Method for manufacturing outer ring of tapered roller bearing

A technology of tapered roller bearing and manufacturing method, applied in bearing components, shafts and bearings, mechanical equipment and other directions, can solve the problems of high energy consumption, complex process, large material loss, etc., to extend the life of the core roller, the process is simple, The effect of low material loss

Inactive Publication Date: 2009-11-11
NINGXIA QINCHANG ROLLING BEARING MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the production process of the above outer ring, the cutting process mainly has the problem of large material loss, while the hot forging process has the disadvantages of large energy consumption and complicated process.

Method used

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  • Method for manufacturing outer ring of tapered roller bearing
  • Method for manufacturing outer ring of tapered roller bearing

Examples

Experimental program
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Embodiment 1

[0028] Taking the manufacture of the 30209 type tapered roller bearing shell as an example, the specific manufacturing method of the present invention is explained:

[0029] Type 30209 tapered roller bearing shell mass M = 0.161 kg, its outer diameter D = 85 mm, the inner diameter of the large radius end is 70 mm, the inner diameter taper is 15 ° 6'34 ", and the axial height of the outer shell is 16 mm.

[0030] Set the mass allowance M for cutting 2 is 0.046 kg, and the grinding mass allowance of the outer ring of a single bearing is M 3 is 0.001 kg.

[0031] 1) The outer diameter of the reclaimed material is D 1 = Bearing steel pipe with an inner diameter of 62 mm and an inner diameter of 42 mm is the raw material, take M 1 = 0.37 kg of this kind of bearing steel pipe, its length is 29.4 mm.

[0032] What needs to be explained here is the outer diameter D of the raw material of the bearing steel pipe used. 1 Just satisfy: 1 / 2D≤D 1

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PUM

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Abstract

The invention discloses a method for manufacturing an outer ring of a tapered roller bearing, comprising the following steps of: a: taking a material: setting the quality of the finished product outer ring as M, setting the outer diameter as D, taking a bearing steel pipe with the outer diameter of D1 as the raw material, taking the bearing steel pipe with the quality of M1 and meeting the condition that one half of D is less than or equal to D1 which is less than D, and M1 is equal to 2M plus M2 plus 2M3, wherein M2 is the margin of quality by cutting, and M3 is the margin of quality of single outer ring by grinding process; b: cold rolling: rolling on the bearing steel pipe taken in the step a for obtaining a combined blank of the outer ring; c. cutting: cutting the combined blank at the connecting ring for obtaining a single blank of the two outer rings; d: thermal processing; and e: finish machining: grinding the single blank of the outer ring. The proposal leads the outer ring of the tapered roller bearing to realize the cold rolling for shaping, has the advantages of small material loss, saved energy consumption, simple process, high production efficiency and the like, and simultaneously ensures the product quality.

Description

technical field [0001] The invention relates to a manufacturing method of a bearing outer ring, more specifically a manufacturing method of the outer ring of a tapered roller bearing, and belongs to the field of machining. Background technique [0002] Tapered roller bearings are widely used in automobiles, rolling mills, mining, metallurgy, plastic machinery and other industries. Tapered roller bearings have tapered inner and outer raceways with tapered rollers arranged in between. The projected lines of all conical surfaces meet at the same point on the bearing axis. This design makes tapered roller bearings particularly suitable for combined (radial and axial) loads. The axial load capacity of the bearing is mostly determined by the contact angle α; the larger the α angle, the higher the axial load capacity. The size of the angle is represented by the calculation coefficient e; the larger the value of e, the larger the contact angle, and the greater the applicability o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/64
Inventor 黄仁太施亚珍刘长明
Owner NINGXIA QINCHANG ROLLING BEARING MFG
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