Title:
MAIN SPINDLE DEVICE FOR MACHINE TOOL
Document Type and Number:
Japanese Patent JPH11254212
Kind Code:
A
Abstract:
To constantly grasp the restraint quanity of a tool.
A displacement sensor 1 for detecting the distance between the flange surface 6a of a tool holder 6 and a main spindle 3 is embedded in a nose end surface 3a of the end of the main spindle 3 and it is outputted from a slip ring 8 fitted to the rear end of a tool lifting shaft 4 to an external NC device by connecting the detected signal to the slip ring 8 by inserting a signal line 7 into through holes 12, 13 provided in the interior of the main spindle 3 and the tool lifting shaft 4.
Inventors:
NAKANO TAKUYA
Application Number:
JP6358898A
Publication Date:
September 21, 1999
Filing Date:
March 13, 1998
Export Citation:
Assignee:
OKUMA MACHINERY WORKS LTD
International Classes:
B23Q15/18; B23B19/02; B23B31/00; B23B31/02; B23B31/117; B23Q17/22; (IPC1-7): B23B31/02; B23B19/02; B23B31/117; B23Q15/18; B23Q17/22
Attorney, Agent or Firm:
Ishida Kiki
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