Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
CHUCK, STEPPED JAW, AND MACHINE TOOL
Document Type and Number:
WIPO Patent Application WO/2017/199584
Kind Code:
A1
Abstract:
[Problem] To provide, inter alia, a jaw that can be efficiently replaced, and that allows machining defects to be prevented. [Solution] A stepped section 240 having a planar trapezoid shape and having an undulating engagement surface formed on two end surfaces 245, 246 is installed on the lower surface of a soft jaw 210 to form a stepped jaw 200. In a jaw installation groove 123 of a master jaw 120, the stepped section 240 is gripped from both radial sides by a pair of grips 510, 540; and the stepped section 240 is pulled in towards the bottom of the jaw installation groove 123. The radial position of the soft jaw 310 is defined by an engagement between serration surfaces 124, 234 on the lower surface of the soft jaw 310 and the upper surface of the master jaw 120. The tangential position of the soft jaw 310 is defined by close contact of the stepped section 240 with the side surface of the jaw installation groove 123 that constitutes the base side of an isosceles trapezoid. The stepped jaw 300 and the grips 510, 540 are linked and fastened by a single clamp bolt 273. The stepped section 240 is linked to the soft jaw 310 from the lower surface; and no counterbores, etc., are present on the upper surface.

Inventors:
ISHIKAWA YOSHIAKI (JP)
Application Number:
PCT/JP2017/012280
Publication Date:
November 23, 2017
Filing Date:
March 27, 2017
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
SYNTHE TECH INC (JP)
International Classes:
B23B31/10; B23Q11/08
Foreign References:
JP2011167821A2011-09-01
JP2003175410A2003-06-24
JP2009012155A2009-01-22
Other References:
See also references of EP 3300821A4
Attorney, Agent or Firm:
MAEDA & SUZUKI (JP)
Download PDF: