principle(滚环驱动原理)
are non positive drives which convert the constant rotation of a plain round shaft into reciprocating motion.they operate like nuts on a threaded bar ,however the pitch both left-hand is capable of fine adjustment or can be set at zero(滚圈驱动器是不积极的驱动器,不断旋转的能量转换纯轴向往复运动。他们操作螺母螺纹杆,然而在球场左边能够微调或可以设置为零)
this effect is achieved by using ball bearing based rolling rings which are designed to pivot about the shaft,their specially crowned running surfaces being pressed against the shaft as it rotates.( 这种效应是通过使用基于滚珠轴承的滚动环的设计主轴,他们专门加冕运行表面被压在轴旋转。)
principle(滚环驱动原理)
