Dual-meshing needle finger cam indexing mechanism

Abstract

The invention relates to a dual-meshing needle finger cam indexing mechanism which comprises an input shaft, an output shaft, an internal cycloidal wheel, a needle wheel, needle teeth and an indexing cam, wherein the input shaft is coaxially arranged on the middles of a front cover and a baffle, the internal cycloidal wheel is arranged on the input shaft, the output shaft is coaxially arranged on the middles of the baffle and a rear cover, the indexing cam with a plurality of special outer edge contour lines is arranged on the output shaft, and the input shaft and the output shaft are coaxially and alternatively arranged; the eccentrically arranged needle wheel is arranged on the input shaft between the internal cycloidal wheel and the indexing cam through a rolling bearing, a plurality of needle teeth matched with the cam are alternatively and uniformly arranged on the needle wheel coaxially and radically, one ends of the needle teeth are meshed with the internal cycloidal wheel, and the other ends of the needle teeth are blocked with the indexing cam in a sliding manner. The dual-meshing needle finger cam indexing mechanism has the advantages of simple and compact structure, small quantity of parts, stable transmission, reliable operation and high transmission efficiency, material saving, light whole mass, and reduced manufacture cost due to the fact that parts are processed and manufactured easily.

Description

technical field [0001] The invention belongs to the technical field of machinery, and relates to a transmission mechanism, in particular to a double-meshing pin-tooth cam indexing mechanism. Background technique [0002] The intermittent cam mechanism has been widely used in the automation part of modern industry, and it has become the mainstream device of precision drive in the world today. The products involve packaging, printing, pharmaceutical, chemical, tobacco, electronic appliances, glass ceramics, automobile manufacturing and other automated production lines and various general mechanical equipment. As the core transmission device of automated machines, they play a vital role. However, at present, most of the cam intermittent mechanisms use a single follower to contact the cam to transmit torque. Taking the arc-shaped indexing cam mechanism as an example, the number of rollers that are in contact with the cam at the same time is 1-2, and the transmission torque is li...

AI Technical Summary

Problems solved by technology

However, at present, most of the cam intermittent mechanisms use a single follower to contact the cam to transmit torque. Taking the arc-shaped indexing cam mechanism as an example, the number of rollers that are in contact with the cam at the same time is 1-2, and the transmission torque is limited and participates in meshing. The stress on the rollers is relatively concentrated and prone to contact fatigue strength damage

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