新型滚子链的设计方法及其啮合分析  

Study on sprocket profile and meshing analysis of roller chain drive

作　　者：李兆文[1,2] 王勇[1] 

机构地区：[1]山东大学机械工程学院高效洁净机械制造教育部重点实验室,山东济南250061 [2]山东轻工业学院机械工程学院,山东济南250353

出　　处：《江苏大学学报（自然科学版）》2011年第1期11-15,共5页Journal of Jiangsu University：Natural Science Edition

基　　金：国家自然科学基金资助项目(50775130)

摘　　要：为了减小链传动过程中的啮入冲击、振动和噪声,设计了一种新型滚子链机构.模拟链轮与链条的相对运动过程,把滚子作为假想刀具,利用AutoCAD的二次开发工具ObjectARX进行编程,由滚子的运动轨迹包络出链轮的齿形.建立了采用新型链轮的滚子链传动系统的动力学模型,可以精确地模拟滚子链系统的工作过程.对标准滚子链传动系统和新型滚子链传动系统的啮合仿真分析表明,采用新型链轮可以提高链条的承载能力,改善链条的受力情况,减小链传动过程中的啮入冲击.A new sprocket was developed by simulating actual meshing process of sprocket and rollers.Based on the theory of approximate conjugate meshing,a way of simulating the meshing process of roller chain drive was developed to realize the sprocket virtual machining.The profile of sprocket teeth was the envelope of rollers which moved on the sprocket rough.Virtual machining of sprocket profile was performed using secondary developing technology of AutoCAD.A dynamic model of a roller chain drive mechanism with new sprocket was built using multi-body dynamic techniques.The meshing process of roller chain drive can be accurately simulated by this model.Dynamic simulation results using mechanism with new sprocket are compared with those using mechanism with ISO 606 sprocket.Simulation analysis shows that tension between chain links is decreased and chain/sprocket meshing impact is also reduced by applying the new sprocket.

关 键 词：滚子链 链传动 虚拟加工 计算机模拟 动力学模型 

分 类 号：TH132[机械工程—机械制造及自动化]