Development of Nutation Motors

2nd Report, Development of Practical Model by the OF Type Bevel Gears and Diaphragm

Abstract

In this paper, we report a new type of nutation motor, named the OFD type pneumatic nutation motor consisting of a diaphragm which has some pneumatic rooms, a nutant bevel gear and a fixed bevel gear. Injecting air into each pneumatic room sequentially causes nutation of the nutant bevel gear, which makes the output shaft to rotate through the universal joint and spherical bearing. In this report, first, the driving principle and design of this motor are presented. Next, the prototype of the OFD type pneumatic nutation motor is fabricated and tested. As a result, it is demonstrated that the OFD type nutation motor is (1) small-sized, (2) simple structure and (3) highly durable.