Radial heavy load type roller linear guide rail pair

A linear guide pair, heavy-duty technology, applied in the direction of large fixed members, metal processing machinery parts, metal processing equipment, etc., can solve the problem of small bearing capacity, inability to meet large CNC machine tools and mechatronic products, poor contact rigidity, etc. problems, to achieve the effect of easy assembly, good rigidity and long service life
CN103433754AInactive Publication Date: 2013-12-11TIANJIN TAIRUI BEARING TECH DEV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN TAIRUI BEARING TECH DEV
Publication Date
2013-12-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the technical field of linear guide rail pairs, and particularly relates to a radial heavy load type roller linear guide rail pair. The radial heavy load type roller linear guide rail pair comprises a guide rail and a sliding base. The upper portion of the sliding base is provided with a row of a roller guide groove and a row of an upper roller path, and two rows of lateral roller paths are symmetrically arranged on the two sides of the sliding base; rollers bearing radial pressure loads are arranged in the upper roller path, rollers bearing lateral pressure loads are arranged in the lateral roller paths through retainers, each roller is a circular cylinder with protruding shoulders at the two ends, and the rollers are in linear contact with the roller path face of the upper roller path and the roller path faces of the lateral roller paths. The rollers stably move in the roller paths and can bear acting force in all directions, abrasion of contact surfaces of the rollers and the roller paths is low, and thus the service life of the radial heavy load type roller linear guide rail pair is long. Compared with a traditional product, contact rigidity of the radial heavy load type roller linear guide rail pair is increased to about 5 times, and bearing capacity is increased to about 10 times.
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Description

technical field

[0001] The invention belongs to the technical field of linear guide rail pairs, and in particular relates to a radial heavy-duty roller linear guide rail pair. Background technique

[0002] With the rapid development of CNC machine tools in the direction of large-scale, heavy-duty, high-speed, low-noise and fast-response, CNC gantry milling, CNC floor boring, large-scale machining centers, and large-scale special equipment urgently need rolling bearings with higher bearing capacity and stronger rigidity. The linear guide rail pair is matched with it.

[0003] At present, the traditional ball linear guide is usually used in the machinery industry. Its structure is: the sliding seat and the guide rail each have four arc raceways, which are supported by balls, and the contact between the ball and the raceway surface is point contact. The advantages are small friction, high sensitivity and precision, and are suitable for small precision machine tools. The disad...

Claims

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