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US 9,227,248 B2Granted
Metal cutting tool and cutting plate provided in the shape of a donut
AssigneeCeramTec GmbH
InventorsOtto Eder, Wolfgang Zitzlaff
Life of this patent
Estimating the term…
Abstract
A metal cutting tool has a supporting tool, which has a recess for accommodating a cutting plate. The cutting plate is provided with a damping trough, which is held in the supporting tool by a clamping claw. The clamping claw is fixed against the supporting tool by a clamping screw. A pressure piece is placed on the clamping claw and its underside facing the cutting plate is provided with a cam, which is in contact with the clamping trough and the clamping claw pulls the pressure piece toward the clamping screw.
Claims2
A clamping device to clamp a circular cutting insert on a chip raising cutting tool comprising:
- a clamp;
- a pressure piece
- a supporting tool having a circular recess to receive said cutting insert,
- a set screw for affixing said clamp on said supporting tool by a set screw, wherein said pressure piece is disposed on said clamp, wherein said pressure piece has a bottom side facing a surface of said cutting insert which comprises a spherical elevation on said surface of said cutting inert and a circular ring surrounding said spherical elevation;
- wherein said bottom side of said pressure piece facing said cutting insert has a circular cam thereon which engages a clamping trough of said cutting insert when in a clamped position.
2 more elements
A
- pressure piece for a cutting tool that holds a cutting insert, said pressure piece having a side facing the cutting insert and a side facing away from said cutting insert, said side having a spherical depression and a raised part on said side facing away from said cutting insert, said raised part being positioned on an outer contour of said side facing away from said insert;
- and
- wherein said side facing said cutting insert comprises a bearing surface and a circular elevation.
Dependencies are inferred from the claim text.