JPS62174805A - Numerical control system - Google Patents

Abstract

PURPOSE:To improve operability of device and to reduce misoperation by automatically returning control set values at the time of starting a processing program and those right before executing a subprogram to an arithmetic control part so as to set when a resetting command and an emergency stop command are inputted. CONSTITUTION:In normal operation the processing program is interrupted by intervening a tool replacement command, etc., in said program, and the subprogram for replacing tools is called from a program storage part 4 and executed. In that case the control set value right before the execution of the subprogram is transmitted and stored in a set value storage part 5. If a reset signal 102 is inputted to an arithmetic control part 1 through an I/O control part 3 in the process executing the subprogram, the processing control set value in the arithmetic control part 1 is returned and set to the control set value right before the execution of the subprogram automatically read out of the set value storage part 5 through a read control signal 103, which is transmitted to the set value storage part 5 from a set value read control part 2, without executing a block.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a numerical control method, and in particular to a numerical control method that performs numerical control processing according to a machining program and subprograms and controls a machine tool based on the processed data. Regarding improvements.

[Conventional technology]

Conventionally, in this type of numerical control method, numerical control processing is executed based on a predetermined machining program or subprogram, and in the process of controlling the machine tool based on the processed data, the numerical control action is performed by, for example, resetting. In the case of interruption, the numerical control action is stopped with the control setting values of the numerical control device up to the last executed machining program or subprogram block, or the control setting values specific to the time of reset. be done.

[Problem that the invention seeks to solve]

In the conventional numerical control method described above, in the process of executing numerical control processing based on a predetermined machining program or subprogram and controlling the machine tool based on the processed data, for example, reset) is placed in a reset state, the control settings in the numerical control device are maintained at the control settings up to the last executed machining program or subprogram block, or at the control settings specific to the time of reset. Therefore, before executing the numerical control process again based on the machining program or subprogram, the control setting value must be changed to a predetermined value by manual data input operation, or the beginning of the machining program must be changed. To,
It is necessary to add an instruction to change the control setting value in advance.

For example, when calling and executing a program that performs automatic tool conversion, the G command, which is a preparatory function, switches from [cutting feed] to rapid traverse to move the moving body to the tool exchange position, suppress single blocks, and perform various controls. Reading and writing of set values, input/output control of machine side signals, control of control set values, etc. are executed. Therefore, when a reset is made in the automatic tool change control process, the control setting value information is set to the commanded state or to a value specific to the time of reset.
The command that should normally be moved by cutting feed was moved by rapid traverse,
There is a drawback that a single block is suppressed, resulting in problems such as execution of one block and not stopping. moreover,
Since there are special setting commands in the extended language of the machining program, K has the disadvantage that a considerable level of knowledge about the machining program is required in order for the user to restore the original setting state.

[Means for solving problems]

The numerical control method of the present invention executes numerical control processing in a predetermined arithmetic control section according to a predetermined machining program and subprograms, and starts the machining program in a numerical control device that controls a machine tool based on the processed data. and setting value storage means for storing control setting values immediately before and immediately before execution of the subprogram; and in the process of executing the machining program, or in the process of interrupting the machining program and calling and executing the subprogram, The apparatus further includes a set value read control means for controlling such that when a command such as a reset or an emergency stop is input, the corresponding control set values are read from the set value storage means and input to the arithmetic control section.

〔Example〕

Next, one embodiment of the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing the main parts of an embodiment of the present invention. As shown in FIG.
, input/output control sections 3 and 9, a program storage section 4, a set value storage section 5, and a servo motor 6.7.8.

In FIG. 1, during normal operation, the machining program stored in the program storage section 4 is read out one block at a time and input to the arithmetic control section 1, and the arithmetic processing section 1 executes a predetermined numerical control process. Therefore, the control signal for driving a moving object such as a table in a machine tool is
The signals are output to servo motors 6.7 and 8 in correspondence with the predetermined X, Y, and Z axes, respectively. The input/output control section 9 also controls input/output signals 104 to and from the machine side of the machine tool.
It is done through.

During the normal operation, the machining is performed by a tool change command in the machining program or by an intervention such as a tool change interrupt signal 101 due to tool life inputted to the arithmetic control unit 1 via the input/output control unit 3. The program is interrupted, and the tool exchange subprogram is called from the program storage section 4 and executed.

In this case, the control setting values immediately before the execution of the subprogram are sent to the setting value storage section 5 and stored therein.

Suppose that during the process of executing this subprogram, the reset signal 102 is sent to the arithmetic control unit 1 via the input/output control unit 3.
When 1I'c is input, the processing control setting value in the arithmetic control section 1 receives the readout control signal 103 sent from the setting value readout control section 2 to the setting value storage section 5 even if the block is not executed. The control settings are automatically returned to the control settings immediately before execution of the subprogram, which are read from the settings storage section 5.

FIG. 2 shows the numerical control method of the present invention.
It is a figure which shows an example of the execution flow of a machining program and a subprogram. Canada blog 2mu0ala2a3a
4, the subprogram Qc1c2csCa corresponding to the automatic tool change command Tb1b2 is called. At the start of execution of the subprogram 0clc4c3c4, the command to store the control designation value in the setting value storage unit 5 is +1=42. Subprogram 0clc2c3c
In the final block of No. 4, the control setting value is calculated by the calculation control section 1.
A command +2=#1 is placed to return to , and the continuation of the machining program is executed by the M99 command. The same applies when an interrupt signal occurs, and the subprogram 0d1
d2d3d4 is called and executed, but as in the case of the subprogram 0clc2c3c4 mentioned above, the instructions +1-42 are placed at the beginning, and the +1-42 instructions are placed in the last block.
2=41 instructions are placed. The difference is 0950
The command is to return to the machining program. In addition, M
2O; is a command to terminate the machining program.

〔Effect of the invention〕

As explained above, in the process of executing a predetermined machining program, or in the process of interrupting the machining program and calling and executing the subprogram,
When a command such as a reset or an emergency stop is input, the control setting values at the start of the machining program and immediately before the execution of the subprogram are automatically returned to the arithmetic control section and set, thereby making it easier for the user of the numerical control device. 'C has the effect that there is no need to take any consideration into revising the control setting values, etc. even at the time of resetting, etc., and it is possible to improve the operability of the device and reduce erroneous operations.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a main part of an embodiment of the present invention, and FIG. 2 is an explanatory diagram of an example of a program related to operation explanation. In the figure, 1... arithmetic control section, 2...
・Setting value reading control section, 3.9... Input/output control section, 4... Program storage section, 5...
Setting value storage section, 6,7°8... Servo motor. 10-- 3, '/-Eleven Master Sashigobe 1.7.1-Elevenner "Morph No. 1 Figure Kaya 2 Figure

Claims (1)

[Claims] In a numerical control device that executes numerical control processing in a predetermined arithmetic control unit according to a predetermined machining program and subprograms and controls a machine tool based on the processed data, at the start of the machining program and immediately before execution of the subprogram. a set value storage means for storing control set values, respectively; and input of commands such as reset or emergency stop during the process of executing the machining program, or in the process of interrupting the machining program and calling and executing the subprogram. A numerical control system characterized by comprising: a set value read control means for controlling the control set value to read corresponding control set values from the set value storage means and input them to the arithmetic control section.