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Turning method and turning device

A kind of turning, one-sided technology, applied in the direction of turning equipment, turning equipment, tools for lathes, etc., can solve the problems such as turning cannot be processed, and achieve high-precision turning, excellent operability, controllability and workability. Excellent results

Inactive Publication Date: 2016-12-21
NTN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Therefore, in the past, the raceway surface (groove) of the inner ring and the raceway surface (groove) of the outer ring could not be turned at the same time.

Method used

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  • Turning method and turning device
  • Turning method and turning device
  • Turning method and turning device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] Embodiments of the present invention will be described below with reference to the drawings.

[0031] Figure 4 A bearing 1 using an inner ring 2 and an outer ring 3 turned by the turning method according to the present invention is shown. A bearing 1 is mainly composed of an inner ring 2 , an outer ring 3 , a plurality of balls 4 as rolling elements, and a cage 5 . raceway surfaces 2a, 2a, the outer ring 3 is arranged on the outer side of the inner ring 2, and a plurality of rows (in this case, two rows) of outer raceway surfaces 3a, 3a are formed on the inner diameter surface, and the plurality of rows are formed as The balls 4 of the rolling elements are interposed between the inner raceway surfaces 2a, 2a of the inner ring 2 and the outer raceway surfaces 3a, 3a of the outer ring 3 in a freely rolling manner, and the cages 5, 5 are disposed on the inner ring 2 between the outer ring 3 and the balls 4 at equal intervals in the circumferential direction.

[0032] I...

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PUM

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Abstract

Provided are a turning method for enabling machining of double-row raceway surfaces (grooves) so as to highly precisely set a mutual PCD dimension error and a groove pitch (raceway surface pitch), and a turning device capable of such turning. The turning method and the turning device perform turning on respective raceway surfaces (2a, 3a) of an inner race (2) and an outer race (3) of a double-row bearing (1). The respective raceway surfaces of any one of the inner race (2) and the outer race (3) are subjected to simultaneous turning with a turning tool (10) including a plurality of cutting tools (11A, 11B). After that, a direction of the plurality of cutting tools (11A, 11B) of the turning tool (10) is changed, and the respective raceway surfaces (2a, 3a) of another one of the inner race (2) and the outer race (3) are subjected to simultaneous turning with the turning tool (10).

Description

technical field [0001] The invention relates to a turning method and a turning device. Background technique [0002] Generally speaking, a bearing is mainly composed of an inner ring, an outer ring, a plurality of balls and a cage. The inner ring is formed with an inner raceway surface on the outer diameter surface, and the outer ring is formed with an outer raceway surface on the inner diameter surface. The plurality of balls are rotatably interposed between the inner raceway surface of the inner ring and the outer raceway surface of the outer ring, and the cage is disposed between the inner ring and the outer ring and holds the balls in a fixed position. equally spaced in the circumferential direction. [0003] The raceway surfaces of the inner and outer rings of these bearings are formed by turning. However, rolling elements in bearings, that is, balls, are sometimes arranged in multiple rows. In the case of having such multiple rows of raceway surfaces, it is necessar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B1/00B23B5/00B23B21/00B23B27/02F16C19/18F16C33/64
CPCB23B1/00B23B29/24B23B2215/12B23B2270/14F16C19/18F16C33/64F16C2220/62
Inventor 西木卓白神博昭
Owner NTN CORP