US 10,124,421 B2Granted

End milling cutter for heat-resistant superalloys

AssigneeWalter AG

InventorsPhilipp Leirer, Hans-Peter Hippler, Thomas Schaarschmidt

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Abstract

An end milling cutter for heat-resistant superalloys (HRSA) has a shank and a cutting head, which have a common rotation axis, the shank having a connection section for connection to the cutting head and a coupling section for connection to a tool holder, the cutting head consisting of a solid ceramic part, which has a rotationally symmetrical envelope and is butt-joined to an end face of the connection section. In order to keep excessive vibrations and thus stresses low in the interface between the cutting head and the connection section of the milling cutter and to create milling cutters that can also cover the diameter range above 12 mm and in particular above 20 mm and up to 32 mm, the coupling section has a conical peg having an external thread.

Claims17

Dependent claims

An end milling cutter for heat-resistant superalloys (HRSA) comprising a shank and a cutting head, which have a common axis of rotation,

wherein the shank is made of carbide metal and has a connecting portion for connection to the cutting head and a coupling portion for connection to a tool holder,
wherein the cutting head comprises a solid ceramic part having a rotationally symmetrical envelope, which part is butt-connected to an end face of the connecting portion, and
wherein the coupling portion has a conical peg with a male thread,
wherein a hard solder is used for the butt connection between the cutting head and the connecting portion, and
wherein the hard solder has composition comprising at least 55% and at most 60% of silver, at least 25% of and at most 30% of copper, and at least 1% and at most 2% of titanium.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/022,076Filed 21 Aug 2014
Priority: DE 10 2013 111 59621 Oct 2013
Published: US 2016/0228955 A111 Aug 2016
Granted: 13 Nov 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

B23C 5/10
Characterised by the shape of the cutter: shank-type cutters, i.e. with an integral shaft
B23C 5/28
Milling-cutters: features relating to lubricating or cooling
B23C 2210/02
Details of milling cutters: connections between the shanks and detachable cutting heads
B23C 2210/03
Details of milling cutters: cutting heads comprised of different material than the shank irrespective of whether the head is detachable from the shank