Quick-change system for a tool holder
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United States of America Patent
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Feb 21, 2017
Grant Date -
Oct 23, 2014
app pub date -
Apr 15, 2014
filing date -
Apr 18, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A quick-change system for a tool holder comprises a machine-side receiving fixture having a hollow-cylindrical extension on which a switching sleeve is displaceably held. Automatic angular alignment of the tool holder upon introduction into the hollow-cylindrical extension of the receiving fixture is enabled by an alignment of the points of the star-shaped end face on the cylindrical holding portion of the tool holder, upon impact against a first set of three balls angularly spaced 120° apart. Once the tool holder has aligned itself in this way, then the first balls make their way into the longitudinal grooves of the cylindrical holding portion, whereby a rotationally fixed coupling is achieved. Upon the further insertion into the hollow-cylindrical extension, an axial securement finally occurs when a second set of three balls are displaced radially inward into associated depressions on the cylindrical holding portion.
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