Title:
TOOL CLAMPING DEVICE
Document Type and Number:
Japanese Patent JP2003225812
Kind Code:
A
Abstract:
To provide a tool clamping device capable of positively discriminating whether or not a tool holder is clamped on a main spindle.
Whether or not the tool holder TH is clamped on the main spindle 1 is positively discriminated by lightly contacting the lower end face of a piston rod 4B of a cylinder device 4 on the upper end face of a draw bar 2 and detecting a vertical positional change of a dog 18 fixed to the upper end part of the piston rod 4B protruding above a cylinder 4C by sensors 19A and 19B.
Inventors:
SAIDA KUNIHIRO
MURAI SHIRO
OKUYAMA TETSUO
KAWAZU TOMOYUKI
MURAI SHIRO
OKUYAMA TETSUO
KAWAZU TOMOYUKI
Application Number:
JP2002028345A
Publication Date:
August 12, 2003
Filing Date:
February 05, 2002
Export Citation:
Assignee:
NIPPEI TOYAMA CORP
International Classes:
B23B31/117; B23B31/00; (IPC1-7): B23B31/117; B23B31/00
Attorney, Agent or Firm:
Dozo Isono
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