近年来,为适应数控进给系统刚度和定位精度方面的要求,并利于元部件的专业化生产,双螺母滚珠丝杠副倾向于采用“内部于加负荷”的形式(简称“内予紧”)。它要求制造厂在产品出厂前根据用户需要,在施行滚珠丝杠副“跑合”之后,调节至所需要的予紧力,而用户勿需拆卸调整就可直接 In recent years, to meet the CNC feeding system stiffness and positioning accuracy requirements, and conducive to the specialized production of components, double nut ball screw tend to adopt the “internal load” form (referred to as “tight inside” ). It requires manufacturers in the factory according to user needs, after the implementation of the ball screw pair “run together” to adjust to the required preload, and users do not need to disassemble and adjust directly