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Machining method for special-shaped structure sealing groove of angular contact bearing

A technology for angular contact bearings, machining methods, used in metalworking equipment, manufacturing tools, boring/drilling, etc.

Inactive Publication Date: 2021-09-14
中浙高铁轴承有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problem of machining the sealing groove of the special-shaped structure of the bearing, and propose a processing method for the sealing groove of the special-shaped structure of the angular contact bearing

Method used

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  • Machining method for special-shaped structure sealing groove of angular contact bearing
  • Machining method for special-shaped structure sealing groove of angular contact bearing
  • Machining method for special-shaped structure sealing groove of angular contact bearing

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with accompanying drawing.

[0017] 1. The technical route of the bearing ring.

[0018] Turning → heat treatment → initial grinding cycle → first additional tempering → fine grinding cycle → second additional tempering → return to the car seal groove → final grinding cycle → superfinishing.

[0019] Two, reference image 3 , when the bearing ring is turned, two inner steps are symmetrically processed on both sides, that is, the processing contour 1 before heat treatment and the required sealing groove contour 2.

[0020] 3. The processing of the return seal groove includes the following steps.

[0021] 1. Reference Figure 4 , the first step is to install a 35° rhombic blade 8 on the boring tool bar 5 with a 93° lead angle to process the end face in the inner diameter direction of the sealing groove. Allowance to avoid interference in post-process processing.

[0022] 2. Reference Figure 5 , th...

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Abstract

The invention relates to a machining method for a special-shaped structure sealing groove of an angular contact bearing. When the sealing groove is turned back, the machining method for the special-shaped structure sealing groove of the angular contact bearing adopts the following steps that a boring cutter bar with a tool cutting edge angle of 93 degrees and a 35-degree rhombic blade are adopted to machine a machining area below a groove opening; a boring cutter bar with the tool cutting edge angle of 52 degrees and the 35-degree rhombic blade are adopted for machining a slope with an included angle of 52 degrees between a sealing groove and an axial direction and a plane with the included angle of 5 degrees in the axial direction; the boring cutter bar with the tool cutting edge angle of 93 degrees is adopted, a 45-degree slope is made through the 35-degree rhombic blade, and a part of the bottom of the sealing groove is machined under the interference of a cutter; and a boring cutter bar with the tool cutting edge angle of 108 degrees and the 35-degree rhombic blade are adopted for machining the remaining part in the bottom of the sealing groove. According to the machining method for the special-shaped structure sealing groove of the angular contact bearing, multiple boring cutter bars are selected, numerical control equipment is utilized for program control, the technical problem of machining of the special-shaped groove with the small groove opening and a large inner cavity is solved, the machining level and capacity of the special-shaped sealing groove can be effectively improved, and innovation is achieved in a bearing machining field.

Description

technical field [0001] The invention relates to a processing method for a special-shaped structure sealing groove of an angular contact bearing. Background technique [0002] The quality of the bearing seal directly affects the life of the bearing. The failure of the seal will deteriorate the lubrication state of the bearing. With the development of the machinery industry, the requirements for the sealing of angular contact ball bearings are getting higher and higher. Due to the traditional sealing structure, the wear and tear is often serious. And the phenomenon of grease leakage seriously affects the use effect of the bearing. Usually the structure of the sealing groove is a 45° slope at the groove, such as figure 1 As shown, the sealing ring is embedded in the sealing groove with a certain amount of elastic interference. [0003] In order to improve the working life of the bearing, make the sealing ring not easy to fall off, and the sealing effect is good, the structure ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B41/00B23B35/00
CPCB23B41/00B23B35/00
Inventor 郭晓玉彭蒋振郑小宝李景阳胡场邓继溪
Owner 中浙高铁轴承有限公司
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