| Patents for B23F 21 - Tools specially adapted for use in machines for manufacturing gear teeth (1,733) |
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| 08/09/2001 | US20010012755 Fine-machining tool for machining gear workpieces |
| 07/26/2001 | WO1998045077A3 Device for manufacturing parts with an outer profile |
| 07/10/2001 | US6257963 Grinding worm for the continuous generating grinding of gear wheels |
| 07/04/2001 | EP1112798A2 Precision machining tool for finishing gear shaped workpieces |
| 06/14/2001 | WO2001041960A2 Cutting profile tool for the production of spiral and hypoid bevel gears |
| 06/13/2001 | EP1106291A2 Hob for making external gears |
| 06/13/2001 | EP1106290A2 Method and divice for creating undercuts on thoothflanks of internally or externally geared gear blanks |
| 06/07/2001 | WO2001039916A1 Method for grinding straight toothed conical gear wheels |
| 06/07/2001 | DE19958675A1 Profilwerkzeug Profile Tools |
| 06/07/2001 | DE19957983A1 Werkzeug zur Herstellung der Aussenverzahnung von Zahnrädern Tool for producing the outer teeth of gears |
| 05/09/2001 | EP1097018A2 Method and device for creating undercuts on tooth flanks of internally or externally geared gear blanks |
| 04/24/2001 | US6220797 Surface treated steel cutting tool |
| 04/17/2001 | US6217409 Threaded grinding wheel and method of dressing |
| 04/04/2001 | CN1290201A Cutting tool for producing toothed articles |
| 03/08/2001 | WO2000066310A3 Method for producing a cutting tool for face hobbing gears |
| 02/20/2001 | US6190241 Method and an internally toothed tool for the precision machining of gear-wheels, and a method and dressing wheel for dressing the tool |
| 02/14/2001 | EP1075890A1 Device for manufacturing parts with an outer profile |
| 02/07/2001 | CN1282642A Gear-rack with only rolling contact and its cutting tool |
| 01/31/2001 | EP1071533A1 Cutting tool for producing toothed articles |
| 01/18/2001 | DE19932853A1 Cross-toothed rotary miller for milling external teeth has teeth of rotary miller provided one after another along each cutting groove as well as on periphery along screw line |
| 01/18/2001 | DE10027526A1 Workpiece milling method using milling tool by cyclically withdrawing tool from surface of workpiece |
| 01/17/2001 | CN1060706C Method for generating tooth surfaces of globoid worm wheel |
| 01/10/2001 | EP1066908A2 Device for manufacturing parts with an outer profile |
| 01/09/2001 | CA2207064C Front-loading rotary ring cutter |
| 01/03/2001 | EP1064116A1 Threaded grinding wheel and method of dressing |
| 12/06/2000 | CN1275458A Precision broaching method and cutter for spiral cylindrical gear |
| 11/09/2000 | WO2000066310A2 Method for producing a cutting tool for face hobbing gears |
| 11/09/2000 | CA2370833A1 Cutting tool for gears by face hobbing |
| 09/27/2000 | CN1268080A Cutting edge rounding method and apparatus |
| 09/19/2000 | US6120217 Cutting tool for producing toothed articles |
| 09/12/2000 | US6116828 Coating with layer containing titanium, aluminum, nitrogen and carbon |
| 08/30/2000 | EP1030757A1 Composite honing ring |
| 08/10/2000 | DE19905136A1 Correction process for grinding screw, with servo motor serving as second motor and angle of correcting grindstone measured by second angle setter |
| 07/12/2000 | EP1018387A1 Gear shaping method and device and spiral bevel gear cutter |
| 05/30/2000 | CA2188980C Internal broach for the internal broaching of profiles |
| 05/23/2000 | US6065910 Gear shaper cutting method and apparatus |
| 05/10/2000 | EP0998372A1 Cutting edge rounding method and apparatus |
| 05/04/2000 | DE19910231C1 Thin metal shim for reducing accumulation of swarf on gear cutting head used when cutting spiral bevel gears |
| 04/25/2000 | CA2066595C Hob for generating face gears |
| 04/20/2000 | WO2000005023A3 Method and device for creating undercuts on tooth flanks of internally or externally geared gear blanks |
| 03/22/2000 | EP0665077B1 Gear finishing apparatus |
| 03/16/2000 | DE19927478A1 Surface hardened steel cutting tool, which may have a large range of cutting applications |
| 02/03/2000 | WO2000005023A2 Method and device for creating undercuts on tooth flanks of internally or externally geared gear blanks |
| 02/03/2000 | DE19834112A1 Milling cutter with replacement lugs fitted into transverse grooves in basic body with peripheral slits has cutter teeth, clamping cones, and grinding wheel |
| 01/27/2000 | DE19933137A1 Machining undercuts into flanks of teeth on internally or externally toothed work wheels, using cutting edges on teeth in toothed work wheel |
| 01/26/2000 | EP0973626A1 Device for manufacturing parts with an outer profile |
| 01/11/2000 | US6012972 Method for flexible profiling of grinding worms |
| 12/21/1999 | US6004078 Cutting tool for toothed articles |
| 11/24/1999 | CN1046648C Universal cutting blade blank and cutting blade formed therefrom |
| 11/17/1999 | EP0956182A1 Honing tool for machining workpieces by cutting |
| 10/07/1999 | WO1999050016A1 Gear shaping method and device and spiral bevel gear cutter |
| 09/28/1999 | US5957762 Internally toothed tool for the precision machining of gear wheels |
| 09/23/1999 | WO1999047300A1 Threaded grinding wheel and method of dressing |
| 08/31/1999 | US5944587 To reduce deterioration |
| 08/26/1999 | DE19829880A1 CNC machine for grinding and sharpening the tooth flanks of a spiral bevel gear |
| 08/19/1999 | WO1999041035A1 Cutting tool for producing toothed articles |
| 08/19/1999 | CA2320312A1 Cutting tool for producing toothed articles |
| 08/10/1999 | US5934841 Round bar cutting tool and cutting tool head for same |
| 07/27/1999 | CA2156404C Method of sharpening profile-sharpened cutting blades |
| 07/14/1999 | EP0796163B1 Method for manufacturing a hob cutter for machining face gears |
| 05/26/1999 | EP0917502A1 Honing or precision tool |
| 05/20/1999 | WO1999024203A1 Composite honing ring |
| 05/12/1999 | CN1216490A Cutting tool for toothed articles |
| 05/06/1999 | EP0912285A2 Cutting tool for toothed articles |
| 04/06/1999 | US5890950 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 |
| 04/06/1999 | US5890846 Cutting tool for toothed articles |
| 03/11/1999 | WO1999011415A1 Assembled hob cutter |
| 03/11/1999 | WO1999011414A1 Changeable cutting plate |
| 02/11/1999 | WO1999006180A1 Cutting edge rounding method and apparatus |
| 02/11/1999 | CA2298528A1 Cutting edge rounding method |
| 02/02/1999 | US5865569 Internal broach for the internal broaching of profiles |
| 01/13/1999 | EP0890406A2 Gear shaper cutting method and apparatus |
| 12/17/1998 | WO1998056530A1 Honing or precision tool |
| 12/17/1998 | DE19724527A1 Hon- oder Feinwerkzeug Honing or fine tool |
| 12/08/1998 | US5845533 Gear transmission of a cylindrical pinion with a face gear, face gear used in said transmission and method and tool for making the face gear |
| 10/15/1998 | WO1998045077A2 Device for manufacturing parts with an outer profile |
| 10/14/1998 | EP0870565A2 Gear cutting method, apparatus and coated hob |
| 09/09/1998 | CN2290438Y Mechanical clamping hob with changeable its blade teeth and extension regrinding |
| 08/26/1998 | CN2288807Y Plane secondary enveloping ring surface worm gear worm-gear hob |
| 08/06/1998 | WO1998033624A1 Honing tool for machining workpieces by cutting |
| 08/06/1998 | DE19703261A1 Honschleifwerkzeug zur spanabhebenden Bearbeitung von Werkstücken The honing tool for machining workpieces |
| 07/15/1998 | EP0690761B1 Universal cutting blade blank and cutting blade formed therefrom |
| 07/15/1998 | CN1187403A Round bar blade and cutter head provided especially for same |
| 07/08/1998 | EP0787055B1 Gear transmission of a cylindrical pinion with a face gear, face gear used in said gear transmission, and method and tool for making the face gear |
| 04/14/1998 | US5738569 Threaded grinding wheel, and method of dressing |
| 04/07/1998 | CA2158046C Universal cutting blade blank and cutting blade formed therefrom |
| 03/18/1998 | CN1037754C Gear fine hobbing cutter |
| 02/24/1998 | US5720585 Method of forming grooves with cutting edges in the sides of the teeth of a shaving cutter |
| 02/24/1998 | US5720584 Tool for producing a crown wheel which can mesh with a pinion with oblique teeth, and method of producing such a crown wheel |
| 02/17/1998 | US5718544 Method for producing a two-part member having rack teeth |
| 02/05/1998 | WO1997039851A3 Cutting tool for toothed articles |
| 01/27/1998 | US5711642 Front-loading rotary ring cutter |
| 01/14/1998 | CN1170376A Front-loading rotary ring cutter |
| 01/02/1998 | DE19624842A1 Method for profiling single or multi=thread polishing screw |
| 12/29/1997 | EP0813927A2 Round bar blade and cutter head provided especially for the same |
| 12/20/1997 | CA2208169A1 Round bar blade and cutter head |
| 10/30/1997 | WO1997039851A2 Cutting tool for toothed articles |
| 10/22/1997 | EP0699114B1 Tool for producing a crown wheel which can mesh with a pinion with oblique teeth, and method of producing such a crown wheel |
| 10/08/1997 | EP0799106A2 Front-loading rotary ring cutter |
| 10/08/1997 | CN1161262A Hobs for mfg. gear teeth with coarse processing or fine processing of integral arbor assembly type |