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Comprehensive demonstrating teaching tool for cam mechanism

A technology of cam mechanism and teaching aids, which is applied in the field of teaching instruments, can solve problems such as difficulty for students to understand, limited teaching effect of teaching aids, and difficulty in explaining for teachers, so as to achieve the effects of facilitating teaching, improving enthusiasm, and filling in gaps

Inactive Publication Date: 2014-08-06
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, it is difficult for the teacher to explain, and the knowledge points of the entire chapter of CAM are relatively abstract, which is difficult for students to understand, and the teaching effect of existing teaching aids is limited

Method used

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  • Comprehensive demonstrating teaching tool for cam mechanism
  • Comprehensive demonstrating teaching tool for cam mechanism
  • Comprehensive demonstrating teaching tool for cam mechanism

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Experimental program
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Embodiment Construction

[0027] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0028] Such as figure 1 , figure 2 , image 3 As shown, the cam mechanism comprehensive demonstration teaching aid of the present invention includes a base 13, a driving device, a fixed-axis gear train 16, a differential gear train 5, a cam 25, a base plate 26, a ratchet mechanism 9 and a push rod 19.

[0029] The base 13 is provided with a bracket 14, a side plate 10 and a rib plate 12, which play the role of fixed support. The driving device is a rocking rod or a driving motor 1 . The driving motor 1 drives the first bevel gear 1601 to rotate through the synchronous belt 3 and the synchronous pulley 2 . Through the joystick, manual operation can be realized, which is convenient for students to experience the oper...

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Abstract

The invention relates to a comprehensive demonstrating teaching tool for a cam mechanism. The comprehensive demonstrating teaching tool comprises a driving device, an ordinary gear train (16), an epicyclic gear train (5), a cam (25), a bottom plate (26), a ratchet mechanism (9) and a push rod (19). The ratchet mechanism (9) comprises an inner ratchet wheel (901), a ratchet wheel cover (904), a pawl (902) and a reset spring (903). The cam (25) is fixedly connected with the ordinary gear train (16) through a tie bar (15), and an output shaft (6) is arranged outside the tie bar (15) in a sleeved mode. The bottom plate (26) is provided with a sliding block (20), and the push rod (19) moves along the sliding block (20). The cam mechanism demonstrating teaching tool can vividly and visually demonstrate the reversal method, the cam profile design, the push rod motion law drawing, the cam mechanism pressure angle demonstration and other knowledge points, a teacher can teach conveniently, students can manually experience the characters of the cam after class, and the study enthusiasm of the students is improved to a maximum extent.

Description

technical field [0001] The invention relates to a teaching instrument, more specifically, to a comprehensive demonstration teaching aid of a cam mechanism. Background technique [0002] The cam mechanism is one of the most commonly used mechanisms in machinery. The reverse method to design the cam profile and the motion characteristics of the cam mechanism is not only the focus but also the difficulty in the course of mechanical principles. During this part of the teaching process, it is difficult for students to establish an intuitive concept. Teachers explain the cam reversal method in teaching, usually through multimedia and other means, which is not intuitive enough, and students generally report that it is difficult to understand. Teaching aids that simply demonstrate cam motion require the teacher to cooperate with both hands when explaining. On the one hand, the cam is rotated forward, and on the other hand, the whole is reversed, and the speed is equal to the former...

Claims

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Application Information

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IPC IPC(8): G09B25/02
Inventor 常建娥于宗楷胡世艳王闯徐冰瑢鲁力
Owner WUHAN UNIV OF TECH
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