Patents by Inventor WERNER BRUNO PENKERT
WERNER BRUNO PENKERT has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20220281017Abstract: The invention relates to a method for producing a blisk comprising a plurality of blade profiles and channels extending between the blade profiles using a bell-type countersink having a conical lateral surface, wherein the method comprises the steps providing a disk-shaped blank, and, to form the channels in the blank, plunging the bell-type countersink into the blank on a lateral surface of the blank and thereby moving it in a direction along a generating line of the bell-type countersink, wherein the displacement of the bell-type countersink is a 3-axial movement on a linear path and/or a 5-axial movement on a curved path. The invention also relates to a bell-type countersink.Type: ApplicationFiled: March 3, 2022Publication date: September 8, 2022Inventors: Werner Bruno Penkert, Alex Fraese, Peter Gerstner
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Patent number: 11298760Abstract: A tool body (12) for a shell end mill (10) is described with at least one helical chip guiding groove (24) arranged at the circumference of the tool body (12) for chip dissipation and at least two receptacles (28) for indexable cutting inserts (26) arranged at the chip guiding groove (24). In this case, the receptacles (28) each comprise a base surface having a bore for receiving an indexable cutting insert fastening screw (34) and at least one first abutment surface adjacent to the base surface. The transition between the base surface and the first contact surface is a groove. In addition, a cutting tool is described with such a tool body, wherein a two-sided indexable cutting insert (26) is attached in each receptacle (28).Type: GrantFiled: February 10, 2020Date of Patent: April 12, 2022Assignee: KENNAMETAL INC.Inventors: Alex Fraese, Mark Alan Francis, Werner Bruno Penkert, Michael Kreuzer
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Publication number: 20200180048Abstract: A tool body (12) for a shell end mill (10) is described with at least one helical chip guiding groove (24) arranged at the circumference of the tool body (12) for chip dissipation and at least two receptacles (28) for indexable cutting inserts (26) arranged at the chip guiding groove (24). In this case, the receptacles (28) each comprise a base surface having a bore for receiving an indexable cutting insert fastening screw (34) and at least one first abutment surface adjacent to the base surface. The transition between the base surface and the first contact surface is a groove. In addition, a cutting tool is described with such a tool body, wherein a two-sided indexable cutting insert (26) is attached in each receptacle (28).Type: ApplicationFiled: February 10, 2020Publication date: June 11, 2020Applicant: Kennametal Inc.Inventors: Alex Fraese, Mark Alan Francis, Werner Bruno Penkert, Michael Kreuzer
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Patent number: 10556278Abstract: A tool body (12) for a shell end mill (10) is described with at least one helical chip guiding groove (24) arranged at the circumference of the tool body (12) for chip dissipation and at least two receptacles (28) for indexable cutting inserts (26) arranged at the chip guiding groove (24). In this case, the receptacles (28) each include a base surface having a bore for receiving an indexable cutting insert fastening screw (34) and at least one first abutment surface adjacent to the base surface. The transition between the base surface and the first contact surface is a groove. In addition, a cutting tool is described with such a tool body, wherein a two-sided indexable cutting insert (26) is attached in each receptacle (28).Type: GrantFiled: August 16, 2016Date of Patent: February 11, 2020Assignee: KENNAMETAL INC.Inventors: Alex Fraese, Mark Alan Francis, Werner Bruno Penkert, Michael Kreuzer
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Publication number: 20180050397Abstract: A tool body (12) for a shell end mill (10) is described with at least one helical chip guiding groove (24) arranged at the circumference of the tool body (12) for chip dissipation and at least two receptacles (28) for indexable cutting inserts (26) arranged at the chip guiding groove (24). In this case, the receptacles (28) each comprise a base surface having a bore for receiving an indexable cutting insert fastening screw (34) and at least one first abutment surface adjacent to the base surface. The transition between the base surface and the first contact surface is a groove. In addition, a cutting tool is described with such a tool body, wherein a two-sided indexable cutting insert (26) is attached in each receptacle (28).Type: ApplicationFiled: August 16, 2016Publication date: February 22, 2018Applicant: Kennametal Inc.Inventors: Alex Fraese, Mark Alan Francis, Werner Bruno Penkert, Michael Kreuzer
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Patent number: 9387537Abstract: A wedge clamp includes a top wall, a bottom wall, a front wall, a rear wall opposite the front wall, and a fluid port traversing from the front wall to the rear wall. The fluid port has a front opening and a rear opening to allow cooling fluid to pass therethrough. In one embodiment, the front opening is a rounded isosceles trapezoid in shape with a pair of parallel substantially planar side walls of different length and a pair of arcuate side walls connecting the pair of planar side walls. The rear opening has a greater surface area proximate the rear wall and a smaller surface area proximate the front opening, resulting in a funnel-shaped opening to cause an increase in velocity of the cooling fluid passing through the fluid port.Type: GrantFiled: March 28, 2014Date of Patent: July 12, 2016Assignee: KENNAMETAL INC.Inventors: Brad Daniel Hoffer, Michael Glenn Morrison, Werner Bruno Penkert
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Publication number: 20150273589Abstract: A wedge clamp includes a top wall, a bottom wall, a front wall, a rear wall opposite the front wall, and a fluid port traversing from the front wall to the rear wall. The fluid port has a front opening and a rear opening to allow cooling fluid to pass therethrough. In one embodiment, the front opening is a rounded isosceles trapezoid in shape with a pair of parallel substantially planar side walls of different length and a pair of arcuate side walls connecting the pair of planar side walls. The rear opening has a greater surface area proximate the rear wall and a smaller surface area proximate the front opening, resulting in a funnel-shaped opening to cause an increase in velocity of the cooling fluid passing through the fluid port.Type: ApplicationFiled: March 28, 2014Publication date: October 1, 2015Applicant: Kennametal Inc.Inventors: Brad Daniel Hoffer, Michael Glenn Morrison, Werner Bruno Penkert
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Patent number: 9085034Abstract: A method for milling a blank in the production of a turbine blade which in the final state has at least one blade root for fastening to a carrier and also an adjoining blade body extending in the longitudinal direction includes clamping the blank on its root side in a mount and machining the blank with a milling cutter. Machining the blank includes moving the milling cutter in an advancing direction for roughing machining while superimposing a circular movement as per a trochoidal milling method.Type: GrantFiled: August 22, 2012Date of Patent: July 21, 2015Assignee: KENNAMETAL INCInventors: Uwe Hobohm, Mario Stromeyer, Werner Bruno Penkert
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Publication number: 20130051949Abstract: A method for milling a blank in the production of a turbine blade which in the final state has at least one blade root for fastening to a carrier and also an adjoining blade body extending in the longitudinal direction includes clamping the blank on its root side in a mount and machining the blank with a milling cutter. Machining the blank includes moving the milling cutter in an advancing direction for roughing machining while superimposing a circular movement as per a trochoidal milling method.Type: ApplicationFiled: August 22, 2012Publication date: February 28, 2013Applicant: KENNAMETAL, INC.Inventors: UWE HOBOHM, MARIO STROMEYER, WERNER BRUNO PENKERT