用滚珠丝杠、螺母驱动工作台时,丝杠一般有数十微米的径向跳动,直接影响了工作台的运动精度。为此,日本三丰开发了如图所示的浮动螺母机构。在该机构中,定位板A固定在工作台上。螺母D上装有两个圆术销E,D连同E可相对于内框B在水平面内作微量移动,补偿滚珠丝杠在水平面内的径向 Ball screw, nut drive table, the screw generally dozens of microns radial runout, a direct impact on the workbench movement accuracy. To this end, Japan’s Sampoong developed a floating nut as shown in the figure. In this mechanism, the positioning plate A is fixed on the workbench. Nut D is equipped with two round E, D with E relative to the inner frame B in the horizontal plane for a small amount of movement to compensate for the ball screw in the horizontal plane radial