A gear machining apparatus causes a machining tool and a workpiece to rotate at a high speed in synchronization with each other to machine a highly accurate gear through cutting. The machining tool is manufactured such that each of pitches between tool blades of the machining tool is an integer multiple of a pitch between teeth of the gear, the integer multiple being equal to or larger than double. By using the machining tool for cutting performed by the gear machining apparatus, the number of the tool blades of the machining tool, which are brought into contact with the workpiece at the same time, is reduced. Thus, it is possible to suppress occurrence of self-excited vibrations during cutting by reducing the cutting resistance. Thus, it is possible to enhance the tooth trace accuracy of the gear.

Device for chamfer machining of a toothed workpiece, wherein the device comprises at least one workpiece spindle having a rotatably mounted workpiece holder for holding the workpiece, and a machining head that is movable relative to the workpiece spindle via at least one linear axis, wherein at least one tool spindle having a rotatably mounted tool holder for holding at least one tool for machining a workpiece held in the workpiece holder is provided on the machining head, and wherein a milling spindle having a rotatably mounted milling cutter holder for holding an end milling cutter for chamfer machining an edge of a toothing of the workpiece held in the workpiece holder is provided on the machining head, wherein the work angle of an end milling cutter held in the milling cutter holder relative to the edge of the toothing can be set via a first pivot axis.

To provide a gear machining apparatus capable of correcting a tooth trace error without using a special tool when a hob cutter is cantilever-supported. A gear machining apparatus includes a hob cutter machining a tooth profile on a workpiece, a tool spindle device rotatably cantilever-supporting the hob cutter, a workpiece spindle device rotatably supporting the workpiece, a driving device moving the tool spindle device and the workpiece spindle device relatively to each other, a measuring device measuring the value corresponding to a bending amount of the hob cutter or a rotation synchronization shift of the workpiece spindle device with respect to the tool spindle device and a correction processing unit correcting a cutting amount of the hob cutter T or the rotation synchronization shift of the workpiece spindle device with respect to the tool spindle device based on the value measured by the measuring device.

Method, comprising the method steps of: generating grinding of toothings (16), wherein a respective toothing (16) is machined by means of a plurality of grinding strokes and wherein a centering position for positioning a grinding tool (10) relative to the respective toothing (16) is predetermined for the grinding strokes, and adapting the centering position on the basis of a performance parameter (M2) of a workpiece spindle (6) accommodating the respective toothing (16).

Process of grinding and polishing flank surfaces of teeth of toothed wheels, which includes a grinding device, a polishing device, a dynamic positioning device, and a toothed wheel.