新型活塞异形销孔加工方法的研究  

Research on boring mechanism for piston noncircular pin hole

作　　者：张凯[1] 胡德金[1] 马浩全[1] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200030

出　　处：《组合机床与自动化加工技术》2003年第8期6-7,9,共3页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家自然科学基金资助项目 (50 1 750 72 )

摘　　要：简述了采用活塞异形销孔的必要性及其结构特点。提出一种新型活塞异形销孔数控加工方法 ,该方法采用一个基于压电陶瓷驱动的柔性铰链放大机构来实现镗刀的径向微位移。进行了异形孔加工过程中刀具运动特性分析 ,给出了柔性铰链刚度参数的设计方法 ,并进行了有限元分析。结果表明该方法适于异形孔的精密加工。The paper analyses the necessaries for piston in modern auto to adopt noncircular pin hole. The paper presents a new way for piston noncircular pin hole boring which uses a piezodriven displacement mechanism. The working principle of the mechanism have been analyzed. In order to attain desired displacement of boring bar, the piezo actuator is mounted radially in the middle of the rotating bar of the mechanism. The kinematics of the mechanism has been analyses, the design method of rotating rigidity for one-axis flexure hinge has been illustrated in detail, and FEM simulations have been carried out. The results show the mechanism is suitable for noncircular pin hole boring.

关 键 词：异形销孔 柔性铰链 压电驱动 有限元 加工方法 发动机 

分 类 号：TK406[动力工程及工程热物理—动力机械及工程] TG52[金属学及工艺—金属切削加工及机床]