A Harmonic Reducer

Abstract

The invention discloses a harmonic reducer, which belongs to the field of mechanical transmission mechanisms. The harmonic reducer includes a rigid spline, a flex spline and a wave generator. The flex spline has an inner mating surface and an outer mating surface. The wave generator has a transmission part. One end of the wave generator is inserted into the flex spline. Then, the rigid wheel is set outside the flexible wheel, and the rigid wheel is in contact with the outer mating surface. The wave generator is provided with a first inner cavity, and the transmission part is provided with a first flow hole communicating with the first inner cavity; the rigid wheel is provided with In the second inner cavity, the inner wall of the rigid wheel is also provided with a second flow hole communicating with the second inner cavity; the first inner cavity and the second inner cavity are suitable for passing into a fluid lubricating medium; the harmonic speed reducer of the present invention can Good lubricating effect is realized through the first inner cavity, the first flow hole, the second inner cavity and the second flow hole.

Description

technical field [0001] The invention relates to a mechanical transmission mechanism, in particular to a harmonic reducer. Background technique [0002] At present, in high dynamic performance servo systems, or in aerospace equipment, robots, machine tools, instruments, electronic equipment, lifting equipment and other mechanical equipment, harmonic reducers are often used as transmission mechanisms. The harmonic reducer is a transmission method that relies on the elastic deformation of the flexible gear to transmit force and motion. The general harmonic reducer is composed of three components: the flexible wheel, the rigid wheel and the wave generator; usually, the rigid wheel is fixed , the wave generator is an elliptical component, installed inside the flexspline, forcing the flexspline to produce radial deformation at the end of the long axis into an ellipse according to certain rules. When the wave generator is driven to rotate, the flexible spline is forced to continuo...

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Problems solved by technology

[0003] In the existing technology, in order to ensure the normal operation of the harmonic reducer, it is generally necessary to directly add grease between the rigid wheel and the flexible wheel, and between the flexible wheel and the wave generator to meet the lubrication needs of the harmonic reducer; However, the lubricating grease required by the harmonic reducer generally needs to be specially customized, and the temperature range that the current lubricating grease used in the harmonic reducer can support is small. When the temperature of the harmonic reducer is too high, the lubrication of the grease The effect is very easy to fail, and it is easy to cause insufficient lubrication of the harmonic reducer, which greatly increases the wear of the harmonic reducer and reduces the life; in addition, the existing harmonic reducer that uses grease to achieve the lubrication effect is increasing When lubricating grease, it is necessary to disassemble the harmonic reducer to realize the filling of lubricating grease, which is troublesome to operate

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