Smooth optimization design method of cam profile

Abstract

The invention discloses a smooth optimization design method of a cam profile. The smooth optimization design method comprises the following steps that the base circle radius, the measuring head radius and the original profile table of the original cam are subjected to interpolation calculation by a spline function, and the new base circle radius is obtained; the center position of the cam is calculated through the new base circle radius; the center position of a measuring head is calculated through the engagement relationship of the new base circle radius and the measuring head radius of the original cam; the position relationship of the center position of the measuring head and the center position of the cam is obtained through the calculated center position of the measuring head; the relationship of the center position of the measuring head and the center position of the cam is substituted into the spline function, and corresponding polar angles and polar diameters are obtained; and the obtained polar angles and the polar diameters are used for generating a new profile table. The smooth optimization design method has the advantages that the smooth optimization on the profile table of the cam can be realized, so the optimized profile table is used for processing cams with smaller chatter marks.

Description

technical field [0001] The invention relates to the technical field of cam processing, in particular to a cam profile smooth optimization design method. Background technique [0002] The profile table of the cam is closely related to the radius of the base circle of the cam and the radius of the probe, and is used to characterize the contour line characteristics of the cam. Therefore, when the lift point density in the profile table is small, that is, when the degree interval is large, the vibration pattern of the cam processed by the profile table is relatively large. When a cam with a large vibration pattern is used, it will cause The howling of the engine is too loud and will affect the performance of the entire engine. Contents of the invention [0003] In view of this, the present invention provides a cam profile smooth optimization design method to realize the smooth optimization of the profile table of the cam, so that the optimized profile table can be used to pro...

AI Technical Summary

Problems solved by technology

Therefore, when the lift point density in the profile table is small, that is, when the degree interval is large, the vibration pattern of the cam processed by the profile table is relatively large. When a cam with a large vibration pattern is used, it will cause The howling of the engine is too loud and will affect the performance of the entire engine

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