Title:
STRUCTURE FOR WELDING RING GEAR AND DIFFERENTIAL CASE
Document Type and Number:
WIPO Patent Application WO/2011/158330
Kind Code:
A1
Abstract:
A welding structure (10) is configured in such a manner that a first abutting surface (1a) of a differential case (1) and a second abutting surface (2a) of a ring gear (2) are abutted against each other, the ends of the abutted portions are welded by deposited metal (5, 6), an ultrasonic wave is applied to the welded portions (7, 8) which are welded by the deposited metal, and the length of the welded portions (7, 8) are tested by analyzing a reflected echo from a reflection source. A space (S1) having a width greater than the wavelength of the ultrasonic wave is formed between the first abutting surface (1a) and the second abutting surface (2a), and the space is formed by a groove (1b) formed in either the first abutting surface (1a) and/or the second abutting surface (2a). Ends (5a, 6a) of the deposited metal (5, 6) are exposed to the space (S1), and this allows the lengths (D1, D2) of the welded portions (7, 8) to be accurately tested.
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Inventors:
FUJIMOTO MASAHIRO (JP)
UCHIDA KEISUKE (JP)
IWATANI SHINGO (JP)
ENDO TAKAHITO (JP)
KURAMOTO GO (JP)
TSUNEKAWA HIROKAZU (JP)
ENDO KEN (JP)
UCHIDA KEISUKE (JP)
IWATANI SHINGO (JP)
ENDO TAKAHITO (JP)
KURAMOTO GO (JP)
TSUNEKAWA HIROKAZU (JP)
ENDO KEN (JP)
Application Number:
PCT/JP2010/060128
Publication Date:
December 22, 2011
Filing Date:
June 15, 2010
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD (JP)
FUJIMOTO MASAHIRO (JP)
UCHIDA KEISUKE (JP)
IWATANI SHINGO (JP)
ENDO TAKAHITO (JP)
KURAMOTO GO (JP)
TSUNEKAWA HIROKAZU (JP)
ENDO KEN (JP)
FUJIMOTO MASAHIRO (JP)
UCHIDA KEISUKE (JP)
IWATANI SHINGO (JP)
ENDO TAKAHITO (JP)
KURAMOTO GO (JP)
TSUNEKAWA HIROKAZU (JP)
ENDO KEN (JP)
International Classes:
B23K33/00; B23K31/00; F16H48/40; F16H55/17; G01B17/00; B23K9/00; F16H48/38; G01N29/04
Foreign References:
| JPS514736A | 1976-01-16 | |||
| JPH0314066U | 1991-02-13 | |||
| JPS5575888A | 1980-06-07 | |||
| JPS6162663A | 1986-03-31 | |||
| JP2001153009A | 2001-06-05 |
Attorney, Agent or Firm:
COSMOS PATENT OFFICE (JP)
Patent business corporation cosmos patent firm (JP)
Patent business corporation cosmos patent firm (JP)
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