Machine tool
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United States of America Patent
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Issued Date -
Aug 31, 2006
app pub date -
Jan 23, 2004
filing date -
Jan 31, 2003
priority date (Note) -
Abandoned
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Abstract
The present invention relates to a machine tool including a moving parts that move in predetermined directions, wherein the moving parts are made of metal obtained by gradually cooling and solidifying along a predetermined orientation melted metal in which gas atoms have been dissolved, wherein numerous slender voids extending along the predetermined orientation are formed by precipitating the gas atoms through a decrease in the dissolved amount of gas atoms accompanying a decrease in the temperature of the metal; accordingly, the moving member is constituted of so-called porous metal. The machine tool thus not only has lightened moving parts, it also has excellent vibration damping and thermal properties, making it suitable for high speed machining.
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