论文部分内容阅读
凸轮是月壤采样冲击机构的关键零件。通过冲击机构寿命试验发现,凸轮防扭轴存在出现疲劳破坏的风险。基于冲击机构多体动力学仿真、静力学分析和瞬态力学分析,对凸轮进行优化设计,并通过对凸轮材料热处理工艺进行分析,采用更加合理的热处理手段。在论证充分和工艺成熟的基础上,冲击机构所有优化均以变动量最小、系统安全可靠、驱动功耗小和机构轻量化设计为原则。通过仿真分析和试验验证表明,优化后的冲击机构满足功能性能指标要求及寿命要求,优化措施有效。
The cam is the key component of the lunar sampling impact mechanism. Through the impact mechanism life test found that cam anti-torsion shaft there is the risk of fatigue damage. Based on multi-body dynamic simulation of impact mechanism, static analysis and transient mechanics analysis, the optimal design of the cam is carried out. The heat treatment of the cam material is analyzed and a more reasonable heat treatment method is adopted. On the basis of full demonstration and mature technology, all the optimization of impact mechanism is based on the principle of minimum variation, safe and reliable system, small power consumption and lightweight design. Through the simulation analysis and experimental verification, it shows that the optimized impact mechanism meets the functional performance requirements and life expectancy, and the optimization measures are effective.