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Characteristics Of Rotating Drives
- Jul 10, 2017 -



The rotary drive includes a precision bearing fixed on the fixed plate, an output shaft mounted in the inner ring of the precision bearing, a clamping mechanism, a first drive mechanism, and a second drive mechanism arranged on the inner end of the output shaft cycle. A piezoelectric ceramic actuator, a first piezoelectric ceramic actuator, and a second piezoelectric ceramic actuator are respectively mounted on the clamping mechanism, the first drive mechanism and the long shaft of the second driving mechanism, and the center of the output shaft is on the short axis of the clamping mechanism, The center of the output axis is not on the short axis of the first drive mechanism and the second drive mechanism; The invention also discloses a drive method of the actuator; Rotary Actuators The invention converts the linear displacement of the piezoelectric ceramic actuator output into angular displacement and realizes the rotation of the driving device through the coordinated stepping of a plurality of piezoelectric ceramic actuators, and simultaneously has the characteristics of compact structure, small volume and light weight.

The rotating drive is characterized in that it includes a precision bearing (8) fixed on a fixed backplane (9), an output shaft (7) Rotary Actuators mounted in the inner ring of the precision bearing (8), a clamping mechanism (7) arranged on the inner end of the output shaft (1) cycle, the first drive mechanism (3) and the second drive mechanism (5) are respectively installed in the clamping mechanism (1), the first drive mechanism (3) and piezoelectric ceramic actuators (2) and first piezoelectric ceramic actuators (4) for clamping on long shafts in second drive mechanism (5) and a second piezoelectric ceramic actuator (6), the outer end of the clamping mechanism (1), Rotary Actuators the first driving mechanism (3) and the second driving mechanism (5) is fixed on the driving housing (10), and the center of the output shaft (7) is on the short axis of the clamping mechanism (1), the center of the output shaft (7) is not on the short axis of the first drive mechanism (3) and the second driving mechanism (5); Piezoelectric ceramic Actuator (2), first piezoelectric ceramic driver (4) and second piezoelectric ceramic actuator (6) The clamping mechanism (1) and the long shaft of the first driving mechanism (3) and the second driving mechanism (5) is deformed, and the deformation will shorten the length of the short shaft, thereby making the clamping mechanism (1), the first drive mechanism (3) and the second drive mechanism (5) out of contact with the output shaft 7, and the clamping mechanism (1) and the first drive mechanism are respectively used in the clamping device (2), Rotary Actuators the first piezoelectric ceramic actuator (4) and the second piezoelectric ceramic drive (6). 3) and the second drive mechanism (5) Restore the original length, contact the output shaft (7) to exert force on the output shaft (7).

Combined with the advantages of piezoelectric ceramic material and its good linearity, a new type of piezoelectric precision rotary actuator is designed and developed, which uses piezoelectric stack element as 2 mechanical conversion mechanism to realize the clamping and driving effect of the rotor through flexible hinge. In addition, because the rotor has no winding structure, Rotary Actuators the drive can be started at any position, and the large stroke on the entire circumference is rotated. The driver prototype was designed and developed, and the experimental research was carried out from the aspects of rotational motion, rotation resolution and motion stability of the actuator.