钟形壳球面沟槽新型精磨夹具的设计与分析  

Design and Analysis of a New Type of Fine Grinding Jig for the Bell Shaped Shell and Spherical Groove

作　　者：赵青青 朱永伟[1] 杨庭飞 孙继欣 张宇 ZHAO Qing-qing;ZHU Yong-wei;YANG Ting-fei;SUN Ji-xin;ZHANC Yu(School of Mechanical Engineering,Yangzhou University,Yangzhou Jiangsu 225127,China)

机构地区：[1]扬州大学机械工程学院,江苏扬州225127

出　　处：《组合机床与自动化加工技术》2018年第8期150-153,共4页Modular Machine Tool & Automatic Manufacturing Technique

摘　　要：针对钟形壳球面沟槽精密磨削加工过程中定位夹紧及上下料过程时间长,生产效率较低的问题,设计一种自动定心,弹性夹紧一体的钟形壳球面沟槽精密磨削夹具,并创新设计了自动弹出机构,适用不同尺寸零件加工辅助机构。在完善总体夹具设计基础上,根据受力情况,对弹性夹头和钟形壳的变形量进行理论计算,并通过Solid Works建立弹性夹头三维模型,有限元Workbench分析弹性夹头的静力学特性,分析结果与理论结果一致,验证弹性夹头结构设计的合理性。利用此新型夹具,可有效提高钟形壳球面沟槽精密磨削的生产效率。According to the positioning precision grinding of spherical shell bell shaped groove in the process of clamping and discharging process is long,lowefficiency problem,design a kind of automatic centering,bell shaped shell spherical precision grinding fixture clamping groove elastic body,and the innovative design of the automatic ejecting mechanism,suitable for different sizes of parts processing auxiliary mechanism. After improving the overall fixture design basis,according to the conditions of stress,deformation of the elastic chuck and the bell housing was calculated,building 3 D model of the elastic chuck by Solid and Works,Workbench finite element static analysis of elastic chuck,The results of the analysis are in agreement with the theoretical results,verifying the structural design of the elastic chuck. Using this newfixture,the production efficiency of the precision grinding of the bell shaped shell and spherical groove can be effectively improved.

关 键 词：钟形壳球面沟槽 精磨夹具设计 弹性夹头有限元分析 

分 类 号：TH122[机械工程—机械设计及理论] TG65[金属学及工艺—金属切削加工及机床]