Small machine tool
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United States of America Patent
Stats
-
Mar 29, 2016
Grant Date -
Oct 31, 2013
app pub date -
Apr 30, 2012
filing date -
Apr 30, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A small machine tool includes a hollow housing, a holder located in the hollow housing and a driving unit coupled with the holder. The hollow housing has a holding portion and an aperture run through by a tool head. The holder has a coupling portion connected to the holding portion and a hollow shaft portion coaxial with the aperture. The hollow shaft portion includes an ancillary support member and at least one ancillary rotary member. The driving unit includes a stator coupled on the hollow shaft portion, a rotor located outside the stator and a spindle having two ends respectively coupling with the rotor and tool head and running through the hollow shaft portion, ancillary support member and ancillary rotary member. The spindle is driven by the rotor to drive the tool head to rotate.
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