JPH0926810A - Numerical controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To designate both machining method and machining position by simultaneously displaying the three-dimensional material shape, the machining surface and the machining shape on a display screen. SOLUTION: A material shape generation means 2 generates the material shape display data from the material shape data 1. A machining surface generation means 4 generates the machining surface display data from the NC data 3. A machining shape generation means 5 generates the machining shape display data from the data 3. A display data synthesizing means 6 synthesizes 'together the material shape display data, the machining surface display data and the machining shape display into the synthetic display data. A display control means 7 converts the synthetic display data into the display signals. Then a display device 32 shows the display signals. In such a constitution, the three-dimensional material shape, the machining surface and the machining shape are simultaneously displayed. Then both machining method and machining position can be designated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a numerical controller, and more particularly to a numerical controller having a three-dimensional machining simulation function.

[0002]

2. Description of the Related Art In order to process complicated shapes, ordinary X
An NC lathe having a C axis and a Y axis in addition to the axis and the Z axis is used. In these NC lathes, the machining shape cannot be clearly displayed only by displaying the machining state two-dimensionally. In order to solve this, a three-dimensional processing simulation is adopted.

[0003]

However, such a 3
In the dimensional machining simulation, since only the tool locus is displayed, the accurate machining shape cannot be recognized and it is difficult to check the machining program.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a numerical control device having a three-dimensional machining simulation function capable of recognizing an accurate machining shape.

[0005]

According to the present invention, in order to solve the above-mentioned problems, in a numerical controller having a three-dimensional machining simulation function, a material shape generating means for generating material shape display data from material shape data, and NC. Processing surface generation means for generating processing surface display data from data, processing shape generation means for generating processing shape display data from the NC data, the material shape display data, the processing surface display data and the processing shape display data. A numerical controller provided with display data synthesizing means for synthesizing to obtain synthesized display data, display control means for converting the synthesized display data into a display signal, and a display device for displaying the display signal. To be done.

[0006]

[Function] The material shape generation means generates material shape display data from the material shape data. The machining surface generation means generates machining surface display data from NC data. The machining shape generation means generates machining shape display data from NC data. The display data synthesizing unit synthesizes the material shape display data, the machining surface display data, and the machining shape display data to generate synthetic display data. The display control means converts the combined display data into a display signal. The display device displays the display signal.

[0007]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a conceptual diagram of the present invention. A numerical control device having a three-dimensional machining simulation function includes a material shape data 1, a material shape generating means 2, NC data 3,
The processing surface generating unit 4, the processing shape generating unit 5, the display data synthesizing unit 6, the display control unit 7, and the display device 32 are included.

The material shape data 1 is data such as material length and material diameter. Material shape generation means 2 uses material shape data 1
Material shape display data is generated from. The NC data 3 is data created by automatically programming the product shape dimension values, processing conditions and the like according to interactive input. For example, processing conditions such as end surface processing, cylindrical side surface processing, and side surface processing are set as NC data by a G code for each processing type. The setting of this G code will be described later. The machining surface generation means 4 generates machining surface display data from the NC data 3. The machined surface refers to a surface parallel to the end surface at the Z-axis cutting end point, for example, when cutting in the Z-axis direction by end surface processing. The machining shape generation means 5 generates machining shape display data from the NC data 3. The machined shape is a portion that is cut by a tool that follows axial movement. The display data synthesizing unit 6 synthesizes the material shape display data, the machining surface display data, and the machining shape display data to generate synthetic display data. After that, the display control means 7 converts the combined display data into a display signal and displays the display signal on the display device 32.

FIG. 2 is a flowchart showing the processing procedure of the three-dimensional machining simulation function of the numerical controller according to the present invention. [S1] The material shape data such as the material length and the material diameter input in the interactive form are read. [S2] Material shape display data is generated based on the material shape data. [S3] NC data which is automatically programmed according to the interactive input is read. [S4] After reading the NC data, if there is a G10 code, go to step 5, otherwise go to step 8. Here, the G10 code is a G code set for each processing type. For example, "G10 P1" is the end surface processing, "G10 P1"
"P2" is set as cylindrical side surface processing, and "G10 P3" is set as side surface processing, and the presence of this G10 code makes it possible to determine whether the processing requires the C axis and the Y axis. [S5] The processing type set by the G10 code is determined. [S6] If the cutting amount of the shaft corresponding to the machining surface is designated, go to step 7, and if not, go to step 8. [S7] Processing surface display data is generated. [S8] Machining shape display data is generated. [S9] The material shape display data, the processed surface display data, and the processed shape display data are combined to generate combined display data. If the machining surface display data is not generated, the material shape display data and the machining shape display data are combined to generate combined display data. [S10] The composite display data is converted into a display signal.

Next, an example of creating a display screen will be described.
First, FIG. 3 shows the material shape. The material 10 has a round bar shape with a radius R and a length L. Starting from the shape of the material 10, three examples of end face machining, cylindrical side face machining, and side face machining will be shown.

FIG. 4 is a view showing an example of a display screen when the material 10 is end-face processed. (A) is material 10 and processing surface S
FIG. 3B is a diagram in which U1 is combined, and FIG. 6B is a diagram in which the material 10, the processing surface SU1 and the processing shape 11 are combined. (A)
In, the difference in the Z-axis coordinate value between the point P1 on the end surface SU2 and the cutting end point P2 when the material 10 is cut in the Z-axis direction,
That is, when the cutting depth is designated as E1, the machining surface SU1 passes through the cutting end point P2 and is parallel to the end surface SU2, and is displayed as shown in (A). Further, in (B), the tool trajectories following the movement of the X axis, Y axis, and C axis are designated as points P2, P3, and P4 on the machining surface SU1, and the depth of cut is designated as E1. In this case, the part to be cut becomes a three-dimensional part formed by the fan-shaped P2P3P4 whose height is perpendicular to the YZ plane and the height E1.
Becomes Therefore, the final display screen is created as shown in (B).

FIG. 5 is a view showing an example of a display screen when the material 10 is subjected to cylindrical side surface processing by moving the C axis. (A)
Is a diagram in which the material 10 and the processed surface SU11 are combined,
(B) is a diagram in which the material 10, the processed surface SU11, and the processed shape 12 are combined. In (A), the cylindrical side surface SU1
When the difference in the X-axis coordinate value between the point P11 on 2 and the cutting end point P12 when the material 10 is cut in the X-axis direction, that is, the cutting amount is designated as E2, the machining surface SU11 is cut. End point P
It becomes a cylindrical side surface passing through 12, and is displayed as (A).
Further, in (B), the tool locus according to the movement of each of the Z axis and the C axis is the points P12 and P1 on the machining surface SU11.
When 3, P15, P16 are designated and the depth of cut is designated as E2, the portion to be cut is the three-dimensional portion formed by the bottom surface P11P12P13P14 and the height D1 orthogonal to the YZ plane, and this is the machining shape. Twelve. Therefore, the final display screen is created as shown in (B).

FIG. 6 is a view showing an example of a display screen when the side surface processing of the material 10 is carried out by moving the Y axis. (A) is a diagram in which the material 10 and the processed surface SU21 are combined, and (B)
FIG. 4 is a diagram in which the material 10, the processed surface SU21, and the processed shape 13 are combined. In (A), when the difference between the X-axis coordinate values of the point P21 on the cylindrical side surface SU22 and the cutting end point P22 when the material 10 is cut in the X-axis direction, that is, the cutting amount is designated as E3. The processed surface SU21 becomes a plane passing through the cutting end point P22 and is displayed as shown in (A). Further, in (B), the tool locus according to the movement of each of the Z axis and the Y axis is points P22, P23, P2 on the machining surface SU21.
5, P26 is specified and the depth of cut is specified as E3, the part to be cut is the bottom surface P21 which is orthogonal to the YZ plane.
It becomes a three-dimensional shape portion formed from P22P23P24 and the height D2, and this is the processed shape 13. Therefore, the final display screen is created as shown in (B).

By displaying the screen in which the three-dimensional material shape, the machined surface and the machined shape are combined in this way, the tool position indicated by the tool path and the machining method can be accurately grasped.

FIG. 7 is a block diagram showing a hardware configuration of a numerical controller (CNC) to which the present invention is applied. The processor (CPU) 21 controls the basic functions of the numerical controller. A read-only storage device (ROM) 22 stores a system control program. The random access memory (RAM) 23 stores temporary data such as input / output signals. The non-volatile memory 24 stores various data such as machining programs that should be retained even after the power is turned off. The graphic control circuit 3 is provided in the panel 30.
1, a display device 32, a keyboard 33, and a software key 34 are provided. The graphic control circuit 31 is C
The image information sent from the PU 21 is converted into a displayable signal and output to the display device 32. As the display device 32, a CRT, a liquid crystal display or the like is used. The keyboard 33 includes operation keys used for data input, function keys, and the like. The meaning of the software key 34 changes according to the operator's screen selection, and the necessary keys are displayed on that screen. The axis control circuit 25 receives an instruction such as an interpolation pulse from the CPU 21 and outputs an axis movement instruction to the servo amplifier 26. The servo amplifier 26 drives the servo motor in the machine tool 29 in response to this movement command.
Programmable machine controller (PMC) 27
Controls the machine tool 29 with a sequence program formed in a ladder format. These components are the bus 28
Are connected to each other by

In the above description, NC lathe processing is used as an example, but the present invention is also applied to a numerical control device for a machining center for performing various processing such as boring, drilling and thread cutting.

[0017]

As described above, in the present invention, the three-dimensional material shape, the machined surface and the machined shape are simultaneously displayed on the display screen, so that the machined shape can be accurately recognized and the machining program can be checked. Will be easier.

[Brief description of drawings]

FIG. 1 is a principle block diagram of a numerical controller according to the present invention.

FIG. 2 is a flowchart showing a processing procedure of a three-dimensional machining simulation function of the numerical controller according to the present invention.

FIG. 3 is a diagram showing a material shape.

FIG. 4 is a diagram showing an example of a display screen when an end face is processed.

FIG. 5 is a diagram showing an example of a display screen when a cylindrical side surface is processed.

FIG. 6 is a diagram showing an example of a display screen when side processing is performed.

FIG. 7 is a block diagram of hardware of a numerical controller (CNC) to which the present invention is applied.

[Explanation of symbols]

 1 Material Shape Data 2 Material Shape Generating Means 3 NC Data 4 Machining Surface Generating Means 5 Machining Shape Generating Means 6 Display Data Synthesizing Means 7 Display Control Means 32 Display Devices

Claims (4)

[Claims] 1. A numerical control device having a three-dimensional machining simulation function, comprising: a material shape generation means for generating material shape display data from material shape data; and a machining surface generation means for generating machining surface display data from NC data. Machining shape generation means for generating machining shape display data from the NC data; display data synthesizing means for synthesizing the material shape display data, the machining surface display data and the machining shape display data to obtain synthetic display data; A numerical control device comprising: a display control unit that converts combined display data into a display signal; and a display device that displays the display signal. 2. The machined surface is an end surface, and the machined shape is a portion that is cut by a tool locus according to movement in the X-axis, Y-axis, and C-axis directions. Numerical control device. 3. The numerical control according to claim 1, wherein the machined surface is a cylindrical side surface, and the machined shape is a portion which is cut by a tool locus following movement in the Z-axis and C-axis directions. apparatus. 4. The numerical controller according to claim 1, wherein the machined surface is a flat surface, and the machined shape is a portion that is cut by a tool locus according to movement in the Z-axis and Y-axis directions. .