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Production method of precise tapered roller

A technology of tapered rollers and production methods, which is applied to bearing components, shafts and bearings, mechanical equipment, etc., can solve the problems of not being able to mass-produce Class II and Class I tapered rollers, and achieve labor saving, stable quality, and avoidance of The effect of bump damage

Inactive Publication Date: 2014-05-28
SHANDONG DONGE STEEL BALL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional tapered roller production generally adopts processes such as cold heading, soft grinding, heat treatment, light decoration, coarse and fine grinding, ball base surface grinding, final grinding, and superfinishing, and it is not yet possible to mass-produce Class II and Class I tapered rollers.

Method used

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  • Production method of precise tapered roller
  • Production method of precise tapered roller
  • Production method of precise tapered roller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: with (32207) Take the roller production process as an example, the roller material is GCr15, the steps are as follows:

[0039] 1), pre-processing:

[0040] The light drawn steel wire is processed into a blank by a cold heading machine, the machining allowance is 0.30-0.50mm, and the displacement deviation is less than 0.06-0.15mm; the blank size

[0041] 2), soft grinding processing:

[0042] The outer diameter of the soft ground roller blank is processed on a centerless grinding machine, two-step grinding, the grinding amount of the first step is 0.20mm, and the grinding amount of the second step is 0.10mm, and the bearing roller is used for the roller transmission between the two steps of grinding. Conveyed by wire machine; ceramic grinding wheel with 60-80 grain size is used, and the processing speed of guide wheel is 50-130r / min;

[0043] The end face of the roller blank is softly ground and processed on a double end face grinder. The tapered r...

Embodiment 2

[0056] Embodiment 2: with (30216) Take the roller production process as an example, the roller material is GCr15,

[0057] 1), pre-processing:

[0058] The light drawn steel wire is processed into a roller blank through cold heading, and the blank size

[0059] 2), soft grinding processing:

[0060] The outer diameter of the soft ground roller blank is processed on a centerless grinding machine, two-step grinding, the first step grinding amount is 0.30mm, the second step grinding amount is 0.12mm, and the roller transmission between the two step grinding is connected with the bearing roller Line machine conveying;

[0061] The end face of the roller blank is softly ground and processed on a double end face grinder. The tapered rollers whose outer diameter has been softly ground are transported to the double-end surface grinding machine through the bearing roller connecting machine for end surface processing. The conveying speed of the bearing roller connecting machine ...

Embodiment 3

[0075] Embodiment 3: with (32313) Take the roller production process as an example, the roller material is GCr15,

[0076] 1), pre-processing:

[0077] The light drawn steel wire is processed into a roller blank through cold heading, and the blank size

[0078] 2), soft grinding processing:

[0079] The outer diameter of the soft ground roller blank is processed on a centerless grinding machine, two-step grinding, the first step grinding amount is 0.40mm, the second step grinding amount is 0.15mm, and the roller transmission between the two steps grinding is connected with the bearing roller Line machine conveying;

[0080] The end face of the roller blank is softly ground and processed on a double end face grinder. The tapered rollers whose outer diameter has been softly ground are transported to the double-end surface grinding machine through the bearing roller connecting machine for end surface processing. The conveying speed of the bearing roller connecting machine...

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Abstract

The invention discloses a production method of a precise tapered roller. The method comprises the following steps: 1, preprocessing: carrying out cold heading processing of light tensioned steel wires to form a roller blank; 2, soft buffing processing: carrying out soft buffing of the external diameter of the roller blank, carrying out two-step grinding processing on two centerless grinders, and carrying out soft buffing of the end surfaces of the roller blank; 3, heat treatment and hard grinding: carrying out hard grinding of the external diameter of the surface processed roller on a centerless grinder; 4, base surface: carrying out spherical base surface processing of the fine ground roller on a spherical base grinder; 5, fine finishing: carrying out final grinding of the external diameter on the centerless grinder; and 6, superfinishing: carrying out superfine crown processing of the fine finished roller to obtain the finished tapered roller. A detection result shows that all indexes of the tapered roller obtained in the invention can stably reach national standard (GB / T25767-2010) II level standards, and the rolling surface roughness, the spherical base surface jumping SDW and the circularity of the tapered roller can reach national standard I level standards, and the bus of the external diameter of the roller has a crown form.

Description

technical field [0001] The invention relates to a production method of a precision tapered roller, which belongs to the technical field of tapered roller manufacturing. Background technique [0002] China's tapered roller industry has a history of more than 60 years since it produced the first batch of products in 1948. From the perspective of technological progress and industry development, the development after the reform and opening up is the fastest stage. At present, China's tapered roller industry has been able to produce mm, more than 1,800 specifications of products, the precision can be mass-produced to grade III, and a small amount can reach grade II. The products are used in bearings, widely used in machine tools, ships, railways, drilling, engineering machinery, household appliances, automobiles, agricultural machinery and other industries. China has become a country with more tapered roller enterprises in the world, and it is also a country with relatively larg...

Claims

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Application Information

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IPC IPC(8): F16C33/36B23P15/00
Inventor 杨吉明靳全勇李莉
Owner SHANDONG DONGE STEEL BALL GRP
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