Cam rotation angle and grinding wheel rotation angle conversion algorithm

Abstract

A conversion algorithm of a cam rotation angle and a grinding wheel rotation angle is used for correcting a machining program of a cam. The conversion algorithm comprises the following steps: S1, establishing a coordinate system by taking relative coordinate positions of a cam and a grinding wheel on a machine tool as a reference and taking the center of a base circle of the cam as a coordinate origin, and calculating coordinates of a circle center A of a standard roller through a formula (1); s2, the slope K of the normal F is calculated through a formula (2), and the coordinate of the center C of the grinding wheel is obtained through a formula (3); and S3, the grinding wheel rotation angle theta s is obtained through a formula (4). According to the method, the grinding wheel rotating angle corresponding to the out-of-tolerance lift of the cam can be quickly found out at the machine tool end, and the machining program of the machine tool can be accurately compensated and corrected by referring to the theoretical abscissa of the grinding wheel, so that the actual machining molded line of the cam is close to the lift table, and the machining quality of the cam is improved.

Description

technical field [0001] The invention relates to the field of cam machining, in particular to a conversion algorithm of a cam rotation angle and a grinding wheel rotation angle. Background technique [0002] When using the cam grinder to process the cam, the grinding wheel moves back and forth along the X-axis of the machine tool, while the cam rotates along the C-axis, and the cam profile is ground through the combination of the two movements. For the processing of cams, the standard roller lift table corresponding to the cam is generally provided by the designer, and the processing side generates a processing program according to the lift table. Due to the mechanical error of the cam grinder itself, the theoretical error will also occur during the generation of the machining program, and these errors will cause the actual machining profile of the cam to be inconsistent with the lift table. [0003] In order to make the actual machining profile close to the lift table, it i...

AI Technical Summary

Problems solved by technology

Due to the mechanical error of the cam grinder itself, the machining program will also produce theoretical errors during the generation process, and these errors will cause the actual machining profile of the cam to be inconsistent with the lift table

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