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What factors influence the accuracy of laser processing
by：Transon
2021-01-08
A, about the size change
even if, in accordance with the procedures for processing, there are also processed products cannot meet the accuracy requirement. So you need to take countermeasures according to different situations.
1, the size of processed products have change
this is because the incision laser focus on the diameter and the surrounding incision that is affected by the width of burning area. Although under the same conditions, the same processing, using the same offset compensation value can ensure its accuracy, but the focus position setting will depend on the feeling of machine operators to determine, and the thermal lens effect can cause the change of focus position, so you need to regularly check the offset compensation value.
2, processing direction ( Section) Is there a difference on the size of the error of
the upper plate of the dimensional accuracy and dimensional accuracy has different situation. This phenomenon to consider two reasons. First of all, roundness and intensity distribution of a light beam, cause incision width along the direction of processing is different. The solution is to clean optical axis adjustment or optical components. Second, by machining material thermal expansion causes of shorter size long direction shape.
3, warping caused change size accuracy while within the scope of the requirements, but because the reason such as the thermal deformation will result in warping. When processing such as aluminum, copper, stainless steel is very significant, it is affected by the linear expansion coefficient, heat capacity and other physical properties. As for machining shape, aspect ratio, the greater the amount of warping. With low heat processing condition and processing circuit of fluctuate in the machining program, but is not completely solve the problem.
processing panel have had some effect on the residual stress of warping and size error, so we need to process always keep a certain direction.
even if, in accordance with the procedures for processing, there are also processed products cannot meet the accuracy requirement. So you need to take countermeasures according to different situations.
1, the size of processed products have change
this is because the incision laser focus on the diameter and the surrounding incision that is affected by the width of burning area. Although under the same conditions, the same processing, using the same offset compensation value can ensure its accuracy, but the focus position setting will depend on the feeling of machine operators to determine, and the thermal lens effect can cause the change of focus position, so you need to regularly check the offset compensation value.
2, processing direction ( Section) Is there a difference on the size of the error of
the upper plate of the dimensional accuracy and dimensional accuracy has different situation. This phenomenon to consider two reasons. First of all, roundness and intensity distribution of a light beam, cause incision width along the direction of processing is different. The solution is to clean optical axis adjustment or optical components. Second, by machining material thermal expansion causes of shorter size long direction shape.
3, warping caused change size accuracy while within the scope of the requirements, but because the reason such as the thermal deformation will result in warping. When processing such as aluminum, copper, stainless steel is very significant, it is affected by the linear expansion coefficient, heat capacity and other physical properties. As for machining shape, aspect ratio, the greater the amount of warping. With low heat processing condition and processing circuit of fluctuate in the machining program, but is not completely solve the problem.
processing panel have had some effect on the residual stress of warping and size error, so we need to process always keep a certain direction.
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