高职《平面四杆机构急回特性》教法浅析

急回特性是平面四杆机构的基本性质之一。对急回特性的分析是高职《机械基础》教学中的一个重点和难点,如何将四杆机构动态过程中发生的急回现象在授课中清楚、形象地展现出来,让学生易于接受、听懂、学会,不仅需要从教学环节上精心设计,还需利用现代化教学手段等多方面着手,才能达到良好的教学效果。

Analysis of Teaching Method of"Quick-return Characteristic of Parallel Four-bar Mechanism"for Higher Vocational School

Quick-return characteristic is one of the basic characteristics of parallel four-bar mechanism. Analyzing quick-return characteristic is a difficult and important point in the teaching of the course of ＂Mechanical Basis＂. To clearly and vividly display quick-return phenomenon in the four-bar mechanism dynamic course, and let students accept, understand and grasp it, we not only have to meticulously design teaching procedures, but also make use of modem teaching means. We can achieve a better teaching effect.