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1. (WO2018198362) CHUCK DEVICE

Pub. No.:    WO/2018/198362    International Application No.:    PCT/JP2017/017062
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Sat Apr 29 01:59:59 CEST 2017
IPC: B23Q 11/10
B23B 47/00
B23Q 3/12
Applicants: BIG DAISHOWA CO., LTD.
BIG DAISHOWA株式会社
BIG DAISHOWA SEIKI CO., LTD.
大昭和精機株式会社
Inventors: DOI Masayuki
土居正幸
Title: CHUCK DEVICE
Abstract:
Provided is a chuck device that allows the discharging direction of a working fluid to be set appropriately and easily. This chuck device is mounted to a rotary main spindle of a machine tool and holds a tool B, the chuck device being provided with: a passage (3b) through which a working fluid flows inside the chuck device; and a discharge port (3a) which is the end opening of the passage (3b) and from which the working fluid is discharged toward the tool B, wherein the discharging direction of the working fluid from the discharge port (3a) is set to be opposite to a rotation direction Rd of the tool B and to be inclined at an angle θ, calculated by mathematical formula, in the tangential direction of a rotation trajectory of the center of the discharge port (3a) with reference to the axial center direction of the tool B.