JPS63163508A - Numerical control system - Google Patents

Abstract

PURPOSE:To increase the processing speed of a numerical controller in a high- speed working part by constituting the high-speed working part of an execution data format and outputting data of a read block if this block is constituted in accordance with the execution data format. CONSTITUTION:A program consisting of blocks constituted in an NC program language generated on the outside and blocks constituted in accordance with the execution data format is inputted to a numerical controller 2. When the block of a high-speed working command code is read in, the numerical controller 2 outputs read data to a servo system as it is in the case of a move command to perform pulse distribution because blocks following this block are already converted to binary data of the execution data format. In the case of an auxiliary function command, this command is outputted to a machine, a programmable machine controller, or the like. Thus, it is unnecessary for the numerical controller 2 to perform the decoding processing, the preprocessing, etc., of blocks stored in the execution data format, and therefore, the working speed is increased to perform the work at high speed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to the improvement of numerical control systems, and in particular to high-speed machining that can continuously perform high-speed machining of workpiece caps that have a shape with continuous minute movements. Concerning numerical control methods for use.

Prior Art Conventional numerical control devices read one block of command information by decoding the contents of the data contained in that block, preparing data in an executable format for pulse distribution, and converting it into this executable format. The operation of the moving parts of the machine is controlled based on the data. Here, when converting the data contained in a block into executable data, the data contained in the block is converted into an i
A machine H such as binary a that is easy to lIp? i data.

By the way, if the above-mentioned processing is performed every time one block of command information is read, and the processing of the next block is started after the processing of the current block is completed, the mechanical moving parts will be disabled until the execution format data is created. It will stop. If the movable part of the machine stops between the blocks in this way, not only will machining efficiency deteriorate, but there will also be problems such as cutter marks being left on the workpiece and vibrations occurring.

Therefore, in conventional numerical control devices, the first . A second buffer is provided, and while processing for the previous block is being performed based on the data stored in one buffer, the data stored in the current block is converted into executable data, The process of storing this data in the other buffer is performed in parallel, and when the process corresponding to the previous block is completed, the process corresponding to the current block is performed based on the data stored in the other buffer. to convert the data contained in the next block into executable data,
This is stored in one buffer.

In this way, by converting the data contained in the next block into executable data while executing the processing for the current block, the above-mentioned problem can be improved to some extent, but the execution time When a plurality of short blocks are executed in succession, the mechanical movable part sometimes stops between blocks. That is,
If the block execution time is short, the data stored in the next block may not be converted to executable data even if the processing for the current block is completed, and in such a case, the block and block There is a problem that the moving parts of the machine stop between the parts and the workpiece, causing cutter marks on the workpiece and vibrations.

Therefore, the applicant of this application converts in advance the portions that require high-speed machining, such as consecutively executing multiple blocks with short execution times, into execution data or intermediate data, and uses this data during actual machining. We have already applied for a numerical control device that performs high-speed machining by calling (Patent Application No. 164827-1982)
(Japanese Patent Application No. 60-292123).

Problems to be Solved by the Invention The above-mentioned numerical control device according to the earlier application creates an NC command program in which the part that performs high-speed processing is in an execution data format by the numerical control device itself, and uses the NC command program to However, the present invention
A numerical control device receives a program from a host computer, etc. that includes blocks configured in a machining program language and blocks requiring high-speed machining configured in an execution data format, and performs numerical control processing using the program to enable high-speed machining. The objective is to provide a numerical control method to

Means for Solving the Problems The present invention converts blocks for high-speed machining of an NC machining program into blocks in an execution data format outside a numerical control device, and creates blocks before and after a group of blocks configured in the execution data format. Insert the high-speed machining command code and the command code to turn off high-speed machining, create a program consisting of blocks in the NC machining program language and blocks in the execution data format, input the program into the numerical control device, and execute all numerical control.
The device reads the program and decodes blocks configured in the NC command programming language.

Performs pre-processing, performs distribution processing and outputs if it is a movement command, outputs the command if it is an auxiliary function command, and when a high-speed machining command code is read, until a code to turn off high-speed machining is read. The above-mentioned problem was solved by outputting a pulse to the servo system if it was a movement command based on the read execution data of the block, and outputting the command to the machine if it was an auxiliary function command.

When a program created externally that consists of blocks composed of NC machining program language and blocks composed of execution data format is input to the numerical control device, and blocks composed of NG machining program language are read. , the numerical control device performs decoding processing and preprocessing as is generally done, and if the block command is a movement command, performs pulse distribution processing and sends pulses to the servo system of each axis. distribute. If the command is for an auxiliary function, the command is output to a machine, a programmable machine controller, or the like. This process is no different from that of conventional numerical control devices. On the other hand, when a block of high-speed machining command code is read, the block after the block has already been converted into binary data in the execution data format, so the numerical control device uses the read data as it is to control the servo if it is a movement command. output to the system and perform pulse distribution. Further, if it is an auxiliary function command, the command is output to a machine, a programmable machine controller, etc. As a result, blocks stored in the execution data format do not need to be decoded or preprocessed by the numerical control device, allowing high-speed processing and high-speed processing. On the other hand, when the numerical control device reads the code that turns off high-speed machining, since the ensuing block is an NC machining program language, it performs decoding processing, preprocessing, etc. as described above, and numerically controls the machine. That will happen.

Embodiment FIG. 1 is a system configuration diagram of an embodiment of the present invention, in which 1 is a host computer, 2 is a numerical control device, 3 is a servo motor, 4 is a tacho generator that detects the speed of the servo motor, and 5 is a system configuration diagram of an embodiment of the present invention. is a position detector that detects the position of the servo motor 3, that is, the position of the machine. Although only one set of the servo motor 3, tachogenerator 41 position detector 5 is shown in FIG. They are provided for each axis, and the brackets are omitted.

The numerical control device 2 includes a central processing unit (hereinafter referred to as CPU) 21. ROM2 that stores control programs
2. RAM 23 used for temporary storage of data, etc. N.C.
Non-volatile memory 24 for storing machining programs and various parameters. A tape reader 25 that reads the NC machining program from the NC tape, and a CRT display device 26. Keepo 12
1 consisting of a position control section 28, a speed control section 29, etc.
A navigation circuit 30 is connected by a bus 33. Further, in this embodiment, a remote buffer 31 is connected to the tape reader 25, and is connected to the host computer 1 via an interface 32. In addition, tacho generator 4
The output of the position detector 5 is input to the speed control section 29 of the servo circuit 30 to control the speed of the servo motor 3, and the output of the position detector 5 is input to the position control section 28 of the servo circuit 30 for position control.

In the above configuration, a G code of GO5, for example, is provided as a high-speed machining command code, and the block with code GO5 is provided in the block one block before the block in which high-speed machining is to be performed during the NG machining program, and after the high-speed machining is completed. An NC machining program is created in which a block is also provided with a code for turning off high-speed machining, and is input to the host computer 1. When the program is input, the host computer 1 performs the processing shown in FIG. 2 and outputs it to the remote buffer 31 via the interface 32.

First, the host computer 1 reads one block from the NG machining program (step $1), and judges whether the high-speed machining flag F is "1" or not (step S2). If it is not "1", the next block read It is determined whether the command is the high-speed machining command code GO5 or not (Step S3). If it is not a GO5 code, the command of the read block is output as is (Step S5). If it is the GO5 code, the high-speed machining flag F is set to " 1” (step 84)
GO5, which is the command of the block taken by im, is output as is. That is, until the high-speed machining command code G05 is read, the commands of the read blocks are output as they are. After high-speed machining command code GO5 is read and flag F is set to "1", the flag is set to "1".
1", the process moves from step S2 to step S6, where it is determined whether the command of the read block is a high-speed machining OFF command (step S6). If it is not an OFF command, the read block is subjected to conventional numerical control processing. In the same way, decoding processing (step S7) and preprocessing (step 38) are performed, and if the command is a movement command (step S9), one cycle for each axis (for example, 8 / 16 ll
A distribution process is performed to determine the amount of movement (1 sec), and the data is converted into an execution data format, that is, binary data (step 510), and is output (step S5). For the output in this execution data format, for example, prepare 2 bytes for 1 axis, from 1st axis to N@, provide n (for example 4) bytes of bytes for auxiliary function commands after the last axis, and finally It takes the form of providing one check byte.

Note that, in step S9, if it is not a movement command, the preprocessed data is output as is. As a result, in the high-speed machining command mode, the host computer 1 outputs blocks in the execution data format. Thus,
The process described above is repeated for each block, and when it is determined in step S6 that the high-speed machining off command has been read, the high-speed machining flag F is set to "0" (step 511), and the movement command and auxiliary function command are issued. All are set to "0" and output (steps S12 and S5). That is, the value of each byte for the 1st to Nth axes and auxiliary function commands is output as rOJ. The above-described processing is then performed until the NG machining program is completed. As a result, the remote buffer 31 is transmitted from the host computer 1 via the interface 32.
In the program input to , data in the execution data format is stored in the block for which the high-speed machining command is issued, and the high-speed machining command code GO5 is stored in the block immediately before the start of the block in the execution data format, and the execution data is At the end of the format block, a block in which the movement command and auxiliary function command are "0" is stored.

On the other hand, the numerical control device 2 reads the NC machining program sent from the post computer 1 from the remote buffer 31 via the tape reader 25, and performs the processing shown in FIG. Note that, prior to machining, the number of axes to be used for the machining and whether or not there is an auxiliary function command during high-speed machining are set using the keyboard 27 and stored in the nonvolatile memory 24. First, the CPtJ21 of the numerical control device 2 reads one block from the remote buffer 31 via the tape reader 25 and performs input processing (step S20>). In step 521), it is determined whether the high-speed remote 1/buffer on flag is on, and if it is not on, the decoding process 1+1! (Step 822), pre-processing (Step 523) is performed to determine whether or not the command for the block is a movement command.Step 524): If it is a movement command,
Distribution processing to each axis is performed (step 525), and pulse distribution is performed to the servo circuit 30 of each axis (step 826).
) The servo motor 3 of each axis is driven to perform machining, and then it is determined whether there is an auxiliary function command (step 527). If there is an auxiliary function command, the auxiliary function is sent to the machine or programmable machine controller (PMC). The output is performed (step 828), and the process returns to step 820 to read the next block. If the block command read in step S24 is not a movement command, the process directly advances to step 827, and the processes of step 327 and step 828 are performed. As described above, if the high-speed remote buffer mode is not on, the above-mentioned processing is being performed, or the content of the read block is the high-speed machining command code GO5 (step 5).
Step 23a): Set a flag for the B-speed acceleration remote buffer mode and turn it on. Step 523b): From the next block, high-speed machining is started. In other words, high-speed machining command code G
Until O5 is read, the block before the code is NG.
Since it is a block composed of a machining program language,
The CPU 2i performs decoding processing, preprocessing, distribution processing, etc., converts it into execution data, and outputs the converted data to the robot circuit 1 machine of each axis and the programmable machine controller.

However, when the GO5 code is read and the high-speed E-1-buffer mode is turned on, the process moves from step S21 to step S29, and in step S29, it is determined whether the content of the read block 1 cock is a movement command or not. G if it is a movement command
When the O5 code is read and the high-speed remote buffer mode is on, the data in the read block is in executable format, so it is directly applied to the 1-navigation circuit 3 of each axis.
0 to drive the servo motor 3 of each axis (step 826). If an auxiliary function command is also included, the auxiliary function is output to drive the machine, programmable machine controller, etc. (step S
27.828). Also, if there are no movement commands for all the axes set in the block read in step S29, auxiliary function is set as a parameter, and the auxiliary function command is placed in the next byte of the command byte for all axes. It is determined whether there is an auxiliary function command (step 530), and if there is an auxiliary function command, the auxiliary function command is outputted as described above. Thus, while fast remote buffer mode is on,
The content of the read block is in an execution data format, and this execution data format is output as is to the servo circuit 30 of each axis, machine, or programmable machine controller. As a result, the numerical control device reads one block from the program, without performing decoding processing, preprocessing, distribution processing, etc.
Since the output is directly sent to the servo circuit or machine, there is no delay on the numerical control device side (machining can be performed at high speed. Also, there are no movement commands for all axes set in step 829, and When there is no auxiliary function command (step 53
0), that is, when the block of executable data is completed at step 812 in FIG. The flag is lowered and the high-speed remote buffer mode is turned off (step 531).
). From the resulting block of numbers, steps 820-82
The process then proceeds to the normal numerical control process of step 8. In this process, when the GO5 code is read again (step 523a), the high-speed remote buffer mode is turned on (step 523b), and as described above,
The contents of blocks configured in executable format are output as they are, and high-speed processing is performed.

High-speed machining is performed by repeating the above operations.

In addition, in the above embodiment, as a parameter setting, whether or not to use the auxiliary function during high-speed machining was set only to Yes or No, but it is possible to set whether to use each auxiliary function for each type of auxiliary function. In this case, in step 830, it may be determined whether each auxiliary function is set and whether there is an auxiliary function command.

Furthermore, in the above embodiment, when turning off the high-speed remote buffer mode, the movement command and auxiliary function command are all set to "0" in step 812, but this can be done by other methods, for example, by using a special code. good.

Effects of the Invention As described above, the present invention provides an execution data format for the part that is processed at high speed outside the numerical control device, and allows the numerical control device to process blocks input in an NC machining program language. is decoded in the same way as a normal numerical control method.

Pre-treatment 2 distribution treatment l! V, etc., and output it to a block configured in the execution data format, and then output the data of the read block as it is, so the processing of the numerical control device in the high-speed machining part becomes faster. Since the moving parts of the machine do not stop, there is no cutter mark on the workpiece or vibration. In general, auxiliary function operations can be performed even during high-speed machining, and program creation becomes easy.

[Brief explanation of the drawing]

FIG. 1 is a system configuration diagram of an embodiment of the present invention, and FIG. It is an operation flowchart of the numerical control device in J3 in an example. DESCRIPTION OF SYMBOLS 1...Host computer, 2...Ship control υ11 device, 3...Servo motor, 30...Suvo circuit.

Claims (1)

[Claims] External to the numerical control device, convert blocks that perform high-speed machining in the NC machining program into blocks in execution data format, and create high-speed machining command codes and commands to turn off high-speed machining before and after the block group configured in the execution data format. Insert the code, create a program consisting of blocks in the NC machining program language and blocks in the execution data format, input the program to a numerical control device, read the program, and create a program consisting of blocks in the NC machining program language. It performs decoding processing and preprocessing for the block that has been processed, performs distribution processing and outputs it if it is a movement command, outputs the command if it is an auxiliary function command, and starts high-speed machining when the high-speed machining command code is read. A numerical control method that outputs pulses to the servo system if it is a movement command, and outputs the command to the machine if it is an auxiliary function command, depending on the execution data of the read block until the code to turn it off is read.