螺钉自动抓拿认扣装置的设计  

Automated holding and screwing mechanism for bolts

作　　者：孟威[1] 张伯鹏[1] 赵大泉[1] 徐家球[1] 郑力[1] 

机构地区：[1]清华大学精密仪器与机械学系,北京100084

出　　处：《清华大学学报（自然科学版）》2000年第8期57-60,共4页Journal of Tsinghua University(Science and Technology)

基　　金：国家"八六三"高技术项目 !(86 3- 5 12 - 0 5 - 0 6 )

摘　　要：为克服螺钉自动装配作业中存在的认扣成功率低、机构复杂、专用设备成本较高等缺点 ,在分析典型轴孔间隙配合插入问题的基础上 ,采用自然参数向量对螺钉在螺孔中装配时的允许倾斜角度进行了计算 ,阐述了螺钉认扣过程中的几种状态 ,设计出利用立式加工中心对 M8内 6角螺钉自动抓拿认扣的装置。经实验验证 ,该装置结构简单、性能可靠 ,在保证螺钉装配成功率的同时 。Bolt assembly processes have a low probability of successfully screwing the bolt on the first screw, and have complex holding mechanisms and expensive single use equipment. Analysis of the general peg hole clearance fit insertion problem was used to calculate the allowed slope angle of a bolt in the screw thread hole using natural parameter vector. The analysis illustrates the state of the bolt screwing on the first screw and is used to design a mechanism which uses a machining center to automatically hold and screw interior hexangular bolts. The mechanism is simple and can ensure high probability successful bolt assemblies. The system can also expand the capabilities of machining centers.

关 键 词：螺钉装配 抓拿认扣装置 加工中心 

分 类 号：TH131.3[机械工程—机械制造及自动化] TG95[金属学及工艺—钳工工艺]