JPS63184805A - Nc data generating system by plural shape data expression - Google Patents

Abstract

PURPOSE:To shorten the manhour for a change of a shape data, which follows up a partial shape change of a work, by expressing a work shape as a combination of plural independent shape element data. CONSTITUTION:Shape element data A, B which become a basis of each shape are generated. By combining the shape element data A, B and a shape element defined already, etc., the shape element data are combined so as to become a desired work shape C. Working information data such as a working method to a designated work (a shape element data or a shape element combined data), a cutting condition, etc. are generated. From the working information data and each shape element data in the shape element combined data, the surface required for making a tool path (NC data) is selected, and an object surface data is generated. From the working information data and the object surface data, a working NC data is generated.

Description

Detailed Description of the Invention (Technical Field of the Invention) The present invention provides an apparatus for creating NC data necessary for processing using a numerically controlled (NC) machine tool. NC to express as
Regarding data creation method.

(Technical background of the invention and its problems) In order to machine a desired workpiece shape using an NC machine tool, it is necessary to create a series of tool paths such as approach, machining, and escape. Automatically generate this tool pathN
In the C data creation device, the conventional method of expressing one workpiece shape (regardless of whether machining information (each machining method, cutting conditions, etc.) is related) is expressed by only one shape data.

FIG. 5 shows a block diagram of a conventional shape representation type NC data creation device, in which a keyboard 101 or a tablet 10 is used.
The shape data and machining information data of the workpiece are transmitted from the second-class human-powered device 100 to the shape data creation section 1 and the machining information setting section 2.
and stored in the shape data memory 3 and processing information data memory 4, respectively. Then, via the shape data output section 5 and the machining information data output section 6, the NC data is created in the NC data creation section 7 and stored in the NC data memory 8, and then sent to the CRT 2 via the NC data output section 9.
01. The data is outputted to an output device 200 such as a floppy disk 2021 and a paper tape 203.

That is, the designated machining information data and one piece of shape data representing the entire workpiece are processed and filled.

For example, to process the shape shown in Figure 6(C), we need to create a rectangular parallelepiped as shown in Figure 6(Δ) and a cylinder with the lower part below the broken line removed as shown in Figure 6(l). Combine with 1
It has a three-dimensional shape.

In addition, when changing the shape shown in Fig. 7 (^) to the shape shown in Fig. 7 (D), first change the shape of the column shown in Fig. 7 (C) by removing the upper cylindrical part of Fig. 7 (A). A rectangular parallelepiped and a cylinder with the lower part cut off from the broken line part as shown in FIG. 6(B) are combined to form X three-dimensional shapes.

However, the above-mentioned method has the disadvantage that even if the shape of the workpiece is only partially changed, the shape data must be partially modified or all of it must be re-created, which requires a large amount of man-hours and effort. there were.

(Objective of the Invention) The present invention was made in view of the above-mentioned circumstances, and an object of the present invention is to easily express the shape of a workpiece as a combination (sum) of several independent shape element data. An object of the present invention is to provide an NC data creation method using plural shape data expressions that can be changed and corrected.

(Summary of the Invention) The present invention relates to an NC data creation method in which NC data for an NC machine tool is composed of multiple shape data representations. Shape element combination data of the workpiece is created from the shape element combination data, and machining information data of the workpiece is created.

By displaying the shape element data and the shape element combination data and giving instructions while checking the contents, a target surface is created, and N is created from this target surface data and the processing information data.
C data is created and displayed.

(Embodiment of the Invention) FIG. 1 is a block diagram showing an embodiment of a device that implements the NC data creation method according to the present invention.

Input devices such as a keyboard 101 and a tablet 102
According to instructions from OO, shape element data is created by the shape element data creation unit 51, shape element combination data is created by the shape element combination data creation unit 54, and machining information data is created by the machining information setting unit 2. memory 52
, are stored in the shape element combination data memory 55 and the processing information data memory 4. Target surface data for machining is created from the shape element data, shape element combination data, and machining information data in the target surface data creation section 57 and stored in the target surface data memory 58, and a tool path is determined from the target surface data and machining information data. Created by NC data creation section 7 and NC
0 or more shape element data stored in the data memory 8;
Shape element combination data, machining information data, and NC data are each sent to shape element data output section 53. Shape element combination data output unit 56. Processing information data output unit 6 and NC
The CRT 201. Output device 20 such as floppy disk 2029 paper tape 203
Output to 0.

FIG. 2 is a flowchart explaining the present invention in detail. When an operator or the like inputs data SA necessary for creating NC data for machining a desired workpiece from an input device 100 such as a keyboard 101 or a tablet 102, this Based on the data, the shape element data creation unit 51 creates shape element data that will become the basic elements of the desired workpiece shape while being fed back to the operator etc. through the output device 200 such as the Cll7201 (step Sl). It is stored in memory 52.

Further, when an operator or the like inputs a command SO necessary for a desired workpiece shape from the input device 100, each shape element data SD stored in the shape element data memory 52 and the shape element combination data memory 55 are stored in advance based on this command. The stored shape element combination data SE is read into the shape element combination data creation section 54, illustrated by an output device 200 such as CllT2O1, and fed back to an operator or the like. Then, the operator etc. inputs the input device 1.
When a combination operation such as coordinate conversion, enlargement, reduction copying, etc. is instructed from 00 to the shape element data or shape element combination data, the shape element data or shape element combination data is set at a predetermined position of the desired workpiece shape, and the CRT 201
It is illustrated by an output device 200 such as and fed back to an operator or the like. This operation content and the shape element data name or shape element combination data name are stored in the shape element combination data memory 55. The above process is repeated, and the finally created shape element combination data SF (step 52) is stored in the shape element combination data memory 55 according to an instruction from an operator or the like.

Furthermore, each data (processing method, cutting conditions, workpiece to be processed (shape element data or shape element combination data) name) necessary for creating NC data is provided by an instruction SC from the human power device 100 such as an operator.

(tool designation parameters, etc.) are created by the machining information setting section 2 (step S3) and stored in the machining information data memory 4.

Next, the target surface data creation unit 57 generates designated machining information data SF.
The machining area is determined from the designated shape element data SG or each shape element data in the designated shape element combination data S11. The highest surface at each point within the processing area is selected and registered to create target surface data (step S4) and stored in the target surface data memory 58. Further, the specified machining information data SJ from the machining information data memory 4 and the target surface data 5K from the target surface data memory 58 are read into the NC data creation section 7, and NC data for machining the designated workpiece is created (step S5). The NC data is stored in the NC data memory 8 under the name in the processing information data.

Then, the designated shape element data in the shape element data memory 52 is sent to the output device 20 via the shape element data output section 53.
0, and the specified shape element combination data in the shape element combination data memory 55 and data obtained by performing a combination operation on each shape element data registered in the data are outputted to the shape element combination data output section 56. It is outputted to the output device 200 via. Further, specified machining information data in the machining information data memory 4 is outputted to the output device 200 via the machining information data output section 6, and further outputted to the NC data memory 8.
The NC data within is output to the output device 200 via the NC data output section 9, and the operation is completed.

Here, when the method of the present invention is applied to the conventional example (see Fig. 6) described earlier, the explanation will be given with reference to Fig. 3 (see Fig. 6).
To process the shape shown in C), all you need to do is place the rectangular parallelepiped shown in (A) and the cylinder shown in (B) in their respective predetermined positions, that is, each is an independent element. It is being processed as.

Furthermore, when the method of the present invention is applied to another conventional example (see Fig. 7), the shape shown in Fig. 4 (A) can be changed to the shape shown in Fig. 4 (B). When changing to , the elements of the cylindrical part (including the dotted line part) can be moved and rearranged, and each element is processed as an independent element.

(Effects of the Invention) As described above, NC by expressing multiple shape data of the present invention
According to the data creation method, the shape of the workpiece can be expressed as a combination (sum) of multiple independent shape element data, which can significantly reduce the number of man-hours required to change the shape data when changing the shape of a part of the workpiece. Moreover, since common shape element data and their combination data can be used for similar workpiece shapes, the capacity of the memory device for shape data can be reduced. .

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of an apparatus for realizing the NC data creation method of the present invention, FIG. 2 is a flowchart explaining the NC data creation method of the invention, and FIGS. 3 (^) to (
C) and Figure 4 (8). (B) is a diagram explaining an example to which the NC data creation method of the present invention is applied, FIG. 5 is a block diagram showing an example of a device used in the conventional NC data creation method, and FIGS. 6 (^) to (C)
and FIGS. 7(A) to 7(D) are diagrams illustrating an example to which the conventional NC data creation method is applied. 2... Processing information setting section, 7...-NC data creation section,
51... Shape element data creation section, 54... Shape element combination data creation section, 100... Human power device, 200.
...Output device. $2 figure

Claims (1)

[Claims] In the method of creating NC data for NC machine tools,
Create shape element data of the workpiece, create shape element combination data of the workpiece from this shape element data and pre-stored shape element combination data, create processing information data of the workpiece, and create processing information data of the workpiece. , create target surface data by displaying the shape element data and the shape element combination data and instructing while checking the contents, and create and display NC data from this target surface data and the machining information data. An NC data creation method using multiple shape data representations.