RV reducer comprising constant-depth tooth spiral bevel gear

Abstract

The invention relates to a reducer, in particular to an RV reducer comprising a constant-depth tooth spiral bevel gear. One end of a pin gear casing is provided with an input planet carrier and the other end is provided with an output planet carrier; the input planet carrier and the output planet carrier are constructed to rotate within the pin gear casing after being fixedly connected; the internal wall of the pin gear casing is provided with a rolling pin; a pair of cycloidal gears are arranged between the input planet carrier and the output planet carrier and are constructed to be engaged with the rolling pin; a planetary gear is arranged on the output planet carrier; the center of the output planet carrier is provided with an input shaft which is engaged with the planet gear; the central shaft of the planet gear is provided with a crank shaft; the crank shaft is constructed to rotate on the input planet carrier and the output planet carrier; the pair of cycloidal gears are hinged to the crank shaft; the input shaft drives the crank shaft through the planet gear; the crank shaft drives the pair of cycloidal gears; the pair of the cycloidal gears drive the output planet carrier. The RV reducer comprising the constant-depth tooth spiral bevel gear is small in noise, high in first-level transmission contact ratio, stable in transmission, uniform in stress, compact in structure and can obtain small elasticity backlash.

Description

technical field [0001] The invention relates to a speed reducer, in particular to an RV speed reducer for industrial robots containing a constant-height spiral bevel gear. Background technique [0002] As a new transmission form, the RV transmission developed on the basis of the traditional needle pendulum planetary transmission not only overcomes the shortcomings of the general needle pendulum transmission, but also has the advantages of small size, light weight, large transmission ratio range, long life and high precision. With a series of advantages such as stability, high efficiency, and smooth transmission, it has increasingly attracted widespread attention at home and abroad. The RV reducer is composed of a cycloidal pin wheel and a planetary bracket. It is widely used in industrial robots, machine tools, and medical testing due to its small size, strong impact resistance, large torque, high positioning accuracy, small vibration, and large reduction ratio. Equipment, ...

AI Technical Summary

Problems solved by technology

[0003] At present, the robot RV reducer adopts two-stage deceleration. Among them, the first-stage deceleration is composed of the input shaft and the planetary gear, which is an involute spur gear transmission. This type of transmission is a line contact, which is highly sensitive to installation errors and prone to meshing. In and out impacts, resulting in unstable transmission, resulting in noise and transmission errors

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