浮动滚子推杆盘形凸轮机构的传动性能评价与第Ⅰ类尺寸综合问题

The Transmission Performance Evaluation and Class-I Size Synthesis Task of Floating Roller Pushrod-disc Cam Linkage Mechanism

以德国某高速印刷机送纸机构为研究对象,提出“功率传动节点”和“泛压力角”新概念,得到送纸机构存在“第一、第二功率传动节点”和“第一、第二泛压力角α_(1)和α_(2)”的结论。通过“释放滚子中心C”提出浮动滚子推杆盘形凸轮机构的一般型及其第Ⅰ类尺寸综合问题的科学准确描述,揭示关键构件的受力汇交特征,提出“瞬时/整程满足第二泛压力角α_(2)≤[α_(2)]条件”特别是“瞬时/整程满足第一、第二泛压力角α_(1)≤[α_(1)]∩α_(2)≤[α_(2)]条件”滚子中心的求解原理、路径和机构最小尺寸的求解方法,较为圆满解决了浮动滚子推杆盘形凸轮机构的传动性能评价与第Ⅰ类尺寸综合问题,并用算例进行了验证。

Taking the paper feeding mechanism of a high speed printing machine in Germany as the object of study,two new concepts,“power transmission node”as well as“general pressure angle”,and their theoretical bases are proposed.The two new concepts are universal for studying and analyzing the power transfer point location and performance evaluation,according to the important conclusions of“the first and second power transmission nodes”and“the first and second general pressure angleα_(1) andα_(2)”obtained for the paper feeding mechanism.By“releasing the roller center C”,the scope of the study is made more general and systematic.A scientific and accurate description of the Class-I size synthesis of the task of the floating roller pushrod-disc cam linkage mechanism is proposed.By revealing the force convergence characteristics of the key links,the innovative solution principle and solution paths for“the instantaneous/whole range satisfies the second general pressure angleα_(2)≤[α_(2)],α_(1)≤[α_(1)]∩α_(2)≤[α_(2)]condition”of the roller center and the minimum size solution of the mechanism are proposed.The transmission performance evaluation and Class-I size synthesis task for the floating roller pushrod-disc cam linkage mechanism is satisfactorily studied and solved.