发罩锁尺寸链计算及安全钩改进设计  

Calculation for Dimension Chain of Hood Lock and Improvement Design of Safety Hook

作　　者：徐立强[1] 马岳明 唐志涛[1] 石运序[1] XU Li-qiang MA Yue-ming TANG Zhi-tao SHI Yun-xu(School of Electromechanical Automobile Engineering, Yantai University, Key Laboratory of Advanced Manufacturing and Control Technology in Universities of Shandong, Yantai University, Yantai 264005, Chin)

机构地区：[1]烟台大学机电汽车工程学院山东省高校先进制造与控制技术重点实验室,山东烟台264005

出　　处：《烟台大学学报（自然科学与工程版）》2016年第4期280-283,共4页Journal of Yantai University(Natural Science and Engineering Edition)

基　　金：国家自然科学基金资助项目(51405416);山东省高等学校科技计划项目(J15LB02;J14LB07);山东省科技发展计划(2013YD02045)

摘　　要：为研究某款发罩锁装配后的装配精度和安全钩的应力、应变分布,利用Solidworks软件建立了某款发罩锁的三维模型,利用平面尺寸链对装配后安全钩的晃动量进行了计算,根据计算结果对部分零件的尺寸和公差进行了调整,既满足了晃动量要求,又合理分配了零件的公差,降低了发罩锁的生产成本.用Solidworks2014 simulation对安全钩进行了有限元分析,获得了不同工况下的应力、应变值,根据分析结果对手柄位置做了改进设计,改进后的安全钩减少了材料,提高了强度,降低了重量.In order to study the assembly accuracy of engine hood lock, the stress and strain distribution of safety hook, the three-dimensional model of engine hood lock is built based on solidworks software. The swaying of safety hook is calculated by the planar dimension chain. According to the calculation results, the dimensions and tolerances of the parts are adjusted, which not only meets the requirements of the swaying but also reasonably allocates part tolerance and reduces production costs. Moreover, the stress and strain of safety hook in different conditions are analyzed by finite element method. Finally, the improvements of handle position are designed, which is beneficial to reduce material, improve strength and lower weight.

关 键 词：汽车发动机罩锁 平面尺寸链 安全钩 有限元法 

分 类 号：TG801[金属学及工艺—公差测量技术]