TOOL AND METHOD FOR CUTTING THREAD PRODUCTION
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United States of America Patent
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Issued Date -
Oct 9, 2014
app pub date -
Apr 1, 2014
filing date -
Apr 9, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A tap for cutting thread production can include a working region that is rotatable about a tool axis, and has a plurality of cutting teeth arranged on the tool circumference, wherein each cutting tooth has a cutting tooth head at a region that is radially farthest from the tool axis. The radial distance of the cutting tooth heads from the tool axis is substantially the same or decreases counter to an intended feed direction of the tool in a guide region of the working region, but increases counter to the intended feed direction of the tool in a starting region of the working region. Thus, in an axial cross section, the superimposed profiles of axially spaced-apart cutting teeth have a profile differential area. The radial cutting tooth profile boundary of the cutting teeth can be at least sectionally curved in the starting region.
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