Drill cutting insert
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Mar 7, 2017
Issued Date -
N/A
app pub date -
Jul 3, 2012
filing date -
Jul 5, 2011
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A drill cutting insert has a cutting edge at a transition between a side surface and a top side which is formed with n identical cutting corners and n identical partial cutting edges —with nε{3, 4} —extending between the cutting corners. Each of the n partial cutting edges has: adjoining a first cutting corner, a main lip which is straight in plan view of the top side; adjoining the other cutting corner, a secondary lip which is straight in plain view of the top side, and a transition section, via which the main lip and the secondary lip merge into one another and which has a convex section adjoining the main lip and a concave section adjoining the secondary lip. The main and secondary lips enclose on the outside an angle a α<180° in plan view of the top side.
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