Title:
ROTARY MACHINING TOOL
Document Type and Number:
WIPO Patent Application WO/2016/084710
Kind Code:
A1
Abstract:
[Problem] To provide a rotary machining tool with improved durability of a section, which configures a cushioning function for mitigating reaction forces that a machining member receives during machining work. [Solution] A rotation-driving shaft 16 that is connected to and driven by an air motor 12 comprises a first shaft 22, a second shaft 24, and a coil spring 40 that is set between the first shaft 22 and the second shaft 24 and allows movement of the second shaft 24 towards the first shaft 22 while being elastically deformed. The front end 22b of the first shaft 22 and the base end 24a of the second shaft 24 have a first sliding surface 28a and a second sliding surface 30a that extend parallel to the longitudinal axis line L of the rotation-driving shaft 16. By said first sliding surface 28a sliding and engaging with said second sliding surface 30a, the second shaft 24 is able to move relative to the first shaft 22 in the direction of the longitudinal axis line L but is fixed relative to the first shaft in the rotation direction of the rotation-driving shaft 16.
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Inventors:
AOKI RYOCHI (JP)
MURAKAMI KEIICHI (JP)
MURAKAMI KEIICHI (JP)
Application Number:
PCT/JP2015/082585
Publication Date:
June 02, 2016
Filing Date:
November 19, 2015
Export Citation:
Assignee:
NITTO KOHKI CO (JP)
International Classes:
B25F5/00; B23B45/00; B24B23/02
Foreign References:
| JP2011036972A | 2011-02-24 | |||
| JP2000135636A | 2000-05-16 | |||
| JP2003191154A | 2003-07-08 |
Other References:
See also references of EP 3156187A4
Attorney, Agent or Firm:
ITOH, Shigeru et al. (JP)
Shigeru Ito (JP)
Shigeru Ito (JP)
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