Precise linear motion platform driven by external thread piezoelectric actuator and method thereof

• Main Authors: JIA BOTAO, AN HAITAO, WANG LIANG, WANG RUIJUN
• Format: Patent
• Language: Chinese; English
• Published: 12.04.2024
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERATION

The invention discloses a precision linear motion platform driven by an external thread piezoelectric actuator and a method thereof. The precision linear motion platform comprises a shell, a metal base, first to fourth piezoelectric ceramic pieces, a driving nut, a rolling bearing, a linear bearing, a guide rod and a connecting seat. The external thread piezoelectric actuator is used for direct driving, a stepping motor, a speed reducer and a lead screw of a traditional precise linear motion platform are replaced, device assembling parts are greatly reduced, the structural complexity is effectively reduced, and the structural function integrated design is achieved; high-precision positioning and cross-scale positioning can be achieved, macro-micro composite motion can be achieved, and the device is wider in application scene and higher in applicability. 本发明公开了一种基于外螺纹压电作动器驱动的精密直线运动平台及其方法，装置包含壳体、金属基座、第一至第四压电陶瓷片、驱动螺母、滚动轴承、直线轴承、导向杆和连接座。本发明利用外螺纹压电作动器直接驱动，代替了传统精密直线运动平台的步进电机、减速器以及丝杠，大大减少了了装置装配部件，有效降低了结构复杂度，实现了结构功能一体