Novel linear roller pin heavy-load guide rail pair

Abstract

The invention discloses a novel linear roller pin heavy-load guide rail pair. The novel linear roller pin heavy-load guide rail pair comprises a guide rail and a sliding block, wherein a sliding opening is arranged in the sliding block, the sliding opening is arranged in the guide rail in a matched mode, a first annular roller pin circulating groove is arranged in the sliding block, the bottom endof the first annular roller pin circulating groove penetrates through the sliding opening, and a set of first roller pins which are in loose fit are arranged in the first annular roller pin circulating groove; and second annular roller pin circulating grooves are arranged in the left side and the right side of the sliding opening, the sides, close to the guide rail, of the two second annular roller pin circulating grooves penetrate through the sliding opening, and a set of second roller pins which are in loose fit are arranged in the two second annular roller pin circulating grooves. The novel linear roller pin heavy-load guide rail pair is ingenious and reasonable in structural design, the sliding block can stably operate at high precision in a heavy-load environment, and the novel linear roller pin heavy-load guide rail pair is worthy of popularization and application.

Description

technical field [0001] The invention relates to a guide rail pair, in particular to a novel linear needle roller heavy-duty guide rail pair. Background technique [0002] Linear guides can be divided into three types: roller linear guides, cylindrical linear guides, and ball linear guides, which are used to support and guide moving parts and perform reciprocating linear motion in a given direction. [0003] The current sliders are installed with balls and ball return devices to make rolling friction contact between the slider and the guide rail. In this way, since the balls, the slider and the guide rail are in point contact, under heavy load conditions , it is very easy to cause excessive force on the contact area of ​​the slider and the guide rail, and cause the contact area of ​​the slider and the guide rail to sag, resulting in looseness and instability of the slider. Therefore, the guide rail sliders on the market cannot be used in heavy-duty applications. If it is nec...

AI Technical Summary

Problems solved by technology

[0003] The current sliders are installed with balls and ball return devices to make rolling friction contact between the slider and the guide rail. In this way, since the balls, the slider and the guide rail are in point contact, under heavy load conditions , it is very easy to cause excessive force on the contact area of ​​the slider and the guide rail, and cause the contact area of ​​the slider and the guide rail to sag, resulting in looseness and instability of the slider. Therefore, the guide rail sliders on the market cannot be used in heavy-duty applications. If it is necessary to use the working condition guiding movement, the guide rail slider can only be made very large, which is not conducive to the application in a narrow space. If it is made small, it is very easy to be damaged by overload, which is not conducive to high-precision occasions. Stable and high-precision use will greatly affect the quality of the produced products

[0004] Chinese invention patent CN201320634549.7 discloses the use of dust-proof and linear guide rail sliders for linear guide rail sliders. This linear guide rail slider uses balls to act as rolling connection parts. The slider is loose due to excessive stress in the area, which will seriously cause the scrapping of the slider of the guide rail; the market urgently needs a guide rail pair that can be used stably under heavy loads, and is small in size and high in precision.

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