Xi'an University of Technology

Yong Yang

Yumei Huang

Xingang Yang

Hongyan Liu

A serially-connected ball screw pair and piezoelectric actuator macro-micro driving and guiding device includes, from the bottom to the top, a sliding seat (), a ball screw pair, a sliding table guide rail pairs, a nut seat (), a piezoelectric actuator (), a micro-moving table, a nut seat guide rail pairs and a sliding table (). The axis of a ball screw is symmetric with respect to two sliding table rail pairs, a nut () of the ball screw pair is fixedly mounted into the nut seat (), one end of the piezoelectric actuator () is fixedly connected with the nut seat () and the other end thereof is fixedly connected with the micro-moving table (), the axis of the piezoelectric actuator is symmetric relative to two sliding table rail pairs, an upper surface of the micro-moving table is fixedly mounted to a lower surface of the sliding table, and two nut rail pairs are symmetric relative to the axis of the ball screw. The ultra precision feeding in a long stroke within a full journey can be achieved; and the piezoelectric actuator only endures the driving force without enduring the driving torque generated by the driving force of the ball screw pair, thus, so that the piezoelectric actuator is in a good stressed status, which is applicable to a large-load ultra-precision feed system.

Serially-connected ball screw pair and piezoelectric actuator macro-micro driving and guiding device

A biaxial linear-motion micro drive apparatus includes: a mounting base A on an upper surface of a Z-direction sliding base; a Z-direction micro actuator fixed within the mounting base A and connected with a Z-direction micro-motion platform connected with an X-direction sliding base; Z-direction guide rail strips arranged on the Z-direction sliding; two Z-direction guide rail blocks provided on one Z-direction guide rail strip fixedly mounted on a lower surface of the X-direction sliding base; a mounting base B provided on an upper surface of the X-direction sliding base; an X-direction micro actuator in the mounting base B and connected with an X-direction micro-motion platform connected with an XZ biaxial motion platform; two X-direction guide rail strips arranged on the upper surface of the X-direction sliding base; two X-direction guide rail blocks provided on each X-direction guide rail strip mounted on a lower surface of the XZ biaxial motion platform.

Growing community of inventors

Xi'an, China

Yong Yang