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Patent Searching and Data


Title:
BEARING TRACK GROOVE MEASUREMENT DEVICE AND BEARING TRACK GROOVE MEASUREMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2014/034362
Kind Code:
A1
Abstract:
Provided are a bearing track groove measurement device and a bearing track groove measurement method capable of very precise measurements and capable of measurements without performing destructive inspection even if a workpiece is an inner ring or an outer ring of a large bearing. A displacement sensor detects a radius that is the measurement from the center of rotation to the bottom of the groove, where the rotation is about the groove center in a cross section of the bearing track groove. A turning angle detection means detects the turning angle of the displacement sensor. A calculation means calculates the shape waveform of the bearing track groove on the basis of the radius detected by the displacement sensor and the turning angle for the radius detected by the turning angle detection means.

Inventors:
HATTORI YUICHI (JP)
Application Number:
PCT/JP2013/070651
Publication Date:
March 06, 2014
Filing Date:
July 30, 2013
Export Citation:
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Assignee:
NTN TOYO BEARING CO LTD (JP)
HATTORI YUICHI (JP)
International Classes:
G01B21/20
Foreign References:
JPH02284017A1990-11-21
JP2002098517A2002-04-05
JPH07167790A1995-07-04
JP2992625B21999-12-20
JP2992625B21999-12-20
Other References:
See also references of EP 2891866A4
Attorney, Agent or Firm:
SHIROMURA Kunihiko et al. (JP)
Kunihiko Shiromura (JP)
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