Title:
WORKPIECE POSITION DETECTING METHOD AND MACHINE TOOL
Document Type and Number:
WIPO Patent Application WO/2020/065854
Kind Code:
A1
Abstract:
Provided is a workpiece position detecting method comprising the steps of: reading shape data of a workpiece (W); obtaining a first image by imaging the workpiece (W) from a first direction; dividing the first image to a first region having a luminosity value within a predetermined range and a second region having a luminosity value out of the predetermined range; comparing the shape data with the first image in the first region wherein the comparison provides a position and a direction of the workpiece (W) in a mechanical coordinate system of a machine tool; determining, on the basis of the shape data arranged in the provided position and the direction, whether or not the shape data contains a characteristic shape (CS) in the second region; obtaining second image by imaging the workpiece (W) from a second direction; and collating the shape data with the second image in the second region when it is determined that the shape data contains the characteristic shape (CS) in the second region.
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Inventors:
KASAHARA TADASHI (JP)
FURUTA MEGUMI (JP)
FURUTA MEGUMI (JP)
Application Number:
PCT/JP2018/036052
Publication Date:
April 02, 2020
Filing Date:
September 27, 2018
Export Citation:
Assignee:
MAKINO MILLING MACHINE (JP)
International Classes:
B23Q17/24
Domestic Patent References:
| WO2008026723A1 | 2008-03-06 |
Foreign References:
| JP2010058264A | 2010-03-18 | |||
| JP2010061661A | 2010-03-18 | |||
| US20180018778A1 | 2018-01-18 | |||
| JP2011075311A | 2011-04-14 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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