Niles Werkzeugmaschinen Gmbh

Kapp Gmbh

Kapp Werkzeugmaschinen Gmbh

Frank Mueller

Thomas Schenk

Ralf Dremel

A method for hard fine machining of the toothing of a gear that has an axis of rotation, wherein the toothing is machined with a hard fine machining tool. The machining tool rotates around an axis of rotation during hard fine machining. The method includes: a) Providing a hard fine machining tool that has axially adjacent machining zones, including a first zone for the grinding the toothing and a second zone for fine grinding and/or polishing the toothing; b) Grinding the toothing with the first zone, wherein a first pivoting angle exists between the axis of rotation of the gear and the axis of rotation of the machining tool; c) Fine grinding and/or polishing the toothing with the second zone of the machining tool, wherein a second pivoting angle exists, which is different from the first pivoting angle, between the axis of rotation of the gear and the axis of rotation of the machining tool.

Method for hard fine machining of the toothing of a gear or of a gear-like profile of a workpiece

A method for the dressing of a multi-thread grinding worm by a dressing roll, wherein the grinding worm has at least two screw channels which are arranged parallel to another, which screw channels extend helically around an axis of the grinding worm and wherein the dressing roll has at least two adjacent dressing profiles which are arranged along an axis of the dressing roll, wherein the dressing profiles of the dressing roll are guided simultaneously through adjacent screw channels of the grinding worm during the dressing of the grinding worm. To improve the precision of the dressing the method includes the steps: a) Execution of a first partial dressing process at which the dressing profiles of the dressing roll are guided simultaneously through first adjacent screw channels of the grinding worm; b) Execution of at least one second partial dressing process at which the dressing profiles of the dressing roll are guided simultaneously through second adjacent screw channels of the grinding worm, wherein the second adjacent screw channels are, compared with step a), offset in the direction of the axis of the grinding worm by at least one screw channel of the grinding worm.

Method for the dressing of a multi-thread grinding worm by means of a dressing roll

The invention relates to a method for machining a workpiece, preferably of a gear, with a multiple thread worm-shaped cutting tool with several parallel running helical and ridge-shaped cutting edges. To obtain a higher quality of the machining operation the invention proposes the following steps for the method: a) Bringing the cutting tool with the workpiece into mesh by inserting of a first helical cutting edge of the cutting tool in a first gap of the workpiece which has to be machined or has to be produced and machining of the workpiece with the cutting tool in this contact situation; b) Bringing the cutting tool and the workpiece out of mesh; c) Bringing the cutting tool with the workpiece again into mesh by inserting of the first helical cutting edge of the cutting tool in a second gap of the workpiece which is different from the first gap and machining of the workpiece with the cutting tool.

Method for machining a workpiece with a worm-shaped cutting tool

A dressing tool produces a plurality of first radial sections in a first flank of a first screw channel in a grinding worm, and a plurality of second radial sections in a second flank of a second screw channel in the grinding worm. Each radial section extends only a portion of a total radial height of the respective flank, the portion being less than the total radial height of the respective flank. Each first radial section in the first screw channel is radially displaced with respect to a corresponding second radial section in the second screw channel.

Method for dressing of a multiple thread grinding worm and for grinding and grinding worm

The invention relates to a hard finish machine () for hard finishing of a workpiece (), comprising at least two different hard finish tools () which are arranged on a tool spindle (), wherein the tool spindle () is arranged movable in the direction (Y) of its axis () on a tool carrier (), wherein the tool carrier () is translational movable relatively to a machine bed () and wherein the hard finish machine furthermore comprises cooling lubricant supplying means () for the supply of cooling lubricant to the machining region between the workpiece () and the hard finish tool (). To work in all possible tool and method combinations with optimized cooling lubricant supply conditions the invention proposes that the cooling lubricant supplying means () comprise at least a first cooling lubricant nozzle (9') having at least one opening for a stream of cooling lubricant and at least a second cooling lubricant nozzle (&#x2033;) having at least one opening for a stream of cooling lubricant, wherein the two cooling lubricant nozzles (&#x2033;) are arranged movable relatively to another in the direction (Y) of the axis () of the tool spindle ().

Hard finish machine for hard finishing of a workpiece

The invention relates to a hard finish machine () for hard finishing of a workpiece (), comprising at least two different hard finish tools () which are arranged on a tool spindle (), wherein the tool spindle () is arranged movable in the direction (Y) of its axis () on a tool carrier (), wherein the tool carrier () is translational movable relatively to a machine bed () and wherein the hard finish machine furthermore comprises cooling lubricant supplying means () for the supply of cooling lubricant to the machining region between the workpiece () and the hard finish tool (). To work in all possible tool and method combinations with optimized cooling lubricant supply conditions the invention proposes that the cooling lubricant supplying means () comprise at least one nozzle element (), wherein the nozzle element () comprises a nozzle chamber (), wherein the nozzle chamber () is limited by two facing wall elements () which define a stream exit opening () for the cooling lubricant and wherein at least one of the wall elements () is arranged movable for the variation of the stream exit opening ().

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Meeder, Germany

Frank Mueller