Machine tool

Patent metadata

Field	Value
Publication number	US-10086485-B2
Application number	US-201615166800-A
Country	US
Kind code	B2
Filing date	May 27, 2016
Priority date	May 29, 2015
Publication date	Oct 2, 2018
Grant date	Oct 2, 2018

Abstract

A machine tool includes: a spindle head; a spindle rotatably supported on the spindle head; a chuck unit configured to chuck a tool inserted in an axis direction of the spindle; a tool holder configured to hold the tool attached to the chuck unit; and a rotary arm configured to move the tool holder to a reachable position of the spindle. The tool holder is supported on the rotary arm by a support mechanism, and the support mechanism includes a displacement following mechanism configured to support the tool holder on the rotary arm in a manner to be capable of displacing the tool holder in a direction intersecting an axis of the tool.

First claim

What is claimed is:

1. A machine tool comprising:
a spindle head;
a spindle rotatably supported on the spindle head;
a tool attachable to the spindle;
a chuck unit provided to a tip of the spindle and configured to chuck the tool when the tool has been inserted in the chuck unit along a direction of a longitudinal center axis of the spindle;
a tool holder configured to hold the tool attached to the chuck unit;
a holder transfer mechanism configured to move the tool holder to a reachable position at which the tool holder is reachable by the spindle; and
a support mechanism configured to support the tool holder on the holder transfer mechanism, wherein
the support mechanism comprises a displacement following mechanism configured to support the tool holder on the holder transfer mechanism in a manner such that the tool holder is capable of displacement relative to the holder transfer mechanism in a first direction that is transverse relative to a longitudinal center axis of the tool, and in a second direction that is transverse relative to the longitudinal center axis of the tool and that is also transverse relative to the first direction,
wherein the displacement following mechanism comprises a member having a first elastically deformable leg elastically deformable in the first direction, the member further having a second elastically deformable leg at an opposite end of the member from the first elastically deformable leg, the second elastically deformable leg being elastically deformable in the second direction.

2. The machine tool according to claim 1 , wherein
the member comprises an L-shaped bracket.

3. The machine tool according to claim 1 , wherein
the support mechanism comprises a position adjusting mechanism configured to enable a position of the tool holder to be adjusted relative to the holder transfer mechanism.

4. The machine tool according to claim 3 , wherein
the position adjusting mechanism comprises portions positionally adjustable in two directions that each intersect the axis of the tool and intersect each other.

Assignees

• Toshiba Machine Co Ltd

Inventors

• Itani Shinya
• Tsukita Yutaka
• Masuda Hiromi
• Uchimura Hiroshi
• Kokubo Mitsunori

Classifications

• B23Q3/1554 Primary

  Transfer mechanisms, e.g. tool gripping arms; Drive mechanisms therefore · CPC title

• B23Q2003/155428

  about a common axis · CPC title

• B23Q2003/155421

  the grippers moving independently from each other · CPC title

• Y10T409/309464

  and draw bar · CPC title

• B23Q2003/155442

  radially to the pivoting axis · CPC title