Machining method for inner ring and outer ring of conical roller bearing

A technology of tapered roller bearings and processing methods, which is applied in the field of bearing processing, can solve the problems of reducing grinding processing efficiency, increasing manufacturing costs, increasing grinding amount, etc., and achieves improving turning processing efficiency, saving turning processing time, and improving grinding processing efficiency Effect

Active Publication Date: 2016-05-18
哈尔滨汽车轴承有限公司
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems that the existing bearing processing method is easy to miss detection of steel material, the deformation after heat treatment is large, the amount of grinding is increased, the efficiency of grinding processing is reduced, and it is not conducive to ensuring product quality and increasing manufacturing cost, and further provides A processing method for the inner and outer rings of tapered roller bearings

Method used

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  • Machining method for inner ring and outer ring of conical roller bearing
  • Machining method for inner ring and outer ring of conical roller bearing
  • Machining method for inner ring and outer ring of conical roller bearing

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specific Embodiment approach 1

[0031] Specific implementation mode one: combine figure 2 Describe this embodiment, a method for processing the inner and outer rings of a tapered roller bearing in this embodiment, the method includes the following steps:

[0032] Step 1: Non-destructive testing of steel;

[0033] Steel bar non-destructive testing equipment sorts mixed steel, eddy current flaw detection for surface cracks, ultrasonic internal defect detection, automatically paints and marks the parts of steel bars that do not meet the testing requirements, and scraps the defective parts after they are cut off;

[0034] Step 2: cutting the detected steel;

[0035] Step 3: Forging inner and outer connecting ferrules;

[0036] A 2,500-ton hot forging machine and an automatic feeding device are used to automatically forge the inner and outer rings. The forging process is four stations: upsetting, preforming, forming, and punching. The forging time is 5S / piece and the forging temperature is: The initial forgin...

specific Embodiment approach 2

[0058] Specific implementation mode two: combination figure 2 To describe this embodiment, the end face after cutting in step 2 of this embodiment is measured with an angle ruler. Such setting is convenient to ensure the hardness requirements of the inner and outer rings. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0059] Specific implementation mode three: combination figure 2 To describe this embodiment, the carburizing temperature in Step 6 of this embodiment is 930°C. Such setting is convenient to ensure the hardness requirements of the inner and outer rings. Other compositions and connections are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses a machining method for an inner ring and an outer ring of a conical roller bearing, and relates to a bearing machining method. The method is used for solving the problems that in existing bearing machining, detection omission is prone to occurrence in steel material detection, deformation is large after thermal treatment, grinding amount increase exists, grinding efficiency is reduced, product quality can be not ensured easily, and manufacturing cost is increased. The method includes the steps of firstly, conducting nondestructive examination of steel materials; secondly, cutting off examined steel materials; thirdly, forging an inner and outer one-piece sleeve ring; fourthly, conducting annealing; fifthly, lathing the inner and outer one-piece sleeve ring; sixthly, quenching the lathed inner and outer one-piece sleeve ring; seventhly, separating the sleeve ring into an inner ring and an outer ring; eighthly, conducting chamfering; ninthly, grinding the inner ring and the outer ring. The thermal treatment deformation is greatly reduced, the grinding residual amount is decreased, and grinding efficiency is improved; the method is suitable for machining the inner ring and the outer ring of the bearing.

Description

technical field [0001] The invention relates to a bearing processing method, in particular to a processing method for the inner and outer rings of a tapered roller bearing. Background technique [0002] Tapered roller bearings are separable bearings, consisting of inner rings, outer rings, rollers, and cages. Tapered roller bearings are mainly used to bear combined radial and axial loads, mainly radial loads. Compared with angular contact ball bearings, it has larger load capacity and lower limit speed. The inner and outer rings of tapered roller bearings require high wear resistance and high hardness. Generally, the hardness of the inner and outer rings is required to reach HRC57-64. In order to meet the requirements, the steel must be hardened. There are five types of materials for the inner and outer rings in the international bearing steel specification ISO683-17, among which the B1-B8 high-carbon bearing steel in ISO683-17 is equivalent to the Chinese national standar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/003
Inventor 张玉清王鑫王志新周保鑫
Owner 哈尔滨汽车轴承有限公司
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