JPH05224727A - Automatic programming device for laser machining nc program - Google Patents

Abstract

PURPOSE:To accurately produce an NC program with high efficiency cutting-out for multi-piece cutting-out laser machining applying a crosspiece width sharing multi-piece cutting-out method without requiring any troublesome job nor a long time. CONSTITUTION:An automatic programming device is used for a laser machining NC program to produce a multi-piece cutting-out laser machining NC program which can take out plural pieces of products from a single sheet of material. A CAM part 11 receives the graphic data showing the shapes of the multi-piece cutting-out laser machining products and produces automatically the laser machining tool locus data from the input graphic data. A crosspiece width shared multi-piece cutting-out arithmetic part 13 receives the laser machining tool locks data from the part 11, sets a laser cutting path which are shared by the products adjacent to each other at least at a single side of each product, and then sets a cutting start point of each laser cutting path at an outside part distant from the material. Then an NC data converting post-processor 15 converts the multi-piece cutting-out data into the NC data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic programming device for an NC program for laser processing, and more particularly to an automatic programming device for creating an NC program for multi-cavity laser processing for cutting a plurality of products by cutting from a single material. It is about.

[0002]

2. Description of the Related Art A laser cutting process for cutting a product having a predetermined shape from a material by cutting with a laser processing machine includes a multi-cavity laser process for cutting a plurality of products from one material.

When this multi-cavity laser processing is performed by an NC laser processing machine, a laser cutting path for cutting out each product is based on graphic data showing the product shape of the multi-cavity laser processing created by CAD or the like. It is necessary to create laser cutting path data for setting.

In setting the laser cutting path in the multi-cavity laser processing, generally, as shown in FIG. 5, a cross width W is provided between the products G so that the products G are mutually separated. The piercing P (drilling) can be set for each cutting of each product G because the cutting of each product G is completed independently for each product G. Has been done.

[0005]

In the laser cutting path setting as described above, since the crosspiece width W, which is the residual material, exists between the products G, the yield is poor, and piercing is required for each product G. Therefore, there is a disadvantage that the processing time becomes long. Particularly, the piercing process takes 10 to 20 seconds at a time, and the longer the plate thickness of the material is, the longer the time is required, which causes a large reduction in the efficiency of the laser cutting process.

As a new method of multi-cavity laser processing, products adjacent to each other have a laser cutting path shared on at least one side, and the cutting start point of each laser cutting path is separated from the material on the outer side. It is considered that the rail width is shared and many pieces are set (see FIGS. 2 to 4).

[0007] The multi-cavity laser processing by sharing the cross-width can reduce the processing time and improve the material yield as compared with the conventional multi-cavity laser processing as described above. The NC program for performing the multi-cavity laser processing by the multi-cavity must set the laser cutting path by the manual programming, and it takes a long time and labor to create the NC program.

The present invention has been made by paying attention to the above-mentioned problems, and does not require a troublesome work and a lot of time for the NC program of the multi-cavity laser processing by the multi-cavity sharing the cross width. An object of the present invention is to provide an automatic programming device for an NC program for laser processing, which can be efficiently and accurately created.

[0009]

According to the present invention, the above-described object is to provide an NC program for laser processing which creates an NC program for multi-cavity laser processing for cutting out a plurality of products by cutting from one material. In the automatic programming device, a laser processing tool locus data creation unit for inputting graphic data indicating a product shape of multi-cavity laser processing and automatically creating laser processing tool locus data from the graphic data, and the laser processing tool The laser processing tool trajectory data is given from the trajectory data creation unit, and the laser cutting paths where adjacent products share each other on at least one side are set, and the cutting start point of each laser cutting path is located outside the material. From the multi-cavity sharing multi-cavity calculation unit that automatically creates multi-cavity data to be set in the section, The present invention is achieved by an automatic programming device for an NC program for laser processing, characterized in that it has an NC data conversion post-processor which is provided with data for several pieces of production and converts the data for multiple pieces of production into NC data. ..

[0010]

According to the above-mentioned structure, the NC program for multi-cavity laser processing by multi-cavity sharing of cross-widths sets a laser cutting path in which adjacent products share each other on at least one side, and It is automatically created by a patterned procedure in which the cutting start point of the laser cutting path is set to an outer side portion apart from the material.

[0011]

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows an embodiment of an automatic programming device for an NC program for laser processing according to the present invention. The automatic programming device includes an automatic programming device main body 1, a display device 3 such as a CRT connected to the automatic programming device main body 1, an input device 5 such as a keyboard and a mouse connected to the automatic programming device main body 1, an automatic programming device. An output device 7 such as a paper tape puncher, an optical disk driver, an ID card reader / writer, and a floppy magnetic disk driver connected to the main body 1.
It is composed of and.

The automatic programming device main body 1 creates graphic data C showing the product shape of the multi-cavity laser processing.
C as a laser processing tool locus data creation unit that is given CAD data (graphic data) a from the AD unit 9 and the CAD unit 9 and automatically creates tool locus data b based on this
The tool locus data b is given from the AM unit 11 and the CAM unit 11, and based on this, a laser cutting path in which adjacent products are shared by at least one side is set,
In addition, the beam width sharing multi-cavity calculation unit 13 and the beam width sharing multi-cavity calculation unit 13 that automatically create the multi-cavity collection data c that sets the cutting start point of each laser cutting path to the outer side away from the material. It has an NC data conversion post-processor 15 which is supplied with more multi-collection data c and converts this multi-collection data c into NC data d.

2 to 4 each show an actual example of a laser cutting path and a laser cutting order for a plurality of beam width sharing multiple cuttings by an NC program created by an automatic NC program for laser processing according to the present invention. ..
2 to 4, (A) shows a product shape, and (B) shows a laser cutting path and a laser cutting order.

FIG. 2 shows an example in which each of the products G1 to G6 shares the upper, lower, left and right four sides. In this example, first, the upper side of the material is cut by the laser cutting path indicated by the reference numeral. Then, the left side of the material is cut by the laser cutting path indicated by the reference numeral, and then the cutting by the laser cutting path indicated by the reference numeral and the laser cutting path indicated by the reference numeral are sequentially performed. Cut off product G1. Thereafter, for each of the products G2 to G6, the same cutting as the cutting by the laser cutting path indicated by the reference numeral and the cutting by the laser cutting path indicated by the reference numeral are repeated, and the products G2 through G6 are cut off in order. The start point of each laser cutting path is set to the outer side portion apart from the material at the start of cutting by each laser cutting path, as indicated by the symbol S. Therefore, it is not necessary to perform piercing at the start of cutting by each laser cutting path.

FIG. 3 shows an example in which each of the products G1 to G6 shares two right and left sides. In this example, first, the upper side of the material is cut by the laser cutting path indicated by the reference numeral. Next, the left side of the material is cut by the laser cutting path indicated by the reference numeral, and thereafter, cutting is performed by the laser cutting path indicated by the reference numeral to cut off the product G1. Next, for each of the products G2 and G3, the same cutting as the laser cutting path indicated by the reference numeral is repeated to cut off the products G2 and G3 in order.

Next, the upper part of the lower product is cut by the laser cutting path indicated by the reference numeral. After this, the same cutting as the laser cutting path indicated by the reference numeral again is repeated for G4 to G6 to obtain the product G4.
Cut off G6 in order. In this case as well, the start point of each laser cutting path is set to the outer side portion apart from the material at the start of cutting by each laser cutting path, as indicated by the symbol S. Therefore, also in this case, it is not necessary to perform piercing at the start of cutting by each laser cutting path.

FIG. 4 shows an example in which the respective products G1 to G6 share the upper and lower two sides. In this example, first, the upper side of the material is cut by the laser cutting path indicated by the reference numeral. Then, the product G1 is cut off by cutting along the laser cutting path indicated by the reference numeral. After that, for each of the products G2 to G6, the same cutting as the laser cutting path indicated by the reference numeral is repeated,
Cut off the products G2 to G6 in order. Also in this case, the starting point of each laser cutting path is as shown by the symbol S,
It is set on the outer side portion apart from the material at the start of cutting by each laser cutting path. Therefore, also in this case, it is not necessary to perform piercing at the start of cutting by each laser cutting path.

As described above, in the multi-cavity laser processing by the multi-cavity sharing multi-cavity, basically, the upper and left edges of the material are first cut, and then the products are cut off one by one. .. Therefore, as shown in FIGS.
Due to the difference in the edges shared by the products, the cutting order will be different.

The laser cutting path and the laser cutting sequence in the multi-cavity laser processing shown in FIGS. Since there are various laser cutting paths and laser cutting orders for multi-cavity laser processing by cutting, the laser cutting paths and laser cutting orders may be changed to other forms accordingly.

In the above, the present invention has been described in detail with respect to a specific embodiment, but the present invention is not limited to this, and various embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art.

[0022]

As can be understood from the above description, according to the automatic programming system for NC programs for laser machining according to the present invention, NC programs for multi-cavity laser machining by multi-cavity sharing of beam widths are adjacent to each other. Automatically created by a patterned procedure in which the product sets a laser cutting path that is shared by at least one side and sets the cutting start point of each laser cutting path to the outer side away from the material. Therefore, the NC program for multi-cavity laser machining by multi-cavity sharing of cross rails can be efficiently and accurately created without requiring troublesome work and much time. The creation time of will be greatly shortened compared to the past.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of an automatic programming device for an NC program for laser processing according to the present invention.

FIG. 2 (A) shows an example of a product shape for multiple production,
FIG. 6B is a plan view showing an example of a laser cutting path and a laser cutting order for a plurality of beam width sharing multiple shots by an NC program created by an automatic NC program for laser machining according to the present invention.

FIG. 3 (A) is another example of the product shape for multiple production,
FIG. 6B is a plan view showing another example of a laser cutting path and a laser cutting order for multiple beam width sharing by an NC program created by an automatic NC program for laser machining according to the present invention.

FIG. 4 (A) is another example of a product shape for multiple production,
FIG. 6B is a plan view showing another example of a laser cutting path and a laser cutting order for multiple beam width sharing by an NC program created by an automatic NC program for laser machining according to the present invention.

FIG. 5 is a plan view showing a general example of a conventional multi-cavity production.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Automatic programming device main body 3 Display device 5 Input device 7 Output device 9 CAD unit 11 CAM unit 13 Cross-width common multi-cavity calculation unit 15 NC data conversion post processor

Claims (1)

[Claims] 1. An automatic programming device for an NC program for laser processing, which creates an NC program for multi-cavity laser processing that cuts out a plurality of products by cutting from one material, and a product shape for multi-cavity laser processing. Is input, and laser processing tool trajectory data creation unit that automatically creates laser processing tool trajectory data from the graphics data, and laser processing tool trajectory data is given from the laser processing tool trajectory data creation unit, and are adjacent to each other. Set the laser cutting path that the products to be shared with each other on at least one side,
In addition, a beam width sharing multi-cavity calculation unit that automatically creates multi-cavity data for setting the cutting start point of each laser cutting path to an outer side portion apart from the material, and a number larger than the beam width common multi-cavity calculation unit An automatic programming device for an NC program for laser processing, comprising: an NC data conversion post-processor, which is provided with data for individual production and converts the data for multiple production into NC data.