Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
UNAUTHORIZED MOVE DETECTION APPARATUS, MACHINE TOOL AND ACTION RESTRICTING METHOD
Document Type and Number:
Japanese Patent JP2009205317
Kind Code:
A
Abstract:

To provide an unauthorized move detection apparatus, a machine tool and an action restricting method with a simple composition in which an independent power source is not necessary for move detection.

The state of a magnetic field in an installation place P for the machine tool (device) 1 is detected by a magnetic field state detection means 130 and whether or not the device 1 is moved or not is determined based on the magnetic field state detected by the magnetic field state detection means 130 after the power source 90 is turned on from off and the magnetic field state detected by the magnetic field state detection means 130 before the power source is turned off. Furthermore, when the machine tool 1 is determined to be moved, an action of a moving section 40 is restricted.


Inventors:
OHASHI TETSUO
Application Number:
JP2008045454A
Publication Date:
September 10, 2009
Filing Date:
February 27, 2008
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
STAR MFG CO
International Classes:
G08B13/22; G05B19/18
Attorney, Agent or Firm:
Toshiyuki Yokoi
Takeshi Ikeda
Ryohei Imai