Integrated machining method of planet carrier of robot RV reducer

Abstract

The invention discloses an integrated machining method of a planet carrier of a robot RV reducer, and belongs to the technical field of robot RV reducer machining. The method comprises the steps as follows: forging a first casing and a second casing, and performing hot extrusion on the first casing and the second casing respectively; performing thermal refining; performing tempering; performing finish machining on end surfaces respectively; connecting the first casing with the second casing to be clamped to a clamp, and performing finish machining on inner holes formed in the first casing and the second casing with a center of gyration serving as a locating basis; performing finish machining on outer surface with the locating basis; directly machining inner rings of rolling bearings on the first casing and the second casing; accurately grinding an outer track on each inner ring simultaneously; and performing finish machining bearing positions of three tapered roller bearings on the first casing and the second casing with the location reference, and directly machining outer rings of the tapered roller bearings. With the adoption of the method, the mounting accuracy, the manufacturing accuracy and the transmission accuracy are ensured, the requirement for high accuracy is met, the service life is prolonged, machining and assembling errors and accumulative errors are reduced, the output torque is increased, and the machining cost is effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of processing a robot RV reducer, and in particular relates to a processing method for integrating a planet frame of a robot RV reducer. Background technique [0002] The robot RV reducer has the advantages of small size, light weight, stable transmission, no impact, no noise, high motion precision, large transmission ratio, high bearing capacity, etc., and is widely used in electronics, aerospace, robotics and other industries. The robot RV reducer has a complex structure, including a pinion housing, a planetary gear carrier, three crankshafts, a cycloidal wheel, and three pairs of tapered needle roller bearings installed between the crankshaft and the planetary gear carrier, and eccentrically mounted on the crankshaft The three pairs of bearings between the wheel and the cycloidal wheel, and the two pairs of bearings installed between the pinion housing and the planetary gear frame, in order to achieve the...

AI Technical Summary

Problems solved by technology

With this positioning installation method, the processing and installation process is complicated, not only the installation accuracy of the tapered roller bearing cannot be guaranteed, but also the position and coaxiality of the crankshaft on the first housing and the second housing cannot be guaranteed.

[0003] At the same time, the current processing method for the first shell and the second shell is to carry out finishing machining separately, and then set rolling bearings on the periphery of the first shell and the second shell respectively. With this processing and installation method, during the finishing process Processing errors will occur, and installation errors will occur during the installation of bearings, thereby increasing the cumulative error, resulting in low precision of the robot RV reducer, and affecting the service life

Therefore, the importance of the machining accuracy requirements and assembly accuracy requirements of the planet carrier can be imagined. At present, the planet carrier that meets this requirement cannot be manufactured in China, and most of them rely on imports.

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