Double-wave-line ball deceleration bearing with high rotary precision

Abstract

The invention discloses a double-wave-line ball deceleration bearing with high rotary precision. The bearing comprises an input shaft, wherein the input shaft comprises a first mounting part, an eccentric part and a second mounting part sequentially connected in the axial direction; a first shell is movably arranged on the periphery of the first mounting part in a sleeving manner; an annular avoiding groove is formed in the first shell; a driving disc is movably arranged on the periphery of the eccentric part in a sleeving manner and is positioned in the avoiding groove; a ball mechanism is arranged between the driving disc and the inner end face of the avoiding groove; a second shell is movably arranged on the periphery of the second mounting part in a sleeving manner; a hypocycloid groove is formed in the second shell; an epicycloid groove is formed in the driving disc; the wave number of the hypocycloid groove is greater than that of the epicycloid groove; and a plurality of first balls are distributed between the hypocycloid groove and the epicycloid groove. The invention aims to provide the double-wave-line ball deceleration bearing which can increase the reduction ratio and reduce the wear loss, is small in error and transmission ratio error, and has multiple output modes.

Description

Technical field [0001] The invention relates to the field of reduction bearings, in particular to a double wave line ball reduction bearing with high rotation accuracy. Background technique [0002] In the production process of mechanical equipment, it is necessary to adjust the rotation speed ratio of the two stages through a reducer to decelerate the high-speed rotation of the upper equipment to obtain a larger torque. The existing reduction bearing generally uses gear meshing for transmission, and the reduction effect is achieved through the tooth difference generated between the gear and the gear. With the improvement of automation, in the same production line, it is often necessary to use multiple reduction bearings, and the use of gear meshing reduction bearings, during the transmission process, the sliding friction between the gear and the gear will cause great mechanical loss. When a certain link of the reduction bearing fails, it is easy to affect the production efficie...

AI Technical Summary

Problems solved by technology

With the improvement of automation, in the same production line, it is often necessary to use multiple reduction bearings, and the reduction bearings with gear meshing will cause great mechanical loss due to the sliding friction between the gears during the transmission process. When the deceleration bearing in a certain link fails, it is easy to affect the production efficiency of the entire production line

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