Device and method for green machining bevel gears

A device for use in the green machining of bevel gears, having a Computer-Numerically-Controlled (CNC) machining station for gear cutting bevel gear teeth into a gear blank, the machining station having a first tool spindle for receiving a gear-cutting tool for cutting the teeth, which tool is a rotary cutter head, and a first workpiece spindle for gripping and rotating the gear blank, wherein

• during the gear cutting in the machining station, the first workpiece spindle having the gear blank is situated below or above the first tool spindle having the gear-cutting tool,
• the device additionally has at least one pre-machining station having a tool holder and a second workpiece spindle for receiving a workpiece blank, the device characterized in that
• the machining station forms a mechanical functional unit together with the pre-machining station, in which unit the workpiece blank experiences first green machining in the pre-machining station while being chucked in the second workpiece spindle, to then be transferred after the first green machining as the gear blank to the machining station, and have the bevel gear teeth be cut into the gear blank at the machining station to form the bevel gear, and
• in that the transfer of the gear blank is from the second workpiece spindle to the first workpiece spindle via movement of the tool holder, including rotation of the tool holder and gear blank, between a position where the gear blank is received by the tool holder from the second workpiece spindle and a position where the gear blank is received by the first workpiece spindle from the tool holder, and
• in that the machining station and the pre-machining station are linked to one another by control technology configured to control the device to perform the first green machining, the transfer, and the bevel gear teeth cutting.