Swing follower cam-gear train combination teaching aid

Abstract

The invention discloses a swing follower cam-gear train combination teaching aid. The motion rule knowledge points of swing followers of a cam mechanism, a counter-rotating method of the cam mechanism, and the conversion frame principle of transmission ratio calculation in an epicyclic gear train are teaching difficult points, yet most students cannot completely understand principles and basic knowledge points. The teaching aid comprises a general support, a driving conversion device, a driving wheel train mechanism, a planetary gear train mechanism and a cam assembly. The driving conversion device manually or electrically drives the driving wheel train mechanism and the planetary gear train mechanism; and the motion and the counter-rotating method of the cam assembly are realized through the planetary gear train mechanism. According to the invention, the motion rules of swing followers of different types can be demonstrated, the head shapes of the swing followers can be converted, basic circles and theoretical profiles are extensible, cam turn angles are readable, the displacement of the swing followers is readable, the motion rules are displayed, the counter-rotating methods of the cam mechanism of the swing followers and the knowledge point of the conversion frame principle of the transmission ratio calculation of the epicyclic gear train can be demonstrated.

Description

technical field [0001] The invention belongs to the field of teaching aids, in particular to a combined teaching aid of a swing follower cam-wheel system. Background technique [0002] "Mechanical Principles" is a basic course for mechanical majors. It has strong theoretical and practical aspects. Whether students learn it well will directly affect future design and practice. The knowledge points of the motion law of the oscillating follower of the cam mechanism, the reversal method of the cam mechanism, and the transformation frame principle of the calculation of the transmission ratio in the epicyclic gear train are difficult points in the teaching. The teacher uses multimedia means to explain it with animation in the teaching process, but many Most students can't fully understand the principles and basic knowledge points. Students seem to understand but don't understand, and the teaching effect is not good. In the era of high-efficiency teaching, teaching aids are even m...

AI Technical Summary

Problems solved by technology

The knowledge points of the motion law of the oscillating follower of the cam mechanism, the reversal method of the cam mechanism, and the transformation frame principle of the calculation of the transmission ratio in the epicyclic gear train are difficult points in the teaching. The teacher uses multimedia means to explain it with animation in the teaching process, but many Most students can't fully understand the principles and basic knowledge points. Students seem to understand but don't understand, and the teaching effect is not good.

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