Patents Assigned to WF-Maschinenbau und Blechformtechnik GmbH & Co. KG
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Publication number: 20160089708Abstract: A method for producing rotationally symmetric structural components of metal, in particular steel, is provided. A blank is arranged in a torsion-proof manner on a first receptacle, the receptacle is rotated about a rotation axis so that the blank is caused to rotate about this rotation axis, at least one linear shaping element with a contour having at least partially an unrolled external contour of the rotationally symmetric structural component or a preform of the structural component is moved tangentially to the surface of the synchronously rotating blank, and the linear shaping element is at the same time pressed against the blank so that during the tangential movement the contour of the linear shaping element is formed at least partially into the blank. A kingpin or link pin of a connection link with a connection shaft and a link outer part is produced.Type: ApplicationFiled: December 9, 2015Publication date: March 31, 2016Applicants: ThyssenKrupp Steel Europe AG, WF Maschinenbau und Blechformtechnik GmbH & Co. KGInventors: Michael Gövert, Christian Malkemper, Susanne Brinkkötter
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Patent number: 7797976Abstract: A method of forming a flange on a circular metal blank (1) has the following steps: By means of at least one pressure roller (3), a hub-type and/or conical structure is formed on the circular metal blank, and from the conical structure (4), a flange (7) is formed on the circular metal blank (1) by means of a subsequent treatment.Type: GrantFiled: November 15, 2004Date of Patent: September 21, 2010Assignee: WF-Maschinenbau und Blechformtechnik GmbH & Co. KGInventor: Udo Friese
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Patent number: 7774938Abstract: Thus, the present disclosure includes a method of producing a weight-optimized pneumatic tire rim having rotationally-symmetrically partially different wall thickness. The steps include: providing a tube section having a first wall thickness and two end sides; leveling the first wall thickness starting from the two end sides over a defined rotationally-symmetrical area thereby forming two flanks by precontouring, each of the flanks having a second wall thickness, and pushing tolerance-caused excess material of the flanks into a well base zone between the two flanks; and contouring the flanks by pressure rolling while drawing each of the flanks toward an end area of each of the flanks and reducing the thickness of each of the flanks partially differently to predetermined measurements. The present disclosure also includes a device to implement the method.Type: GrantFiled: September 6, 2003Date of Patent: August 17, 2010Assignee: WF-Maschinenbau und Blechformtechnik GmbH & Co. KGInventor: Udo Friese
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Patent number: 7124610Abstract: The invention relates to a method for producing a torsional vibration damper housing, especially the housing for a viscosity torsional vibration damper, whereby the damper housing is manufactured from an existing plate circular blank and the shaping of the damper housing occurs in an impact extrusion machine during a non-cutting impact extrusion shaping method. In successive impact extrusion shaping steps, all parts of the damper housing protruding from the plane of the plate circular blank, which forms the housing rear wall, are impact extruded while reducing the wall thickness of said parts to form a one-piece damper housing. Said damper housing is structured such that the area of the fastening flange has the largest thickness.Type: GrantFiled: December 20, 2002Date of Patent: October 24, 2006Assignees: Hasse & Wrede GmbH, WF Maschinenbau- und Blechformtechnik GmbH & Co. KGInventors: Rolf Pape, Klaus Peter Seidel
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Patent number: 6868606Abstract: In a method of making a rotation-symmetrical gear member, an outer edge of a circular blank is shaped to form a concentric thickened area which extends in axial direction to thereby realize a ring structure. A remaining area of the circular blank is then shaped into a cap-like structure through application of compressive forces by means of a pressure roller such that the ring structure adjoins a sidewall of the cap structure and projects outwardly in radial direction. The ring is then formed with outer teeth in opposition to the sidewall.Type: GrantFiled: November 14, 2002Date of Patent: March 22, 2005Assignee: WF-Maschinenbau und Blechformtechnik GmbH & Co. KGInventor: Udo Friese
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Patent number: 6688149Abstract: A method for the non-cutting production of a hub with a stepped hole, the method steps comprising: providing a metal round blank having a throughhole; providing a patch block in the throughhole and having a portion of the patch block spaced at a distance from the metal round blank so as to create a stepped area displaced from a plane of the top surface of the metal round blank; and, cold-forming the hub by use of at least one pressure roller with the at least one pressure roller fed radially towards the throughhole, wherein material from the metal round blank flows into the stepped area between the metal round blank and a portion of the patch block, thereby forming a stepped hole comprising a material web at an inner circumference of the hub. A hub with a stepped hole, produced from a metal round blank by a compression method.Type: GrantFiled: August 13, 2002Date of Patent: February 10, 2004Assignee: WF-Maschinenbau und Blechformtechnik GmbH & Co. KGInventor: Udo Friese
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Publication number: 20030093901Abstract: In a method of making a rotation-symmetrical gear member, an outer edge of a circular blank is shaped to form a concentric thickened area which extends in axial direction to thereby realize a ring structure. A remaining area of the circular blank is then shaped into a cap-like structure through application of compressive forces by means of a pressure roller such that the ring structure adjoins a sidewall of the cap structure and projects outwardly in radial direction. The ring is then formed with outer teeth in opposition to the sidewall.Type: ApplicationFiled: November 14, 2002Publication date: May 22, 2003Applicant: WF-Maschinenbau und Blechformtechnik GmbH & Co. KGInventor: Udo Friese
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Patent number: 5619879Abstract: This invention concerns a method and device for the non-cutting production of a hub (27) for a transmission component. A sheet blank (21) which is carried by a tool (3) on a main spindle (4) and rotated relative to one or more presser rollers (9, 10) is formed to produce a cylindrical prominence (7), projecting from the sheet by pressing it with a presser roller round a pin (5) mounted on the tool or a mobile stop (8) and passing through said sheet.Type: GrantFiled: December 28, 1995Date of Patent: April 15, 1997Assignee: WF-Maschinenbau und Blechformtechnik GmbH & Co. KGInventor: Udo Friese