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7866198 |
Method of producing a stepped shaft
A method for forming a stepped shaft includes: forming a billet of a predetermined mass; heating the billet; cross-wedge rolling the billet to form an intermediate workpiece having a first...
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7628049 |
Method and apparatus for manufacturing a battery terminal with undercut rings
A method and apparatus to cold form rings or a lead battery terminal with undercuts or overhangs to improve the sealing properties of the rings. The apparatus can be one of a segmented die device...
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7484394 |
Gear roll-forming apparatus
A gear roll-forming apparatus includes: a pinion die that is substantially the same in configuration and size as a bevel pinion; a pinion die holder for supporting the pinion die so as to allow...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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6711926 |
Method of manufacturing a hockey puck
A method of manufacturing a hockey puck for enhancing a hockey player's skills, strength and endurance. The method of manufacturing a hockey puck includes the steps of severing a disk member off a...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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)....
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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4811585 |
Device for forming asymmetrical articles by rolling
A pair of dies are provided of which die faces are formed with depressions sequentially brought into engagement with a particular portion of a workpiece as the workpiece rolls between the die...
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4779437 |
Grooving and stamping method and apparatus
The method and apparatus described herein produce a tubular shelf post having a plurality of spaced apart annular grooves along the length thereof and stamped indicia on the outside surface of the...
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4689980 |
Method for snap ring forming and grooving
A method for simultaneously forming splines and an annular groove in a metal piece having a central portion and ends on each side thereof, the method including the steps of forming a substantially...
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4669292 |
Underfloor wheel set barring machine for retreading of rim circumferences of railroad wheel sets
An underfloor wheel set barring machine for retreading of wheel rim circumferences of railroad wheel sets. Two driven pairs of friction rollers can be pressed against a wheel rim circumference with...
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4667498 |
Method and apparatus of making gelatine capsule forming pins having a rounded locking groove
A gelatine capsule includes a locking ridge having a smooth, rounded cross-section for improved locking characteristics with respect to the body portion of the capsule. The capsule cap is formed on...
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4644772 |
Snap ring forming and grooving
A machine (10) for forming grooves and splines in workpiece (32) including a mounting assembly (26,28,34,36) defining a support axis for rotatably supporting the workpiece (32) for rotary movement...
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4617816 |
Thread rolling attachment
An outboard thread rolling attachment for an automatic screw machine for rolling a pattern on a workpiece comprising: a roll arm yoke; a pair of roll arms supported by the yoke end diametrically...
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4583271 |
Method and apparatus for burnishing splines and gears using synchronously rotated gears
A burnishing machine and method employing a pair of oppositely disposed burnishing gears. The invention involves the use of two syncronously driven gears which operatively engage teeth on opposite...
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4545230 |
Rotary forming machine having tie bar connection
A rotary forming machine assembly including a lower base (12) and a pair of spindle housings (14) including front (16) and rear (18) walls. The housings (14) are movably mounted on the base (12)...
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4489581 |
Method of manufacturing articles by deformation of cylindrical blanks
Disclosed is a method of manufacturing articles by deformation of cylindrical blanks, comprising heating the blanks (1), their transverse wedge forming followed by deformation of the end crops (3)...
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4483055 |
Secondary working apparatus
A secondary working apparatus for secondarily machining a blank formed with internal serrations on a cylindrical plane, comprising a stationary housing structure, support means for supporting the...
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4426869 |
Radial infeed thread roll attachment
A radial infeed thread roll attachment comprising a pair of jaw elements each having a thread roll mounted at one end and a roller secured on the other end, a housing, pivotally mounting the jaw...
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4408473 |
Gear-roller
A gear rolling machine in which a work gear and a conjugate gear-like rolling die are rotated in tight mesh with relative radial pressure of metal deforming intensity applied between the rotating...
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RE31116 |
Rotary forming machine and tool
A rotary forming machine and a rotary tool utilized therewith for performing a forming operation on a workpiece. A work spindle rotatably mounts the workpiece about a first axis and a pair of tool...
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