Patents Assigned to Hartmetall-Werkzeugfabrik Paul Hom GmbH
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Patent number: 11883884Abstract: Tool for machining a workpiece, comprising a cutting insert having at least one cutting edge, a cutting insert holder comprising a cutting insert receptacle for receiving the cutting insert, a clamping element acting as a clamping wedge, which can be fastened in the cutting insert receptacle for clamping the cutting insert in the cutting insert holder, a fastening element for fastening the clamping element in the cutting insert holder and simultaneously clamping the cutting insert in the cutting insert holder, and a sensor configured to generate a measurement signal that is dependent on a force acting on the cutting insert, wherein the clamping element comprises a recess in which the sensor is arranged.Type: GrantFiled: May 3, 2022Date of Patent: January 30, 2024Assignee: Hartmetall-Werkzeugfabrik Paul Hom GmbHInventor: Tobias Kemmler
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Patent number: 11801562Abstract: The present invention relates to a tool (10) for machining a workpiece, comprising a cutting head (12) which comprises a sleeve (16) and a cutting element (18) which is fixed to the sleeve (16), and comprising a holder (14) to which the cutting head (12) can be detachably fixed. In an assembled state of the tool (10), the cutting head (12) and holder (14) are screwed to each other via an internal thread (40) which is arranged in the sleeve (16) and an external thread (42) which corresponds thereto and which is arranged on the holder (14).Type: GrantFiled: April 28, 2020Date of Patent: October 31, 2023Assignee: Hartmetall-Werkzeugfabrik Paul Hom GmbHInventor: Markus Kannwischer
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Patent number: 11648613Abstract: Broaching tool comprising a cutting insert having a cutting edge and a holder for holding the cutting insert. The holder has a clamping region and a holding region, wherein the holding region comprises, at its end facing away from the clamping region, a seat for the cutting insert, which is configured and arranged such that, when the cutting insert is mounted in the seat, its cutting edge projects beyond the circumferential surface of the holding region. The holding region furthermore comprises, on its circumferential surface, a support for the cutting insert. A coolant channel extends into the inside of the holder, which coolant channel comprises two exit openings which, as seen in the circumferential direction, are arranged laterally adjacent to the support and/or in lateral surfaces of the support.Type: GrantFiled: March 16, 2020Date of Patent: May 16, 2023Assignee: Hartmetall-Werkzeugfabrik Paul Hom GmbHInventors: Andreas Kanz, Matthias Luik
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Patent number: 11559844Abstract: A whirling tool for machining a workpiece, having: three or a multiple of three cutting plates, wherein each of the cutting plates comprises at least one cutting edge; a cutting plate holder having a plurality of cutting plate receptacles, wherein each of the cutting plate receptacles is configured to receive one of the cutting plates, wherein the cutting plate receptacles are disposed so as to be distributed in a circumferential direction across the cutting plate holder; and a plurality of fastening elements for releasably fastening the cutting plates in the cutting plate receptacles of the cutting plate holder; wherein the cutting plates comprise at least two different kinds of cutting plates, wherein at least one cutting plate of a first kind, and one cutting plate of a second kind are provided for each group of three cutting plates that are disposed beside one another on the cutting plate holder, wherein the cutting plate of the first kind differs from the cutting plate of the second kind by an overall geType: GrantFiled: December 4, 2019Date of Patent: January 24, 2023Assignee: Hartmetall-Werkzeugfabrik Paul Hom GmbHInventor: Eckhard Wagner
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Patent number: 11278972Abstract: A cutting insert (10) for a tool (100) for machining a workpiece. The cutting insert (10) is a four-bladed cutting insert which is in the form substantially of a rhomboid. The cutting insert (10) has two identical, oppositely arranged base sides (14a, 14b) and four identical main sides (16a-16d) which extend between the two base sides (14a, 14b). Each of the four main sides (16a-16d) comprises a rectilinear main cutting edge (12a-12d) and a rectilinear secondary cutting edge (26a-26d) which is arranged transversely thereto. The main and secondary cutting edges (12a-12d) and (26a-26d) of each main side (16a-16d) lie in each case in a common cutting plane which is aligned parallel to a contact surface (28a-28d) which is also provided on the main sides (16a-16d).Type: GrantFiled: October 15, 2019Date of Patent: March 22, 2022Assignee: Hartmetall-Werkzeugfabrik Paul Hom GmbHInventor: Christian Stark
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Patent number: 10744576Abstract: A cutting insert for a milling tool, having a first side, a second side which is identical to the first side and a circumferential surface which extends between the first and the second sides, with a bore which extends along a bore axis. The cutting insert is 120° rotationally symmetrical with respect to the bore axis and includes on each of the first side and the second side three identically formed cutting regions, respectively, which are situated at a transition between the first side and the circumferential surface or at a transition between the second side and the circumferential surface, respectively.Type: GrantFiled: November 20, 2018Date of Patent: August 18, 2020Assignee: Hartmetall-Werkzeugfabrik Paul Hom GmbHInventor: Christian Stark