浮动平底推杆共轭凸轮机构的狭义/广义第Ⅱ类机构综合问题

摘要/Abstract

摘要： 引入“往程/返程”和“F型/P型机构”等关键性概念，划分了“主/副凸轮机构”，展开了分割独立性研究，给出了副凸轮机构的“瞬时一维直线区段”生成原理图和v′C1-θ1、v′C2-θ1和u′K-θ1曲线。提出了满足许用压力角和凸轮轮廓外凸条件的机构解的存在性(态)，阐释了副凸轮机构与主凸轮机构的差异，揭示出最小跨距D*min的客观存在性，解决了浮动平底推杆共轭凸轮机构的狭义/广义第Ⅱ类机构综合问题。

关键词: 浮动平底推杆, 共轭凸轮机构, 机构综合, 瞬时一维直线区段, 最小跨距

Abstract: Concepts of “rise and return travel” and “F/P type mechanism” were adopted herein. Conjugate cam mechanism was divided into main cam mechanism and assistant cam mechanism, which were studied respectively. Basic schematic diagram of instantaneous one dimensional linear area of the assistant cam and the curves of v′C1-θ1, v′C2-θ1 and u′K-θ1were offered. Then, the existence(features) of mechanism solution which met conditions of allowable pressure angles and cam contour were presented. In addition, the differences between the main cam mechanism and the assistant cam mechanism were presented. The existence of minimum spanning distance D*min was revealed as well. By several instructive important conclusions, the narrow and generalized class Ⅱ synthesis of conjugate cam mechanism with floating flat face pushrod was resolved.

Key words: floating flat face pushrod, conjugate cam mechanism, synthesis of mechanism, instantaneous one dimensional linear area, minimum spanning distance

中图分类号:

TH112.2

常勇, 吴秋平, 李延平. 浮动平底推杆共轭凸轮机构的狭义/广义第Ⅱ类机构综合问题[J]. 中国机械工程.

Chang Yong, Wu Qiuping, Li Yanping. Narrow/Generalized ClassⅡ Synthesis of Conjugate Cam Mechanism with Floating Flat Face Pushrod[J]. China Mechanical Engineering.

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