Xiangtan University Team Achieves Breakthrough in Precision Machining of Robot Joint Components
Quick Look
- A team led by Professor Peng Ruitao at Xiangtan University has made a significant breakthrough in the efficient and precise processing of large-pitch Gothic-arch ball screws, a core transmission component for humanoid robot joint actuators.
- Their research addresses challenges in dry hard turning, offering a greener and more efficient manufacturing method.
AI-generated summary
Why It Matters
The performance of ball screws, critical transmission components in humanoid robot joints and other high-end equipment, directly affects the overall machine's dynamic response and service life. Traditional grinding processes for these components are inefficient, costly, and consume large amounts of cutting fluid, hindering green and efficient manufacturing.
中新网湘潭6月4日电 (记者 徐志雄)记者4日从湘潭大学获悉，该校华锐先进制造研究院彭锐涛教授团队，在人形机器人关节执行机构核心传动部件——大导程哥特式圆弧滚珠丝杠的高效精密加工方面取得重要突破。
哥特式圆弧螺纹滚道硬车削机制示意图。 彭锐涛团队供图
彭锐涛团队相关研究揭示了大导程滚珠丝杠干式硬车削过程中，由几何约束诱发的材料去除、表层损伤与刀具磨损耦合机制，为破解该类高端精密传动部件“以车代磨”绿色高效制造的关键技术难题，提供了系统的理论依据与工艺参考。
“滚珠丝杠作为人形机器人关节执行机构及工业机器人等高端装备的关键精密传动部件，其性能直接影响整机的动态响应与服役寿命。”彭锐涛表示，大导程哥特式圆弧滚珠丝杠虽兼具高传动效率与高承载能力的优势，但其复杂的螺旋曲面结构在加工中极易引发刀具干涉、摩擦挤压、热积累及表层损伤等一系列科学难题。而传统磨削工艺长期受困于效率低下、成本高昂、切削液消耗大等行业瓶颈，严重制约了高端精密传动部件的绿色化与高效化制造。
针对以上关键科学问题与行业技术难题，彭锐涛团队以淬硬大导程哥特式圆弧滚珠丝杠滚道的干式硬态车削为研究对象，系统揭示了大导程几何约束对滚道表面完整性、亚表层损伤及刀具磨损行为的内在影响机制。
同时，团队紧扣高端动力装备制造领域的共性技术难题，持续在难加工材料高效去除、刀具与磨具失效机理、冷却润滑协同强化、表面完整性调控及复杂曲面成形等核心方向开展系统攻关，逐步构建起从机理认知、工艺优化到工程验证的完整研究体系，并获得国家自然科学基金等项目资助。
目前，相关研究成果以《大导程哥特式拱形滚珠丝杠干硬车削过程中几何诱导的耦合效应对材料去除及损伤机理的影响》(Geometrically Induced Coupling Effects on Material Removal and Damage Mechanisms during Dry Hard Turning of Large-Pitch Gothic-Arch Ball Screws)为题，发表于制造工程领域国际权威期刊《制造工艺期刊》(Journal of Manufacturing Processes)(中科院一区TOP期刊，影响因子6.8)。彭锐涛为论文第一作者兼通讯作者，湘潭大学为第一完成单位，株洲华锐精密工具股份有限公司为合作单位。(完)
Open Questions
- What is the specific improvement in efficiency and cost reduction achieved by this new method compared to traditional grinding?
- What are the potential applications beyond humanoid robots?
- What is the timeline for commercialization or wider adoption of this technology?
- Are there any limitations or specific material constraints for this dry hard turning process?
