US 7,320,568 B2 | ||
Tool holder | ||
Masakazu Matsumoto, Osaka (Japan); Masahiro Taguchi, Osaka (Japan); and Kazuhiro Shimono, Osaka (Japan) | ||
Assigned to Nikken Kosakusho Works Ltd., Osaka (Japan) | ||
Filed on Nov. 10, 2006, as Appl. No. 11/595,693. | ||
Application 11/595693 is a division of application No. 11/264426, filed on Oct. 31, 2005, granted, now 7,165,923. | ||
Application 11/264426 is a division of application No. 10/387086, filed on Mar. 12, 2003, granted, now 7,037,053, filed on May 02, 2006. | ||
Claims priority of application No. 2002-73809 (JP), filed on Mar. 18, 2002; and application No. 2002-114147 (JP), filed on Apr. 17, 2002. | ||
Prior Publication US 2007/0053758 A1, Mar. 08, 2007 | ||
Int. Cl. B23C 5/00 (2006.01) |
U.S. Cl. 409—234 [408/153; 408/156] | 4 Claims |
1. A tool holder comprising:
a holder body having an elastically deformable tool attaching portion adapted to receive a tool;
a ring member rotatable about a center axis of the holder body but not movable along the center axis;
a cylindrical member adapted to be located adjacent to the ring member; and
a force generation mechanism provided in the ring member and adapted to generate a force in a direction substantially parallel
to the center axis to actuate the cylindrical member so that the tool attachment portion is elastically deformed in a radial
direction perpendicular to the center axis such that tip run-out of the tool approaches zero;
wherein the force generation mechanism comprises:
an operation member disposed within the ring member, the operation member extending radially through the ring member and being
rotatable about a radially extending axis; and
a ball element disposed within the ring member and located between the operation member and the holder body or the cylindrical
member;
wherein the operation member is rotated so as to adjust the force that the ball element applies to the holder body or the
cylindrical member, to thereby elastically deform the tool attaching portion in such a manner that tip run-out of the tool
approaches zero.
|