Title:
ROTARY WORK MACHINE
Document Type and Number:
Japanese Patent JP2016198844
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a rotary work machine capable of easily executing replacement work of a wheel, and also restraining falling-off of a collar.SOLUTION: An outer peripheral surface of a spindle outer peripheral part 31 is not flatly formed in the direction along the spindle central axis (the central axis) X, and a step difference part 31A is provided on this outer peripheral surface. An annular ring-shaped O ring 32 constituted of an elastic body is installed in two places along the spindle central axis X on a cylindrical outer peripheral surface of the spindle outer peripheral part 31 on the root side more than the step difference part 31A. In a state of installing a collar 45 in a spindle 30 (the spindle outer peripheral part 31) as indicated in Fig.3(b), an inner surface of the collar 45 and the O ring 32 abut on the root side more than the step difference part 31A, and the O ring 32 is elastically deformed thereby, and the inner surface of the collar 45 is supported by its stress.SELECTED DRAWING: Figure 3
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Inventors:
HAGAWA TATSUYA
Application Number:
JP2015079955A
Publication Date:
December 01, 2016
Filing Date:
April 09, 2015
Export Citation:
Assignee:
HITACHI KOKI KK
International Classes:
B24B47/26; B23D45/16; B23D47/00; B23D61/02; B25F5/00; B27B5/32; B27B9/00
Domestic Patent References:
| JP2003053626A | 2003-02-26 |
Attorney, Agent or Firm:
Shiroyuki Hori
Yukihiko Maejima
Akira Hasegawa
Daiyu Murakami
Yukihiko Maejima
Akira Hasegawa
Daiyu Murakami