Temperature-variation-resistant low-wear self-lubricating linear bearing

Abstract

The invention discloses a temperature-variation-resistant low-wear self-lubricating linear bearing. The linear bearing comprises a guide shaft, a bearing ring and balls I, wherein the bearing ring isarranged on the outer periphery of the guide shaft, the side wall of the bearing ring is provided with a plurality of round holes, the balls I are arranged in the round holes in a rolling mode, the outer periphery of the bearing ring is provided with a fixing sleeve, the fixing sleeve is provided with a plurality of elastic pressing pieces at least at the round holes, the elastic pressing pieces can make contact with the balls I, and lubricating layers are arranged on the inner wall of the bearing ring, the hole walls of the round holes and the inner surfaces of the elastic pressing pieces. The linear bearing has the beneficial effects that the linear bearing is suitable for different temperature changing environments and has the characteristics of self-lubrication and low wear, the service life of the bearing is prolonged, on the basis of above characteristics, effective fixation of the bearing on the guide shaft and detachable arrangement of a connecting flange are realized, and theapplication range of the linear bearing is broadened.

Description

technical field [0001] The invention belongs to the technical field of mechanical connecting parts, and in particular relates to a temperature-resistant and low-wear self-lubricating linear bearing. Background technique [0002] Linear motion bearings are low-cost produced linear motion systems for infinite travel in conjunction with guide shafts. The structure of the linear bearing mainly includes a retainer installed inside the outer ring. The retainer is equipped with a plurality of rolling steel balls, and the infinite circular motion in the linear direction is realized through the rolling of the steel balls. The two ends of the retainer are fixed by inner spring retaining rings, and a notch window is provided on the linear track where each steel ball works under force. This part is to make the loaded steel ball and the guide shaft make rolling contact, and relatively move with a very low friction coefficient. Therefore, linear motion bearings are the most suitable bear...

AI Technical Summary

Problems solved by technology

But this kind of linear bearing still has some problems

Most of the current linear bearings, including the above-mentioned linear bearings, are not tightly connected in a wide temperature range. Therefore, it is necessary to replace the bearing with a slightly deviation in specification. The application range is relatively simple. The friction between the ball and the cage causes the ball to wear, and the ball The lubrication method is cumbersome, self-lubricating cannot be achieved, the cost of use is high, and the service life of the bearing is short

In addition, the linear bearing is also prone to excessive wear at the position where the connecting flange acts, and the connecting flange on the linear bearing is prone to loose connection

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