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Linear bearing retainer

A linear bearing and cage technology, applied in the field of bearings, can solve the problems of increasing friction between the bearing and the fixed shaft, reducing the bearing stability, increasing the load of the linear bearing, etc., so as to reduce the friction, make full use of the plate, and improve the overall accuracy. Effect

Active Publication Date: 2013-12-25
宁波恒力汽配轴承有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing cage is generally assembled, which includes multiple parts. After the parts are manufactured, they are assembled into a whole cage. Finally, the cage is installed in the bearing sleeve. This cage is installed in the bearing sleeve. , although it can meet the basic operation of the bearing, but because the cage is assembled, there are the following problems: since the linear bearing is an integral movement, the integrity of the cage is poor, and the overall strength is low. Under long-term vibration of the cage, the position of each component will move, causing the original structure of the cage to change, which will increase the friction between the bearing and the fixed shaft, and increase the load of the linear bearing , so that the bearing wears seriously, the service life is shortened, and the cost increases; it is assembled from multiple parts, each part needs to be made with different molds, the production and assembly are more cumbersome, the investment is increased, and the labor required for assembly is greatly increased. , the automation process is low, so the production efficiency is also low; due to its poor integrity, its precision is also greatly reduced, and the stability of the bearing during operation is also greatly reduced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] S1. According to the components and mass percentages of the linear bearing cage in Example 1 in Table 1, the raw materials were prepared, and the raw materials were crushed and refined into metal powder by ball milling, and pre-annealed at 680°C under hydrogen or vacuum conditions Processing, removing impurities, classifying the powder according to the particle size, blending the metal powders of different components at different levels by mechanical means, and making the powder of small particles into large particles or aggregates after blending;

[0055] S2, rolling the large particle or aggregate powder prepared in step S1 into a plate-shaped blank under a pressure of 400 MPa, and sintering at 1000° C. for 3 hours to obtain a semi-finished plate;

[0056] S3. Heat-treat the semi-finished plate, normalize at 1020°C for 4 hours, take out the furnace and air cool; quench at 860°C for 3 hours, water cool to room temperature; temper at 200°C for 2 hours, and air cool to ob...

Embodiment 2

[0065] S1. According to the components and mass percentages of the linear bearing cage in Example 2 in Table 1, the raw materials were prepared, and the raw materials were crushed and refined into metal powder by ball milling, and pre-annealed at 700°C under hydrogen or vacuum conditions Processing, removing impurities, classifying the powder according to the particle size, blending the metal powders of different components at different levels by mechanical means, and making the powder of small particles into large particles or aggregates after blending;

[0066] S2. Roll the large particle or aggregate powder prepared in step S1 into a plate-shaped blank under a pressure of 350 MPa, and sinter at 980° C. for 2 hours to obtain a semi-finished plate;

[0067] S3. Heat-treat the semi-finished plate, normalize it at 1060°C for 4 hours, take it out of the furnace and air-cool it; quench it at 850°C for 2 hours, then water-cool it to room temperature; temper it at 180°C for 2 hours,...

Embodiment 3

[0071]S1. According to the components and mass percentages of the linear bearing cage in Example 3 in Table 1, the raw materials were prepared, and the raw materials were crushed and refined into metal powder by ball milling, and pre-annealed at 710°C under hydrogen or vacuum conditions Processing, removing impurities, classifying the powder according to the particle size, blending the metal powders of different components at different levels by mechanical means, and making the powder of small particles into large particles or aggregates after blending;

[0072] S2. Roll the large particle or aggregate powder prepared in step S1 into a plate-shaped blank under a pressure of 500 MPa, and sinter at 1050° C. for 4 hours to obtain a semi-finished plate;

[0073] S3. Heat-treat the semi-finished plate, normalize at 1080°C for 5 hours, take out the furnace and air-cool; quench at 830°C for 3 hours, and water-cool to room temperature; temper at 210°C for 4 hours, and air-cool to obtai...

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Abstract

The invention provides a linear bearing retainer which is formed integrally, good in integrity, and high in strength, belonging to the technical field of bearings. The invention solves the technical problems that the bearing retainer in the prior art is poor in integrity, low in precision, easy to wear, and short in service life. The technical scheme provided by the invention is that the linear bearing retainer comprises a hollow cylindrical frame, wherein a plurality of recesses are formed axially in the surface of the cylindrical frame; ball rolling paths are formed in the recesses; the ball rolling paths are communicated with the interior of the cylindrical frame; the cylindrical frame is in the shape of an equilateral hexagon; the recesses are formed in the six faces of the cylindrical frame respectively; the cylindrical frame is formed integrally. The bearing retainer is formed integrally, good in integrity, high in strength, difficult to wear, simple in process, and longer in service life.

Description

technical field [0001] The invention belongs to the technical field of bearings, and relates to a linear bearing, in particular to a linear bearing cage. Background technique [0002] Linear bearings, also known as linear motion bearings or linear guide bearings, are low-cost linear motion systems for use with infinite strokes and guide rails. Because the bearing balls are in point contact with the guide rail, the load is small, and the internal balls rotate with extremely small frictional resistance, so that high-precision smooth motion can be obtained. Linear bearings are generally divided into plastic linear bearings and metal linear bearings. Due to plastic There is sliding friction between the linear bearing and the shaft, and the friction between the two is relatively large, so the movement speed of the plastic linear bearing is limited to a certain extent. Compared with the plastic linear bearing, the metal linear bearing is faster in motion and runs It is more stabl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/38C22C38/44B22F3/16C21D9/00
Inventor 郑世良梅雪成
Owner 宁波恒力汽配轴承有限公司
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