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Centerless penetrating tapered roller crown superfinishing method using tapered column matching guide roller

A tapered roller and ultra-finishing technology, which is applied in the direction of grinding machine tools, grinding devices, metal processing equipment, etc., can solve the problems of lack of versatility of guide rollers, long time, and high overall cost of guide rollers

Active Publication Date: 2019-11-05
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the lack of versatility of the front and rear guide rollers in the existing ultra-finishing method above, resulting in high overall cost and long time for guide roller processing and grinding, the present invention provides a centerless through-type conical roller adopting tapered columns to match guide rollers. sub-convexity superfinishing method

Method used

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  • Centerless penetrating tapered roller crown superfinishing method using tapered column matching guide roller
  • Centerless penetrating tapered roller crown superfinishing method using tapered column matching guide roller
  • Centerless penetrating tapered roller crown superfinishing method using tapered column matching guide roller

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Effect test

Embodiment 1

[0086] In this embodiment, the relevant parameters involved in the calculation of the roller attitude parameters, convexity analysis and calculation of the roll cone angle of the leading roller are as follows: Roller half cone angle α =1°, roller length l =30mm, the radius of the small end of the roller r =8mm, the thickness of the oil stone B=8mm, the contact angle between the big end of the roller and the guide roller gamma =16°.

[0087] Take the inclination angle of the prime line on the roller lambda =0.05°, calculated by formulas (1) and (4) θ =1.05°, φ =1.3413°. Using the convexity analysis method described in the published invention patent with application number 201610052176.0, the contact line diagram of the roller-whetstone and the comparable longitudinal section diagram were drawn and evaluated. The evaluation result is that the comparable longitudinal cross-sectional diagram is acceptable, but the roller-oil stone contact line diagram is unacceptable, spe...

Embodiment 2

[0094] In this embodiment, the relevant parameters that need to be given in the calculation of the roller attitude parameters, the convexity analysis and the calculation of the cone angle of the leading roller are as follows: Roller half cone angle α =2°, roller length l =12mm, the radius of the small end of the roller r =5mm, the thickness of the oil stone B=6mm, the contact angle between the big end of the roller and the guide roller gamma =16°.

[0095] Take the inclination angle of the prime line on the roller lambda =0.05°, calculated by formulas (1) and (4) θ =2.05°, φ =2.6676°. Using the convexity analysis method described in the published invention patent with application number 201610052176.0, the contact line diagram of the roller-whetstone and the comparable longitudinal section diagram were drawn and evaluated. The evaluation result is that the roller-oilstone contact line diagram is acceptable, but the comparable longitudinal section diagram is unacceptab...

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Abstract

The invention relates to a centerless penetrating type conical roller convexity superfinishing method adopting a conical column to match a guide roller. A profile of a rear guide roller is a cylindrical surface, and only a profile of a front guide roller is a spiral conical curved surface; and the profile of the front guide roller is specially designed and processed according to geometric parameters such as a cone angle of a given type conical roller as per the requirement on matching the cylindrical guide roller. According to the superfinishing method provided by the invention, the convexity of the roller is obtained, and meanwhile, the cylindrical rear guide roller is simple to process and can be commonly applied to different types of conical rollers, so that the number of expensive special guide rollers required for production can be greatly reduced, and the overall cost and the time of guide roller processing and polishing are greatly reduced.

Description

technical field [0001] The invention relates to the technical field of rolling bearing manufacturing, in particular to a centerless penetrating tapered roller crown superfinishing method using a tapered column to match a guide roller. Background technique [0002] Tapered rollers are key parts in rolling bearings, and their tapered surfaces often have strict convexity requirements. The roller crown will have a positive impact on improving the contact stress distribution between the roller and the raceway and the shape of the elastohydrodynamic lubricating oil film, which is of great significance to improving the bearing performance and life reliability. The roller convexity is in the shape of a curve, and it is a small amount of micron level. Its processing has always been one of the important technical problems that need to be solved in bearing manufacturing. Centerless through-type superfinishing is the main process of tapered roller crown processing. Its processing metho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B37/00B24B1/00
CPCB24B1/00B24B37/00
Inventor 高作斌杨晓波杨艳伟贾少星郭星成
Owner HENAN UNIV OF SCI & TECH