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| Number | Title | Issue Date |
| 7426777 | Method of producing member having face-geared surface A method of producing a member with a face-geared surface. An example of the method includes an initial process preparing a work piece and a hob, and a geared surface forming process forming a geared surface on a part of the area. In addition, at least one of the ho... | 09/23/2008 |
| 7294046 | Method for dressing a grinding worm A method for dressing an essentially cylindrical grinding worm on a machine suitable for continuous generation grinding in the diagonal method. The dressing tool is an essentially cylindrical gear wheel, having an abrasive coating on the surface that effects the dre... | 11/13/2007 |
| 7198543 | Gear grinding machine A gear grinding machine comprises: a moving mechanism rotatably mounted with a threaded grinding wheel, and arranged to move the threaded grinding wheel along directions of X, Z, and Y, and to turn the threaded grinding wheel in a Y-Z plane; an NC device for control... | 04/03/2007 |
| 7179025 | Machine and method with 7 axes for CNC-controlled machining, particularly generating cutting or grinding; of spiral bevel gears On a CNC machine for machining spiral bevel gears the axis (T) of a tool spindle forms a fixed, non-adjustable tilt angle (κ) against an orientation axis (O) for all bevel gears to be machined. The tool spindle is adapted to be continuously swiveled about the orien... | 02/20/2007 |
| 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 |
| 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 |
| 6805620 | Grindstone having resinoid abrasive structure including abrasive agglomerates each provided by vitrified abrasive structure A resinoid grindstone including a main body having an abrasive structure in which abrasive agglomerates are held together by a resin bond. Each of the abrasive agglomerates includes abrasive grains which are held together by an inorganic bond. The resin bond include... | 10/19/2004 |
| 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 |
| 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 |
| 6450740 | Mechanical gear hob with stock divide by differential gear box A mechanical gear hob is equipped with an automatic stock divide device that enables the hob to cut or re-cut gear parts that already have teeth in them by automatically synchronizing the gear teeth to the hob cutter. The hob is equipped with a hob shift ... | 09/17/2002 |
| 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 |
| 6390893 | Method of machining gears A method of machining at least one tooth flank of a gear with a finishing tool. The method comprises rotating the finishing tool, such as a grinding tool, and bringing the tool and the tooth flank into contact. Relative movement between the tool and the g... | 05/21/2002 |
| 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 |
| 5890950 | Method for shaving or shave grinding cylindrical gear wheels, especially flank-line modified gear wheels, and for profiling the tools required for shave grinding cylindrical gear wheels A method for shaving and shave grinding tooth flanks of cylindrical workpiece gear wheels, especially, flank-line modified gear wheels, and for profiling tools needed for shave-grinding cylindrical workpiece gear wheels. During the machining of gear wheel... | 04/06/1999 |
| 5885038 | Machine for finishing the tooth flanks of gear-shaped workpieces with an internal gear tool Machine comprising a main frame (1), machine bed (2), headstock (3) and tailstock (4) with means (17, 18) for mounting of the work for rotation about a work axis (C2), the means being disposed on the machine bed, with the headstock being movable in a dire... | 03/23/1999 |
| 5624301 | Method and mechanism for the grinding of groove-shaped external profiles on work pieces The invention covers a method and a mechanism for the simultaneous machining of profile sections of one and the same work piece by two grinding wheels. Acc. to the method first the finish-grinding positions of the two grinding wheels (4.1 and 4.2) are cal... | 04/29/1997 |
| 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 |
| 5539172 | Apparatus and method for machining a gear shape An apparatus and a method for machining a gear shape whereby when a gear is machined with a form tool, sludge is easily excluded and an accurate gear shape is provided. A method for machining an accurate gear shape whereby with a workpiece chucked, postpr... | 07/23/1996 |
| 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 |
| 4991353 | Grinding machine for grinding pregeared bevel gears A machine for grinding pregeared bevel gears in which the grinding of both flanks of the tooth gap is performed in a single setting and by a single tool in a hobbing process. The grinding machine is provided with a truing device rigidly connected to a sta... | 02/12/1991 |
| 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 |
| 4955163 | Method for production of involute gear tooth flanks A method is disclosed in which only one working point or machining point on a machining tool, which in general can comprise a grinding wheel or disc, is in machining contact with a workpiece such as a gear blank during a machining operation. The position ... | 09/11/1990 |
| 4811528 | Method for production of envolute gear tooth flanks A method and apparatus are disclosed in which only one working point or machining point on a machining tool, which machining contact with a workpiece such as a gear blank during a machining operation. The position of this single working or machining point... | 03/14/1989 |
| 4755950 | Stock divider including a computer controlled gear locator A grinder for form grinding gear teeth in which a work gear is positioned rotationally by a computer controlled drive. A sensitive probe in known angular relation to a grinding wheel about the axis of the gear is positioned at random in any tooth space, a... | 07/05/1988 |
| 4744179 | Process for controlling tool infeed at machining start of a gear cutting machine A process for controlling the tool infeed prior to machining a semi-machined gear comprises aligning the tool with the gear and feeding the tool radially inwardly in rapid traverse without making contact with the gear. The continuous rotating tool is then... | 05/17/1988 |
| 4697387 | Device for grinding tooth profiles of a rotating toothed workpiece Two simultaneously driven worm shaped globoidal tools of identical shape are radially adjustable towards the workpiece having tooth profiles. Their tooth thicknesses are smaller than the tooth gap widths of the finished tooth gaps on the workpiece. The wo... | 10/06/1987 |
| 4650378 | Method for machining a gear by means of a rotating gear-type tool Gear teeth of the gear being worked are machined by rotating the gear with a gear-type machining tool moved radially into tangential contact with the gear being worked. The relative of rotation rates of the gear and the tool are determined by the number o... | 03/17/1987 |
| 4649671 | Method for the precision working of the flanks of gears with a gear-shaped tool coated with hard-material granules and a method for dressing such a tool A method for the manufacture or machining of the tooth system of straight or helically toothed, externally or internally toothed, nonhardened or hardened workpiece with a toothed tool, the tooth flanks of which are coated with a cubic boron nitride (CBN).... | 03/17/1987 |
| 4638599 | Gear grinding machine for radial or helical spur gears The invention relates to a gear grinding machine for straight toothed or oblique toothed spur gears, in which a main slide (2) reciprocable on the machine column and an auxiliary slide (7) reciprocable on the main slide are provided for producing the rock... | 01/27/1987 |
| 4631870 | CNC grinding machine A CNC grinding machine includes a base having a first plane surface which can be defined by two axes perpendicular with each other, a work station driven by a first servomechanism to be capable of moving on the first plane surface and rotating about a thi... | 12/30/1986 |
| 4631869 | Automatic workpiece engaging apparatus in grinding machines An apparatus for automatically causing a workpiece to engage a rotary tool. A pulse signal generated by rotating a reference workpiece is stored, and then a pulse signal generated by rotating a mounted workpiece is counted. The counted pulse signal and th... | 12/30/1986 |
| 4617761 | Helical gear grinding machine A machine for automatically grinding a helical gear. The machine comprises a first rotational drive source for rotating a grinding wheel, a second rotational drive source for rotating a helical gear in mesh with the grinding wheel, a third rotational driv... | 10/21/1986 |
| 4602458 | Apparatus for the manufacture or working of gears Apparatus for the manufacture or working of straight or helically toothed, externally or internally toothed gears comprising a hyperboloidally or globoidally or similarly formed toothed tool, which has an abrasive or similar surface and which grips the wo... | 07/29/1986 |
| 4589230 | Grinding machine A grinding machine including a grinding wheel spindle motor for rotating a grinding wheel, a workpiece spindle motor for rotating a workpiece such as a gear to be ground in mesh with the grinding wheel, and a traverse motor for moving a table supporting t... | 05/20/1986 |
| 4587766 | Synchronous operation control apparatus in grinding machines A synchronous operation control apparatus for rotating a grinding wheel and a gear to be ground thereby in synchronism to grind teeth of the gear to a nicety. A pulse generator is connected to a rotational drive source for rotating the grinding wheel, and... | 05/13/1986 |
