A machine for machining workpieces includes a machine frame (110, 120), a honing ring carrier (60) which is mounted on the machine frame and in which a honing ring or a honing ring blank is clampable and rotationally drivable about its central axis, and a workpiece spindle module (50) having a workpiece spindle (54), wherein a workpiece which is to be machined with the honing ring clamped in the honing ring carrier (60) is mountable in the region of a free end of the workpiece spindle (54). The machine further includes a grinding module (130) for profiling a honing ring as a result of grinding a honing ring blank, wherein the grinding module (130) is arranged in such a manner on the machine frame (110, 120) that a grinding wheel of the grinding module (130) can be positioned relative to the honing ring carrier (60) inside a truly three-dimensional space. The profiling of a honing ring and the honing of a workpiece can consequently be effected in the same clamping setup of the honing ring. Problems, which are produced as a result of inaccurate centering when (re-)clamping the honing ring, are avoided as a result. An externally profiled tool which is specific to honing rings, e.g. a diamond gear wheel, is not required to produce the honing ring.

The invention relates to a tool for dressing or cutting teeth of fine machining tools, which tool makes it possible to exactly reproduce, in a simple manner, the required tooth system geometry on the fine machining tool which is to be dressed or in which teeth are to be cut. The tool is annular and has a set of internal teeth, the teeth of which mesh, during the tooth-cutting or dressing operation, with the set of external teeth of the fine machining tool in which teeth are to be cut or which is to be dressed. At the same time, the tool has a central longitudinal axis, which extends through the centre point of the opening surrounded by the tool. According to the invention, the set of internal teeth is now formed on a ring element, which is at most 5 mm thick and is produced from a diamond material. The teeth of the set of internal teeth have cutting edges, by means of which said teeth remove material of the fine tool during the tooth-cutting or dressing machining process. The ring element is supported by a support ring, on which at least one support element associated with the support ring opening of the support ring is provided. The ring element is supported on said support element. The teeth of the set of internal teeth formed on the ring element protrude beyond the edge of the support element facing the support ring opening at least over part of the length of the cutting edges of said teeth in the direction of the central longitudinal axis of the tool.

A method for machining an internally toothed workpiece, in which the workpiece is clamped into a toothed honing machine, and in which at least one tool that is at least partially made of a high-hardness cutting material is guided along respective teeth of the internally toothed workpiece, in order to carry out hard-fine machining of the teeth of the internally toothed workpiece.

Disclosed is a method for dressing a single- or multi-thread grinding worm (34) in which a main rolling movement between the grinding worm and a gear-like dressing tool (90) is brought about. In order to create flank modifications on the grinding worm, an additional relative movement is superimposed on the main rolling movement. In addition, an auxiliary drive specifically designed for such a method, a correspondingly designed machine tool and a dressing tool for carrying out the method are disclosed.

A gear cutting machine for gear cutting a workpiece (W) using a gear shaped cutter (17), by engaging and rotating the workpiece (W) that can rotate around a workpiece axis and a gear shaped cutter (17) that can rotate around a cutter axis, while cutting and feeding the gear shaped cutter (17), including: rough cutting at a cross axis angle to the cutter axis, then moving the cutter axis by moving a predetermined angle around the workpiece axis, and performing finish cutting such that the cutter axis has an angle with regard to the workpiece axis in a plane that includes the feeding axis direction and the cutting direction after moving.

A machine for honing gears comprises a workpiece spindle, the spindle axis of which is oriented vertically, wherein a workpiece to be machined is attachable in the region of a free end of the workpiece spindle, a honing ring carrier in which a honing ring for machining the workpiece attached to the workpiece spindle is clampable and is drivable in rotation about its central axis, and a machine frame on which the workpiece spindle and the honing ring carrier are mounted. The machine frame surrounds the honing ring carrier. The honing ring carrier is additionally mounted at two bearing points on the machine frame, said bearing points being substantially diametrically opposite one another with regard to the honing ring carrier, so as to be movable linearly along a horizontal axis which extends through the bearing points and so as to be movable in rotation about this axis. The machine has a simple and compact structure. The machine frame serves not only as a structural element for mounting the individual components of the machine and all required shafts, but at least partially also to form a working space in which the machining takes place.

A method for grinding a gear wheel by a worm grinding wheel in a grinding machine, wherein the tooth flanks of the gear wheel are ground by the abrasive flanks of the profiling of the worm grinding wheel. In order to increase the productivity of the grinding, the method includes the following steps: a) calculating the engagement ratios between the abrasive flanks of the profiling of the worm grinding wheel and the tooth flanks of the gear wheel, wherein the size of the profile forming zone is determined; b) determining a geometry modified in respect of the geometry determined according to step a) such that the profile forming zone is minimal; c) profiling the worm grinding wheel with the geometry which has thus resulted; d) grinding the gear wheel by the worm grinding wheel profiled according to step c).

The present disclosure relates to a method for dressing a multithread grinding worm, in which a flight of the multithread grinding worm is machined by means of a dressing tool. During machining of the multithread grinding worm, one of several flights of the grinding worm is eliminated, so that the number of flights of the grinding worm is reduced, thereby increasing the service life of the dressing tool and reducing the number of dressing tools to be kept in stock.

A gear cutting machine for gear cutting a workpiece (W) using a gear shaped cutter (17), by engaging and rotating the workpiece (W) that can rotate around a workpiece axis and a gear shaped cutter (17) that can rotate around a cutter axis, while cutting and feeding the gear shaped cutter (17), including: rough cutting at a cross axis angle to the cutter axis, then moving the cutter axis by moving a predetermined angle around the workpiece axis, and performing finish cutting such that the cutter axis has an angle with regard to the workpiece axis in a plane that includes the feeding axis direction and the cutting direction after moving.

A method for dressing a honing tool using a dressing tool which during the dressing operation rolls at an axial intersection angle with the honing tool. The teeth thereof which move into engagement with the teeth of the dressing tool each have an upper face which is to be dressed and tooth flanks which are also to be dressed.