JP2702555B2 - Numerical control unit reordering method - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a method for re-routing a numerical controller (CNC),
In particular, the present invention relates to a re-forwarding method of a numerical control device which can always re-start from a backward end point regardless of a cursor movement after the backward movement.

[Conventional technology]

Numerical control units (CNC) have been developed that can reverse or re-run during automatic operation. For example, by operating the reverse switch, the machining path that has been passed so far can be traced back (reverse),
Further, the reversed machining path can be moved forward (re-forward) again.

Further, by stopping the operation after returning to the predetermined position and switching the operation mode of the numerical controller from the memory mode to the edit mode, it is possible to edit the NC program after the returned position.

When the editing operation is completed and the operation is switched to the memory mode again and the operation is started, the re-ordering is performed again from the position indicated by the cursor on the program display screen according to the edited NC program.

[Problems to be solved by the invention]

However, when the operator moves the cursor to another position during editing, it is necessary to return the cursor to the position at the end of the backward movement at the end of the operation, which is troublesome. If this operation is neglected, the operation is started from another position, and in some cases, the work or the tool may be damaged, which is dangerous.

The present invention has been made in view of such a point,
It is an object of the present invention to provide a reordering method of a numerical control device capable of reordering from a backward end point regardless of a cursor movement or the like after the backward movement.

[Means for solving the problem]

In order to solve the above-mentioned problems, the present invention provides a numerical control device (CNC) that re-executes after stopping automatic operation and reversing the NC program. Performs reverse operation while sequentially updating the indicated program pointer, stops reverse operation, performs editing work in edit mode, reads out the program pointer stored immediately before the end of reverse operation, and reads the program pointer on the program display screen when reordering command. A reordering method for a numerical control device is provided, wherein a cursor is moved to the position of the program pointer and reordering operation is performed in accordance with an edited NC program.

[Action]

While the program pointer indicating the execution position on the NC program is sequentially updated, the reverse operation is performed, the editing operation is performed, and the cruise operation is started from the program pointer immediately before the end of the reverse operation in the re-operation operation.

〔Example〕

 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 2 is a schematic configuration diagram of hardware of a numerical controller for implementing the present invention. The processor 11 controls the entire numerical controller according to a system program stored in the ROM 12. EPROM or EEPROM is used for the ROM 12. The RAM 13 is a DRAM, and stores movement data, modal data, a program pointer, various other data, and input / output signals, which will be described later. Non-volatile memory
14 uses battery backed CMOS, NC
A program 140, other parameters, a pitch error correction amount, and the like are stored.

The graphic control circuit 15 converts the digital signal into a signal for display and supplies the signal to the display 16. The display 16 uses a CRT or a liquid crystal display, and displays the NC program 140, the position of each axis, the state of input / output signals, and the like. Operation panel 17
Cycle start button 17a that outputs an operation start signal,
There are a feed hold button 17b for outputting a pause signal, a single block switch 17c for outputting a stop signal for stopping at a boundary between blocks, a reverse switch 17d, and another keyboard 17e.The operation of the machine tool 18 or various data Used for input. The above components are connected by a bus 19.

In this figure, components such as an axis control circuit, a servo amplifier, a spindle amplifier, and a PMC (programmable machine controller) are omitted.

Here, when the operator operates the keyboard 17e to set the memory mode and presses the cycle start button 17a,
The processor 11 stores the NC program 140 from the non-volatile memory 14.
Is read out for each block, the pulse distribution is performed while the data is converted into movement data, and forward processing is performed. At the same time, the movement data and the modal data necessary for the preprocessing are stored in the RAM 13. When the reverse switch 17d is turned on during the forward traveling, the pulse distribution is performed based on the stored movement data and modal data, and the traveling is reversed. At the same time, the program pointer indicating the execution position on the NC program 140 is stored in the RAM 13 while being sequentially updated.

When the reverse movement is performed to the target position, the operator presses the feed hold button 17b or the single block switch 17c.
To stop the backward movement, operate the keyboard 17e, switch the operation mode to the edit mode, perform the required editing work, and after completing this, set the memory mode, turn off the feed hold switch 17d, Press the cycle start button 17a.

By this operation, the operation restart signal is input to the processor 11, the processor 11 reads out the program pointer stored immediately before the end of the backward movement, and moves the cursor on the program display screen to this position to thereby determine the position at the end of the backward movement. The reordering is performed according to the edited program.

FIG. 3 is a program display screen of the display 16 when the operation is resumed. In the figure, an NC program 140 is displayed on a display screen 20. For example, the cursor 21 is moved to a position 141 during editing.
Even if it has moved to b, it is automatically moved to the position 141a at the end of the backward movement.

FIG. 1 is a flowchart of the processing of the processor 11 described above. In the figure, a numerical value following S indicates a step number.

[S1] It is determined whether a reverse command has been issued. If a command has been issued, the process proceeds to S9, and if not, the process proceeds to S2.

[S2] It is determined whether the reordering is a reordering after the reversal or a normal ordering.If reordering is to be performed, the process proceeds to S3.
Go to.

[S3] The program pointer at the end of the backward movement is read.

[S4] In the case of reordering, the program pointer is set to the position of the read program pointer. In the case of reordering, the program pointer is set according to the order, the cursor is moved to that position, and the data of the block is read.

[S5] It is determined whether execution of all blocks of the NC program has been completed. If the execution has been completed, the process ends. If not, the process proceeds to S6.

[S6] The read data is converted into moving data in the execution block format.

[S7] The movement data, modal data, and the program pointer are stored in the RAM 12.

[S8] Pulse distribution is performed based on the created movement data and modal data, and the process returns to S4.

[S9] The movement data, modal data and program pointer stored in the forward traveling are read out.

[S10] It is determined whether or not a stop signal has been input. If the stop signal has been input, the process ends. If not, the process proceeds to S11.

[S11] The program pointer is stored at a predetermined location in the RAM 12 where the backward data is stored.

[S12] Pulse distribution is performed based on the read movement data and modal data, and the process returns to S9.

As described above, the program pointer is stored in the RAM 12 while being sequentially updated at the time of backward movement, and is read out at the time of reordering, whereby the operation is started from the position at the end of backward movement.

〔The invention's effect〕

As described above, in the present invention, the retrograde operation is performed while sequentially updating the program pointer indicating the execution position on the NC program, the editing operation is performed, and the re-running operation starts from the program pointer immediately before the end of the retrograde operation. Since the operation is started, even when the editing operation is performed by moving the cursor, the program pointer can always be re-started from the program pointer immediately before the end of the reverse operation, thereby improving operability and safety.

[Brief description of the drawings]

FIG. 1 is a flow chart of a reordering method of a numerical controller according to one embodiment of the present invention, FIG. 2 is a block diagram showing a schematic configuration of hardware of a numerical controller for implementing the present invention, The figure shows a program display screen according to one embodiment of the present invention. 11 Processor 13 RAM 14 Non-volatile memory 17 Operation panel 20 Display screen 21 Cursor 140 NC program 141a Position at the end of backward movement

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toshiaki Otsuki 3580 Kobaba, Oshino-mura, Oshino-mura, Minamitsuru-gun, Yamanashi Pref. No. 3580 FANUC CORPORATION Product Development Laboratory (56) References JP-A-50-43386 (JP, A) JP-A-51-38259 (JP, A) JP-A-62-77610 (JP, A) 2-37404 (JP, A)

Claims (1)

(57) [Claims] 1. A method for re-starting a numerical controller (CNC) for re-starting after interrupting automatic operation and reversing an NC program, wherein a program pointer indicating an execution position on the NC program is sequentially updated. While performing the reverse operation, stop the reverse operation, perform the editing work in the edit mode, read the program pointer stored immediately before the end of the reverse operation at the time of the reorder command, and move the cursor on the program display screen to the program pointer. Moving to the position and performing re-operation in accordance with the edited NC program.