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Rotary Cutting Tool

Patent No. EP3848173 (titled "Rotary Cutting Tool") was filed by Union Tool on Dec 22, 2020. The application was issued on Aug 16, 2023.

Patent Summary

A rotary cutting tool for hard, brittle materials (e.g., ceramic, glass, cemented carbide) comprises a tool body with a chip discharge groove and a tip end section coated with a hard film. A concave rake face is provided in the cutting edge-side chip discharge groove formation surface, extending from and along the cutting edge. The tool is characterized by a level-difference surface connecting the rake face and the chip discharge groove formation surface. This level-difference surface is positioned at a distance of 30 $\mu$m to 350 $\mu$m from the cutting edge to optimize chip curling and division, prevent chip accumulation near the edge, and suppress edge chipping and tool damage while improving machining efficiency.

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CompanyOpposition DateRepresentative
ROLLOMATICMay 16, 2024GEITZ PATENTANWALTE PARTG MBB

Dossier Documents

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EP3848173

UNION TOOL
Application Number
EP20216740A
Filing Date
Dec 22, 2020
Status
Granted And Under Opposition
Jul 14, 2023
Publication Date
Aug 16, 2023
External Links
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