Supporting structure of ball screw assembly

Abstract

The invention discloses a supporting structure of a ball screw assembly, which comprises a ball screw 1, a nut 2, a cross beam 3, a screw bracket 4, a screw mount 5, a speed reducer 6, a coupler 7, an anti-collision unit, a screw mount supporting structure and a screw bracket supporting structure. The nut 2 is screwed on the ball screw 1, and the screw bracket 4 and the screw mount 5 are respectively connected to two ends of the cross beam 3 and fixed to two ends of the ball screw 1. The screw mount 5 comprises a positioning surface 50, the positioning surface 50 is provided with a positioning surface through hole 51, a containing space 52 and a speed reducer connector 53, and one end of the ball screw 1 extends into the containing space 52 of the screw mount through the positioning surface through hole 51 and then is connected with an output shaft of the speed reducer 6 which extends into the containing space 52 through the speed reducer connector 53 by the aid of the coupler 7.

Description

technical field [0001] The invention relates to a screw pair structure, in particular to a ball screw pair support structure. Background technique [0002] The ball screw pair is composed of a screw and a nut. It is a further extension of the traditional sliding screw. There are many balls rolling between the screw shaft and the screw nut of the ball screw pair, which can get higher Movement efficiency. Compared with the previous sliding screw pair, the driving torque is less than 1 / 3, that is, the power required to achieve the same motion result is 1 / 3 of that of the rolling screw pair. Due to its excellent friction characteristics and remarkable features in energy saving, the ball screw pair is widely used in industrial equipment, precision instruments, CNC machine tools and other fields, and has become the most commonly used drive in transmission machinery, especially machine tool products. device. [0003] With the rapid development of industry, the processing perform...

AI Technical Summary

Problems solved by technology

In the prior art, the ball screw pairs are fixed at both ends, and the bearings are usually single-row or double-row angular contact bearings, but there are the following problems: First, the single-row angular contact ball Axial load, when subjected to radial load, it will cause two points in the axial direction to fix a shaft, because the angular contact can only fix the shaft in one direction, so it must be used symmetrically to fix a shaft; if double row angular contact balls are used The inclination between the inner and outer rings of the bearing is limited, and the allowable inclination angle depends on the internal clearance of the bearing, the bearing size, the internal design and the force and moment acting on the bearing, and the maximum allowable inclination angle should ensure that no Excessive additional stress, if there is an inclination angle between the inner and outer rings of the bearing, it will have a certain impact on the bearing, and at the same time cause the bearing's running accuracy to decrease and the running noise to increase

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