基于非圆齿轮传动的精密压力机驱动机构设计  

The Design of Drive Mechanism for Precision Press Based on Non-circular Gears

作　　者：于大坚[1] 邬义杰[1] 王彬[1] 刘孝亮[1] 

机构地区：[1]浙江大学现代制造工程研究所,流体传动与控制国家重点实验室,杭州310027

出　　处：《组合机床与自动化加工技术》2010年第12期13-17,共5页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家自然科学基金资助项目(50975256);国家“863”高科技研究发展划资助项目(2006AA04Z233);国家教育部博士点基金资助项目(20070335204);浙江省自然科学基金重点资助项目(Z1080537)

摘　　要：针对传统压力机在精密冲压时,难以使冲头严格按照工艺要求的理想曲线运动,导致冲压零件的质量降低,精度达不到要求的缺点。提出一种基于非圆齿轮的新颖驱动机构方案,通过合理设计非圆齿轮的节曲线使冲头严格按照理想速度规律运动。给出了冲头理想速度运动曲线的拟合过程,并提出了确定非圆齿轮传动比的计算方法,分析了相关的约束边界条件,最后给出了非圆齿轮的节曲线的设计方法。与传统的压力机的驱动机构相比,该机构具有设计简单、结构紧凑、冲压精度高等优点,在精密冲压机床中有着很好的应用前景。As is known to all,in precise stamping,traditional press can not make punches＇ movement match the ideal curve which is conformity with technical process requirement.Then it makes stamping parts impair the quality,and precision can not meet the requirement.In view of the traditional press defect,this paper shows a novel drive mechanism based on non-circular gears,which can make punch move according to the ideal curve through the rational design of non-circular gear.This paper puts forward a method of designing punch ideal moving curve according to the requirement of technical process,and a method of making sure the non-circular gears transmission relationship according to the characteristics of the movement.It also analyzes the related limit conditions,shows the method of determining non-circular gears pitch curve.Compared with the traditional machine,this design is simple,and has compact structure and high accuracy.The new design has good application prospects in the field of the precision stamping machine.

关 键 词：压力机 非圆齿轮 节曲线 驱动机构 

分 类 号：TH16[机械工程—机械制造及自动化] TG65[金属学及工艺—金属切削加工及机床]