MACHINE TOOL
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United States of America Patent
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N/A
Issued Date -
Feb 5, 2009
app pub date -
Sep 11, 2006
filing date -
Sep 9, 2005
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A machine tool comprises a shrink fit holder fixed to a lower end of a rotatable spindle, and a high frequency induction heating unit configured to heat the shrink fit holder by high frequency induction. The high frequency induction heating unit is configured to move between a retracted position and the shrink fit holder by a Z axis carriage and a V axis carriage. The retracted position is a position where the high frequency induction heating unit is separated from the shrink fit holder to such an extent that there is no obstruction to machining. A cooling unit is provided on the high frequency induction heating unit, the cooling unit being configured to supply compressed air for cooling the shrink fit holder. A supply pot and a collection pot are provided side by side and are configured to respectively hold a tool. These pots are configured to move between their retracted positions and the shrink fit holder.
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