Title:
自動工具交換装置におけるドローバー位置検出器
Document Type and Number:
Japanese Patent JP2007500084
Kind Code:
A
Abstract:
Disclosed is an apparatus for detecting a position of a drawbar unit installed in a spindle unit. The apparatus is a part of an automatic tool exchange device for exchanging tools in the spindle unit of a machine tool. The apparatus transmits a signal to a main controller after detecting the position of the drawbar such that the main controller checks a state of a tool clamped by the drawbar unit. The drawbar unit is installed in the spindle unit forming the automatic tool exchange device and clamps the tool at a front thereof. A core is installed at a rear peripheral portion of the drawbar unit and a coil section having a cylindrical shape is wound around an outer peripheral portion of the core. An LC oscillating circuit is provided such that the LC oscillating circuit includes the coil section as a part thereof. An oscillating frequency of the LC oscillating circuit varies depending on a position of the core made of magnetic material, so the apparatus detects the position of the drawbar unit based on the oscillating frequency of the LC oscillating circuit. A position detecting section transmits present position information of the drawbar unit to a main controller, so the main controller detects the present position of the drawbar unit.
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Inventors:
Hyun Young-Jin
Application Number:
JP2006521776A
Publication Date:
January 11, 2007
Filing Date:
February 13, 2004
Export Citation:
Assignee:
Iwon Engineering Incorporated
International Classes:
B23B31/00; B23B31/117; B23B31/26; B23Q3/155; B23Q17/00
Domestic Patent References:
| JPH02116712A | 1990-05-01 | |||
| JPH08197313A | 1996-08-06 | |||
| JPH07251305A | 1995-10-03 | |||
| JPH10225847A | 1998-08-25 |
Attorney, Agent or Firm:
Masatsugu Suzuki
Kenichi Wakui
Norihiro Yamamoto
Kazunaga Suzuki
Kenichi Wakui
Norihiro Yamamoto
Kazunaga Suzuki