Gear spindle and rolling mill provided with same
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United States of America Patent
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Jan 30, 2018
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app pub date -
Nov 14, 2013
filing date -
Dec 6, 2012
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Abstract
A gear spindle (3) obtained by inclining the axis of a spindle inner tube (10) provided at one end with an external cog inner tube gear section (40) at 0.6 degrees to 1.6 degrees with respect to the axis of a spindle outer tube (20) provided with an internal cog outer tube gear section (50) that meshes the inner tube gear section (40). On the teeth of the inner tube gear section (40) having a face width (B), a crowning of radius (Cr) is provided so that the center in the face width direction is expanded and both tooth ends are thin. The face width (B) and the crowning radius (Cr) are set within an area that is enclosed by graphs of (Cr)=1200 [mm], (Cr)=4000 [mm], (B)=0.0272×(Cr)+28 [mm], (B)=59.04×exp (0.0005×(Cr)) [mm], and (B)=32×(Cr)0.274 [mm].
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