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Patent Searching and Data


Title:
TURNING METHOD AND TURNING DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/034361
Kind Code:
A1
Abstract:
Provided are a turning method, which makes possible the processing of a double row of raceway surfaces (grooves) with a highly precise mutual difference in PCD dimension and groove pitch (raceway surface pitch), and a turning device with which such turning is possible. The present invention turns the respective raceway surfaces (2a, 3a) of the inner race (2) and the outer race (3) of a double row bearing (1). The respective raceway surfaces of either the inner race (2) or the outer race (3) are turned simultaneously with a turning tool (10) that has multiple bits (11A, 11B). The orientation of the bits (11A, 11B) of the turning tool (10) is then changed and the other respective raceway surfaces (2a, 3a) are turned simultaneously using said turning tool (10).

Inventors:
NISHIKI TAKU (JP)
SHIRAGA HIROAKI (JP)
Application Number:
JP2013/070643
Publication Date:
March 06, 2014
Filing Date:
July 30, 2013
Export Citation:
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Assignee:
NTN TOYO BEARING CO LTD (JP)
NISHIKI TAKU (JP)
SHIRAGA HIROAKI (JP)
International Classes:
B23B1/00; B23B5/00; B23B21/00; B23B27/02; F16C19/18; F16C33/64
Foreign References:
JP2004100754A2004-04-02
JP2007315589A2007-12-06
JPH01281801A1989-11-13
JPS6164903U1986-05-02
JPH05253701A1993-10-05
Other References:
See also references of EP 2891535A4
Attorney, Agent or Firm:
SHIROMURA Kunihiko et al. (JP)
Kunihiko Shiromura (JP)
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