Niles Werkzeugmaschinen Gmbh

Kapp Werkzeugmaschinen Gmbh

Kapp Niles Gmbh & Co. Kg

Sergiy Grinko

A method for grinding a gear wheel by a worm grinding wheel in a grinding machine, wherein the tooth flanks of the gear wheel are ground by the abrasive flanks of the profiling of the worm grinding wheel. In order to increase the productivity of the grinding, the method includes the following steps: a) calculating the engagement ratios between the abrasive flanks of the profiling of the worm grinding wheel and the tooth flanks of the gear wheel, wherein the size of the profile forming zone is determined; b) determining a geometry modified in respect of the geometry determined according to step a) such that the profile forming zone is minimal; c) profiling the worm grinding wheel with the geometry which has thus resulted; d) grinding the gear wheel by the worm grinding wheel profiled according to step c).

Method for grinding a gear wheel by means of a worm grinding wheel, and a dressing roll for dressing the worm grinding wheel

A method for grinding a gear toothing, in which a target value with a tolerance range is defined for the tooth width. The method includes: a) measuring the location of the surface of the tooth flanks of the gear at least two axial positions offset in the direction of the axis of rotation; b) determining the actually present allowance of the gear based on the measured values determined in step a); c) grinding the toothing by radial infeed of the grinding tool relative to the toothing, c1) wherein the radial infeed corresponds to the target value of the tooth width, if the determination under step b) indicated that such an allowance is present on all tooth flanks that material will be removed from all tooth flanks, or c2) wherein the radial infeed takes place at a value higher than the target value of the tooth width, the higher value still corresponding to the tolerance range for the tooth width, if the determination under step b) indicated that such an allowance is present on all tooth flanks that material will be removed from all tooth flanks only with increased radial infeed.

Method for grinding the toothing of a gear

A method for producing a workpiece having a toothing or profiling, including the steps: a) soft machining the workpiece to produce the toothing or profiling; b) hardening the toothing or profiling; c) hard fine machining the toothing or profiling with a first tool that is a grinding worm, a grinding wheel or a honing wheel, wherein the first tool has a base body with a first elastic modulus; d) reinforcement of at least a section of the workpiece by shot blasting; and, following step d), e) repeated hard fine machining of the toothing or profiling with a second tool that is a grinding worm, a grinding wheel, a set of grinding wheels or a honing wheel. The second tool has a plastic or rubber base body with a second elastic modulus which is at most 33% of the first elastic modulus.

Method for producing a workpiece provided with a toothing or profiling

A method for dressing a grinding worm using a dressing roll that engages the grinding worm to profile its helical grinding profile. The dressing roll is produced by: a) producing a disk-shaped base body a profiled surface for receiving a layer of abrasive particles, wherein the surface is at least partially tooth-shaped in a radial cross section, b) positioning the abrasive particles on the profiled surface, c) profiling the base body provided with abrasive particles by removing outer sections of the abrasive particles with a profiling tool so that the abrasive profile of the dressing roll is created. Production of the profiled surface takes place in step a) so that the distance between the profiled surface and the abrasive profile changes during advancing from the root region to the tip region at a flank of the tooth-shaped surface, measured in the radial cross section perpendicular to the profiled surface.

Method for dressing of a grinding worm by means of a dressing roll and dressing roll

A method for dressing a grinding worm using a dressing roll that engages the grinding worm to profile its helical grinding profile. The abrasive profile of the dressing roll is at least partially tooth-shaped in a radial cross section and extends radially from a root region to a tip region. The dressing roll is produced by: a) producing a counterpart having an inner surface; b) positioning and fixing a layer of abrasive particles on the tooth-shaped surface; c) producing a disk-shaped base body of the dressing roll and connecting the base body with a carrier layer for the abrasive particles; d) demolding the base body; e) profiling the base body. Step a) includes providing the counterpart with the surface so that the distance between the profiled surface and the abrasive profile changes during advancing from the root region to the tip region at least at one flank of the surface, measured in the radial cross section perpendicular to the profiled surface.

A method for hard fine machining of a workpiece with a worm-shaped cutting tool, wherein the workpiece has a profiling along its circumference. The cutting tool has a machining surface. A hard machining process of the profiling is carried out at simultaneous synchronized rotation of the workpiece around its axis and of the cutting tool around its axis with given meshing of the machining surface into the profiling by moving the cutting tool in the direction of the axis of the cutting tool. A shift movement is superposed to the cutting tool in the direction of the axis of the cutting tool during the hard machining. The shift movement includes at least one first section at which the cutting tool is moved in one of its axial directions and of at least one second section at which the cutting tool is moved in the other of its axial directions.

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Coburg, Germany

Sergiy Grinko