【摘要】 针对传统空气静压主轴无法调节气浮间隙以应对不同运转状态或外载作用的问题，设计了一种空气静压主轴气浮间隙调节机构，采用压电微位移放大机构促动实现气浮间隙的主动调节。通过理论推导与仿真对设计的压电微位移放大机构及整体气浮间隙调节机构进行研究分析，并研制了样机进行实验。实验结果表明，在驱动电压为120 V时，所设计的压电微位移放大机构输出位移达518.739μm,气浮间隙调节机构相应输出位移可达189μm,响应时间约为0.38 s。更多还原

【Abstract】 This paper proposes a design for aerostatic gap adjustment to address the limitation of traditional aerostatic spindles being unable to adjust the aerostatic gap to accommodate various operational states or external loads. A piezoelectric micro-displacement amplification mechanism is employed as the actuator to adjust the aerostatic gap. Theoretical derivations and simulations are conducted to analyze both the designed piezoelectric micro-displacement amplification and overall aerostatic gap adjustment mechanisms. An experimental prototype is developed and tested. The experimental results indicate that the output displacement of the designed piezoelectric micro-displacement amplification mechanism is 518.739 μm at a driving voltage of 120 V, and the corresponding output displacement of the aerostatic gap is 189 μm with a response time of approximately 0.38 s.更多还原