Title:
WORKPIECE GRIPPING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/085507
Kind Code:
A1
Abstract:
A workpiece gripping device (10) for securing a workpiece (90) on a table 114 of a machine tool (100) is provided with: a workpiece gripping unit (20) having at least three claws (12) which are disposed at equal intervals around a central axis line (Oc) to secure an outer peripheral part of the workpiece; a bar gripping member (38) which is mounted on the central axis line (Oc), and grips a bar (260) inserted into the workpiece (90) along the central axis line (Oc); and a retraction mechanism (64) for retracting the bar gripping member (38) along a central axis line (O) toward a table side.
Inventors:
BABA YASUNARI (JP)
ONO KOUJI (JP)
ISHII MASATO (JP)
MAEDA JUNICHI (JP)
UENO HIROSHI (JP)
ONO KOUJI (JP)
ISHII MASATO (JP)
MAEDA JUNICHI (JP)
UENO HIROSHI (JP)
Application Number:
PCT/JP2020/040523
Publication Date:
May 06, 2021
Filing Date:
October 28, 2020
Export Citation:
Assignee:
MAKINO MILLING MACHINE (JP)
International Classes:
B23Q7/04; B23Q3/06; B25J15/00
Domestic Patent References:
| WO2017056812A1 | 2017-04-06 |
Foreign References:
| JP2016005854A | 2016-01-14 | |||
| JP2005538854A | 2005-12-22 | |||
| CN104786080A | 2015-07-22 | |||
| JP2016087707A | 2016-05-23 |
Other References:
See also references of EP 4052842A4
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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