Electrodeless speed reduction device and working method thereof

Abstract

The invention discloses an electrodeless speed reduction device and a working method thereof. The electrodeless speed reduction device comprises an external rotation shaft, a bearing end cover, a bearing, a friction disc, an end cover, ultrasonic transducers, braking discs, transmission nuts, a rotary ultrasonic motor, a box body cover, a key, friction materials and a box body, the rotary ultrasonic motor is connected to a lower part of the box body, the transmission nuts are in threaded matching with an output shaft of the rotary ultrasonic motor, guide grooves are formed in two sides of the braking discs, a guide sliding rail is arranged on an inner wall of the box body, the ultrasonic transducers are uniformly arranged along circumferential directions of the braking discs, the external rotation shaft is inserted to the bearing from top to down and is limited by a shaft shoulder, protruding steps at an upper end of the friction disc is in contact with an inner ring of the bearing for limitation, a torque is transferred by the key, the end cover is arranged at a lower end of the friction disc, and the electrodeless speed reduction device is completely fixed on the external rotation shaft by threads. Electrodeless speed reduction is achieved by combination of macroscopic and microcosmic control, and the electrodeless speed reduction device has the advantages of small size, no electromagnetic interference, continuous and adjustable speed change and fast response time, and is easy to process, assemble, use and control.

Description

technical field [0001] The invention belongs to the technical field of stepless speed reduction devices, and specifically refers to a stepless speed reduction device with a rotary ultrasonic motor-ultrasonic transducer macro-micro combination and a working method thereof. Background technique [0002] With the continuous advancement of science and technology, the design of new reducers requires miniaturization and high precision. Such a development trend makes the defects of existing reducers more and more obvious, such as complex structure, bulky size, low transmission accuracy, and impact resistance. Ultrasonic motor is a new type of micro-motor using the inverse piezoelectric effect of piezoelectric ceramics and ultrasonic vibration. It has the characteristics of simple structure, compact design, flexible design, low-speed high-torque output, fast response, good control performance, and self-locking when power is off. , It has been widely used in industry, national defen...

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Problems solved by technology

[0003] Aiming at the deficiencies of the above-mentioned prior art, the object of the present invention is to provide a stepless speed reducer and its working method, so as to solve the problems of the reducer in the prior art, such as complex structure, bulky volume, low transmission precision, and resistance to stamping, etc. The present invention realizes stepless deceleration through the combination of macroscopic and microscopic control, the deceleration device is small in size, easy to process, assemble and use, without electromagnetic interference, the speed change is continuously adjustable, and the response time is fast and easy to control

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