A machining jig holds a workpiece with respect to a tool when machining the workpiece with the tool, the workpiece including a ridge that projects from an outer periphery of a cylindrical section in a radial direction and that extends so as to intersect a peripheral direction. The machining jig includes a holding jig that includes a cylindrical body section that is disposed at an outer periphery of the workpiece and a stopping section that projects inwardly from the body section and that stops a face of a surface of the ridge on a side where the tool leaves a processing portion of the ridge; and a coaxial base that is coaxial with the holding jig and to which the holding jig is coaxially fixed.

A machining jig holds a workpiece with respect to a tool when machining the workpiece with the tool, the workpiece including a ridge that projects from an outer periphery of a cylindrical section in a radial direction and that extends so as to intersect a peripheral direction. The machining jig includes a holding jig that includes a cylindrical body section that is disposed at an outer periphery of the workpiece and a stopping section that projects inwardly from the body section and that stops a face of a surface of the ridge on a side where the tool leaves a processing portion of the ridge; and a coaxial base that is coaxial with the holding jig and to which the holding jig is coaxially fixed.

A workholding apparatus (2) having jaws (5) comprising interchangeable adapter blocks (12) that enable a single workholding apparatus (2) to accommodate workpieces (22) having a range of inner bore diameters.

The present disclosure relates to an apparatus for chamfering at least one edge of the gearing at the front side of a workpiece having internal gearing comprising at least one rotatably supported workpiece holder for holding the workpiece and comprising at least one rotatably supported tool holder for holding at least one chamfer hob, possibly a chamfer cut hob, wherein the tool holder is arranged and/or arrangeable next to a workpiece held in the workpiece holder and a chamfer hob held in the tool holder is arrangeable by means of a tool arbor in the region of the center opening of the workpiece formed by the internal gearing to be brought into engagement with an edge of the internal gearing on the upper side and/or on the lower side of the workpiece.

The present disclosure relates to an apparatus for chamfering at least one edge of the gearing at the front side of a workpiece having internal gearing comprising at least one rotatably supported workpiece holder for holding the workpiece and comprising at least one rotatably supported tool holder for holding a chamfer hob, possibly a chamfer cut hob, wherein the tool holder is arranged at an internal hob arm whose free end can be traveled by a machine axis of the apparatus at least partly into the center opening formed by the internal gearing of the workpiece.

The invention relates to a method for creating or machining gears on workpieces (W1, W2), in which a rolling first machining engagement between a machining tool (WF; WS) that is driven about its rotation axis (B) and a first workpiece that is rotatable about the rotation axis (C1) of a first workpiece-side spindle (11) is realized at a first location on a gear-cutting machine (100; 200) by means of a tool-side spindle drive motor (22), and in which a second machining engagement is realized at a second workpiece, different from the first workpiece, that is rotatable about the rotation axis of a second workpiece-side spindle (12) that is different from the first workpiece-side spindle, wherein the machining tool can execute, relative to the first workpiece-side spindle, a movement, serving as an axial infeed movement in the first machining engagement, along a tool-side machine axis (Z) that has a direction component in the direction of the first workpiece-side spindle axis and in particular extends parallel thereto, wherein, after the first machining engagement, a tool-side positioning movement that takes place along this tool-side machine axis and allows the second machining engagement is carried out, wherein the second machining engagement is a machining engagement that is identical to the first machining engagement in terms of type of machining, is effected using the same tool-side spindle drive motor as in the first machining, and is carried out in the gear-cutting machine at a second point that is different from the first point.

The invention relates to a method for creating or machining gears on workpieces (W1, W2), in which a rolling first machining engagement between a machining tool (WF; WS) that is driven about its rotation axis (B) and a first workpiece that is rotatable about the rotation axis (C1) of a first workpiece-side spindle (11) is realized at a first location on a gear-cutting machine (100; 200) by means of a tool-side spindle drive motor (22), and in which a second machining engagement is realized at a second workpiece, different from the first workpiece, that is rotatable about the rotation axis of a second workpiece-side spindle (12) that is different from the first workpiece-side spindle, wherein the machining tool can execute, relative to the first workpiece-side spindle, a movement, serving as an axial infeed movement in the first machining engagement, along a tool-side machine axis (Z) that has a direction component in the direction of the first workpiece-side spindle axis and in particular extends parallel thereto, wherein, after the first machining engagement, a tool-side positioning movement that takes place along this tool-side machine axis and allows the second machining engagement is carried out, wherein the second machining engagement is a machining engagement that is identical to the first machining engagement in terms of type of machining, is effected using the same tool-side spindle drive motor as in the first machining, and is carried out in the gear-cutting machine at a second point that is different from the first point.

A device having at least two grippers (102) for the form-fitting gripping of a bevel gear (1) having a cone face, a heel region, and an axis of rotation (RA). The at least two grippers (102) can be infed radially in relation to the axis of rotation (RA), and each of the grippers (102) has at least one inner region (104) for interacting with the cone face, and a counter holder (103) for interacting with the heel region. Each gripper (102) can have a holder (101) having a changeable angle of attack on an inner region (104) of the holder, and the holder (101) can be movably mounted on the gripper (102) so that it adapts its effective angle of attack in relation to the inclination of the cone face of the bevel gear (1) during radial infeed in the direction of the bevel gear (1).

The invention concerns a method to generate and/or machine gear teeth on a workpiece, wherein the workpiece is subjected to a movement from a first location where the workpiece, while being held by a clamping device connected to a workpiece spindle, is brought into machining engagement with a first tool, to a second location where the work piece, while remaining in its clamped condition, is brought into machining engagement with a second tool, wherein prior to performing the movement, the connection between the clamping device and the workpiece spindle is released, and after the movement, the clamping device is connected to another workpiece spindle for the machining engagement with the second tool.

The invention concerns a method to generate and/or machine gear teeth on a workpiece, wherein the workpiece is subjected to a movement from a first location where the workpiece, while being held by a clamping device connected to a workpiece spindle, is brought into machining engagement with a first tool, to a second location where the work piece, while remaining in its clamped condition, is brought into machining engagement with a second tool, wherein prior to performing the movement, the connection between the clamping device and the workpiece spindle is released, and after the movement, the clamping device is connected to another workpiece spindle for the machining engagement with the second tool.