Planetary involute gear reducer with small tooth difference

Abstract

The invention belongs to the technical field of reduction gears and relates to a planetary involute gear reducer with the small tooth difference. The planetary involute gear reducer with the small tooth difference comprises a body and a power transmission part. The power transmission part is installed in an inner cavity of the reducer. The power transmission part comprises an input shaft, an output shaft, an eccentric shaft sleeve, a duplex outer involute gear, an input end inner involute gear, an output end inner involute gear and a balance weight. The input shaft is mounted on the body. Theeccentric shaft sleeve is mounted on the input shaft. The duplex outer involute gear is mounted on the eccentric shaft sleeve by a rotating arm bearing. The input end inner involute gear is fixed inside the body, and the input end inner involute gear and the right end of the duplex outer involute gear are engaged to form a small-tooth-difference inner engagement involute gear pair. The output shaft is installed inside the body and protrudes from the left end of the body. The output end inner involute gear is mounted at the inner end of the output shaft, and the output end inner involute gear and the left end of the duplex outer involute gear are engaged to form a small-tooth-difference inner engagement involute gear pair. The planetary involute gear reducer has the beneficial effects of compact structure, continuous and stable transmission, no root cutting phenomenon and the like.

Description

technical field [0001] The invention belongs to the technical field of reduction devices, and in particular relates to a planetary linear gear reducer with few tooth differences. Background technique [0002] The reducer is used to reduce the speed of the prime mover and increase the torque at the same time to output the power required by the working machine. The use of the reducer greatly reduces the requirements on the motor. Reducers are widely used in various fields of industry. There are many types and each has its own advantages. They are suitable for different working conditions, such as worm gear reducers, gear reducers and planetary reducers. For ordinary gear reducers, in order to achieve a large transmission ratio, multi-stage transmission is required, which inevitably makes the structure of the reducer heavy and bulky. The planetary reducer breaks through the limitation of fixed shaft transmission, and the planetary gear makes revolution motion, which makes it e...

AI Technical Summary

Problems solved by technology

The design is complex, the assembly requirements are high, and a slight improper design or installation may cause interference between the addendum and root fillet of the internal and external gears, involute interference of the internal gear pair, tooth profile overlapping interference, and processing and manufacturing. radial interference on

During the meshing process, the relative sliding between the teeth is serious, which generates a lot of heat and loses a lot of energy

For the cycloid type reducer with small tooth difference, the tooth profile of the cycloid wheel is complicated, and the gear teeth need to be ground by special machine tools. The machining accuracy is difficult to guarantee, the machining is difficult and the cost is high, so it is mainly used in the field of precision transmission.

For the harmonic reducer, the flexible spline is a thin-walled part, the manufacturing cost is high and the process is complicated

The flexible spline continuously produces high-frequency deformation during the transmission process, which is easy to cause fatigue damage, so the service life is not long

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