control device from the outside, the numerical control device proceeds to execute the next block. Generally, the execution time of the M and T codes is longer than the time used for position control (slide movement, motor control), which is the original purpose of the numerical control device. This time is considered wasted time.

The present invention aims to reduce this wasted time.

Means for Solving the Problems In order to solve the above problems, the numerical control device of the present invention includes:
There is a table of numerical control codes in RAM or ROM that executes the next block without waiting for the end of the numerical control code block, and a numerical control code that waits for the end of the block when there is an unfinished block. It has a table of codes.

Effect In the above configuration, there is a table of numerical control code that executes the next block without waiting for the block of numerical control code to finish, and if the execution time is long and the next block is executed without waiting for the block of numerical control code to finish. By registering numerical control codes that operate normally, it is possible to reduce the aforementioned wasted time.

However, the execution time of each block varies depending on the content of the program (such as length of travel distance, etc.), and if the next block is executed without waiting for the program to finish, normal operation may not be possible.

Therefore, when there is a block that has not been completed, by having a table of numerical control codes that wait for the completion of that block, malfunctions due to the contents of the program can be prevented.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

In Figure 1, 1 is the CPU, 2 is the CRT, 3 is the keyboard, 4 is the program memory (ROM/RAM), and 6
is the position control unit, and 6 is the battery-backed RA.
It is M. A numerical control code table area is secured in this RAM 7, and reference data can be input into the numerical control code table area via the keyboard 3. Of course, a non-volatile memory such as a ROM may be used instead of the battery-backed RAMe. Also,
The numerical control code table may be incorporated into the ROM of the program memo.

The program execution procedure when the numerical control device configured in this way is applied to a lathe is shown below.

First, in the first control flow I, the numerical control code to be executed is compared with the table to see if it executes the next block without waiting for the end of the block. 2. In the control flow ■, wait for the end of execution of the block.

If it matches the table, the numerical control code to be executed next is compared with the table of numerical control codes that wait for the completion of the block when there is an unfinished block, and if they match, the numerical control code to be executed next is Wait for completion in the 4th control flow ■, and if they do not match, execute the next block in the 6th control flow ■.

In this way, it is possible to reduce wasted time.

To explain more specifically, FIG. 3 shows a numerical control program, and when executing block 11 of this numerical control program (in this program, rotation command of the spindle motor),
Comparing with the numerical control code shown in Fig. 4, which executes the next block without waiting for the end of the block,
Since they match, the spindle motor rotates and blocks 12 and 13 are executed before block 11 completes its operation.

In block 14, when there is a block that has not been completed as shown in FIG. Execute step 14.

In this way, during the execution of block 11, block 12
．． By executing step 13, the total execution speed can be increased.

Generally, it takes about 0.6 to 2.5 seconds to rotate the main shaft motor, so the above-mentioned numerical control device reduces the time by 0.5 to 2.5 seconds.

Effects of the Invention As described above, according to the present invention, a numerical control program created and created in various ways based on a table of numerical control codes that executes the next block without waiting for the end of a block of numerical control codes. It is now possible to recognize numerical control codes without waiting for the end of a block.

When there is a block that has not finished, it is possible to determine whether to execute the next block without being affected by the method of creating the numerical control program by using a table of numerical control codes that wait for the block to finish. .

[Brief explanation of the drawing]

FIG. 1 shows a numerical control device showing an embodiment of the present invention.
FIG. 2 is a flowchart showing the sequence of operations performed by the same device, FIG. 3 is a block diagram of the numerical control code stored in the program memory of the same device, and FIG. 4 is a block diagram showing numerical control code stored in the RAM of the device. A diagram showing a state in which numerical control code is stored to execute the next block without waiting for the end of the control code block. Figure 5 shows the numerical value that waits for the end of the block when there is an unfinished block in the same RAM. FIG. 3 is a diagram showing a state in which control codes are stored. 1... CPU14... Program memory, 5... Position control section, 6... RAM
0 Name of agent Patent attorney Toshio Nakao and 1 other person Figure 1 Figure 2 Figure 3 ■ Figure 4 Figure 5

Claims (1)

[Claims] In a numerical control device that operates using numerical control codes, RAM or ROM contains a numerical control code table that executes the next block without waiting for the completion of the numerical control code block, and a table for executing the next block when there is an unfinished block. A numerical control device that has a table of numerical control codes that wait for the completion of the numerical control code.