Method for manufacturing needle bearing

A manufacturing method and technology of needle roller bearings, applied in the direction of manufacturing tools, grinding machines, grinding/polishing equipment, etc., to achieve the effect of fine metal processing, small contact area, and prevention of axial movement

Inactive Publication Date: 2010-02-10
CHANGZHOU WUJIN CHANGJIANG NEEDLE BEARING
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is mainly to propose a method for manufacturing needle roller bearings with low

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  • Method for manufacturing needle bearing
  • Method for manufacturing needle bearing
  • Method for manufacturing needle bearing

Examples

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Example Embodiment

[0024] figure 1 and figure 2 The cage 1 and the needle roller 2 of the needle roller bearing in the present invention are made of 20CrMo alloy steel for the cage and GCr15 alloy steel for the needle rollers.

[0025] The manufacturing process of the cage is roughly divided into the following steps:

[0026] 1. Process a circular ring blank on the machine tool;

[0027] 2. Cut grooves on the inner and outer sides of the cage blank respectively, so that the cross-section is "M" shaped (see figure 2 );

[0028] 3. Process evenly distributed needle roller grooves on the circumference of the cage blank;

[0029] 4. Carry out metal surface treatment to ensure roughness.

[0030] In the above step 3, special attention should be paid to ensure that the machined needle roller groove is kept parallel to the central axis of the bearing. For this reason, it is necessary to control the parallelism of the lower mold and the upper mold tool for fixing the cage blank. In this embodime...

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Abstract

The invention relates to a method for manufacturing a needle bearing, in particular to a method for manufacturing a bearing of a piston link mechanism in cylinder equipment. The invention mainly aimsto provide the method for manufacturing the low-noise and low-vibration needle bearing in order to solve the problems in the needle bearing manufacturing industry at present. At present, a low-noise and low-vibration needle bearing product does not exist at home and a standard of low noise of the needle bearing also does not exist in the nation and in the industry. The method for manufacturing theproduct comprises the following steps of: a) processing a ringed retainer blank; b) fixing the ringed retainer blank on a lathe and cutting grooves on inner and outer sides of the retainer to form M-shaped sections; c) on a punch press, processing a needle groove parallel with the central axis of the bearing along the circumferential direction of the retainer; d), processing a cylindrical rollingneedle and processing symmetrical correcting curved surfaces at two ends of the cylindrical rolling needle; and e) assembling the rolling needle and the retainer into the bearing product.

Description

technical field [0001] The invention relates to the manufacture of needle roller bearings, in particular to the manufacture method of the bearings of the piston connecting rod mechanism in cylinder equipment. Background technique [0002] Needle roller bearings are widely used in mechanical transmission mechanisms such as washing machines, electric vehicles, automobiles, and motorcycles. Due to the use of multiple cylindrical needle rollers, needle roller bearings have a large load bearing capacity, and at the same time, due to high-speed rotation, they often become the source of noise. For example, in the cylinder equipment, the bearing of the piston linkage mechanism has a raceway width of 15 or 13 mm, and 17 needle rollers are evenly distributed on the circumference. After tens of thousands of rotations per minute, it will make a lot of noise. Even with spacer cages, the noise cannot be suppressed due to the linear contact of the needle rollers in the raceway (compared t...

Claims

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Application Information

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IPC IPC(8): B23P15/00B24B19/06C21D1/18
Inventor 吴培民
Owner CHANGZHOU WUJIN CHANGJIANG NEEDLE BEARING
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