JPH06114678A - Tool locus display device of nc device - Google Patents

Abstract

PURPOSE:To provide a tool locus display device for NC device, which can display the NC data along with checking the locus of a tool and thereupon performs debugging of the NC data certainly. CONSTITUTION:When NC data is read piece by piece from an external memory device 40 and executed by a CPU 10, from the NC data executed, respective specific codes are stored in the F-code memory region 35, S-code memory region 36, M-code memory region 34, and macro-code region 37, and at the same time, the moving locus of the tool is calculated on the basis of the NC data and displayed together with the codes stored in a CRT display device 70, and thereby debugging of the NC data can be made certainly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool locus display device of an NC device capable of displaying a tool locus based on NC data on a screen.

[0002]

2. Description of the Related Art Conventionally, there is known a tool locus display device of an NC device capable of displaying an interference state between a workpiece and a tool on a screen before machining and performing simulation. In the tool trajectory display device, first, the contents of each block in which the NC data is read are analyzed, and the position of the tool is interpolated based on the analyzed contents. Then, image data of the tool with respect to the workpiece is created according to the interpolated position of the tool, and is displayed on the screen of the CRT display device.
Thereby, the movement of the tool with respect to the workpiece can be confirmed on the screen of the CRT display device.

[0003]

In the NC data, in addition to the data of the moving position of the tool, an F code for instructing the moving speed of the tool, an S code for instructing the rotational speed of the tool, and a G indicating the kind of the feed of the tool. Machine tools are controlled by entering special codes such as codes. However, in the tool trajectory display device as described above, only the position of the tool with respect to the workpiece is displayed. Also, NC along with the position of the tool with respect to the workpiece
Although some data are displayed, special command codes such as S code and G code indicating the type of tool feed are not valid only in one block in which the special command code is described, and the same special command is used. When giving a command by a code, the description is often omitted. Therefore, in order to know which special command code is currently valid, the operator should look at the displayed NC data. You need to determine which code is valid.

The present invention has been made to solve the above problems, and its purpose is to identify a special instruction code that is currently valid in the NC data being executed. The object is to provide a tool locus display device capable of performing the same.

[0005]

The structure of the invention for solving the above problems comprises a plurality of storage areas for storing the contents of the specific command described in the NC data, and a data reading means for sequentially reading the NC data. Data detecting means for detecting a specific command of the NC data read by the data reading means, specific command storing means for storing the specific command detected by the data detecting means in the storage area, and the data reading means Position calculation means for calculating the position of the tool by interpolating between the start point and the end point of the movement based on the NC data read in, and the image data of the tool calculated by the position calculation means are created. Image display means, and image display for displaying the image data of the tool for the workpiece created by the image creation means and the specific command stored in the plurality of storage areas. Characterized by comprising a stage.

[0006]

When the NC data is sequentially read by the data reading means, the data detecting means detects a specific command and stores it in a plurality of storage areas by the specific command storing means. Then, the position calculation means interpolates between the start point and the end point of the movement based on one block in which the NC data is read, and the position of the tool is calculated. Next, the image creating means creates image data of the tool with respect to the workpiece based on the position of the tool calculated by the position calculating means. Then, the image display means displays the image data of the tool for the workpiece created by the image creation means and the specific command stored in the storage means.

[0007]

EXAMPLES The present invention will be described below based on specific examples. FIG. 1 is a block diagram showing a configuration of a tool locus display device of an NC device according to the present invention. CPU
A ROM 20 storing a control program and a RAM 30 storing various data are connected to the memory 10. C above
An external storage device 40 that stores NC data is connected to the PU 10. Further, the CPU 10 is connected to a bit map memory 50 which stores created composite image data described later. And a CRT that achieves image display means
The controller 60 reads the composite image data stored in the bitmap memory 50, and the trajectory of the tool T with respect to the workpiece W is displayed on the CRT display device 70.

A display control program area 21 for storing a program for controlling the display of the tool path and the screen layout shown in FIG. 3 is formed in the ROM 20.
Further, in the RAM 30, a workpiece shape data area 31 for storing the shape of the workpiece W, a tool shape data area 32 for storing the shape of the tool T, a reference point indicating coordinates of the current position of the tool on a screen described later. A current position data storage area 38 for storing coordinates (X _, Y, Z), an F code storage area 33 for storing an F code for instructing the feed speed of the tool T, and an S code for instructing the rotational speed of the tool T are stored. S code storage area 34 and M for instructing the operation of auxiliary functions such as tool change
An M code storage area 35 for storing a code, a G code storage area 36 for storing a G code for instructing a special function such as circular interpolation, and a macro code area 37 for storing a command uniquely created by a user are formed. ing.

Next, the CP used in the apparatus of this embodiment.
Based on the flowchart of FIG. 2 showing the processing procedure of U10, a description will be given with reference to an explanatory diagram showing an example of the NC program of FIG. First, in step 100, the external storage device 4
One block is read from the NC data stored in 0. Then, in step 102, the read N
It is determined whether or not there is a G code in the C data. here,
If there is no G code, the process proceeds to step 106, and if there is a G code, the process proceeds to step 104 to store the contents of the G code in the G code storage area 36, and then to step 1
Proceed to 06.

Next, at step 106, it is judged whether or not there is an M code. When there is no M code, the routine proceeds to step 110, and when there is an M code, the routine proceeds to step 108, where the M code is stored in the M code storage area 35. After storing the contents of, proceed to step 110. Similarly, in step 110, it is determined whether or not there is an S code. If there is no S code, the process proceeds to step 114. If there is an S code, the process proceeds to step 112, and the contents of the S code are stored in the S code storage area 34. After that, the process proceeds to step 114.

Then, in step 114, it is judged whether or not there is an F code, and if there is no F code, step 118 is performed.
If there is an F code, the process proceeds to step 116, the contents of the F code are stored in the F code storage area 33, and then the process proceeds to step 118. And finally step 11
8, it is determined whether or not there is a macro code. If there is no macro code, the process proceeds to step 122. If there is a macro code, the process proceeds to step 120, and the contents of the macro code are stored in the macro code storage area 37. After that, the process proceeds to the simulation process of step 122.

This simulation processing is as shown in FIG. 4, and in step 200, the shape data of the workpiece W previously stored in the workpiece shape data area 31 of the RAM 30 is read. Next, at step 202, the NC data read at step 100 is analyzed. As this processing,
From the contents described in one block of NC data, the starting point position (X _0, Y ₀ , Z ₀ ) and the end point position (X _e, Y) of the tool path are determined.
_e, Z _e ) is calculated.

Next, the process proceeds to step 204, where the interpolation point N
o.I = 1 is set. Next, the routine proceeds to step 206, where the reference point coordinates (X _, Y, Z) of the tool T are calculated by the following equation. (X _, Y, Z) = (X _0, Y ₀ , Z ₀ ) + (V _x, V _y , V _Z ) · (I−
1) Here, V _x, V _y , and V _Z are step movement amounts in the X _, Y, and Z directions, respectively, and are determined by the feed speed commanded by the F code of the NC data analyzed in step 202. It

Next, the routine proceeds to step 208, where the reference point coordinates (X _, Y, Z) of the tool T calculated at step 206 are the end point positions (X _e, Y _e,
Z _e ) is determined. When the reference point coordinates (X _, Y _, Z) of the tool T reach the end point position (X _e, Y _e, Z _e ) in step 208, the process proceeds to step 210 and the reference point coordinates (X _, Y _{e of} the tool T, X _, Let (Y _, Z) be (X _e, Y _e, Z _e ). The reference point coordinates (X _, Y _, Z) of the tool T are still at the end point position.
_{(X e, Y e, Z} e) When not reached, the reference point coordinate of the tool T _{(X, Y,} Z) is the reference point coordinates calculated in step 206 _{(X, Y,} Z) as, Go to step 212.

In step 212, the tool shape of the RAM 30 is
Shape data of the tool T stored in advance in the shape data area 32
Read the coordinates of the reference point (X_,Y_,Z)
Image data and workpiece shape read in step 100
The image is combined with the image data and the ROM 20
The reference point coordinates (X_,Y _,
Z) data, F code storage area 33, and S code storage area
Area 34, M code storage area 35, and macro code area 37
Image data by combining with the contents stored in
To create. Then, the process proceeds to step 214,
The composite image data created in step 212.
Output to the memory 50.

Next, at step 216, for a fixed time, for example,
After waiting 0.5 seconds, the process proceeds to step 218. In step 218, it is determined whether or not the operation of the one block read in step 100 is completed. If the reference point coordinates (X _, Y _, Z) of the tool T have not reached the end point position (X _e, Y _e, Z _e ) in step 218 and one block is not operating, the interpolation point is determined in step 220. No.I
Is updated and the processing returns to step 206, and the same processing as described above is repeated. Then, when it is determined in step 218 that the operation of one block is completed, the process returns to step 124 in FIG. 2 to determine whether it is a data end. If it is a data end, the process ends, and if it is not a data end, the step ends. Returning to 100, a new block of NC data is read and the same processing as described above is executed.

Incidentally, the position calculation means is the above-mentioned step 20.
2-206, and the image creation means is accomplished at step 212. In this way, the trajectory of the tool T with respect to the workpiece W and the state of the specific command code commanded by the NC data during the execution of this operation are displayed on the CRT display device 7 of FIG.
It is possible to confirm the display state of 0 on the screen at the same time, and it is possible to debug the NC data as well as check the trajectory of the tool T with respect to the workpiece W, and to reliably check the NC data in a short time. You can

In the above embodiment, the NC data is read from the external storage device 40 block by block to display only the trajectory display of the tool T and the state of the specific command code. However, the NC data is read from the external storage device 40. All blocks of the CRT display device 70 are read in advance in the RAM 30, and the read all blocks together with the trajectory of the tool T with respect to the workpiece W and the state of the specific command code commanded by the NC data at the time of this operation execution. If it is displayed on the screen and the NC block currently being executed is indicated by an arrow as shown in FIG. 5, the visibility is further improved and the NC data can be debugged easily. In addition,
This NC data can be switched by CR even at the same time as the screen of FIG.
It may be displayed on the T display device 70.

[0019]

In the tool locus display device of the NC device of the present invention, a plurality of storage areas for storing the contents of the specific command described in the NC data, a data reading means for sequentially reading the NC data, and this data reading. Data detecting means for detecting a specific command of the NC data read by the means, specific command storing means for storing the specific command detected by the data detecting means in the storage area, and read by the data reading means Position calculation means for calculating the position of the tool by interpolating between the start point and the end point of the movement based on the calculated NC data, and image creating means for creating the image data of the tool calculated by the position calculation means. And image display means for displaying the image data of the tool for the workpiece created by the image creating means and the specific command stored in the plurality of storage areas. With which, as well as the check of the trajectory of the tool T relative to the workpiece W can debug the NC data, there is an advantage that it becomes possible to reliably perform the debugging of NC data as well as the check of the tool path of the tool.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a tool locus display device of an NC device according to a specific embodiment of the present invention.

FIG. 2 is a flowchart showing a processing procedure of a CPU used in the apparatus of the embodiment.

FIG. 3 is an explanatory diagram showing a display state on the screen of the CRT display device according to the embodiment.

FIG. 4 is a flowchart showing a processing procedure of a CPU used in the apparatus of the embodiment.

FIG. 5 is an explanatory diagram showing a display state of NC data according to the embodiment.

[Explanation of symbols]

 10-CPU 20-ROM 30-RAM 40-External storage device 50-Bitmap memory 60-CRT controller 70-CRT display device W-Workpiece T-Tool

Claims (1)

[Claims] 1. A tool locus display device of an NC device capable of displaying a locus of a tool based on NC data on a screen and simulating an interference state between the tool and a workpiece, and the specific command described in the NC data. , A plurality of storage areas for storing the contents of the data, a data reading means for sequentially reading the NC data, a data detecting means for detecting a specific command of the NC data read by the data reading means, and a data detecting means for detecting the data. A position for calculating the position of the tool by interpolating between a specific command storage unit for storing the specified command stored in the storage area and a start point and an end point of the movement based on the NC data read by the data reading unit. Computing means, image creating means for creating the image data of the tool calculated by the position computing means, and before creating by the image creating means Tool trajectory display device of the NC apparatus characterized by comprising an image data and image display means for displaying a specific command stored in said plurality of storage areas of the tool relative to the workpiece.