一种动静压电主轴
By using a dynamic-static piezoelectric spindle structure and the combination of a hydrostatic lubricating oil film and an elastic thrust ring, the axial displacement problem of the electric spindle during high-speed operation is solved, achieving high rigidity and high-precision positioning of the spindle and improving machining stability and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 浙江杰克智能装备有限公司
- Filing Date
- 2026-05-18
- Publication Date
- 2026-07-17
AI Technical Summary
When existing electric spindles operate at high speeds, the axial clearance between the spindle shoulder and the bearing causes axial displacement of the spindle, affecting machining accuracy and stability.
The spindle adopts a dynamic-static piezoelectric structure. By setting a boss and a cavity on the end face of the front bearing and using an annular groove to connect the cavity to form a static pressure lubricating oil film, combined with the elastic connection between the rear bearing and the thrust ring and the external oil supply system, it achieves zero-backlash preload and static pressure support, eliminating axial clearance.
It effectively suppresses spindle axial displacement, improves axial stiffness and positioning accuracy, enhances dimensional accuracy and surface quality in grinding, and strengthens machining stability.
Smart Images
Figure CN122184419B_ABST