基于MARC的卡扣插拔力仿真分析

卡扣与卡扣座配合,在将卡扣插入、拔出卡扣座时由于存在过盈配合,故存在插入力、拔出力。而考虑到产品的装配性,插入力、拔出力需控制在一定的范围内才能保证其装配性,因此需要考虑合适过盈量以满足合适的插入、拔出力。但是过盈量并不是唯一影响插入、拔出力的因素,卡扣座的高度也是影响插入、拔出力的因素之一,也需要进行验证。今以某型ABS前三角内盖板与某型挡泥板为例,通过CAE解析,确定过盈量、卡扣座高度对插入力、拔出力的影响关系,以确定合适的过盈量,为后续同类产品设计提供参考依据。

The Simulation of Insertion and Extraction Force between Clip and Clip Seat Based on MARC

There are insertion force and extraction force between clip and clip seat（dog house） combination which is caused by interference between them. In order to make the assembly suitable,the consideration of reasonable interference should be taken. But the interference is not the only element which will affect the value of insertion and extraction force. The height of clip seat（dog house）,one of the factors which has some relationship with the insertion and extraction force, should be taken into account. Now take one of car front door inner covers （ABS） compared with mudguards for example, there will be CAE analysis and experiment which can evaluate the exact factors affecting the insertion and extraction force. So the appropriate interference value can be set.