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| Number | Title | Issue Date |
| 7406853 | Rolling machine and method thereof In the transverse wedge rolling machine as claimed in the invention the drive motor is a permanent magnet motor, especially a torque motor. Furthermore the rotational speed of the rollers is controlled depending on their rotary position. ... | 08/05/2008 |
| 7353676 | Method and apparatus for precision rolling of rotationally symmetrical components An apparatus (1) and a method serve for precision rolling of a surface area (2) of a rotationally symmetrical component (3), especially a screw. The apparatus (1) includes at least two spaced apart rolling tools (4, 5), a measuring... | 04/08/2008 |
| 7267024 | Gear, and method and apparatus for manufacturing the same An idler gear having a part worked by cutting is formed such that a chamfer part is formed at least on a portion between a tooth shape and chamfers are formed on the tooth shape by a forging process on an outer peripheral surface and an end part thereof in an axial ... | 09/11/2007 |
| 7225656 | Process for forming a workpiece and rolling machine In the transverse wedge rolling machine as claimed in the invention the drive motor is a permanent magnet motor, especially a torque motor. Furthermore the rotational speed of the rollers is controlled depending on their rotary position. ... | 06/05/2007 |
| 7204121 | Method and apparatus for inserting blanks to be threaded in automatic rotary rolling machines A method for inserting blanks to be threaded in automatic rotary rolling machines, in which the step for inserting parts to be machined in the working position occurs at an adjustable, optimized rate, so that the portions of the outer surface of the roller tool affe... | 04/17/2007 |
| 7040131 | Cold forming tool, machine and method Cold forming tool including at least one penetration zone having teeth and a calibration zone having teeth. The teeth having a tooth height that increases substantially from the at least one penetration zone to the calibration zone. A distance between an outer surfa... | 05/09/2006 |
| 7032421 | Knurling tool A knurling tool is provided having a tool head which carries at least one knurling wheel and which is mounted adjustably on a shaft, wherein the tool head is mounted on the shaft linearly displaceably transversely with respect to the axis of the shaft, characterized... | 04/25/2006 |
| 7010952 | Device for holding at least one roller of a rolling machine A device for holding at least one roller of a rolling machine that can rotate about a rotational axis includes two holding arrangements that can be arranged on opposite faces of the roller viewed in the direction of the rotational axis. The device further includes a... | 03/14/2006 |
| 6993949 | Power or manually operated pipe grooving tool A pipe grooving tool is disclosed having a housing on which a back-up roller and a grooving roller are rotatably mounted. The grooving roller is pivotably movable toward the back-up roller and has a raised tool surface engageable with the outer surface of the pipe. ... | 02/07/2006 |
| 6988388 | Thread rolling attachment A thread rolling attachment (50) is adapted to be mounted on a machine tool and to be selectively moved in an axially direction relative to a workpiece (W) having a cylindrical surface upon which a thread is to be rolled. The improvement broadly includes a ce... | 01/24/2006 |
| 6941651 | Pulley and bearing assembly and a method and apparatus for inserting and fastening a bearing within a pulley A pulley and bearing assembly and a method of inserting and fastening a bearing within a pulley having an axially extending cylindrical hub portion with an axial bore forming an inner periphery of the pulley and a pair of opposite ends, an annular belt groove portio... | 09/13/2005 |
| 6935152 | Orbiting roller groover for pipe An apparatus and method for forming grooves in a pipe for receiving mechanical pipe clamps are disclosed. The apparatus includes a holding fixture for securing the pipe and a carriage rotatably mounted on the holding fixture. Two arms are pivotably mounted on the ca... | 08/30/2005 |
| 6915673 | Method of rolling worm gear and the worm gear A worm is formed by rolling to reduce the number of processing steps while ensuring the worm accuracy satisfactorily. A work material is positioned between a first rolling die (100) and a second rolling die (101) by rotation of the rolling dies and a s... | 07/12/2005 |
| 6912883 | Load measuring system for a thread rolling machine and operating method therefor A thread rolling machine forming a threaded member from a workpiece includes a die, a device for rotating the die, a device for generating a load applied to the die in a workpiece-feeding direction, a member that deforms under the applied load during a thread rollin... | 07/05/2005 |
| 6779270 | Full form roll finishing technique A full form net shape roll finished contacting machine element such as a gear or sprocket is produced from a near net shape workpiece of wrought or forged steel including teeth with an initial outer peripheral contoured surface, each having a tooth flank with a nomi... | 08/24/2004 |
| 6748779 | Tangential rolling attachment for a machine tool A tangential rolling attachment (20) for a machine tool, broadly includes a body (21); a pair of arms (22L, 22R) having their proximal marginal end portions (23L, 23R) pivotally mounted on the body and having distal marginal... | 06/15/2004 |
| 6729171 | Cold forming by rolling of parts made of press sintered material Method of cold forming a blank made of press sintered material which includes moving at least one tool towards the blank and subjecting the blank to rolling under a roughly constant load for a number of passes until the at least one tool reaches a chosen position. A... | 05/04/2004 |
| 6684674 | Tread rolling head An axial thread rolling head comprising a bearing unit including rolling dies supported via eccentric shafts, a shank which is axially movable with respect to the bearing unit and has a clutch portion which interacts with a claw clutch portion of a spring... | 02/03/2004 |
| 6598444 | Tangential rolling head A tangential rolling head with a basic body including means for loading it in a machine tool, two two-armed levers pivotally supported about a common axis of the basic body one lever arm of which is traversed by a formed-type roll and the other lever arm ... | 07/29/2003 |
| 6508095 | Thread-rolling end-working attachment An improved end-working attachment (30) for a screw machine or a rotary transfer machine is particularly suited for use in rolling threads on a workpiece. The attachment broadly comprises: a slide base (31) having an axis (y-y); at least two members (32, ... | 01/21/2003 |
| 6418767 | Round die type form rolling apparatus A round die type form rolling apparatus comprises: a pair of die moving blocks 15a, 15b rotatably supporting a pair of round dies 12a, 12b; four beam shafts 19 disposed around the rolling position of a work 33 being rolled by the round dies 12a, 12b and e... | 07/16/2002 |
| 6351886 | Method of manufacturing a speed gear Speed gear are manufactured by integrally molding, by either hot or warm forging, a speed gear section and a clutch spline section. Teeth of the speed gear in the speed gear section and an involute spline parallel to an axial line of the gear in the clutc... | 03/05/2002 |
| 6343497 | Method of manufacturing a speed gear and an apparatus for manufacturing a speed gear Speed gear are manufactured by integrally molding, by either hot or warm forging, a speed gear section and a clutch spline section. Teeth of the speed gear in the speed gear section and an involute spline parallel to an axial line of the gear in the clutc... | 02/05/2002 |
| 6244089 | Embossing device for embossing the edge of round blanks A device for embossing the edge of round blanks, in particular coins, has a forming wheel which is provided with roll-forming segments. The forming wheel has associated abutment elements which may likewise be mounted on forming wheels. A positioning devic... | 06/12/2001 |
| 6202461 | Tangential thread rolling head The attachment includes a generally U-shaped bracket having a pair of roll arms which are pivotally mounted intermediate their ends on the outer ends, respectively, the two arms of the U-shaped bracket. Each roll arm has a thread roll rotatably mounted on... | 03/20/2001 |
| 6026666 | Method for manufacturing internally geared parts A flow-turning process for manufacturing internally geared parts, including a press mandrel (10) comprising a mandrel (1) on which is fitted a forming tool (2) and one or more pressure rollers (3). A workpiece (4) is held between the forming tool (2) or p... | 02/22/2000 |
| 5992199 | Modular knurling tool A modular knurling tool is provided having a tool shank defining a first dove-tail connector and having at least one adjustment drive recess. Any selected one of a number of different knurling heads are adjustably connected to the tool shank by a second d... | 11/30/1999 |
| 5930896 | Apparatus and method for forming a gear A rolling process for producing a spur gear. The process comprises the following steps: (a) bringing gear teeth of a generally wheel-shaped toothed tool into press contact with a peripheral portion of a generally wheel-shaped gear material at which portio... | 08/03/1999 |
| 5918495 | Multistage gear-rolling apparatus A multistage gear-rolling apparatus of the present invention comprises a roller squeezing apparatus including a roughing roller die and a finishing roller die disposed coaxially and connected in series in an axial direction of said roughing roller die. Th... | 07/06/1999 |
| 5829292 | Rolling annular workpieces An annular workpiece 6 is rolled between two oppositely disposed forming rolls 2, 4, and two oppositely disposed growth rolls 22 and 24 acting at right angles to the line of action of the forming rolls. The forming rolls 2, 4, are brought together to roll... | 11/03/1998 |
| 5824168 | Process for gear-rolling a high accuracy gear According to the present invention, in a heating step, an outer circumferential portion of a workpiece having a disk shape is heated to high temperatures. In a hot rough-rolling step, the outer circumferential portion of the heated workpiece is formed by ... | 10/20/1998 |
| 5784912 | Tangential rolling head The invention relates to a tangential thread rolling head with two fork-shaped rolling head arms in which thread rollers are rotatably mounted by way of parallel axles. The thread rollers are in engagement with a pinion, sitting on the axles, of a gear co... | 07/28/1998 |
| 5528917 | Force controlled rolling of gears A gear rolling machine includes a pair of gear rolling dies for finish forming teeth on external gear blanks. A force sensor is mounted to the machine to monitor the amount of force applied to the gear blank by the rolling dies as one rolling die is infed... | 06/25/1996 |
| 5379620 | Apparatus and method for forming precision surfaces on shaft-like components An apparatus and method for forming precision surface shapes on shaft-like parts comprises a pair of substantially cylindrical and rotatable dies having forming surfaces located adjacent a shaft-like part therebetween. The shaft-like part is located in a ... | 01/10/1995 |
| 5339669 | Apparatus and process permitting the cold forming of grooves on the wall of a revolving part The apparatus and process according to the invention relate to the cold forming by rolling of revolving parts (7). The apparatus comprises two identical milling wheels (9A, 9B) arranged symmetrically with respect to the part (7) to be formed and performing the... | 08/23/1994 |
| 5301528 | Device for manufacturing toothed pulleys A device for non-cutting manufacturing of an annular part having external teeth includes a core tool that supports the blank from which the annular part is manufactured and is axially displaceable between two profiling rollers arranged diametrically oppos... | 04/12/1994 |
| 5230234 | Method of making roll-finished gears A method of preparing a gear blank for roll-finishing, essentially comprising the step of: while supporting a gear blank with pitch-line chucking, finish-sizing the central axial opening of the gear blank to a desired concentricity to promote accurate sub... | 07/27/1993 |
| 5167136 | Thread roll attachment Each of the two, pivotal, roll supporting arms of a thread rolling attachment has therethrough adjacent the end thereof remote from its pivotal axis a bore in which one end of a cylindrical pattern roll supporting shaft is adjustably secured. The axis of ... | 12/01/1992 |
| 5127246 | Method of and apparatus for strengthening gear tooth For strengthening teeth of a toothed wheel, the bottom lands of the toothed wheel are pushed by a stamping tool against a backup gear for thereby causing residual compressive stress at locations extending from the bottom lands to roots of the teeth. The s... | 07/07/1992 |
| 4829800 | Method and apparatus for cold sizing a round workpiece having multiple diameters An apparatus (12) for cold sizing a round workpiece (14) having round surfaces of cylindrical shapes that are coaxial about a central axis A of the workpiece and have different diameters. A support (54,55) rotatably mounts the workpiece (14) about its cen... | 05/16/1989 |
