摘要
由于传统的螺栓拧紧方法不能满足裂解加工要求,本文开发研究了裂解连杆螺栓装配机床并进行了仿真试验。介绍了螺栓拧紧机床的基本结构和自动螺栓装配过程,建立了该机床的虚拟样机模型,对装配螺栓过程进行了动态仿真;进行了机床的扭矩/转角试验,确定了某轿车连杆的螺栓拧紧工艺参数为20N.m+95°,采用该工艺能满足该连杆的螺栓装配要求;最后,讨论了定扭矩装配螺栓工序可能出现的质量缺陷,并提出了相应缺陷的解决方案。仿真结果表明,螺栓能准确穿入到连杆螺栓孔内并装配到连杆上。扭矩/转角试验表明,根据螺栓在装配过程中的伸长变形量可判断螺栓装配的轴向力是否符合要求,进而可确定连杆的定扭矩装配工艺。该项研究对螺栓拧紧机床的工程设计和裂解连杆工艺有指导意义。
An assembling bolt machine for fracture splitting（FS） connecting rods was developed,for the traditional fixing procedure for bolts could not be suitable for the FS of connecting rods.The basic structure of the assembling bolt machine and bolt assembling process were briefly introduced.Then,a virtual prototyping model for the machine was constructed based on the computer virtual technology to dynamically simulate assembling bolt processes.Torque and angle experiments were also carried out,the parameter 20N·m＋95° was chosen as the assembling techniques for the FS connecting rod of a particular car.Obtained results show that the assembling techniques can satisfy its assembling requirement.Finally,the quality defects during the fixing bolts were discussed,and the solvents towards these defects were given.Dynamic simulation results indicate that the blots can be accurately transferred into bolt holes and assmbled on connecting rods.Torque and angle experiments show that the distortion of bolts during the assembling process can judge whether the axis force of bolts can satisfy the requirements and can determine the assembling techniques of control torque for connecting rods.This paper provides a reliable basis for the design of the assembling bolt machines and the research of the FS connecting rod techniques.
出处
《光学精密工程》
EI
CAS
CSCD
北大核心
2010年第7期1586-1594,共9页
Optics and Precision Engineering
基金
"十五"科技攻关计划资助项目(No.2004BA907A19)
国家自然科学基金资助项目(No.50375066)
国家教育部博士点基金资助项目(No.20060183066)
关键词
连杆
裂解
螺栓装配
动力学仿真
扭矩/转角法
裂解质量
connecting rod
fracture splitting
assembling bolts
Dynamics Simulation
Torque/angle method
Fracture splitting quality
