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目前,摆线针轮减速器的核心零件——摆线轮均采用GCr15轴承钢制造(简称钢摆),其材料较贵,热处理等工艺要求甚高,限制了整机成本的进一步降低,影响了这种减速机的竞争能力。本文分析了摆线轮齿面的接触受力情况,指出:(1)齿面与针齿套之间存在着柔性冲击和滑动摩擦,认为接触处完全为纯滚动的认识是不够全面的。(2)齿面滑速并不高,一般不大于2m/s。(3)齿面接触应力也不高,处于球墨铸铁可能承受的范围内。从接触强度、耐磨性、传动效率、冲击噪音、工艺性等方面考虑,本文提出以铸铁摆线轮(简称铸摆)代替钢摆的技术方案。通过多年的研讨与对比试验证实:(1)铸摆经一般常规的热处理方法后,其接触强度足够。(2)铸摆齿面比钢摆更耐磨。(3)铸摆传动效率略高于钢摆,且传动噪音低于钢摆。是一种值得大力推广的实用专利技术。
At present, the cycloidal reducer core parts - cycloid wheels are made of GCr15 bearing steel (referred to as the steel pendulum), the more expensive materials, heat treatment and other processes require very high, limiting the overall cost further reduce the impact The competitiveness of this reducer. This paper analyzes the contact force of the cycloid gear tooth surface, points out: (1) There is a flexible impact and sliding friction between the tooth surface and the needle gear sleeve, and the understanding that the contact point is completely pure rolling is not comprehensive enough. (2) tooth surface slip speed is not high, generally not more than 2m / s. (3) tooth surface contact stress is not high, in ductile iron may be within the scope of. From the aspects of contact strength, wear resistance, transmission efficiency, impact noise, processability and so on, this paper proposes a technical scheme of replacing steel pendulum with cast iron cycloidal wheel (referred to as casting pendulum). Through years of research and comparative tests confirmed: (1) casting pendulum by conventional heat treatment method, the contact strength is sufficient. (2) casting pendulum tooth surface wear more wear-resistant than steel. (3) casting pendulum transmission efficiency slightly higher than the steel pendulum, and the transmission noise is lower than the steel pendulum. Is a practical patented technology worth promoting.