Title:
CUTTING MACHINE AND EMERGENCY STOP METHOD OF MOTOR
Document Type and Number:
WIPO Patent Application WO/2013/046522
Kind Code:
A1
Abstract:
First, second and third sensors 11, 12 and 13 emit electromagnetic waves, receive electromagnetic waves emitted by the first, second and third sensors 11, 12 and 13 and reflected by an object 9 or electromagnetic wave emitted by the object 9 that received the electromagnetic waves emitted by the first, second and third sensors 11, 12 and 13, and specify distances between themselves and the object 9, respectively, based on time differences between emissions and receptions of the electromagnetic waves, and a control section 3 specifies three-dimensional coordinates of the object 9 based on the distances between the respective sensors 11, 12 and 13 and the object 9, determines whether or not the three-dimensional coordinate of the object 9 falls within a predetermined region and stops a motor when the three-dimensional coordinates of the object 9 falls within the region.
Inventors:
TAKANO NOBUHIRO (JP)
USHIWATA SHIGEHARU (JP)
OZAWA HIROMI (JP)
KAWANO YOSHIKAZU (JP)
USHIWATA SHIGEHARU (JP)
OZAWA HIROMI (JP)
KAWANO YOSHIKAZU (JP)
Application Number:
PCT/JP2012/005047
Publication Date:
April 04, 2013
Filing Date:
August 08, 2012
Export Citation:
Assignee:
HITACHI KOKI KK (JP)
TAKANO NOBUHIRO (JP)
USHIWATA SHIGEHARU (JP)
OZAWA HIROMI (JP)
KAWANO YOSHIKAZU (JP)
TAKANO NOBUHIRO (JP)
USHIWATA SHIGEHARU (JP)
OZAWA HIROMI (JP)
KAWANO YOSHIKAZU (JP)
International Classes:
B27G19/02; F16P3/14
Domestic Patent References:
| WO2008028911A1 | 2008-03-13 | |||
| WO2011069721A1 | 2011-06-16 | |||
| WO2008028871A1 | 2008-03-13 |
Foreign References:
| EP1422022A1 | 2004-05-26 | |||
| JP2010023186A | 2010-02-04 |
Attorney, Agent or Firm:
TSUTSUI, Yamato (3F Shinjuku Gyoen Bldg. 3-10, Shinjuku 2-chome, Shinjuku-k, Tokyo 22, JP)
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Claims: