Patents by Inventor Hans Peter Hollfelder
Hans Peter Hollfelder 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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Patent number: 11541465Abstract: The invention relates to a cutting tool comprising a main part that can be rotationally driven about a rotational axis, at least one cutting insert holder mounted on the main part such that it can be radially adjusted, and an adjusting device for adjusting the position of the cutting insert holder relative to the main part. The cutting insert holder is mounted in a guide recess in the main part such that it can be moved transversely, preferably radially, to the rotational axis, and the adjusting device has an adjusting element that is arranged such that it can be moved inside the main part transversely to the rotational axis and transversely to the displacement direction of the cutting insert holder and supports the cutting insert holder.Type: GrantFiled: January 24, 2020Date of Patent: January 3, 2023Assignee: Guehring KGInventors: Gerd Heckel, Hans-Peter Hollfelder, Juergen Thanner
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Patent number: 11504776Abstract: The invention relates to a cutting tool comprising a main part which extends along a longitudinal center axis or rotational axis, at least one cutting insert holder mounted on the main part such that it can be radially adjusted, and an adjusting device for adjusting the position of the cutting insert holder relative to the main part. The adjusting device comprises a threaded sleeve which is non-rotatably but axially movably mounted in the main part and a screw drive driving the threaded sleeve.Type: GrantFiled: January 24, 2020Date of Patent: November 22, 2022Assignee: Guehring KGInventors: Gerd Heckel, Hans-Peter Hollfelder, Juergen Thanner
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Patent number: 11491552Abstract: The invention relates to a cutting tool comprising a main part that can be rotationally driven about a rotational axis, at least one cutting insert holder mounted on the main part such that it can be radially adjusted, and an adjusting device for adjusting the position of the cutting insert holder relative to the main part. The cutting insert holder is mounted in a guide recess in the main part such that it can be moved transversely, preferably radially, to the rotational axis, and the adjusting device has a control rod that is arranged axially movable inside the main part and supports the cutting insert holder. The cutting tool can be of the multi-point cutting tool type. The invention also relates to a method for machining a bearing tunnel by means of such a multi-point cutting tool.Type: GrantFiled: January 24, 2020Date of Patent: November 8, 2022Assignee: Guehring KGInventors: Gerd Heckel, Hans-Peter Hollfelder, Juergen Thanner
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Patent number: 11453066Abstract: An adjusting device 17 for fine adjustment of a cutting support 14, which is adjustable on a basic body 12 of a cutting tool 10, relative to the basic body 12, with an adjusting screw 63 which determines the position of the cutting support 14 relative to the basic body 12. The adjusting device 17 comprises a threaded bushing 61 with which the set screw 63 is screwed and which has a wall segment 66 which is elastically deformable transversely to the socket axis 70, and a pressure element 64 arranged laterally of the threaded bushing 61 which presses the wall segment 66 against the set screw 63.Type: GrantFiled: January 24, 2020Date of Patent: September 27, 2022Assignee: Guehring KGInventors: Gerd Heckel, Hans-Peter Hollfelder, Juergen Thanner
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Patent number: 11426836Abstract: The invention relates to a roller burnishing tool 10 with a base body 12 extending along a longitudinal center axis 11, at least one roller holder 14 arranged radially adjustably on the base body 12, which holds a roller 15 rotatably, and an adjusting device 16 arranged in the base body 12 for adjusting the roller holder 14 cooperates in the radial direction with the roller holder 14. According to the invention, the roller holder 14 has a holder arm 18b holding the roller 15, which can be pivoted out in a radial direction by the adjusting device 16 relative to the base body 12 in a radial direction.Type: GrantFiled: January 24, 2020Date of Patent: August 30, 2022Assignee: Guehring KGInventors: Gerd Heckel, Hans-Peter Hollfelder, Juergen Thanner
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Publication number: 20220009004Abstract: The invention relates to a machine tool (1) comprising a clamping holder (10) which extends along a longitudinal axis (3) and a cutting element (20) that can be inserted into an open tool-side recess (40), which passes through the clamping holder (10), transversely to the longitudinal axis (3). The machine tool (1) has a stop (30) which is secured in the recess (40) and against which the cutting element (20) rests in the direction transverse to the longitudinal axis (3).Type: ApplicationFiled: July 20, 2021Publication date: January 13, 2022Applicant: Guehring KGInventor: Hans-Peter HOLLFELDER
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Patent number: 10821528Abstract: The invention relates to a cutting tool, in particular a rotating machining tool, comprising a support member, a cutting element that is releasably clamped to the support member, and a clamping jaw which is located on the support member, can be secured by means of a clamping screw and clamps the cutting element against the support member. According to the invention, a lifting element is provided between the support member and the clamping claw; when the clamping screw is unscrewed, said lifting element lifts the clamping jaw off the cutting element located on the support member.Type: GrantFiled: October 5, 2018Date of Patent: November 3, 2020Assignee: GUEHRING KGInventors: Hans-Peter Hollfelder, Juergen Thanner
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Publication number: 20200290129Abstract: The invention relates to a cutting tool comprising a main part that can be rotationally driven about a rotational axis, at least one cutting insert holder mounted on the main part such that it can be radially adjusted, and an adjusting device for adjusting the position of the cutting insert holder relative to the main part. The cutting insert holder is mounted in a guide recess in the main part such that it can be moved transversely, preferably radially, to the rotational axis, and the adjusting device has a control rod that is arranged axially movable inside the main part and supports the cutting insert holder. The cutting tool can be of the multi-point cutting tool type. The invention also relates to a method for machining a bearing tunnel by means of such a multi-point cutting tool.Type: ApplicationFiled: January 24, 2020Publication date: September 17, 2020Applicant: Guehring KGInventors: Gerd Heckel, Hans-Peter Hollfelder, Juergen Thanner
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Publication number: 20200282468Abstract: The invention relates to an adjusting device 17 for fine adjustment of a cutting support 14, which is adjustable on a basic body 12 of a cutting tool 10, relative to the basic body 12, with an adjusting screw 63 which determines the position of the cutting support 14 relative to the basic body 12. The adjusting device 17 comprises a threaded bushing 61 with which the set screw 63 is screwed and which has a wall segment 66 which is elastically deformable transversely to the socket axis 70, and a pressure element 64 arranged laterally of the threaded bushing 61 which presses the wall segment 66 against the set screw 63.Type: ApplicationFiled: January 24, 2020Publication date: September 10, 2020Applicant: Guehring KGInventors: Gerd HECKEL, Hans-Peter HOLLFELDER, Juergen THANNER
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Publication number: 20200261983Abstract: The invention relates to a cutting tool comprising a main part which extends along a longitudinal center axis or rotational axis, at least one cutting insert holder mounted on the main part such that it can be radially adjusted, and an adjusting device for adjusting the position of the cutting insert holder relative to the main part. The adjusting device comprises a threaded sleeve which is non-rotatably but axially movably mounted in the main part and a screw drive driving the threaded sleeve.Type: ApplicationFiled: January 24, 2020Publication date: August 20, 2020Applicant: Guehring KGInventors: Gerd HECKEL, Hans-Peter HOLLFELDER, Juergen THANNER
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Publication number: 20200261984Abstract: The invention relates to a cutting tool comprising a main part that can be rotationally driven about a rotational axis, at least one cutting insert holder mounted on the main part such that it can be radially adjusted, and an adjusting device for adjusting the position of the cutting insert holder relative to the main part. The cutting insert holder is mounted in a guide recess in the main part such that it can be moved transversely, preferably radially, to the rotational axis, and the adjusting device has an adjusting element that is arranged such that it can be moved inside the main part transversely to the rotational axis and transversely to the displacement direction of the cutting insert holder and supports the cutting insert holder.Type: ApplicationFiled: January 24, 2020Publication date: August 20, 2020Applicant: Guehring KGInventors: Gerd HECKEL, Hans-Peter Hollfelder, Juergen Thanner
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Publication number: 20200262026Abstract: The invention relates to a roller burnishing tool 10 with a base body 12 extending along a longitudinal center axis 11, at least one roller holder 14 arranged radially adjustably on the base body 12, which holds a roller 15 rotatably, and an adjusting device 16 arranged in the base body 12 for adjusting the roller holder 14 cooperates in the radial direction with the roller holder 14. According to the invention, the roller holder 14 has a holder arm 18b holding the roller 15, which can be pivoted out in a radial direction by the adjusting device 16 relative to the base body 12 in a radial direction.Type: ApplicationFiled: January 24, 2020Publication date: August 20, 2020Applicant: Guehring KGInventors: Gerd HECKEL, Hans-Peter HOLLFELDER, Juergen THANNER
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Publication number: 20190105719Abstract: The invention relates to a cutting tool, in particular a rotating machining tool, comprising a support member, a cutting element that is releasably clamped to the support member, and a clamping jaw which is located on the support member, can be secured by means of a clamping screw and clamps the cutting element against the support member. According to the invention, a lifting element is provided between the support member and the clamping claw; when the clamping screw is unscrewed, said lifting element lifts the clamping jaw off the cutting element located on the support member.Type: ApplicationFiled: October 5, 2018Publication date: April 11, 2019Applicant: GUEHRING KGInventors: Hans-Peter HOLLFELDER, Juergen THANNER
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Patent number: 8622662Abstract: The invention relates to a tool, in particular a revolving tool for machining, in particular metal cutting, workpieces, comprising a carrier body, a cutting body arranged detachably on the carrier body, and a clamping bracket for the positionally accurate fixation of the cutting body relative to the carrier body, wherein the cutting body is pressed against a supporting surface on the carrier body in a planar manner. According to the invention, the clamping bracket is integral with the carrier body and connected to the carrier body by way of a material joint. Furthermore, the cutting body is supported in the direction of the material joint on a face supporting surface of the clamping bracket, wherein the supporting surface is arranged on the carrier body at an acute angle (?) with respect to the face supporting surface of the clamping bracket and oriented in the direction of the material joint.Type: GrantFiled: June 24, 2011Date of Patent: January 7, 2014Assignee: Guehring OHGInventors: Gerd Heckel, Hans-Peter Hollfelder
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Publication number: 20120070241Abstract: The invention relates to a tool, in particular a revolving tool for machining, in particular metal cutting, workpieces, comprising a carrier body, a cutting body arranged detachably on the carrier body, and a clamping bracket for the positionally accurate fixation of the cutting body relative to the carrier body, wherein the cutting body is pressed against a supporting surface on the carrier body in a planar manner. According to the invention, the clamping bracket is integral with the carrier body and connected to the carrier body by way of a material joint. Furthermore, the cutting body is supported in the direction of the material joint on a face supporting surface of the clamping bracket, wherein the supporting surface is arranged on the carrier body at an acute angle (?) with respect to the face supporting surface of the clamping bracket and oriented in the direction of the material joint.Type: ApplicationFiled: June 24, 2011Publication date: March 22, 2012Applicant: Guehring OHGInventors: Gerd HECKEL, Hans-Peter Hollfelder
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Patent number: 6558087Abstract: A machine tool, which is also suitable for high-speed machining in metal cutting, for which at least one cutting body is held by a clamping device in a plate seat of a tool holder, which is bounded only by a back pressure supporting surface and by a supporting surface, the supporting surface for the clamping device and the supporting surface of the plate seat enclosing an angle, which exceeds the automatic interlocking and opens up to the back pressure supporting surface, wherein the cutting body is provided with a groove, which is engaged by a sliding pin, the diameter of which corresponds essentially to the width of the groove and which is disposed eccentrically and parallel to the axis of rotation of the bearing bolt, which is mounted rotatably in a bearing opening of the tool holder, passing through the supporting surface and/or the back pressure supporting surface, and which can be actuated from the outside.Type: GrantFiled: July 6, 2001Date of Patent: May 6, 2003Inventor: Hans-Peter Hollfelder
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Patent number: 4611516Abstract: Metal working cutting tool with a cutting insert which can be inserted in a recess of a tool shaft and fastened therein by means of a clamping jaw, whereby the cutting insert has the approximate shape of a prism with two diagonal opposite cutting edges and along one of the two lengthwise edges are adjacent cutting faces, which form an acute angle with the respective opposite principal cutting pressure and support surface, so that the angle opens towards the pressure-feed and support surface, whereby in the area of the joint lengthwise edge of the cutting face, there is incorporated in the cutting insert a continuous longitudinal groove of which one of the side walls serves as a support area for the relief-cut pressure-feed and support surface of the recess of the tool shaft, and whereas the respective other side wall forms the support surface for a recessed clamping jaw which is located in a diagonal groove of the tool shaft.Type: GrantFiled: November 23, 1984Date of Patent: September 16, 1986Assignee: Zinner GmbHInventors: Walter Hochmuth, Hans-Peter Hollfelder
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Patent number: 4074949Abstract: A cutting tool for metal cutting with a cutter having parallel base surfaces and grooves machined into the side surfaces, forming cutting edges, which can be inserted into the recesses of a tool holder. The cutting tool has a center bore for accommodating a clamping element and is made from a parallelepiped-shaped base body with rectangular and preferably square sides wherein the base edges of grooves successively run in the direction of a diagonal of the side surfaces of a parallelepiped similar to the parallelepiped-like base body inscribed so that the base surfaces of the cutter are rhombic.Type: GrantFiled: September 19, 1975Date of Patent: February 21, 1978Assignee: Robert Zapp, Werkzeug-und Maschinenfabrik GmbHInventors: Walter Hochmuth, Hans Peter Hollfelder
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Patent number: 3987524Abstract: A cutting tool includes a tool holder and a cutting bit secured to the tool holder by a clamping jaw. The tool holder has a recess defining a seating surface against which the clamping jaw bears to secure the cutting bit to the tool holder. The cutting bit has cutting means on both longitudinal end portions, and the position of the cutting tool on the tool holder may be changed so that either cutting means may be used. The recess in the cutting bit is constructed and arranged such that the cutting bit may be mounted in two different positions on the tool holder utilizing the same recess for accommodating the clamping jaw.Type: GrantFiled: March 1, 1976Date of Patent: October 26, 1976Assignee: Firma Robert Zapp, Werkzeug-und Maschinenfabrik GmbHInventors: Walter Hochmuth, Hans Peter Hollfelder