The invention provides a clamping force-adjustable tangential driving type rotary inertial piezoelectric
actuator and a method. The
actuator is composed of a base, a bearing, a piezoelectric stack, arhombic ring, an elastic element, a bearing
gasket and a screw, wherein the bearing
gasket and the screw are required for
assembly and adjustment. A rhombic ring driving mechanism drives the bearing to rotate through the outer ring of the bearing fixed on the base by means of a friction inner ring. The outer ring of the bearing is connected with a shell through the bearing
gasket so as to output the rotating motion. The
friction force between a rhombic ring friction block and the outer ring of the bearing is a clamping force. The elastic element is extruded by adjusting the screw so as to generate the deformation. Through changing the
positive pressure between the rhombic ring friction block and the outer ring of the bearing, the clamping force can be adjusted. Through arranging strain gauges on the surface of the elastic element, the size of the clamping force of the
actuator can be accurately obtained. According to the invention, the bearing is driven to rotate in the tangential direction, and the function of measuring and adjusting the clamping force is realized. A through hole is formed in the structure, and the clamping force-adjustable tangential driving type rotary inertialpiezoelectric actuator has important application in the field of
optics. The clamping force-adjustable tangential driving type rotary inertial piezoelectric actuator is compact in structure and easy to assemble. The clamping force-adjustable tangential driving type rotary inertial piezoelectric actuator has the advantages of
high resolution, infinite travel and stable actuation performance.