The influence of numerical control numerical programming on machining accuracy.
There are many factors of machining deviation in the CNC machining process, which can be divided into two aspects: one is the error occurred of technology process system of machine tool, including the accuracy error of the machine tool motion, size error of the tools, thermal deformation and elastic deformation error; on the other hand, the error is from NC programming, including parts contour fitting error, interpolation error, size adjustment error and the error caused by mechanic method etc.. The effective processing of numerical value in numerical control programming is a powerful means to adjust all kinds of errors.
The dealing of numerical value in the process of NC programming can be summed up from the following aspects: parts of the geometric conditions and tolerances, dimension chain adjustment, tool compensation and processing line determination etc.
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