Laser beam machine

Abstract

A sharp corner judgment means judges as to whether a corner of cut shape in a workpiece is a sharp corner is not on the basis of a machining program. When the corner is regarded as the sharp corner, an additional locus producing means for producing sharp corner produces an additional locus for producing sharp corner when machining on the corner regarded as the sharp corner, and a sharp corner machining execution means executes machining on the corner on the basis of the produced additional locus for producing sharp corner. Then, the additional locus for producing sharp corner can be automatically produced for the sharp corner so as to execute machining.

Description

technical field [0001] The present invention relates to a laser processing machine capable of cutting a plate-shaped workpiece. Background technique [0002] Figure 7 It is a diagram showing an example of a state of cutting near a corner portion by a conventional machining method, (a) shows a loop R of a movement path, and (b) shows a part of an example of a machining program. [0003] In the past, when using a laser processing machine to cut a sharp angle formed by intersecting straight cutting paths, for example, such as Figure 7 As shown in (a), when the sharp angle formed by the intersection of the straight line cutting path L1 and L5 (solid line) is cut at the position P1 (x coordinate is 0, y coordinate is 0), along the same figure (a) After the cut-off path L1 is cut in the direction of the arrow, the cut-off path L5 is not cut off immediately, but along the loop R (LR) indicated by the dotted line in the same figure (a), according to the position P1, P100 (x coordi...

AI Technical Summary

Problems solved by technology

[0007] However, in the above-mentioned processing method, since the nozzle needs to be moved along the movement path formed by the above-mentioned three straight lines → circular arc → straight line in each processing of the sharp angle, there is a need to feed the nozzle with a specified feed rate. The time it takes for the speed to rotate around the moving path hinders the speed-up of processing

In particular, when there are many sharp corners that must be processed, for example, when multiple parts with sharp corners to be cut are arranged on the workpiece 70 (nesting), or in the case of parts to be cut In the case of multiple sharp corners, the processing speed decreases due to the increase in the number of rotations around, and it is more difficult to achieve high-speed processing

[0008] In addition, in the creation of the machining program, it is necessary to insert the loop R program LRP composed of three blocks corresponding to the straight line → circular arc → straight line in each machining block of the acute angle, so it takes a lot of effort to insert, Especially in the case of the above-mentioned sharp corners that need to be processed, there is a disadvantage that more manpower is required

Moreover, corresponding to the number of sharp angles, there is a disadvantage that the program storage capacity for the loop R program LRP is further required

In addition, since the track of the loop R inserted into the corner is large, there is a disadvantage that the material is cut off in vain, and the nesting efficiency is reduced.

Images