一种安全快速精密对中夹具的设计与研究  

Design and research of a safe fast exact and centripetal clamp

作　　者：刘延龙[1] 

机构地区：[1]中国工程物理研究院机械制造工艺研究所,四川绵阳621900

出　　处：《机械》2011年第3期53-55,共3页Machinery

摘　　要：对中装夹是具有回转形状零件装配的基本问题,而薄壁件与脆性材料件的装夹特别强调安全性。针对该类特殊零件的具体装夹定位要求,提出了采用凸轮实现多点联动、采用定位托座进行机械限位、采用垫层提供安全的夹紧力的设计方案。介绍了该夹具的具体结构与工作原理,研究了消除传动间隙的方法,计算分析了夹紧力。对研制的夹具进行了初步实验研究,探索了不同厚度的垫层与夹紧力之间的关系。装夹实验结果表明该夹具设计合理,满足使用要求。Centripetal clamp is a basic problem of cylindrical parts assembly and security is especially emphasize for thin or friable objects.With respect to the special location request,a fast and centripetal clamp is designed with a cam to drive four claw at one time,a seat to limit the claw＇s position and pads to provide safe stress.Detailed structure and principle of the clamp are introduced,a method of eliminating transmission clearance is researched on,and clamp stress is analyzed.The relation of pad and stress is explored in a elementary experiment,which proves that the clamp struct is rational and satisfied for practical request.

关 键 词：安全 快速 精密 对中 夹具设计 

分 类 号：TG751.9[金属学及工艺—刀具与模具]