Machining method of rolling bearing formed by whole and precise hard turning and molding of sleeve ring

A technology of rolling bearing and processing method, which is applied to rolling contact bearings, rotating bearings, bearings, etc., can solve the problem that the shape and performance of the bearing raceway cannot be well controlled, hinder the operating reliability of the bearing, and the operating life. It can be well guaranteed and other problems to achieve the effect of improving running stability and reliability, improving dynamic sealing accuracy, and reducing friction.

Inactive Publication Date: 2013-10-02
SHANGHAI F&S BEARING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The purpose of the present invention is to provide a method for manufacturing a rolling bearing with integral precision hard turning of the ferrule, so as to overcome the cumbersome and complicated manufacturing process of the current bearing, the high cost, not being environmentally friendly and the shape and performance of the main working surface of the ferrule. To solve the problems that can be well guaranteed, develop anti-fatigue and green molding methods for bearing rings
Another object of the present invention is to provide a rolling bearing suitable for the overall precision hard turning of the ring, so as to overcome the limited shape of the bearing raceway design and the difficulty in ensuring the sealing accuracy of the existing rolling bearing rings that are formed by grinding and super-precision 1. The shape and performance of the bearing raceway are not well controlled, which hinders the further improvement of the reliability of the bearing operation and the further extension of the operating life

Method used

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  • Machining method of rolling bearing formed by whole and precise hard turning and molding of sleeve ring
  • Machining method of rolling bearing formed by whole and precise hard turning and molding of sleeve ring
  • Machining method of rolling bearing formed by whole and precise hard turning and molding of sleeve ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] Embodiment 1, a kind of processing method of the rolling bearing of integral precision hard turning of ferrule, such as Figure 11-13 , the rolling bearing is a single-row sealed four-point contact ball bearing, including inner and outer rings 112, 111, rolling elements 113 embedded between the outer ring raceway and inner ring raceway, retainer 114, grease 115 and seals 116, comprising the steps of:

[0090] 1) Ferrule processing, including the following operations:

[0091] ○1 Prepare the semi-finished inner and outer rings 112, 111 with machining allowances,

[0092] ○2 Quenching and tempering heat treatment of semi-finished inner and outer rings 112 and 111 with machining allowance left,

[0093] ○3 The inner and outer rings 112 and 111 after the heat treatment are respectively subjected to overall precision hard turning forming,

[0094] 2) Assembling the bearings in one set, the inner ring 112, outer ring 111 and finished rolling body 113 after the overall prec...

Embodiment 2

[0102] Embodiment 2, a kind of processing method of the rolling bearing of integral precision hard turning of ferrule, such as Figure 14-16 , the rolling bearing is a single row logarithmic convex raceway cylindrical roller bearing, including inner and outer rings 142, 141, rolling elements 143 embedded between the outer ring raceway and the inner ring raceway, and a cage 144, including the following step:

[0103] 1) Ferrule processing, including the following operations:

[0104] ○1 Prepare the semi-finished product inner and outer rings 142, 141 with machining allowances,

[0105] ○2 Quenching and tempering heat treatment of semi-finished inner and outer rings 142 and 141 with machining allowance left,

[0106] ○3 The inner and outer rings 142 and 141 after the heat treatment are respectively subjected to integral precision hard turning,

[0107] 2) Assembling the bearings, sorting and fitting the inner ring 142, outer ring 141 and finished cylindrical roller 143 after ...

Embodiment 3

[0114] Embodiment 3, a kind of processing method of the rolling bearing of integral precision hard turning of ferrule, such as Figure 17-20 , the rolling bearing is a ball-row-roller sealed bearing, including an outer ring 171, an inner ring (mandrel) 172, a ball 173 embedded between the grooved raceways of the inner and outer rings, and a non-grooved ball embedded in the inner and outer rings. Cylindrical rollers 174, ball cages 175, roller cages 176, grease 177 and seals 178 between the raceways include the following steps:

[0115] 1) Ferrule processing, including the following operations:

[0116] ○1 Prepare the semi-finished product inner and outer rings 172, 171 with machining allowance,

[0117] ○2 Quenching and tempering heat treatment of semi-finished inner and outer rings 172 and 171 with machining allowance left,

[0118] ○3 The inner and outer rings 172 and 171 after heat treatment are respectively subjected to integral precision hard turning,

[0119] 2) Assem...

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Abstract

The invention provides a machining method of a rolling bearing formed by whole and precise hard turning and molding of a sleeve ring. The machining method is characterized by comprising the following steps: after quenching and annealing heat treatment of the sleeve ring, carrying out the whole and precise hard turning and molding; and then combining and assembling a rolling body, wherein a sleeve ring rolling path comprises a fixed-curvature-groove-shape rolling path, a non-groove-shaped rolling path, a variable-curvature-shaped rolling path and a non-groove-shaped rolling path according to section shapes. The machining method disclosed by the invention overcomes the defects in the prior art that (1) performance defects on a machining surface, including grinding burn, a grinding metamorphic layer, grinding tensile stress, abrasive particle adhesion, scratches and the like, are caused by grinding and molding the sleeve ring; (2) shape defects on the machining surface that mutual position precision of all parts is not high, the shape of the rolling path cannot be accurately guaranteed and the like, are caused by carrying out a plurality of times of machining on different surfaces, even the same surface; (3) the defects that large investment of equipment, a tool clamp and personnel, and high machining cost are caused; and (4) the defects that a cutting solution needs to be used and the machining method is not environment-friendly enough are caused. The invention provides an anti-fatigue and green machining method which has the very great engineering actual meanings.

Description

technical field [0001] The invention relates to the technical field of rolling bearings, in particular to a processing method for rolling bearings formed by integral precision hard turning of ferrules. Background technique [0002] With the development of high-speed, heavy-duty, green and high-reliability main engines, higher and higher requirements are put forward for rolling bearings, especially higher operating reliability and longer operating life. [0003] Theory and practice have proved that the key factors affecting the reliability and life of the bearing are divided into two major aspects. The first is the sealing accuracy and reliability. The sealing accuracy is not high and unreliable. The result is that the grease in the bearing goes to the bearing External leakage and various foreign matter outside the bearing invade into the bearing, leading to lubrication failure, sealing failure, and wear failure. Compared with the classic fatigue spalling failure, these failu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B1/00B23B5/00F16C19/00
CPCB23B1/00B23B5/00F16C19/00
Inventor 赵联春赵思澄陈淑英
Owner SHANGHAI F&S BEARING TECH
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