Large-capacity spindle assemblies and collets for use in davenport multi-spindle screw machines
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United States of America Patent
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Jun 6, 2017
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N/A
app pub date -
Mar 31, 2016
filing date -
Mar 31, 2016
priority date (Note) -
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Abstract
An improved spindle assembly for a Davenport® multi-axis screw machine is adapted to adequately hold one-inch round bar-stock in a collet against movement relative thereto attributable to machining operations performed on a cantilevered length of bar-stock held in and extending beyond the collet. The spindle assembly may permit the use of the screw machine on materials thought heretofore to be too difficult to machine on a screw machine. Cam surfaces on the inner spindle and collet may be coated with a low-friction material. A stress-relieving connection between the inner spindle and collet is provided.
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