JP2850273B2 - Numerical control unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a numerical controller for automatically performing a program check without stopping the apparatus without the intervention of an operator.

[0002]

2. Description of the Related Art FIG. 5 is a block circuit diagram showing a conventional electric discharge machine. In the figure, reference numeral 1 denotes an updating means, which comprises an address counter circuit or the like, and outputs an address c for an execution program stored in a storage means (described later) by an increment command from an analyzing means (described later). Reference numeral 2 denotes a storage unit, which includes a memory or the like, and outputs one block instruction d of the execution program corresponding to the address designation from the update unit 1 to the analysis unit. 3 is an analysis means, CP
U, and outputs an increment instruction a to the updating means 1 in order to retrieve the execution program stored in the storing means 2, and based on the address designated by the updating means 1, An execution program, which is a processing procedure, is analyzed for each block (for each instruction), and based on the analyzed program instruction of one block, machine table movement command data f and display data h and control data g, which are control data, and a control signal g. Is output, and when the program instruction is a stop code, a stop command is output as a control signal for stopping the machine table or the like. Reference numeral 4 denotes a machine operation board, which includes a key input unit and the like for issuing a machine command to the analysis unit 3, and operates a machine table and the like based on a key input by an operator.

Reference numeral 5 denotes a machine control means which comprises a control circuit for controlling a machining table, a motor drive shaft and the like.
And a machine device having a machining table, a motor drive shaft, and the like, based on the input of the machine table movement command data f and the control signal g corresponding to the machine table movement command data. Reference numeral 6 denotes a display means, which comprises a display control circuit and the like, and is a machine for processing the shape of the workpiece and the workpiece based on the input of the display data h from the analyzing means 3 and the control signal g corresponding to the display data. The coordinate positions of the table, the motor drive shaft and the like are displayed and controlled on the CRT 7.

A conventional electric discharge machine is constructed as described above. FIG. 6 is a flowchart showing the operation of FIG. 5, and the operation will be described. First, in step 1,
The analysis means 3 analyzes the execution program of one block in order to program-check the execution program stored in the memory of the storage means 2 and executes machine table movement command data f, control signal g, display data h, control signal g, etc. Generate

In step 2, the analyzing means 3 determines whether or not the analyzed execution program is a stop code for temporarily stopping the machining process. If so, go to step 4.

At step 3, the machine table movement command data f and a control signal g corresponding to the machine table movement command data are output from the analysis means 3 to the machine control means 5, and the machine control means 5 outputs the machine table movement command. Data f
And drive control of a machine table, a motor drive shaft and the like based on the control signal g. Further, the display data h and the control signal g corresponding to the display data are output from the analysis means 3 to the display means 6, and the display means 6 outputs the shape of the workpiece and the machine table based on the display data h and the control signal g. And the processing state such as the processing speed are displayed on the CRT 7.

In step 4, a control signal g of a stop command is output from the analyzing means 3 to the machine control means 5, and the machine control means 5 controls the machine table, the motor drive shaft and the like based on the control signal g of the stop command. Stop. Also, the control signal g of the stop command is similarly output from the analysis means 3 to the display means 6, and the display means 6 holds the previous display state and proceeds to the next step A.

In step A, when the operator holds the stopped state of the display of the mechanical device and the CRT 7, the operator does not input the start key, but when the operator checks the next execution program from the stopped state in the same manner. The operator inputs a start key on the machine operation board 4 and proceeds to the next step 6.

In step 6, when the start key is input, the analyzing means 3 outputs an increment instruction to the updating means 1 to check the next execution program, and the updating means 1 outputs the next address. Is specified in the storage means 2, and the storage means 2 outputs the next one block execution program to the analysis means 3, and proceeds to the next step 7.
In step 7, the analyzing means 3 determines whether or not the program has been updated by the updating means 1 but is the final program. If the program is not the final program, the analyzing means 3 returns to step 1 again and continues the processing. If so, end the program analysis.

In the conventional electric discharge machining apparatus as described above, when a machining program to be operated in the same manner as actual machining is program-checked, if a stop code is included in the machining program, the check is performed. The machine is stopped based on the stop code of the machining program, and the operator must always be at the side to operate the key and start it by restarting the stopped machine. there were.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem. Even if a stop code is included in a program, the operator does not stop the mechanical device based on the stop code until the final program. It is an object of the present invention to obtain a numerical control device capable of performing a program check without the intervention of key operation by the user.

[0011]

According to a first aspect of the present invention, there is provided a numerical controller for reading out and analyzing an execution instruction stored in a storage means for each block, and executing a machine control instruction and a machine control instruction. Corresponding machine table movement command data,
Along with outputting a display control command and display data for display corresponding to the display control command, if the execution command is a stop code, a stop command and a machine stop command are output,
When the execution instruction read at the time of the program check is a stop code, the stop instruction, an analysis unit that outputs a timer-on instruction in addition to the machine stop instruction, and the machine control instruction and the machine control instruction from the analysis unit. Machine control means for controlling the drive of the machine table of the machine based on the machine table movement command data corresponding to the machine control command, and stopping the drive of the machine based on a machine stop command from the analysis means, Display means for displaying a machining state on a display unit based on the display control command from the analysis means and display data corresponding to the display control command, and a predetermined time based on a timer-on command from the analysis means. Timer means for outputting a start command after counting, and an increment command sequentially output from the analysis means for Updating the execution instruction read from the storage means, stopping the update of the execution instruction by the increment instruction when the analysis means outputs the stop instruction, and then reading the update instruction from the storage means again by a start instruction output from the timer means. Updating means for updating an execution instruction to be executed. According to a second aspect of the present invention, there is provided a numerical control device, wherein the numerical control device according to the first aspect reads externally a setting means for setting a time counted by a timer means, and reads a time set by the setting means. Reading means for setting the timer means.

[0012]

In the invention according to the first aspect, the analyzing means reads out and analyzes the execution instructions stored in the storage means for each block, and executes a machine control command and a machine table corresponding to the machine control command. In addition to outputting movement command data, display control command and display data for display corresponding to the display control command, when the execution command is a stop code, a stop command and a machine stop command are output. If the execution instruction read out in step (1) is a stop code, a timer-on instruction is output in addition to the stop instruction and the machine stop instruction. The machine control means drives and controls a machine table of a mechanical device based on the machine control command from the analysis means and machine table movement command data corresponding to the machine control command, and based on a machine stop command from the analysis means. To stop driving the mechanical device. The display means displays a machining state on a display unit based on the display control command from the analysis means and display data corresponding to the display control command, and the timer means determines a machining state based on a timer-on command from the analysis means. After measuring the time, a start command is output. The updating unit updates an execution instruction read from the storage unit by an increment instruction sequentially output from the analysis unit, and stops updating the execution instruction by the increment instruction when the analysis unit outputs a stop instruction. The execution command read from the storage unit is updated again according to the start command output from the timer unit. Further, in the invention according to claim 2, a setting means and a reading means are additionally provided to the invention according to claim 1, and a time for counting by a timer means is externally set in the setting means, The reading means reads the time set in the setting means and sets the time in the timer means.

[0013]

FIG. 1 is a block circuit diagram showing an embodiment of the present invention. Reference numerals 2, 5, and 6 are the same as those in the prior art. Referring to FIG. 1, reference numeral 1A denotes an updating unit which includes an address counter circuit or the like, and outputs an address c corresponding to the execution program stored in the storage unit 2 by an increment instruction (call instruction) from an analyzing unit (described later). . Also, the storage means 2 is operated by a stop command from the analysis means (described later).
The output of the address c corresponding to the execution program stored in is stopped. Further, in a state where the address output is stopped by the stop command from the analyzing means (described later), the address corresponding to the next execution program is output by the start command from the timer means (described later). 3A
Is an analyzing means, which comprises a CPU or the like, outputs an increment instruction a to the updating means 1A to retrieve the execution program stored in the storing means 2, and stores it in the storing means 2 based on the address designated by the updating means 1A. The execution program, which is the processing procedure of the electric discharge machining, is analyzed for each block (each instruction), and based on the analyzed program for one block, the machine table movement command data f and the display data h, which are control data, are displayed. , A control signal g that is a control command
When the program is a stop code, a control signal g of a stop command for stopping the machine table or the like is output to the machine control means 5 and the display means 6. or,
When analyzing the stop code, the analyzing means 3A updates the updating means 1A.
Outputs a stop instruction to stop updating the program. Further, when the execution instruction read at the time of the program check is a stop code, in addition to the stop instruction and the machine stop instruction, a timer means (described later)
Outputs a timer command i for turning on the timer inside the timer means. Reference numeral 8 denotes a timer means, which is composed of a timer circuit and the like, and which receives a timer command i from the analysis means 3A.
, A predetermined time is counted, and when that time has elapsed, a start command j is output to the updating means 1A.

The present invention is configured as described above,
FIG. 2 is a flowchart for checking the program in FIG. 1, and its operation will be described. First, in step 1, the analyzing means 3A analyzes one block of the execution program to program-check the execution program stored in the storage means 2 addressed from the updating means 1A, and executes the machine table movement command data f , A control signal g corresponding to the machine table movement command data, display data h, a control signal g corresponding to the display data, and the like.

In step 2, the analyzing means 3A determines whether or not the analyzed execution program of one block is a stop code for temporarily stopping the machining process. If not, the flow proceeds to step 3. If there is a stop code, go to step 4.

At step 3, the machine table movement command data f and the control signal g are output from the analysis means 3A to the machine control means 5, and the machine control means 5 transmits the machine table movement command data f and the machine table movement command data. And drive control of the machine table, the motor drive shaft, and the like based on the control signal g corresponding to. Also, the display data h and the control signal g corresponding to the display data are output from the analysis means 3A to the display means 6, and the display means 6 outputs the workpiece based on the display data h and the control signal g corresponding to the display data. The shape, the coordinate position of the machine table, and the processing state such as the processing speed are displayed on the CRT 7.

In step 4, a control signal g for a stop command is output from the analysis means 3A to the machine control means 5 and the display means 6, and the machine control means 5 outputs a control signal to the machine table and the motor based on the control signal g for the stop command. The drive shaft and the like are stopped, and the display means 6 retains the previous display state.

In step 5, the analyzing means 3A outputs a timer command to the timer means 8 to turn on the timer of the timer means 8 when the stop code is analyzed at the time of the program check. A predetermined time is counted according to the command, and after the time has elapsed, a start command j for starting the updating means 1A is output.

In step 6, the updating means 1A updates the address corresponding to the next one block based on the start command j from the timer means 8, specifies the address of the storage means 2, and sends the analysis means from the storage means 2 to the analysis means. An execution program of one block is output to 3A. In step 7, the analyzing means 3A determines whether the one block execution program updated by the updating means 1A is the last program, and returns to step 1 if the one block execution program is not the last program. If the execution program of the one block is the final program, the analysis means 3A ends the program check.

As described above, when the stop command is output from the analysis means 3A during the program check, the machine control means 5 stops, but after a lapse of a certain time from the stop command, the machine control means 5 restarts the machine control means 5 from the analysis means 3A. Since the operation is performed, the operator can be resident and there is no need for key operation or the like, and the execution program can be automatically checked.

FIG. 3 is a block circuit diagram of another embodiment, wherein 1A, 2, 5, 6, and 7 are the same as those described above.
In the figure, reference numeral 3B denotes an analysis means, which comprises a CPU or the like, analyzes an execution program, which is a processing procedure of electric discharge machining, stored in the storage means 2 addressed by the updating means 1A for each block, and analyzes the execution program. Based on the program of one block, the machine table movement command data f and the display data g, which are control data, and the control signal h are output. If the program is a stop code, the machine table is stopped. The command is output to the machine control means 5 and the display means 6. When the stop code is analyzed, the analyzing means 3B sets the stop instruction b for stopping the updating of the program to the updating means 1A and the setting means (described later) for the reading means (described later). A read command 1 for reading the timer value is output. Further, when the execution instruction at the time of the program check is a stop code, a timer instruction i for turning on a timer inside the timer is output to the timer 8A in addition to the stop instruction b. 8A is a timer means,
A timer time is set via a reading means (described later), a timer time set by a timer command i from the analyzing means 3B is counted, and when the time elapses, the updating means 1A is sent to the updating means 1A. A start command j is output. Reference numeral 9 denotes a reading means, which comprises an I / O port and the like, reads a timer time set by a setting means (described later) according to a reading command 1 from the analyzing means 3B, and sets the timer time in the timer means 8A. Numeral 10 denotes a setting means, which comprises a time setting circuit or the like, and which allows the operator to arbitrarily set the program operation stop time from outside.

Another embodiment is configured as described above. FIG. 4 is a flowchart for checking the program shown in FIG. 3, and its operation will be described. First, in step 0, the operator sets a desired program operation stop time (timer time) in the setting means 10 and reads the set timer time by the reading means 9 to read the timer time.
A is set to the timer time.

In step 1, the analyzing means 3B analyzes one block of the execution program to check the execution program stored in the storage means 2 addressed from the updating means 1A, and analyzes the machine table movement command data f , A control signal g corresponding to the machine table movement command data, display data h, a control signal g corresponding to the display data, and the like.

In step 2, the analyzing means 3B determines whether or not the analyzed execution program of one block is a stop code for temporarily stopping the machining process. If not, the flow proceeds to step 3. If there is a stop code, the process proceeds to step 4.

In step 3, the machine table movement command data f and the control command g are output from the analysis means 3B to the machine control means 5, and the machine control means 5 outputs the machine table movement command data f and the machine table movement command data. And drive control of the machine table, the motor drive shaft, and the like based on the control signal g corresponding to. Further, display data h and a control signal g corresponding to the display data are output from the analysis means 3B to the display means 6, and the display means 6 processes the workpiece based on the display data h and the control signal g corresponding to the display data. coordinate position, such as the shape and the machine table and displays the processing conditions such as processing speed on CRT 7.

In step 4, a control signal g of a stop command is output from the analyzing means 3B to the machine control means 5 and the display means 6, and the machine control means 5 outputs the control signal g of the stop command.
Stop the machine table and motor drive shaft, etc. based on
The display means 6 retains the previous display state.

In step 5, when the analysis means 3B analyzes the stop code at the time of the program check, the analysis means 3B turns on the timer of the timer means 8A with respect to the timer means 8A.
The timer means 8A outputs a start signal j for activating the updating means 1A after counting the time set by the timer command.

In step 6, the updating means 1A updates the address corresponding to the next one block based on the start command j from the timer means 8A, and designates the address of the storage means 2; An execution program of one block is output to 3B. In step 7, if the execution program of one block updated by the updating means 1A is not the final program, the analyzing means 3B executes step 1
When the execution program of the one block is the final program, the analysis unit 3B ends the program check.

As described above, an arbitrary program operation stop time (timer time) is set by the operator before the program check is performed, and if the execution instruction during the program check is a stop code, the stop instruction is output. However, since an instruction to turn on the timer is also output, the timer means 8A
Activates the updating means 1A, so that there is no need for an operator to perform a key operation or the like, and the execution program can be automatically checked.

[0030]

As described above, according to the present invention, when the operation of the apparatus is checked by analyzing the contents of a program actually used, even if a stop code is included in the program, after a certain time has elapsed, Since the program check can be automatically performed again, the machine operation by the operator during the program check is eliminated, and the work efficiency of the operator can be improved.

[Brief description of the drawings]

FIG. 1 is a block circuit diagram showing one embodiment of the present invention.

FIG. 2 is a flowchart of a program check in FIG. 1;

FIG. 3 is a block circuit diagram of another embodiment.

FIG. 4 is a flowchart for checking a program in FIG. 3;

FIG. 5 is a block circuit diagram showing a conventional electric discharge machine.

FIG. 6 is a flowchart showing the operation of FIG.

[Explanation of symbols]

 1A Update means 2 Storage means 3A, 3B Analysis means 5 Machine control means 6 Display means 7 CRT 8, 8A Timer means 9 Reading means 10 Setting means

Claims (2)

(57) [Claims] 1. An execution instruction stored in a storage means is
Each block is read and analyzed, and a machine control command, machine table movement command data corresponding to the machine control command, a display control command, and display data for display corresponding to the display control command are output. If it is a stop code, a stop command and machine stop command are output.
The execution instruction read during the program check
If the stop code is a stop code,
Analyzing means also outputs an addition to timer-on instruction decree, controls the drive of the machine table of the machine based on the machine control command and the machine table moving command data corresponding to the machine control command from said analyzing means Together with a machine control unit for stopping the driving of the mechanical device based on a machine stop command from the analysis unit; and a processing state based on the display control command from the analysis unit and display data corresponding to the display control command. Display means for displaying on a display unit, timer means for outputting a start command after counting a predetermined time based on a timer -on command from the analysis means, and an increment command sequentially output from the analysis means, Updating the execution instruction read from the storage means,
When the analyzing means outputs a stop instruction, the updating of the execution instruction by the increment instruction is stopped, and thereafter , the update for updating the execution instruction read from the storage means again by a start instruction output from the timer means. And a means for controlling the numerical value. 2. The apparatus according to claim 1, further comprising setting means for externally setting a time counted by a timer means, and reading means for reading the time set by the setting means and setting the time in the timer means. Numerical control device as described.