Title:
CHIP/DUST PREVENTION COVER, CHIP/DUST PREVENTION COVER SET, CHUCK MECHANISM, AND MACHINE TOOL
Document Type and Number:
WIPO Patent Application WO/2018/092797
Kind Code:
A1
Abstract:
The purpose of the present invention is to prevent intrusion of chips into gaps formed between inner end surfaces of master jaws and a chuck cover. A top plate (310) is disposed at the center of an end surface (112) of a chuck body (110). Top covers (360), which move in conjunction with movements of master jaws (120) when opening and closing the chuck, are disposed in top cover guide recesses (330) formed at three positions on the top plate (310). Each top cover (360) abuts the center-side end parts of serrated surfaces (125, 126) formed on both widthwise sides of a respective master jaw (120) and the center-side end part of a step section (240) of a stepped claw (200) therebetween, and the top covers (360) close gaps formed at the center-side end parts by the movements of the master jaws (200) at all times by moving in conjunction with movement of the master jaws (120).
Inventors:
ISHIKAWA YOSHIAKI (JP)
Application Number:
PCT/JP2017/041069
Publication Date:
May 24, 2018
Filing Date:
November 15, 2017
Export Citation:
Assignee:
SYNTHE TECH INC (JP)
International Classes:
B23B31/00; B23Q11/08
Foreign References:
| JPH04136603U | 1992-12-18 | |||
| JPS479184Y1 | 1972-04-07 | |||
| JP2001277012A | 2001-10-09 | |||
| US2903268A | 1959-09-08 | |||
| JP6233827B1 | 2017-11-22 | |||
| JP4273218B2 | 2009-06-03 |
Other References:
See also references of EP 3466575A4
Attorney, Agent or Firm:
MAEDA & SUZUKI (JP)
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