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| Number | Title | Issue Date |
| 7341501 | Gear grinding machine, method for dressing threaded grinding wheel and method for grinding work A gear grinding machine, a method for dressing a threaded grinding wheel, and a method for grinding a work are disclosed. A dressing tool is rotated in a vertical plane, with its position being fixed. The position of a threaded grinding wheel is NC-controlled, where... | 03/11/2008 |
| 7169023 | Method and apparatus for manufacturing hourglass worm rolling die An apparatus manufactures a die for rolling an hourglass worm in improved processing accuracy. The apparatus includes a swing table swung, a movement table mounted on the swing table, and a workpiece shaft arranged on the movement table. The axis of a disk-shaped wo... | 01/30/2007 |
| 7153183 | Method and apparatus for lapping gears A method for lapping the gears of a gear set as well as a gear lapping system. The gear set generally includes a first gear in meshed engagement with a second gear, each of the first and second gears having a plurality of gear teeth each with drive and coast flank s... | 12/26/2006 |
| 7121930 | Process and dressing tool for the dressing of cylindrical grinding worms for the continuous generation grinding of gears A rotating dressing tool (2) coated with abrasive grains for profiling a multi-start grinding worm (4) for the continuous generation grinding of preferably small moduled gear teeth is provided with a stripping zone (6), a pre-profiling zone (... | 10/17/2006 |
| 7118459 | Dressing tool for profiling the tip area of a threaded grinding wheel A dressing tool for profiling the tip area of a threaded grinding wheel used for continuous generation grinding. Concave working faces (13) are arranged in a cylindrical surface of the dressing tool (7) and coated with an abrasive coating. The pitch (P... | 10/10/2006 |
| 7004826 | Device for smoothing gear wheels An apparatus for smoothing gear wheels has a single smoothing wheel and two further smoothing wheels opposite the single smoothing wheel. A clamping device for axially clamping the gearwheel to be smoothed can oscillate in a direction perpendicular to its rotation. ... | 02/28/2006 |
| 6979253 | Work drive for continuous generation gear grinding machine The gear train of a work drive system on a machine for the continuous grinding of gears, with which by means of non-integer transmission ratio between work spindle (3) and drive motor (4) as well as a high number of teeth on the cylindrical gear (6 | 12/27/2005 |
| 6942555 | Gear-shaping grindstone and method of fabricating the same A highly accurate, long-life grindstone for shaping a gear and a method of fabricating the grindstone, without depending on the accuracy of form of a base metal and without using a special grinding machine or a special lapping machine, are disclosed. A super-abrasiv... | 09/13/2005 |
| 6939214 | Honing wheel having internal gearing The cross-sectional profile of the outer peripheral surface of a honing wheel is within a spherical enveloping surface that is concentric with the honing wheel. Due to the cross-sectional profile of the outer peripheral surface of the honing wheel, tilting in the op... | 09/06/2005 |
| 6752691 | Device for smoothing gear wheels A device for smoothing gear wheels includes a loading station for supplying the gear wheels, a smoothing station for smoothing the flanks of the teeth, an inspection station for inspecting the degree of smoothing, and an unloading station for carrying away the proce... | 06/22/2004 |
| 6739943 | Machining the teeth of double sided face gears On account of the constructional form of the tool head (17) according to the invention, the opposite sides (18, 19) of a tool (13) attached to the tool spindle (14) of a numerically controlled continuously generating gear grinding or hobb... | 05/25/2004 |
| 6709318 | Dual-grinding method for bar blades and grinding disc for carrying out said method A grinding wheel and a method for grinding bar blade for the production of spiral gear teeth are described. For economical grinding of such bar blades the grinding wheel has a conical grinding surface (Pp) widening from a small diameter (d1) to a large diamet... | 03/23/2004 |
| 6663471 | Method of grinding half toroidal CVT disk A half toroidal CVT disk having an inner surface portion, an outer surface portion and a toroidal surface having a given machining allowance is centered with said inner surface portion worked prior to the heat treatment of said half toroidal CVT disk as t... | 12/16/2003 |
| 6575812 | Setting up process for a tool or workpiece on a gear making machine Determining of the starting and end positions of the machining programme of a gear making machine with respect to the axial position of the workpiece (11, 18) by means of a laser light line (14) projected at right angles to the workpiece axis, the positio... | 06/10/2003 |
| 6565418 | Method and machine for the machining of pre-machined toothed workpieces such as gears A grinding worm (4) on a grinding spindle is driven in a rotating manner. On a rotatable plate (7), two workpiece spindles (6a, b) are positioned at a distance from one another and driven in a rotating manner. The one workpiece (5) is ground with the grin... | 05/20/2003 |
| 6491568 | Profiling methods and apparatus for generation of modified grinding worms Method and an apparatus for the profiling of single-gear or multiple-gear grinding worms for grinding tooth profiles in accordance with the principle of continuous diagonal generating grinding. A grinding worm is divided into at least two axial zones wher... | 12/10/2002 |
| 6390894 | Face gear manufacturing method and apparatus A face gear manufacturing operation wherein a set of oversized teeth are formed on a face gear or tapered pinion gear by a gear cutting operation. The oversized teeth are of a predetermined profile. The gear bearing the oversize teeth is then subjected to... | 05/21/2002 |
| 6302764 | Process and device for dressing high-speed grinding worms In a first step, the grinding worm profile is dressed according to the requirements of the workpiece that is to be machined. In a second step, the thereby shaped grinding worm, which has been slightly deformed by the effects of the centrifugal force, is m... | 10/16/2001 |
| 6273801 | Composite honing ring The invention relates to a composite honing ring comprising a honing part and a carrier part, whereby both components are made of different materials and can contain plastic resins in particular. The invention is characterized in that the abrasive honing ... | 08/14/2001 |
| 6257963 | Grinding worm for the continuous generating grinding of gear wheels The grinding tool comprises a grinding worm flange (2) and a grinding worm (9) for the generative grinding of gears, the flange (2) being provided with location surfaces (5, 6) for the non-clearance fixture to a grinding spindle (1). The flange (2) has an... | 07/10/2001 |
| 6193591 | Loading system and collect assembly for grinding a workpiece An assembly for holding a cylindrical workpiece for grinding, including a support frame having at least one support arm extending to initially hold the workpiece and operable to disengage from the workpiece during grinding, a tailstock slidably mounted on... | 02/27/2001 |
| 6120355 | Method and apparatus for lapping gears A machine for lapping or testing gears comprising a single machine column having a first side oriented perpendicular to a second side with the first side having a first workpiece spindle rotatable about a first axis and the second spindle having a second ... | 09/19/2000 |
| 5967883 | Working apparatus provided with rotary table for mass-production of gears Coriolis motion gears can be produced in a mass-production manner and in low cost as follows: A ceiling surface of a body 8 is formed into a rotary table 9 and a drive shaft 11 is projected from a center of the rotary table. A slant portion 11a is formed ... | 10/19/1999 |
| 5957762 | Internally toothed tool for the precision machining of gear wheels A method for the precision machining of flanks of gear-wheel-shaped workpieces, in particular those with convex teeth, using an internally toothed tool with crossed axes, in which simultaneous relative movements take place not only in three mutually perpe... | 09/28/1999 |
| 5857894 | Grinding machine for the grinding of spur or helica gear--wheels In a stand (1), a work-piece spindle (2) is mounted for rotation around a vertical axis (C). On the stand (1), a slide (3) can be shifted horizontally and on the slide, a work-piece carrier (5) can be swivelled around a vertical axis (C1). On the carrier ... | 01/12/1999 |
| 5681207 | Method of working a helical gear by grinding In forming a helical gear by grinding with a grindstone, the modification accuracy of crowing etc. is improved in such a way that the inequality ଲ>γ c is established wherein ଲ is the helix angle of the helical gear to be ground and γ c is th... | 10/28/1997 |
| 5573449 | Threaded grinding wheel, method of dressing, and grinding a workpiece therewith A method of dressing a threaded grinding wheel comprising rotating the grinding wheel and dressing tool about their respective axes and bringing the tool into contact with a point on a flank of the grinding thread. The dressing tool is traversed along the... | 11/12/1996 |
| 5379554 | Grinding and finishing worm The invention relates to an apparatus of unitary construction to fine-finish gear teeth. The apparatus is a worm having first and second end portions and first and second outer surfaces. The first and second surfaces define a common tooth profile. The fir... | 01/10/1995 |
| 5325634 | Hourglass worm gear The improved hourglass worm gear which has been produced by grinding a blank for the worm gear by rotating a grinding wheel about a grinding wheel shaft A while turning the grinding wheel shaft A about a tool shaft A3 which extends in parallel with a whee... | 07/05/1994 |
| 5299390 | Method and apparatus for lapping a pair of gears A method of lapping teeth of a pair of gears by positively rotating one of the pair of gears at a predetermined constant speed, in mesh with the other gear in the presence of a lapping powder, while applying a braking torque to the other gear. The braking... | 04/05/1994 |
| 5136522 | Stock dividing method and apparatus for gear manufacturing machine Method and apparatus for stock dividing gear-shaped workpieces mounted on the work spindle of a gear-finishing tool. A work spindle encoder provides instantaneous angular position information when the surface of leading and trailing flanks of the workpiec... | 08/04/1992 |
| 5119594 | Grinding machine for continuous roll grinding of gears A grinding machine for continuous roll grinding of gears having a workpiece (6) clamped on a bench (1) and a grinding worm (8), the rotary drives of which are connected by a play-free mechanical hypoid transmission. The grinding worm (8) is continuously d... | 06/09/1992 |
| 5074080 | Tool for the precision working of tooth flanks of hardened gears A method for the precision working of the tooth flanks of particularly hardened gears (workpiece W) with a gearlike tool, the tooth flanks of which tool have an abrasive surface and which rotates in mesh with the workpiece (W). In order to avoid damage to... | 12/24/1991 |
| 5020279 | Machine tool for manufacture and dressing of tools and for finish-machining of gear wheels A machine tool for the manufacture and dressing of tools and for finish-mining of gear wheels comprising three spindles (4, 5, 15) installed in the heads (2, 3, 17) of their own and provided with drives (8, 11), two of said spindles (4, 5) being synchron... | 06/04/1991 |
| 4993194 | Grinding disks for profiling cylindrical worms A contouring tool for grinding cylindrical worm profiles includes two disks 46, 47 having hard grain coated surfaces 48, 49 for contouring the opposing flanks 3, 4 of the grinding worm 1. Hard grain coated parts 50, 52, which are provided for contouring t... | 02/19/1991 |
| 4961289 | Machine tool for fine machining the tooth flanks of pretoothed gearwheels A tool for fine machining the tooth flanks of pretoothed gearwheels is described. The flanks of the gearwheel are subjected to a worm-shaped tool by the hobbing method. The tool is made of an elastic synthetic material with embedded granular grinding mate... | 10/09/1990 |
| 4949456 | Method of making ring gear and ring gear therefrom An improved method is provided for finish machining forged and/or rough-cut teeth (8) of a ring gear (40) by which a rotary tool such as a rotary carbide milling tool (24) is rotated about a rotational axis "r" that projectionally intersects a bottom surf... | 08/21/1990 |
| 4920703 | Method and apparatus for finishing a tooth surface of a gear A workpiece and master gears are engaged each other and at least one of the workpiece and master gears is relatively rocked in a manner such that the relative rock movement of the master gear does not interfere substantially beyond an involute line of the... | 05/01/1990 |
| 4910922 | Method of grinding the teeth of bevel gears having longitudinally curved teeth The apparatus for grinding rough-cut longitudinally curved gear teeth of a helical bevel gear, comprises two spindles for respectively mounting a tool and a workpiece, and structure for translatably and adjustably arranging at least one spindle of these t... | 03/27/1990 |
| 4848040 | Apparatus for grinding shaving cutter teeth, and method of same A tooth grinding apparatus uses a cutter grinder to regrind the tooth surfaces of a shaving cutter adapted to cut gear workpieces, the regrinding being performed whenever the tooth surfaces of the shaving cutter become worn. A plurality of tooth grinding ... | 07/18/1989 |
