US 2013/0260643 A1 · Device and Method for Machining Bevel Gears Using an Eccentrically Moved Grinding Tool

Abstract

A device has a work piece spindle for accommodating a bevel gear work piece, a tool spindle for accommodating a grinding wheel having an abrasive surface, and a plurality of drives for machining the bevel gear work piece. During machining of the bevel gear work piece, the grinding wheel rotates about the rotational axis of the tool spindle and engages the bevel gear work piece to remove material. The rotation is superimposed with an eccentric movement such that the grinding wheel only engages the bevel gear work piece at n contact regions of the abrasive surface. The device is configured to allow adjustment of the eccentric movement after a first machining phase and to specify m contact regions of the abrasive surface in a further machining pase, wherein the m contact regions do not overlap with the n contact regions.

Claims18

Dependent claims

A device for machining a bevel gear comprising:

a work piece spindle adapted to secure a bevel gear work piece, a tool spindle, a grinding wheel having an abrasive surface rotatably attached to the tool spindle, and a plurality of drives operatively controlled by a CNC controller for CNC-controlled machining of the bevel gear work piece, wherein:
the grinding wheel is configured to rotate about a rotational axis of the tool spindle, engage the bevel gear work piece and remove material therefrom;
the device is configured to superimpose said rotation with an eccentric movement, such that the grinding wheel engages the bevel gear work piece only at n contact regions along a full circle of the abrasive surface in a first machining phase, and
the device is configured to adjust said eccentric movement, such that after said first machining phase, the grinding wheel engages the bevel gear work piece in a further machining phase at only m contact regions along the full circle of the abrasive surface that do not overlap with the n contact regions.

1 more element

A method for machining bevel gear work pieces using a grinding wheel having an abrasive surface, comprising the following steps:

attaching a grinding wheel with an abrasive surface to a tool spindle,
mounting a first bevel gear work piece on a work piece spindle,
rotating the grinding wheel about a rotational axis of the tool spindle;
grinding machining the first bevel gear work piece with the grinding wheel while superimposing an eccentric movement on the rotation of the grinding wheel such that the abrasive surface only engages the material of the bevel gear work piece at n contact regions along a full circle of the abrasive surface, and further including controlling said machining with a CNC-controller;
and
further grinding machining the first bevel gear work piece or another bevel gear work piece while superimposing an eccentric movement on the rotation of the grinding wheel such that the abrasive surface only engages the material of the bevel gear work piece at m contact regions of the full circle of the bevel gear work piece, wherein the m contact regions are spatially spaced apart from the n contact regions, and further including controlling said further machining with a CNC-controller.

3 more elements

Dependencies are inferred from the claim text.

Device and Method for Machining Bevel Gears Using an Eccentrically Moved Grinding Tool

Life of this patent

Device and Method for Machining Bevel Gears Using an Eccentrically Moved Grinding Tool

Life of this patent

Abstract

Claims18