Synchronous operation spacer of extensible guide device

Abstract

The invention relates to a synchronous operation spacer of a guideway, comprising a plurality of introns, and a long strip connecting part which connects a plurality of introns; the introns are separated in each rolling element of the guideway device, and provided with a backing part between the rolling elements at both sides corresponding to the rolling path; an error gap larger than the size of the backing part by 0.3 percent is designed for the backing part and corresponding to the rolling elements, and the backing part is made from flexible material with an oil absorption extending ratio of 0 to 0.3percent; therefore, the synchronous operation spacer has an extending rate after oil absorption less than the gap value between the rolling elements and the spacer before oil absorption, so that the rolling elements and the spacer of the invention is ensured not to interfere with each other in a working environment containing lubricating oil, and the smoothness and stability of the linear rolling guideway device is thus guaranteed.

Description

technical field [0001] The invention relates to a spacer, in particular to a synchronously running spacer of a guide rail device, which can avoid interference between rolling components and the spacer, and effectively achieve the purpose of improving smoothness. Background technique [0002] Today's linear guides are used more and more in industry. In addition to the high-precision effect of linear feed transmission, they also have the advantages of low friction loss rate, high energy conversion rate, low noise and high rigidity. , therefore, the importance of various linear guide rails for various industrial application tools is self-evident; [0003] The linear guideway is designed to allow the balls between the slide rail and the slider to circulate continuously and relieve stress. Spacers are used to run synchronously between the above-mentioned rolling components to avoid friction between the rolling components during operation and rotation. The operation of the linear...

AI Technical Summary

Problems solved by technology

[0004] The problem with common products currently on the market is that the above-mentioned spacers are mostly made of integral injection of plastic materials, and the spacers, lubricating oil and rolling components are all synchronously running in the linear guide device. At this time, the material and structure of the spacer Poor design will affect the stability of the distance between the spacer and the rolling assembly, and interference between the spacer and the rolling assembly will occur at the turning point of the rolling assembly, affecting the smoothness of the overall operation

[0006] First, the wear resistance is not good, and the operation of the guide rail device is continuous reciprocating motion, so its synchronous spacer needs to have good wear resistance to resist the wear caused by reciprocating motion, but the technology proposed in the US case No. US5988883 The material still does not have sufficient wear resistance

[0007] Second, the elasticity is not good. During the reciprocating movement of the guide rail device, the synchronous running spacer must continuously bear the longitudinal pulling force. Therefore, if the material selected for the synchronous running spacer is easy to be stressed and cause permanent deformation, it will cause the guide rail device. The operation is not smooth, and the life is shortened; in addition, it is often used that when the synchronous operation spacer runs to the direction turning part, it will not be easy to turn due to insufficient elasticity, which will cause the overall guide rail device to not run smoothly

[0008] Third, the oil resistance is not good. The synchronous operation spacer has multiple accommodation spaces, and each accommodation space is filled with rolling components, and then the spacers filled with rolling components are put into the guide rail device for operation. The space of the turning part in the direction is fixed. In order to make the rolling assembly run smoothly, the gap between the spacer and the rolling assembly must be maintained. However, the conventional synchronous operation spacer will cause excessive expansion due to oil products during operation, resulting in synchronous operation. The gap between the spacer covering the rolling assembly disappears too tightly, which makes it difficult for the rolling assembly to run; especially when the direction turning part is running, the over-expanded synchronous running spacer will not run easily due to the small gap, and the smoothness will be affected by serious interference

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