JPS6359604A - Method for changing working route in numerical controller - Google Patents

Abstract

PURPOSE:To facilitate the correcting work by directly indicating a change locus on a screen where a tool locus is displayed of a visual display device and editing the changed tool locus to change a working program. CONSTITUTION:If it is found that a working route from a coordinate position PSA to a coordinate position P1 is wrong because of the existence of an obstacle on the way when a tool locus is displayed on the screen of a visual display device 10 after the working route is programmed, coordinate positions PS, P1, and PI are designated in order with a light pen 14 and an insertion command is executed. A block cell of the coordinate position PI is generated in accordance with the control program of a numerical controller itself stored in an auxiliary memory 12, and the pointer of a data cell 15 which points the coordinate position P1 is changed to point a data cell 23 of the coordinate position PI, and the pointer of the data cell 23 is changed to point a data cell 16 of the coordinate position P1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a machining path changing method for a numerical control device.

[Conventional technology]

FIG. 7 is a block diagram showing the hardware configuration of a conventional numerical control device, and FIG. 8 is a flowchart showing the software configuration.

In FIG. 7, 1 is a main central processing unit (hereinafter referred to as main CPU), and 2 is a first controller that controls the servo motor 6.
3 is a second sub-CPU that controls the interface with the processing machine, 4 is the interface section with the processing machine, 5 is an amplifier, 6 is a servo motor, and 7 is a program for controlling the numerical control device itself. , main memory storing machining programs and intermediate data, 8
is a paper tape reader, a puncher, 9 is an input/output (hereinafter referred to as I)
10 is a visual display device such as a cathode ray tube, and 11 is a keyboard.

Next, the contents of the process will be explained with reference to FIG.

In step (2), the input process for the modified program, one block of the modified program is read and converted into an internal format.

In the incremental value calculation/correction calculation process of step ■, the internal format obtained in step ■ is input, and the movement amount of one block △
Calculates X, △Y, △Z, and performs various correction calculations (tool diameter, tool length, etc.).

In the interpolation process of step O, interpolation process is performed based on the movement amounts ΔX, ΔY, ΔZ, etc. obtained in step (2). That is, the amount of movement ΔX during the minute time ΔT.

Find Δy and Δ2.

In the setting/display process of step ◎, various data in the numerical control device are displayed on the visual display device 10, and various setting processes by the operator are also controlled.

In the servo processing of step [F], the moving amounts ΔX, Δy, and Δ2 obtained in step ◎ are further converted into subdivided moving amounts of minute time Δt, and the servo processing is performed.

In the interface processing with the processing machine in step [F], input/output processing with the machine operation panel (switches) is performed.

input, output, lamp, etc.). In addition, machine-assisted processing (M
It executes various functions such as spindle rotation processing (S code), tool processing (T code), etc., and controls the surroundings of the machine tool.

FIG. 9 is a block diagram showing the structure of each data cell in the main memory 7 used for the incremental value calculation/correction calculation process in step (2) in FIG. 8. In the figure, PS, PI, P2. P
E is the defined coordinate position, 15 to 18 are each coordinate position PS,
Pi, P2. This is a data cell that stores each data in the PE. As shown in the figure, each data cell 15-18 is provided consecutively on the main memory 7.

[Problem that the invention seeks to solve]

Conventional numerical control devices are configured as described above, so
Even if the tool trajectory can be displayed on the screen of the visual display device, for example, even if a phenomenon such as the tool trajectory 21 colliding with the workpiece 190 jig 20 as shown in Fig. 10 is detected, the cutting program itself cannot be directly changed. There are problems such as it is time-consuming, requires reconfirmation after correction, and there is a risk of making correction mistakes.

This invention was made in order to solve the above-mentioned problems, and aims to provide a method for changing the machining path of a numerical control device that can easily change the machining path (without causing errors). purpose.

[Means for solving problems]

A machining path changing method for a numerical control device according to the present invention displays a tool trajectory on the screen of a visual display device, instructs a changing trajectory using a pointing device on the screen, and displays the changed tool trajectory displayed on the screen. By editing the tool trajectory, the cutting program is changed and the machining path is changed.

[For production]

The method for changing the machining path of the numerical control device in this invention is as follows:
The cutting program can be changed directly from the screen of the visual display device that displays the tool trajectory, and the machining path can be changed.

〔Example〕

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an example of the configuration of the software in a numerical control device that implements the machining path changing method for a numerical control device of the present invention, and in the figure, 1 to 11 indicate the prior art described above. This is the same or equivalent portion of FIG. 7. 14 is a pointing device such as a light ben used to specify a certain point on the screen of the visual display device 10, and 12 is software that calculates the coordinate values of the coordinate position specified by the pointing device 14 and changes the program. 13 is an interface between the pointing device 14 and the main CPU 1.

FIG. 2 is a flowchart showing the software configuration of the numerical control device shown in FIG.

FIG. 3 shows the structure of a data cell 22 of one block of data in the main memory 7 used for the incremental value calculation/correction calculation process in step (3) of FIG. In this memory cell 22,
A pointer to the next data cell (containing the memory address of the next data cell) is added.

FIG. 4 is a block diagram showing the state of each coordinate position and the data cells of the main memory 7 that store the data of the coordinate position in this invention. In the figure, the same or equivalent parts as in FIG. 9 showing the prior art described above are designated by the same reference numerals. As shown, in accordance with the present invention, each data cell 15-18 contains a pointer to the next data cell so that each data cell 15-18 is stored in main memory 7.
They no longer need to be consecutive next to each other on the top.

FIG. 5 is a block diagram showing each coordinate position and the state of the data cells in the main memory 7 that store the data of the coordinate position when changing the machining path according to the present invention. In the figure, the same or corresponding parts as in FIG. 4 described above are designated by the same reference numerals. PI is a coordinate position newly specified for changing the machining path, and 23 is a data cell storing data of this coordinate position PI.

FIG. 6 is a flowchart showing the internal processing of the machining path changing method of the numerical control device according to the present invention.

Next, a machining path changing method using the numerical control device configured as described above will be explained with reference to FIGS. 1 to 6.

I created a program for the machining path as shown in Figure 4.
When the tool trajectory is displayed on the screen of the visual display device 10, if the machining path from the coordinate position PS to Pl is inconvenient because it collides with an object on the way, the coordinate position can be changed using the pointing device 14 such as a light ben, for example. PS, PI
, PI and execute the insert command. According to the control program of the numerical control device itself included in the auxiliary memo IJ-12, a block cell at the coordinate position PI is first created as shown in FIG. 5, and then a block cell at the coordinate position P1 is executed. The pointer of data cell 15 that specified
3, and the pointer of the data cell 23 is set to point to the data cell 16 at the coordinate position fP1.

Furthermore, although this was not done in this case, for example, when connecting the coordinate position PS to P2 with a circular arc command of a certain radius in FIG. By inputting data such as the rotation direction and radius, the contents of the data cell 17 at the coordinate position P2 are rewritten to an arc, and the pointer in the data cell 15 at the coordinate position ps is directly specified to the data cell 17 at the coordinate position P2. Just do it like this. At this time, the data cell 16 at coordinate position tP1 is no longer needed, so create another data cell that connects only unnecessary data cells and assign it to it. Just assign it.

The processing after step (2) in FIG. 2 is the same, but since step (2) has been changed, the final trajectory will naturally also change.

FIG. 6 shows an outline of the process.

Although a light ben is used as the pointing device in the above embodiment, it may be a mouse or a trackball as long as it can indicate a certain point on the screen of the visual display device.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to change the cutting trajectory of the numerical control device by directly instructing the changing trajectory from the tool trajectory display screen of the visual display device and editing the changed tool trajectory. I did it like this,
This eliminates the need to directly modify the Canadian program, making modification work much easier, and has the effect of reducing the possibility of making modification mistakes.

[Brief explanation of drawings]

1 and 2 are block diagrams and flowcharts showing the configuration of the software and the configuration of the software for implementing the method for changing the machining path of a numerical control device according to an embodiment of the present invention, and FIG. An explanatory diagram showing the structure of data cells of one block of data in the main memory in this example, and FIGS. 4 and 5 are blocks showing the relationship between each data cell before and after changing the machining trajectory in this example. 6 are flowcharts showing the process of machining path change processing in this embodiment, and FIGS. 7 and 8 are block diagrams and flowcharts showing the hardware configuration and software configuration of a conventional numerical control device. 9 is a block diagram showing the relationship between each data cell in a conventional main memory, and FIG. 10 is a perspective view showing the relationship among a workpiece, a jig, and a tool trajectory. 1 is the main CPU 12, 3 is the 1st CPU. second sub CPU,
6 is a servo motor, 7 is a main memory, 10 is a visual display device, 12 is an auxiliary memory, and 14 is a pointing device. In addition, in the figures, the same reference numerals indicate the same or equivalent parts. Figure 3 Figure 5 Figure 6 Car fL business plan Figure 9

Claims (1)

[Claims] Displaying a tool trajectory on a screen of a visual display device, instructing a changed trajectory using a pointing device on the screen,
A machining path changing method for a numerical control device, in which a machining program is changed and a machining path is changed by editing a changed tool trajectory displayed on the screen.