T/WLJC 16-2018 The precision testing method for arcuate cam mechanism

Scope

Scope: This standard specifies the detection methods for the indexing accuracy, dwell accuracy, repeatability, and clearance of cam mechanisms with curved surfaces. This standard applies to cam mechanisms with curved surfaces used in high-speed, gap-free transmission devices. Main technical content: A cam mechanism with curved surfaces refers to a cam mechanism in which the base body of the active cam is an arc-shaped rotating body, and the cam profile is made into a convex ridge. The intermittent movement and positioning of the indexing plate are achieved through the change of the helical pitch angle of the working surface. Rollers are evenly distributed along the circumference of the indexing plate on the driven turntable. During the development of this standard, the experience gained from the research and development of the national major science and technology project "Disc-type Tool Library with Automatic Tool Changing Device" was summarized, and the detection methods for the indexing accuracy, dwell accuracy, repeatability, and clearance of cam mechanisms with curved surfaces were mainly addressed. The cam mechanisms with curved surfaces that are tested for accuracy according to the methods specified in this standard have been used in the products of the national major science and technology project "Disc-type Tool Library with Automatic Tool Changing Device", and it has been verified that they are technically mature.

Development Information

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