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Method for manufacturing outer ring of tapered roller bearing

A technology for tapered roller bearings and manufacturing methods, applied in the manufacture of outer rings and bearing outer rings, achieving the effects of small material loss, reasonable distribution, and overcoming differences in geometric accuracy

Inactive Publication Date: 2010-10-13
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
  • Method for manufacturing outer ring of tapered roller bearing

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Taking the manufacture of the tapered roller bearing outer cover of the 30209 model as an example, the concrete manufacturing method of the present invention is illustrated:

[0032] The mass of the 30209 type tapered roller bearing jacket is 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 jacket is 16 mm.

[0033] Set the cutting quality allowance M 2 is 0.046 kg, the grinding quality allowance M of a single bearing outer ring 3 is 0.001 kg.

[0034] 1) The outer diameter of the material is D 1 =The bearing steel pipe with 62 mm and inner diameter of 42 mm is used as the raw material, take M 1 =0.37 kilograms of this kind of bearing steel pipe, its length is 29.4 millimeters.

[0035] 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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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 outerring 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 theconnecting 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 ofthe 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 method for manufacturing a bearing outer ring, more specifically a method for manufacturing an outer ring of a tapered roller bearing, which belongs to the field of mechanical processing. [0002] Background technique [0003] 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 ring raceways with tapered rollers arranged in between. The projection 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 a 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 expressed by the calculation coefficient e; the larger the value of e, the larger the contact angle, and the g...

Claims

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Application Information

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Patent Type & Authority Patents(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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