| Patents for B23F 21 - Tools specially adapted for use in machines for manufacturing gear teeth (1,733) |
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| 09/15/1994 | DE4403236A1 Grinding worm for the generation grinding of cylindrical spur gears |
| 09/01/1994 | WO1994019151A1 Method of sharpening profile-sharpened cutting blades |
| 09/01/1994 | WO1994019135A1 Grinding and finishing worm |
| 08/24/1994 | CN2175053Y Cutting tool for machining rubbing wheels of lighters |
| 08/23/1994 | CA2027207C Gear type tool |
| 08/18/1994 | WO1994017945A1 Tool for manufacturing crown wheels |
| 08/16/1994 | US5338134 Gear finishing hob |
| 08/03/1994 | EP0608479A2 Method and device for making gear teeth |
| 07/20/1994 | EP0606324A1 Honing machine |
| 06/09/1994 | DE4340608A1 Cutter blade for producing teeth on spiral bevel and hypoid gears - has cutting edge with smaller axial generating angle than that of profile edge which cuts profile while tooth is being cut |
| 05/17/1994 | US5312210 Apparatus for machining teeth |
| 05/11/1994 | WO1994009937A1 Rotary ring cutter having coolant distribution and discharge means |
| 05/04/1994 | CN2163708Y Combined external toothing cylindrical gear broach |
| 04/26/1994 | US5305558 Method of sharpening profile-sharpened cutting blades |
| 04/05/1994 | US5299892 Boronnitride coated microcutting device |
| 03/30/1994 | CN1084440A Processing method of point-contact enveloping ring surface worm wheel pair |
| 03/17/1994 | WO1994005454A1 Gear cutting tool |
| 03/08/1994 | US5292212 Apparatus for positioning a gear blank |
| 03/01/1994 | US5290135 Rotary ring cutter having coolant distribution and discharge means |
| 03/01/1994 | US5289982 Disk reclaimer for use with cohesive bulk materials |
| 02/22/1994 | US5288179 Hob for generating face gears |
| 02/03/1994 | DE4303897C1 Gear teeth flank machining system - has each cutting tool movable in tool holder in transverse direction and bearing at rear against cam with profile matching that of finished flank |
| 02/02/1994 | EP0581125A1 Form grinding tool for machining of gears |
| 02/02/1994 | EP0580801A1 Method of cutting hour glass screws |
| 02/02/1994 | EP0580597A1 Rotary ring cutter. |
| 02/01/1994 | US5282702 Wafer broaching tool |
| 01/13/1994 | DE4221427A1 Accurate cutting or shaping of internal or external evolute gear teeth - involves tool shaped as globoidal worm gear for plastic deformation by rolling, grinding or cutting |
| 01/12/1994 | CN1080578A Gear fine hobbing cutter |
| 01/11/1994 | CA1325887C Grinding tool |
| 01/05/1994 | DE4214268C1 High torsion coupling between shaft and hub - has toothed profiles with grooved gear teeth for plastic deformation after heat shrink fit |
| 12/22/1993 | EP0494221B1 Hob for generating face gears |
| 12/08/1993 | CN2148626Y Cutter adapted for processing worm tooth face |
| 12/02/1993 | DE4315752A1 Tooth profile machining for sprockets of roller chains - uses cylindrical tools for machining teeth of sprocket rotatable about its rotary axis |
| 10/27/1993 | EP0566637A1 Method for crown gear grinding by generation. |
| 10/27/1993 | CN1022549C Tooth shape regrinding method of gear shaving cutter blade |
| 10/26/1993 | US5255475 Tool for grinding the teeth of bevel gears having longitudinally curved teeth |
| 10/14/1993 | WO1993019881A1 Method and device for grinding grooved external surfaces of a workpiece |
| 09/30/1993 | DE4210710A1 Verfahren und Einrichtung zum Schleifen rillenförmiger Außenprofile eines Werkstückes Method and apparatus for grinding groove-shaped outer profile of a workpiece |
| 09/16/1993 | DE4207510A1 Tool for grinding tooth profile of hardened internal gear - has form of convex globoid worm with CBN abrasive surface that is dressed using diamond coated dressing tool |
| 09/15/1993 | EP0559798A1 Tool for producing crown wheels, and method for producing such a tool. |
| 08/03/1993 | US5232316 Hob construction |
| 07/21/1993 | CN2138537Y Gear cutter for round arc inner gear |
| 07/14/1993 | EP0550877A1 Method for generating undercuts in straight internal or external toothings of toothed workpieces |
| 04/27/1993 | US5205679 Rotary tool for generating bevel gears |
| 04/27/1993 | US5205678 Gear cutting tool |
| 04/15/1993 | WO1993006962A1 Honing machine |
| 04/08/1993 | DE4133105A1 Hon-maschine Hon-machine |
| 04/07/1993 | CN2129194Y Sprocked gear hob of variable-pitch chain |
| 04/01/1993 | DE4132487A1 Fly cutter type spline milling machine - has cutter slightly skew to cutter rotational axis to produce virtual clearance between cutter and flanks of slot |
| 03/10/1993 | EP0530528A1 Grinding tool |
| 03/06/1993 | CA2077568A1 Grinding tool |
| 02/18/1993 | WO1993003297A1 Shaft with shaped endless screw and milling cutter for producing the endless screw |
| 02/17/1993 | CN1068985A Processing method for gear ratio rack |
| 02/11/1993 | DE4126934A1 Fly-cutter-type spline-generating milling machine - has cutters around periphery of magazine disk which can be indexed to bring new cutter into working position |
| 02/11/1993 | DE4126026A1 Welle mit angeformter schnecke und fraeser zur herstellung der schnecke Shaft with molded screw and Mills for manufacturing a snail |
| 12/30/1992 | EP0520122A1 Pot-broach vertical broaching machine |
| 12/23/1992 | EP0519267A1 Bore nitride coated micro-milling tool |
| 11/04/1992 | EP0511225A1 Gear-shaped tool and method of generating gears |
| 10/29/1992 | WO1992018278A1 Method of cutting hour glass screws |
| 10/27/1992 | US5158400 Rotary disc cutter and method of making same |
| 10/12/1992 | WO1992018281A1 Rotary ring cutter |
| 10/11/1992 | WO1992018280A1 Rotary disc cutter and method of making same |
| 10/08/1992 | DE4110662A1 Clamping mechanism for exchangeable cutting tips in milling heads - has elastically deformable clamping piece which holds exchangeable tips in cutter body |
| 10/01/1992 | WO1992016329A1 Shaper cutter with disposable spring type insert |
| 09/23/1992 | CN1018341B Circular arc gear hob |
| 08/25/1992 | US5140781 Gear finishing process |
| 08/05/1992 | EP0497309A1 Rotary tool for generating bevel gears |
| 07/23/1992 | WO1992011967A1 Method for crown gear grinding by generation |
| 07/14/1992 | US5129190 Machining and apparatus |
| 07/14/1992 | US5129185 Method for the precision working of the tooth flanks of particularly hardened gears |
| 07/01/1992 | EP0202242B1 Gear cutter assembly |
| 06/23/1992 | US5123786 Milling cutters |
| 06/17/1992 | DE4122459C1 Straight tooth bevel gear cutting machine - has rotary tool with bell-shaped body with inwards pointing blades at edge region |
| 05/30/1992 | WO1992009395A1 Tool for producing crown wheels, and method for producing such a tool |
| 05/30/1992 | CA2096024A1 Tool for producing crown wheels, and method for producing such a tool |
| 05/20/1992 | EP0357772B1 Hob cutter for cutting involute gear |
| 05/06/1992 | EP0483561A1 Machining method and apparatus |
| 04/21/1992 | US5105697 Multiple stage shaving die |
| 04/08/1992 | EP0478705A1 Broaching machine |
| 03/24/1992 | US5098231 Shaper cutter with disposable spring type insert |
| 03/10/1992 | US5094039 Gear type tool |
| 03/03/1992 | US5092720 Method for determination of longitudinal and profile modification of tool gear tooth surface |
| 02/20/1992 | DE4117219C1 Fine machining of gearwheels - involves tool teeth narrower than teeth of gearwheel being mfd. |
| 02/04/1992 | US5084965 Process to cut hour glass screws |
| 01/14/1992 | US5079877 Method for manufacture of toothed abrasive tool and method for finish-machining therewith |
| 12/24/1991 | US5074080 Tool for the precision working of tooth flanks of hardened gears |
| 12/11/1991 | EP0362388A4 Method of making an abrasive geared instrument and method of using it for finishing |
| 12/11/1991 | EP0352335A4 Method of determining longitudinal and profile modifications to a tool tooth surface |
| 12/11/1991 | EP0348525A4 Machine tool for making and trimming of instruments and finishing of gears |
| 11/05/1991 | US5062742 Angular interlock for the replaceable wafer of a shaper cutter |
| 10/31/1991 | WO1991010528A3 Gear-shaped tool and method of generating gears |
| 10/01/1991 | US5052865 Deburring apparatus |
| 09/25/1991 | EP0447648A1 Hob |
| 09/03/1991 | US5044127 Gear-shaped tool and method of generating gears |
| 07/23/1991 | US5033239 Disposable hob and method of grinding the same |
| 07/17/1991 | WO1991010528A2 Gear-shaped tool and method of generating gears |
| 07/17/1991 | EP0437391A1 Perfectioned milling unit, especially for the milling of teeth |
| 07/17/1991 | CA2069100A1 Gear-shaped tool and method of generating gears |
| 07/16/1991 | US5031491 Tool device |
| 07/09/1991 | US5030038 Hobbing tool for finishing gears |