The invention relates to a method for machining a tooth edge formed between a tooth flank and an end face (2b) of the workpiece tooth arrangement (3), by means of a tool tooth arrangement (13), in which method the tooth arrangements (3, 13) rotate about their respective tooth arrangement rotational axes (C, B) in mutual rolling coupling, wherein the two tooth arrangement rotational axes (C, B) are substantially parallel to each other and the machining is carried out over a plurality of workpiece rotations, and wherein a first relative movement (Z) between the workpiece tooth arrangement (3) and the tool tooth arrangement (13), parallel to the workpiece rotational axis, is carried out and the position of the envelope (28) of the tool tooth rolling positions (29i) is shifted relative to the engagement position of said envelope with the tooth flank of the workpiece tooth arrangement in the plane (X-Y) orthogonal to the workpiece rotational axis (C), transversely to the profile of the workpiece tooth arrangement, by means of a second relative movement (V), which in particular is varied according to the movement state of the first relative movement. The invention also relates to a chamfering tool, to a control program having control instructions for carrying out the method, and to a gear-cutting machine.

Bevel gear having a main body comprises a heel-side skin surface. The bevel gear has at least one tooth gap, which exits from the main body in the region of the skin surface. The tooth gap has a tooth base, the profile of which is defined by a base cone angle in relation to the workpiece axis of rotation. A concentric circumferential ring structure is provided on the skin surface, which is raised in relation to the skin surface, and which results in a heel-side exit angle between the tooth base and the ring structure, which is in the range between 125° and 160°.

Bevel gear having a main body comprises a heel-side skin surface. The bevel gear has at least one tooth gap, which exits from the main body in the region of the skin surface. The tooth gap has a tooth base, the profile of which is defined by a base cone angle in relation to the workpiece axis of rotation. A concentric circumferential ring structure is provided on the skin surface, which is raised in relation to the skin surface, and which results in a heel-side exit angle between the tooth base and the ring structure, which is in the range between 125° and 160°.

A method directed to gear cutting tools and gear cutter job consolidation resulting in a single cutter capable of cutting a plurality of different members of a part family. The method comprises a multi-step approach comprising a first step of defining a temporary master. A second step creates a virtual master which is especially well-suited for accommodating the requirements of the jobs in the consolidation variety. A third step determines cutting depths and optimized machine settings for all consolidation jobs using the virtual master.

A method directed to gear cutting tools and gear cutter job consolidation resulting in a single cutter capable of cutting a plurality of different members of a part family. The method comprises a multi-step approach comprising a first step of defining a temporary master. A second step creates a virtual master which is especially well-suited for accommodating the requirements of the jobs in the consolidation variety. A third step determines cutting depths and optimized machine settings for all consolidation jobs using the virtual master.

A method for producing titanium powder containing a solid-soluted nitorogen comprises the step of heating titanium powder comprised of titanium particles in a nitrogen-containing atmosphere to dissolve nitrogen atoms and form a solid solution of nitrogen atom in a matrix of the titanium particle.

A large gear involute artifact assembled with mandrel used as physical datum of precision traceability and measurement transmission for large gear involute is proposed. The artifact comprises a large gear involute artifact stripe, a mandrel, a backing plate, a counterweight shaft, an adjustable counterweight ring, the adjustable screws of counterweight, the connecting screws for backing plate, the connecting screws for artifact and an eccentric multi-ball bearing. The structure and the rolled length of the large gear involute artifact assembled with mandrel fit the basic requirements of class-1 accuracy in the national standard of gear involute artifact GB/T 6467-2010 in China. It has advantages of long rolled length, adjustable center of mass, uniform datum, compact structure, and portability. It adopts lightweight design, which can be installed and transported by one person manually, and is suitable for the structural design of large gear involute artifact with base-circle diameter greater than 500 mm.