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The term "slot compensation" comes from the flame cutting machine. With the development of science and technology, a series of cutting products such as plasma cutting machines, laser cutting machines and waterjet cutting machines have emerged, but they all have a common shortcoming. In the cutting process, the size of the workpieces to be cut will be larger than the actual size. The size of the drawing is 1mm smaller. In order to solve this problem, "slot compensation" plays a crucial role.
Various CNC cutting such as: flame, plasma, laser, water jet (water jet), wire cutting machine, etc. When cutting, the trajectory of the walking according to the CNC command is the theoretical size, and the actual cutting size will have a slight offset. This is because there is a slit at the time of cutting, and the slit is the part that is lost during cutting. Therefore, if the geometrical compensation is not performed, the length of the outer contour portion of the actually cut part will become smaller and the inner contour size will become larger (the bilateral just happens to be different) The width of the kerf, half of the unilateral phase difference kerf).
In order to compensate for the dimensional difference caused by the kerf loss, it is necessary to compensate the geometrical dimensions, compensation software compensation and numerical control system compensation. Their ultimate purpose is to make the trajectory of the cutting machine shift, so that the cutting will produce kerf loss. The size is exactly equal to the size of the programming drawing. This can be easily solved with nesting software. When the nesting software is programmed, the software compensates as long as the programming parameters (compensation radius) are input. When generating the NC code, the geometry is automatically offset according to the inner and outer contours. (Note that only closed contours can be compensated) In the NC code, offset commands (left compensation, right compensation, and closed compensation, such as G41 G42 G40) can also be generated, so that the CNC system can continue to compensate according to the compensation offset direction. . If the software compensation amount is set to 0, no compensation is generated, but the compensation command still exists, and it can be compensated by the numerical control system during cutting.
Pay attention to the following points when setting the kerf compensation:
1. After setting the software compensation, it is generally not necessary to compensate on the CNC system, otherwise the compensation repeat size will be biased again. However, if the software compensation is still a little bit after cutting, it can be compensated by the CNC system.
2. If the compensation is through the CNC system, the compensation amount should be set to zero in the software.
3. If you are not sure how much size should be compensated, you can cut a rectangle on the scrap and measure the actual size and programming size to calculate the required compensation amount.
4. The numerical control system is difficult to deal with the compensation of small arcs. If the arc is smaller than the compensation radius, it can't be cut out, and it can't be compensated correctly (the theoretical radius becomes negative). For this case, you should consider modifying the parts. Diagram, or consider using software compensation to find problems in time.
Various CNC cutting such as: flame, plasma, laser, water jet (water jet), wire cutting machine, etc. When cutting, the trajectory of the walking according to the CNC command is the theoretical size, and the actual cutting size will have a slight offset. This is because there is a slit at the time of cutting, and the slit is the part that is lost during cutting. Therefore, if the geometrical compensation is not performed, the length of the outer contour portion of the actually cut part will become smaller and the inner contour size will become larger (the bilateral just happens to be different) The width of the kerf, half of the unilateral phase difference kerf).
In order to compensate for the dimensional difference caused by the kerf loss, it is necessary to compensate the geometrical dimensions, compensation software compensation and numerical control system compensation. Their ultimate purpose is to make the trajectory of the cutting machine shift, so that the cutting will produce kerf loss. The size is exactly equal to the size of the programming drawing. This can be easily solved with nesting software. When the nesting software is programmed, the software compensates as long as the programming parameters (compensation radius) are input. When generating the NC code, the geometry is automatically offset according to the inner and outer contours. (Note that only closed contours can be compensated) In the NC code, offset commands (left compensation, right compensation, and closed compensation, such as G41 G42 G40) can also be generated, so that the CNC system can continue to compensate according to the compensation offset direction. . If the software compensation amount is set to 0, no compensation is generated, but the compensation command still exists, and it can be compensated by the numerical control system during cutting.
Pay attention to the following points when setting the kerf compensation:
1. After setting the software compensation, it is generally not necessary to compensate on the CNC system, otherwise the compensation repeat size will be biased again. However, if the software compensation is still a little bit after cutting, it can be compensated by the CNC system.
2. If the compensation is through the CNC system, the compensation amount should be set to zero in the software.
3. If you are not sure how much size should be compensated, you can cut a rectangle on the scrap and measure the actual size and programming size to calculate the required compensation amount.
4. The numerical control system is difficult to deal with the compensation of small arcs. If the arc is smaller than the compensation radius, it can't be cut out, and it can't be compensated correctly (the theoretical radius becomes negative). For this case, you should consider modifying the parts. Diagram, or consider using software compensation to find problems in time.
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