负半径类摆动推杆盘形凸轮机构尺度综合与可视化软件开发

发布时间：2018-06-15 20:39

本文选题：负半径类 + 摆动推杆　；参考：《集美大学》2014年硕士论文

【摘要】：本学位论文的研究对象是负半径类摆动推杆盘形凸轮机构。由于凸轮与推杆呈凸、凹廓面接触，显著增加了综合曲率半径，降低了接触应力且更易于形成润滑油膜，，故其在承载能力、接触强度、减摩耐磨性能、机械效率和使用持久性等方面，皆具有非常显著、大幅度的提高。本文研究分析了负半径类摆动推杆盘形凸轮机构尺度综合须满足的四项约束条件——运动连通性条件、传动性能条件、运动保真条件和接触强度条件，并基于四项约束条件建立了对象机构尺度综合的具体、定量化参数表示。以特定的机构构型和基本尺寸为例，开展并完成了如下工作：（1）全面系统地介绍了负半径类摆动推杆盘形凸轮机构构型，研究分析了运动连通性条件、传动性能条件、运动保真条件和接触强度条件各自对负半径类摆动推杆盘形凸轮机构尺度的约束和影响，推导得到了各约束条件相应的表达式。（2）基于各约束条件，探索解决运动连通性条件、传动性能条件、运动保真条件和接触强度条件等单纯和组合问题的合理有效途径，给出各种构形机构的最优设计思路，综合出满足诸设计约束、结构紧凑（尺寸最优）的凸轮机构。（3）基于分析综合，开发出同时考虑四项约束条件的负半径类摆动推杆盘形凸轮机构尺度综合系统软件。通过对负半径类摆动推杆盘形凸轮机构尺度综合的分析研究，结合软件得到了负半径类摆动推杆盘形凸轮机构尺度的特点以及各约束条件对其的影响，探索并阐明了各约束条件在负半径类摆动推杆盘形凸轮机构尺度综合过程中相互间的耦合制约关系。
[Abstract]:The research object of this dissertation is negative radius type oscillating push rod disc cam mechanism. Because the cam has convex and concave profile contact with the push rod, the comprehensive radius of curvature is increased significantly, the contact stress is reduced and the lubricating oil film is formed more easily, so it has the bearing capacity, the contact strength and the friction reduction and wear resistance. Mechanical efficiency and use persistence, and so on, has the very remarkable, the big enhancement. In this paper, four constraint conditions which must be satisfied in the scale synthesis of negative radius type oscillating push rod disc cam mechanism are studied and analyzed, such as motion connectivity condition, transmission performance condition, motion fidelity condition and contact strength condition. Based on the four constraints, the concrete and quantitative parameter representation of the object mechanism scale synthesis is established. Taking the specific mechanism configuration and basic size as an example, the following works are carried out and completed: (1) the configuration of the negative radius type oscillating push rod disk cam mechanism is introduced comprehensively and systematically, and the conditions of motion connectivity are studied and analyzed. The constraint and influence of transmission performance condition, motion fidelity condition and contact strength condition on the size of the negative radius type swinging push rod disc cam mechanism are derived, and the corresponding expressions of each constraint condition are derived. The reasonable and effective ways to solve the simple and combined problems such as the condition of motion connectivity, the condition of transmission performance, the condition of motion fidelity and the condition of contact strength are explored. The optimal design ideas of various configuration mechanisms are given, and the design constraints are synthetically satisfied. Based on the analysis and synthesis, a scale synthesis software of negative radius type oscillating push rod disk cam mechanism is developed based on the analysis and synthesis of compact (optimal size) cam mechanism. Based on the analysis and study of the scale synthesis of the negative radius type swinging push rod disk cam mechanism, the characteristics of the negative radius type swing push rod disk cam mechanism and the influence of the constraint conditions on the mechanism scale are obtained by combining the software. In this paper, the coupling and restriction relations between the constraint conditions in the scale synthesis process of the negative radius type swing push rod disc cam mechanism are explored and clarified.
【学位授予单位】：集美大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TH112.2

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