eccentric positive return cam 偏心确动凸轮

main-and-return cam 主凸轮与回凸轮

main and return cam 强力回程凸轮

positive return cam 确动凸轮

sear return cam 阻铁复位凸轮

rear return cam 后转向凸轮

ejector-return cam 脱模销回程凸轮

main return cam mechanism 主回凸轮机构

Cam angle for return 回程角