Spindle device
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United States of America Patent
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Jun 9, 1998
Grant Date -
N/A
app pub date -
Jul 31, 1996
filing date -
Aug 11, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A spindle device for detecting the completion of an automatic tool changing procedure comprising a spindle (11) having a tool holder support portion (22) formed at the forward end thereof, a drawing bolt (17) with a through-hole (18) through which an air is blown in the vicinity of a tool holder support portion (22) of the spindle (11) for cleaning in the automatic tool changing procedure, and a pressure detection means (21) disposed in association with the through-hole (18) of the drawing bolt (17), wherein whether or not a tool holder (9) is suitably mounted on the tool holder mounting portion (22) is judged on the basis of an air blow pressure detected by the pressure detection means (21).
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