Transmission electric chuck for planetary gear driven by hydraulic motor

Abstract

The invention discloses a transmission electric chuck for a planetary gear driven by a hydraulic motor. A fixed internal gear and a driven internal gear are provided with corresponding addendum circles, and the fixed internal gear and the driven internal gear are correspondingly replaced; and the tooth number difference of the fixed internal gear and the driven internal gear is 2, a planetary gear is fixedly installed on a planetary gear framework through the fixed internal gear and the planetary gear is engaged with the fixed internal gear. A hydraulic motor is connected with the planetary gear framework through a shaft coupling, and the driven internal gear is fixedly provided with a helical gear through a bearing; meanwhile, the driven internal gear is guaranteed to be engaged with the planetary gear and a jaw is installed in the helical gear. According to the invention, helical teeth of the chuck are driven by the planetary gear with double tooth differences and driven by the hydraulic motor so as to overcome the following defects of the traditional transmission electric chuck of planetary gear with small tooth difference: structure complexity, failure easiness, low transmission efficiency and easiness in causing accident due to overload.

Description

technical field [0001] The invention relates to a transmission mechanism of an electric chuck in the technical field of metal cutting machine tool accessories, in particular to an electric chuck driven by a hydraulic motor and driven by a planetary gear. Background technique [0002] In order to improve work efficiency, at present, some metal processing machine tools are generally equipped with electric chucks. At present, the transmission mode of electric chucks mainly adopts the motor as the driving force and the planetary gear transmission with small tooth difference. Although this transmission method has the advantages of simple and compact mechanism, because the planetary gear needs to use two gears with different numbers of teeth, there are limitations in that the number of parts is relatively large and the structure is complicated. In addition, due to the poor overload protection performance of the motor, it is easy to cause accidents due to overload. Contents ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a hydraulic motor-driven planetary gear transmission electric chuck, which overcomes the existing motor-driven electric chucks with small tooth difference planetary gear transmission: complex structure, easy failure, low transmission efficiency Low, easily overloaded and accident-prone margin

Because the present invention uses the two-tooth difference planetary gear driven by the hydraulic motor to drive the helical teeth of the chuck, it overcomes the existing problems of the existing electric chuck with small tooth difference planetary gear transmission: complex structure, easy failure, and low transmission efficiency. Low, easily overloaded and accident-prone margin

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