Globoidal cam mechanism capable of achieving 180-degree reciprocating intermittent swing

Abstract

The invention provides a globoidal cam mechanism capable of achieving 180-degree reciprocating intermittent swing. The globoidal cam mechanism mainly comprises a globoidal cam body fixedly connected to an input shaft and a swing disc assembly fixedly connected to an output shaft. The swing disc assembly comprises a swing disc and four rollers. The axes of the rollers are all perpendicularly intersected with the axis of the swing disc. An included angle between the adjacent roller axes is 60 degrees. Convex ridges on the cam body are engaged with the rollers. The convex ridge outlines are divided into two intermittent period segments and two swing period segments in the process that the cam body rotates by a circle. The convex ridge outlines within the two swing period segments each comprise three sections of spiral convex ridges, and thus the swing disc can be made to swing by 180 degrees. The convex ridge outlines within the two intermittent period segments are both toroidal surfaces which are located at the two shaft ends of the globoidal cam body correspondingly. In the process that the cam body rotates by one circle, the swing disc is sequentially subjected to clockwise swing, primary intermitting, anticlockwise swing and secondary intermitting, thus, 180-degree reciprocating intermittent swing is achieved, and the double-stop movement rule is achieved.

Description

technical field [0001] The invention relates to an intermittent transmission mechanism, in particular to an arc cam mechanism capable of realizing 180-degree reciprocating intermittent swing, and belongs to the technical field of machinery. Background technique [0002] The cam oscillating mechanism mainly consists of a cam body and a oscillating plate with rollers. The cam pushes the rollers on the oscillating plate to convert the continuous rotation of the cam into the periodic intermittent reciprocating swing of the oscillating plate. There are many structural forms of cam swing mechanism, such as plane swing cam, cylindrical swing cam or arc swing cam. Among them, due to the small impact and vibration of the cam mechanism, the operation is stable and reliable, and it has good dynamic characteristics, so in the production line process that requires high-speed and high-precision swing, the cam mechanism is often used to realize the balance between the two processes. mater...

AI Technical Summary

Problems solved by technology

In the production line, the angle between two adjacent processes is often 180 degrees, which requires the arc cam swing mechanism to complete the 180-degree reciprocating swing, and a certain working time must be left in the two process positions, that is, The motion law of arcuate swing cam mechanism must be double-stay motion law, which cannot be realized by connecting rod mechanism and other mechanisms.

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