US 12,070,808 B2
Tribological optimized cutter tool for milling titanium or titanium alloys
Thomas C. Stinnett, Dallas, TX (US)
Assigned to LOCKHEED MARTIN CORPORATION, Bethesda, MD (US)
Appl. No. 16/965,198
Filed by LOCKHEED MARTIN CORPORATION, Bethesda, MD (US)
PCT Filed Feb. 4, 2019, PCT No. PCT/US2019/016531
§ 371(c)(1), (2) Date Jul. 27, 2020,
PCT Pub. No. WO2019/152936, PCT Pub. Date Aug. 8, 2019.
Claims priority of provisional application 62/625,465, filed on Feb. 2, 2018.
Prior Publication US 2021/0060669 A1, Mar. 4, 2021
Int. Cl. B23C 5/28 (2006.01); C23C 14/02 (2006.01); C23C 14/16 (2006.01)
CPC B23C 5/28 (2013.01) [C23C 14/021 (2013.01); C23C 14/024 (2013.01); C23C 14/16 (2013.01); B23C 2224/14 (2013.01); B23C 2226/12 (2013.01); B23C 2228/08 (2013.01); B23C 2228/10 (2013.01)] 22 Claims
OG exemplary drawing
 
9. A cutter tool comprising:
an end mill having an altered secondary relief with a standard style relief; and a duplex coating applied to the end mill having a bottom layer comprising an abrasion-resistant bottom coating (ARBC) wherein the bottom layer has an edge-prep and polished top surface, wherein the edge-prep at least partially comprises an alteration of one or more portions of one or more cutting edges of the end mill to a generally rounded configuration; and
a top layer comprising a friction reducing coating applied to the top surface of the bottom layer, the duplex coating includes a chemical composition which is inert toward titanium or titanium alloy to prevent or minimize titanium or titanium alloy adhesion to the end mill during milling operations of a metal object comprising the titanium or titanium alloy.