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Patent Searching and Data


Title:
METHOD AND APPARATUS FOR CRANKPIN PHASE INDEXING
Document Type and Number:
WIPO Patent Application WO/1998/021007
Kind Code:
A1
Abstract:
A crankpin phase indexing apparatus for indexing a crankpin on an axis of a main spindle in a crankpin grinding machine, and a method therefor. The apparatus comprises a main spindle (22) having a chuck body (25), a phase rotating shaft (53) deviating from the axis of the main spindle, a coupling (63) detachably connecting the chuck body and the phase rotating shaft to each other, and a clamp (40) for restraining rotation of the phase rotating shaft. At the time of processing, the clamp is released and the coupling is placed in a connecting condition whereby the chuck body and the phase rotating shaft are unitarily rotated simultaneously with rotation of the main spindle. At the time of indexing, the clamp is actuated and the coupling is placed in a released condition whereby the chuck body is rotated about the main spindle relative to the phase rotating shaft in keeping with rotation of the main spindle. Accordingly, a crankshaft caught by the chuck body can be indexed to a predetermined phase while maintained in a position relative to the axis of the main spindle where it was prior to indexing.

Inventors:
UCHIDA HIROYUKI (JP)
KOKAJI YUKIO (JP)
Application Number:
PCT/JP1996/003307
Publication Date:
May 22, 1998
Filing Date:
November 11, 1996
Export Citation:
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Assignee:
NIPPEI TOYAMA CORP (JP)
UCHIDA HIROYUKI (JP)
KOKAJI YUKIO (JP)
International Classes:
B23Q16/02; B24B5/42; (IPC1-7): B24B5/42; B23Q16/02
Foreign References:
JPS58121638U1983-08-18
JPS5151080A1976-05-06
JPS59132749U1984-09-05
JPH0788709A1995-04-04
JPS5628811U1981-03-18
JPS5880150U1983-05-31
Other References:
See also references of EP 0900629A4
Attorney, Agent or Firm:
Onda, Hironori (Ohmiya-cho 2-chome Gifu-shi, Gifu-ken 500, JP)
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