Segmental Compensation Method for Ball Screw Machining

Abstract

The invention provides a sectional compensation method for ball screw machining. The method is characterized by comprising following steps: acquiring a reference curve obtained through the analysis and calculation of a ball screw machining process; determining a reference error circle; acquiring the slope of a reference common tangent according to the center of the reference error circle and an origin point of the reference curve; determining the center of the reference error circle point by point along the reference curve from the origin point, and acquiring the slope of the common tangent according to the point and the center of the reference error circle; setting the point in the reference curve as the segment point for sectional compensation when the slope of the common tangent is equal to the slope of the reference common tangent; determining the center of the reference error circle point by point along the reference curve from the segment point until the slope of the common tangent is equal to the slope of the reference common tangent within a certain range, sequentially acquiring all the segment points, and obtaining corresponding segment pitch compensation values according to all the segment points; and performing sectional compensation according to the segment pitch compensation values.

Description

technical field [0001] The invention relates to the technical field of precision machining, in particular to a segmental compensation method for ball screw machining. Background technique [0002] With the development of microcomputer and sensor testing technology, ball screw, as an efficient and precise transmission component, has been widely used in CNC machine tools and various automation equipment, and the quality requirements for ball screw are getting higher and higher. However, due to the many factors affecting the grinding process of the ball screw, the pitch error of the grinding process has always been an important issue for the research of the ball screw manufacturer. Among them, the thermal deformation of the grinding process is an important source of the pitch error in the grinding process of the ball screw, and it is also an important source of factors affecting the surface quality of the ball screw. [0003] At present, the prior art of uniform thermal deform...

AI Technical Summary

Problems solved by technology

However, since the heat source (the grinding heat of the grinding wheel and the workpiece) is always in motion during the grinding process of the ball screw, the resulting thermal deformation is uneven

Therefore, it is difficult to effectively reduce the pitch error of the ball screw caused by thermal deformation by using this uniform compensation method, especially for the grinding of long ball screws, and the uniform compensation method is even more difficult to ensure the accuracy of grinding ball screws

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