【作者】 徐峰；

【导师】 葛正浩；

【作者基本信息】 陕西科技大学 ， 材料加工工程， 2007， 硕士

【摘要】 本文以空间凸轮为研究对象,从工程实际出发,以三坐标测量机和计算机运动仿真技术为工具,对空间凸轮的精密测量方法、从动件的运动规律反求方法及廓面误差检测方法进行了较深入的理论分析和实验研究。对空间凸轮机构及其运动规律进行了分析和研究。介绍了空间凸轮机构的常用类型、空间凸轮轮廓设计、压力角简化算法及常用运动规律。为空间凸轮的精密测量、从动件运动规律反求及误差检测研究奠定了基础。重点研究了空间凸轮的精密测量问题。提出了一种空间凸轮快速、精密测量方法及测球半径补偿方法,系统地论述了该测量方法的原理,给出了测球半径补偿的数学表达式,并基于WinMeil平台编制了可实现实时测球半径补偿的空间凸轮专用测量程序。解决了空间凸轮快速、精密测量的难题,为空间凸轮机构从动件运动规律的反求及轮廓误差检测奠定了基础。详细探讨了空间凸轮机构从动件运动规律反求问题。提出了一种基于计算机运动仿真的运动规律反求方法,并详细探讨了该方法的理论基础,推导出了从动件运动规律的数学表达式。计算机仿真技术的高效性与精确性保证了本方法能够实现空间凸轮机构从动件运动规律的快速、准确反求。该方法的提出为空间凸轮机构从动件运动规律的反求设计提供了新思路,同时也为其它机构的正向与逆向设计指明了新方向与新方法。系统分析了空间凸轮轮廓误差检测问题。以空间凸轮的精密测量为基础,提出了一种简单实用的空间凸轮轮廓误差检测方法,并讨论了数据匹配问题。最后,以此作为理论基础,采用Visual C++ 6.0作为开发工具,编制了空间凸轮轮廓面加工误差检测软件。基于上述空间凸轮精密测量方法、运动规律反求方法及轮廓面误差检测方法的研究结论,分别进行了实验验证及分析。实验结果表明,上述方法正确可行。证明了本文所提出的理论及方法的正确性,具有重要的理论意义和实际应用价值。更多还原

【Abstract】 Focusing on the spatial cams, the dissertation, starting with the practical processing, analyzes and experiments research the precision measurement for spatial cams, the reverse design of follower motion specifications and contour error inspection of spatial cams deeply by coordinate measure machine and emulation.The spatial cam mechanisms and their motion speciation are analyzed and studied intensively. The commonly used spatial cam mechanisms, the design of spatial cam contours, the simplified algorithm of pressure angle and commonly used motion speciation are presented. The groundwork is established for the study of the precision measurement for spatial cams, the reverse design of follower motion specifications and the error inspection of spatial cams.The exact measurement method for spatial cams is studied intensively. A kind of exact measurement method for spatial cams and probe-radius compensation method are presented in this dissertation, and the principle of this measurement method is discussed in detail. A specified measure program that can realize real-time probe-radius compensation is also programmed via WinMeil. The groundwork is established for the reverse design of follower motion specification for spatial cam mechanisms and the error inspection of spatial cams, and the measure puzzle for spatial cams is also solved.The reverse design of follower motion specification for spatial cam mechanisms is studied in detail. A new kind of reverse design method for spatial cam follower motion specification via motion simulation is provided. Its theoretical foundation is discussed in detail, and the expression of the follower motion specification is calculated. The high efficiency and exact of emulation technology ensures that this method can realize reverse design of spatial cam follower motion specifications rapidly and accurately. This method provides a new train of thought for the reverse design of spatial cam follower motion specifications, and points out new directions and methods of design and reverse design for other mechanisms in the same time.The contour error inspection of spatial cams is studied systematically. A simple and applied error inspection method for spatial cams is provided based on the exact measurement of spatial cams, and the data mating is also studied. At last, on the base of this, an error inspection program for spatial cams is programmed using Visual C++ 6.0.Based on the achievement of the exact measurement of spatial cams, the reverse method of motion specifications and the contour error inspection of spatial cams, each experiment and analysis are done. The results show that this technology is correct and feasible. Thereby, the theory and methods proposed in this dissertation are correct and have important theoretical and actual value.更多还原