JPH01108603A - Nc data generating system by cad and cam devices - Google Patents

Abstract

PURPOSE:To obtain NC data for working in a short time by generating the NC data of a development from a working drawing by providing a flexural developing part which calculates the entire length of a graphic element and a graphic contour designated by a form input part and a path designation part by expanding the flexural form of them after inputting them, and converts them to linear forms. CONSTITUTION:A side plane form and the contour form of one side of a side plane are inputted by the form input part. Next, a mode enters a path input mode, and a side plane contour is designated by the path designation part. After that, by selecting a flexural development processing mode and inputting an offset value (half of plate thickness) and an offset side by a keyboard 3 and a mouse 4, the entire length of a plate after a bent plate being expanded is calculated automatically, then, the form itself is converted to a linear form. In such a way, a straight line in which the side plane is expanded can be obtained, and a remaining working form is attached again from the form input part, and after a developing form being inputted, processings for path input, the generation of the NC data, and output are performed in the above sequence, and two-dimensional NC data can be generated.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention provides a two-dimensional processing laser processing machine with a processing NC
The present invention relates to an NC data creation method using a two-dimensional machining CAD-CAM device for supplying data.

[Conventional technology]

Figure 4 shows the hardware configuration of a CAD-CAM device for two-dimensional machining. In the figure, (1) is a CRT, (
2) is an arithmetic unit, (3) is a keyboard, and (4) is a CRT.
Mouse as a coordinate input device for inputting the position above (
5) shows a tape puncher that outputs NC data, and (6) shows an NC tape as a processed data output medium.

With such a hardware configuration, for example, when creating NC data based on the machining shape shown in FIG. 6, it is done according to the flow shown in FIG. In other words, the software flow includes creating a development diagram (step SO),
Shape input section (step S1), route specification section (step S
2), an NC data creation section (step S6), and an output section (step S7).

Next, a specific method for creating the two-dimensional NC data will be explained. When creating NC data based on the machining shape diagram shown in Figure 6, first, while looking at the CRT (1), draw the points, lines, and circles that make up the machining shape using the keyboard (3) and mouse (4). Enter using The procedure is to first select the origin input mode, then specify an arbitrary position on the CRT screen (1) with the mouse (4) and set it as the origin (coordinates Xo, yo). Next, to input the machining start point,
Select point input mode and enter coordinate values (
Xo 5. Enter ``Yo''. Similarly, input four tree lines and four circles (corner radii). After inputting the graphical elements constituting the machining shape (steps So, Sl), press the mouse (4
) to designate the order of the machining path (step S2).

After that, the input data created by the above input operation is
NC data creation processing for converting into C data is performed (step S6), and then processed data is outputted by a tape puncher (5) or the like (step S7).

[Problems to be Solved by the Invention] Conventional CAD-CAM devices for two-dimensional machining create NC data in the manner described above. In order to create data for planar shape machining, a developed view, that is, Fig. 2 (
b), and it is necessary to create NC data for two-dimensional machining based on the developed diagram, which poses problems such as it takes a lot of time to create the NC data.

This invention was made in order to solve the above-mentioned problems.It eliminates the need for manually creating developed diagrams, and can create NC data for two-dimensional machining from bending diagrams in a short time.
The purpose is to obtain a data creation method.

[Means for solving problems]

An NC data creation method using a CAD-CAM device according to the present invention is a CAD-CAM device that creates NC data based on data input using a keyboard and coordinate input device and coordinate input on a CRT. After inputting figure elements and figure contours using the specification section, the bending section stretches the bent shape based on the selection of the bending unfolding processing mode, calculates the total length, and converts it into a linear shape. is created.

(Function) In order to create two-dimensional NC data developed from a bending drawing in this invention, the side shape of the bending drawing is input in advance, the bending development processing mode is entered, and the bending development section converts the curve into a single straight line. Convert.

(Example〕 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a CA of the present invention corresponding to the conventional example shown in FIG.
This is a flow diagram explaining the NC data creation method by the D-CAM device, in which Sl is a shape input section, S2 is a route specification section, and S
Reference numeral 3 indicates a bending development processing judgment section, and S4 indicates a bending development section. This bending development section (step S4) is operated after inputting graphic elements and graphic contours by the shape input section (step Sl) and the route specification section (step 52). , select the bend unfolding processing mode (
Based on step S3), the bent shape is stretched, the total length is calculated, and the bent shape is converted into a straight shape.

Note that when stretching the bent shape into a straight line, the offset value to the bending center line must be input from the keyboard (3), and the direction in which the offset will be applied must be specified using the mouse (4), which serves as a coordinate input device. ing.

Further, S5 is an all-shape input end determination section, S6 is an NC data creation section, and S7 is an N'C data output section. Here, this NC data creation method is based on the normal CAD shown in FIG.
- A CAM device is used, but the CAD/CAM device naturally has a CAD function for drawing based on input of points, lines, and circles.

Next, examples will be described in detail. Here, the process of obtaining the developed processing diagram shown in FIG. 3 will be explained based on FIG. 2. First, the shape of the side surface and the contour shape of one side surface are inputted using the shape input section (step Sl) as shown in FIG. 6(a). next,
Entering the route input mode, the route specifying section (step S2) specifies the side profile as shown in FIG. 2(b). After that, select the bending development processing mode (step S3), enter the offset value (half the plate thickness) and the offset side using the keyboard (step S3).
) with the mouse (4), the total length of the bent board after being stretched ((C) in the same figure) will be automatically calculated.
The shape itself is converted into a straight line as shown in FIG. 4(d).

As a result, a straight line with stretched sides was obtained, so the remaining machining shape was added again from the shape input section,
After inputting the developed shape (FIG. 6(e)), the processing of route input, NC data creation, and output is performed in the order of route input, NC data creation, and output, as in the conventional method, to create two-dimensional NC data.

In the above embodiment, the two-dimensional NC data is used for laser processing (cutting), but the same effect can be obtained as an NC data creation device for marking and wire-cut electrical discharge machines.

〔Effect of the invention〕

As described above, according to the present invention, NC data for machining can be obtained in a short time without manually creating a development diagram, and there is an effect of preventing calculation errors caused by manual calculation.

[Brief explanation of the drawing]

Fig. 1 is a procedure diagram for creating processing drawings when using the bending development function of this invention, and Figs. Figures 3(a) to 3(e) are explanatory diagrams of the outline drawings of the parts that have been processed, and are used to explain the method of this invention. Figure 3(a) shows the contour shape of one side before using the bending and unfolding function. Graphical elements for creating (
(b) is an outline shape on one side. After inputting this shape, the bending development process begins, specifying the side to be offset with the mouse, and setting the offset value (generally half the plate thickness). ) is entered from the keyboard. Figure (C) is a line stretched by the bending and unfolding process, and each point indicates the connection point with each previous line and each circular arc. Figure (d) is an example of inputting the remaining lines. The figure where the lines were input using CAD and the figure (e) show the completed processing drawing. Figure 4 shows CAD-CAM
FIG. 5 is a diagram showing the configuration of the hardware of the apparatus, FIG. 5 is a conventional process drawing procedure diagram, and FIG. 6 is an explanatory diagram showing an example of a part diagram without bending. In the figure, (1) is a CRT, (2) is a calculation device, (3) is a keyboard, (4) is a mouse (coordinate input device), (5) is a tape puncher for outputting machining data, and (6) is machining data. Paper tape is an output medium, Sl is a shape input section, Sl is a route designation section, S3 is a bending development judgment section, S4 is a bending development section,
S5 is the entire shape input judgment section, S6 is the NC data creation section, S
7 is the output section. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (3)

[Claims] (1) In a CAD/CAM device that creates NC data based on data input using a keyboard and coordinate input device and coordinate input on a CRT, after inputting graphic elements and graphic contours by the shape input section and route specification section, C, characterized in that it includes a bending development section that stretches the bent shape based on the selection of the bending development processing mode, calculates the total length, and converts it into a straight shape, and creates NC data of the development view from the processing drawing.
NC data creation method using AD/CAM equipment. (2) The above-mentioned CAD/CAM device has a CAD function for drawing based on input of points, lines, and circles.
NC data creation method using the CAD/CAM device described in section. (3) When the bending development section stretches the bent shape into a straight line, an offset value to the bending center line is inputted from a keyboard, and a direction in which the offset is applied is specified by a coordinate input device. NC data creation method using the CAD/CAM device described in Section 2.