Method for machining bearing ring with installation boss and narrow and small grinding undercut

A technology for bearing rings and mounting bosses, which is applied in the field of overrun groove processing, can solve problems such as the inability to complete narrow overrun groove processing, and achieve the effects of saving production costs and auxiliary costs

Active Publication Date: 2015-04-08
AVIC HARBIN BEARING
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  • Application Information

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Problems solved by technology

[0003] The purpose of this invention is to solve the existing problem that the processing of narrow and small overrun grooves ca

Method used

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  • Method for machining bearing ring with installation boss and narrow and small grinding undercut
  • Method for machining bearing ring with installation boss and narrow and small grinding undercut
  • Method for machining bearing ring with installation boss and narrow and small grinding undercut

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specific Embodiment approach 1

[0021] Specific implementation mode 1: This implementation mode is a processing method of a bearing ring with a mounting boss and a narrow overtravel groove, which is specifically completed according to the following steps:

[0022] 1. Rough turning forming: use a lathe to turn the ring-shaped ferrule forging into a rotary body with a stepped outer diameter to obtain a rough product of the bearing ring. The outer diameter of the upper boss of the rough product of the bearing ring is 62.3mm, and the outer diameter of the lower ring The outer diameter is 57.4mm;

[0023] 2. Tooling adjustment and clamping

[0024] ①. Use the mounting hole of φ30+0.23 and 4 screws to position and install the milling mold body on the indexing plate of the additional axis;

[0025] ②. Adjust the additional axis so that the positioning surface of the milling mold body is in a horizontal state; Two points, and the two points are 180° relative to each other on the circumference, adjust until the poi...

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Abstract

The invention discloses a method for machining a bearing ring with an installation boss and a narrow and small grinding undercut, and relates to a method for machining the grinding undercut. The method aims at solving the problem that at present, the narrow and small grinding undercut cannot be machined. The method for machining the bearing ring with the installation boss and the narrow and small grinding undercut comprises the steps of firstly, carrying out rough turning forming, and obtaining a rough bearing ring body; secondly, adjusting and clamping a tool; and thirdly, carrying out milling forming, and obtaining the bearing ring with the installation boss and the narrow and small grinding undercut. The method has the advantage that the production cost is saved. According to a convention technological process, two-time clamping machining is needed, and after a milling mold is used, machining can be completed only through one-time clamping. Compared with the prior art, the tool cost, the man hour cost, the electricity cost and the auxiliary cost can be saved by 50 percents. The method is mainly used for machining the bearing ring with the installation boss and the narrow and small grinding undercut.

Description

technical field [0001] The invention relates to a processing method of an overrun groove. Background technique [0002] A bearing ring is an annular part of a radial rolling bearing with one or several raceways. In order to improve the service life and performance of aero-engine bearings, the design department considers the factors that affect the service life of bearings more and more carefully when designing the bearing structure. In order to prevent the stress concentration point at the root of the boss where the bearing ring is installed, an overtravel groove is designed at the root of the boss to eliminate the stress concentration during use and reduce the factors that affect the service life of the bearing. Due to the small size of the overrun groove, the processing difficulty is increased, so the prior art cannot complete the processing of such a narrow overrun groove. Contents of the invention [0003] The purpose of the present invention is to solve the existing...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/003
Inventor 刘海波王大勇孙慧广曹阳刘强王喆刘颖志吴枚薛雪关云朋于安乐杨雪林王慧敏刘伟王涛
Owner AVIC HARBIN BEARING
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