Precision planetary reducer

Abstract

The invention provides a precision planetary reducer. The precision planetary reducer comprises a sun gear (1), a planetary carrier (2), multiple planetary gears (3) and a gear ring (4). The sun gear (1) is engaged with the planetary gears (3) arranged around the sun gear (1). Each planetary gear (3) is installed on one planetary gear shaft (5). Each planetary shaft (5) is installed on the planetary carrier (2). The planetary gears (3) are engaged with the gear ring (4). Each planetary gear shaft (5) is installed on the planetary carrier (2) through one planetary gear shaft base (7). The position of each planetary gear shaft base (7) can be adjusted in the radial direction of the planetary carrier (2). Each planetary gear shaft base (7) is clamped and limited by the planetary carrier (2) in the circumferential direction of the gear ring (4). According to the precision planetary reducer, transmission precision is very conveniently improved through assembly and adjustment, the transmission precision is high, and manufacturing cost is low.

Description

technical field [0001] The invention relates to a precision planetary reducer. Background technique [0002] The precision unit of the planetary reducer is arc minutes, and the shaft rotates 360 degrees, and one degree = 60 arc minutes. The measurement method of the accuracy of the planetary reducer is to fix the power input end of the planetary reducer, and then at the output end of the planetary reducer. Add 20% of the rated torque to the direction, and then measure the degree of rotation of the output shaft to get the accuracy of the planetary reducer. Due to the unreasonable structural design of the existing planetary reducer, its transmission accuracy is low. Generally, its accuracy can only reach 5 points to 6 points, and the best accuracy can only achieve 3 points. The planetary reducer with an accuracy of 5 to 6 points is also very difficult, requiring very experienced employees to use a large number of processed sun gears, planetary carriers, planetary gears and ri...

AI Technical Summary

Problems solved by technology

Due to the unreasonable structural design of the existing planetary reducer, its transmission accuracy is low. Generally, its accuracy can only reach 5 points to 6 points, and the best accuracy can only achieve 3 points. The planetary reducer with an accuracy of 5 to 6 points is also very difficult, requiring very experienced employees to use a large number of processed sun gears, planetary carriers, planetary gears and ring gears to carry out complicated matching and assembly operations, in order to obtain from many Select and assemble a small number of planetary reducers with an accuracy of 5 to 6 points among the components. As a result, the existing precision planetary reducers not only have low precision, it is difficult to meet the design requirements for high-precision planetary reducers in related fields, and It is difficult to carry out mass production, and the production cost is also very high

Images