Abstract: The present disclosure relates to a process for machining a gear workpiece (100) comprising a plurality of tooth spaces (6), each of which is defined by two tooth flanks (5.1, 5.2); in said process, a gear tooth-forming tool (1) is used in order to provide at least one subset of all the tooth flanks (5.1, 5.2) with a non-periodically distributed modification of the flank geometry.

Abstract: A method which is executed in a grinding machine comprising a) rotationally driving a cup grinding wheel around an axis of rotation of a tool spindle at a first speed, b) rotationally driving a dressing tool around an axis of rotation of a dressing spindle at a second speed, c) carrying out a dressing method using the dressing tool, wherein a predetermined, fixed speed ratio is specified between the first speed and the second speed, and after steps (a), (b), and (c): i. eccentrically rotationally driving the cup grinding wheel around the axis of rotation of the tool spindle at a first machining speed using the eccentric drive, ii. carrying out a grinding method, wherein the bevel gear workpiece is machined by grinding using the cup grinding wheel.

Abstract: Clamping device having a receiving opening which is arranged concentrically to a workpiece spindle axis, wherein the clamping device is designed for clamping a gear workpiece comprising a head region and a shaft, the clamping device comprises an annular planar contact surface, which is arranged concentrically to the workpiece spindle axis, is located in a workpiece-side end region of the clamping device, and which extends essentially perpendicular to the workpiece spindle axis, wherein at least one circumferential groove is provided in the workpiece-side end region, which groove extends from an outer surface of the clamping device radially in the direction of the workpiece spindle axis and which provides the clamping device with elasticity in the region of the planar contact surface.

Abstract: A coordinate measuring apparatus, comprising a rotatably driveable receptacle for a gear workpiece and a measuring assembly, and configured to perform feed movements and measuring movements of the measuring assembly relative to the gear workpiece on a plurality of axes, the measuring assembly including an optical switch sensor which operates in a contactless manner, which is designed as a focus trigger sensor and is arranged on the measuring assembly in such a way that it is able to emit a light beam along an optical axis in the direction of the gear workpiece, wherein a scanning movement relative to the gear workpiece can be carried out with the focus trigger sensor by using one or more of the axes, and wherein a switching signal can be provided by the focus trigger sensor whenever the gear workpiece has reached a nominal distance relative to the focus trigger sensor.

Abstract: A method for machining the tooth flanks of a bevel gear workpiece includes carrying out correction machining of a concave tooth flank and a convex tooth flank of at least one tooth gap by, after machining using a first machine setting, cutting free of the concave tooth flank by the bevel gear workpiece executing a workpiece rotation in a first rotational direction having a predefined first absolute value in relation to a gear-cutting tool and/or cutting free the convex flank by the bevel gear workpiece executing a workpiece rotation in another rotational direction having a predefined second absolute value in relation to the gear-cutting tool, and finish machining the concave tooth flank using a second machine setting, which differs from the first machine setting, and finish machining the convex tooth flank using a third machine setting, which differs from the second machine setting.

Abstract: A method for setting up an apparatus (100) which is formed for machining a workpiece with a tool (20) comprises: providing the tool (20) in the region of the apparatus (100), providing a line assembly (53) in the region of the apparatus (100), which is fitted with at least one outlet nozzle, transferring a first linear axis (A1) of the apparatus (100) to a changing position by moving at least one axis of the apparatus (100), receiving the tool (20) by a tool spindle (21) which is carried by the first linear axis (A1), and the line assembly (53) plus the at least one outlet nozzle by a clamping system which is carried directly or indirectly by the first linear axis (A1), or by an additional axis, wherein the receiving of the tool (20) and the receiving of the line assembly (53) occur successively or simultaneously.

Abstract: A roughness measurement sensor (15), comprising a sliding element and a sensor tip (15.4), wherein the sensor tip (15.4) is arranged in the region of the extremal end of a sensor arm (13.1) which has a longitudinal extension parallel to a longitudinal axis (LA) and is mounted in a lever-like manner. In some embodiments, the sliding element is formed in the manner of a skid (15.3), and the skid (15.3) lies, as viewed in a sectional plane (SE), perpendicularly to the longitudinal axis (LA), laterally adjacent to the sensor tip (15.4).

Abstract: A grinding machine, includes a pivotable tool spindle with a workpiece spindle adapted to receive a gearwheel workpiece and for rotationally driving the gearwheel workpiece about a workpiece spindle axis, wherein the tool spindle is configured to receive a grinding tool and rotationally drive the grinding tool about a tool spindle axis, and is carried by a pivot axis in such a way that the tool spindle together with the grinding tool can be pivoted about the pivot axis, and wherein the pivot axis (A) intersects the workpiece spindle axis (C) in a common plane projection, and wherein the pivot axis is offset laterally relative to the workpiece spindle axis and does not intersect the workpiece spindle axis.

Abstract: Methods for machining may include: (a) providing a bevel gear on a workpiece spindle of a machine, the gear having a tooth having a head, (b) rotationally driving the gear about an axis of the spindle, (c) providing a first machining tool on a tool spindle of the machine, (d) machining the gear by means of the first machining tool, (e) providing a grinding tool as a second machining tool on the tool spindle or on a further spindle, (f) driving the grinding tool to rotate about a tool axis of the tool spindle, wherein the grinding tool comprises a concave machining region that has a ring shape and is arranged concentrically in relation to the tool axis, and (g) advancing the grinding tool in relation to the gear to bring the machining region into chip-removing operational connection with an edge in a region of the head to produce a chamfer on the edge by grinding.

Abstract: Bevel gear cutting machines having multiple numerically-controllable axes, a workpiece spindle, which accommodates a bevel gear coaxially in relation to a workpiece spindle axis, and a deburring device having a deburring spindle for accommodating at least one first deburring tool. The bevel gear cutting machines may chamfer tooth edges of the bevel gear in two passes, where, in a first pass, first chamfers are provided on the tooth edges by using the first deburring tool, and, in a second pass, second chamfers are provided in the region of the first chamfers by using the first deburring tool or by using a second deburring tool in a continuous procedure, in which the bevel gear and the first or second deburring tool rotate in a coupled manner while engaged with one another.

Abstract: A workpiece clamping system for a measuring machine includes a rotary table disposed in a workpiece rotation axis and includes a chuck for the concentric accommodation of a workpiece, a rotary drive for the rotary table, an upper centering tip mountable or mounted on the measuring machine in the workpiece rotation axis vertically opposed to the rotary table, and a lower centering tip mountable or mounted on the rotary table in addition to the chuck for accommodating a workpiece between the centering tips instead of in the chuck, wherein the lower centering tip is provided and formed to be concentrically clamped in the chuck instead of a workpiece, and in that the workpiece clamping system is provided with a conveying device for vertically or vertically and horizontally conveying the lower centering tip into and from its clamping position in the chuck.

Abstract: A method and apparatus for carrying out contact measurement on at least one tooth flank of a gearwheel workpiece including the steps of: predetermining or defining a maximum region relating to the tooth flank, predetermining or defining a critical region relating to the tooth flank that overlaps the maximum region at least in part, executing relative movements of a probe of a measuring apparatus to guide the probe along the tooth flank to obtain actual measured values with a first resolution for a plurality of locations on the tooth flank within the maximum region, and obtain actual measured values with a second resolution for a plurality of locations on the tooth flank within the critical region, wherein the second resolution is higher than the first resolution.

Abstract: A method for operating a gear cutting machine comprising the following steps: machining a first workpiece (1) in the machine, wherein the first workpiece (1) heats up due to the machining, determining at least one characteristic workpiece variable in the first workpiece (1) in the heated state, wherein a measuring device of the machine is used for the determination, determining a compensation on the basis of the at least one characteristic workpiece variable of the first workpiece (1) and at least one characteristic workpiece variable of a reference workpiece, wherein the characteristic workpiece variable of the reference workpiece is determined in the machine after a steady-state temperature has been reached, at least one compensation value is determined in the course of determining the compensation, adjusting of the machine setting by taking into account the at least one compensation value, and machining a further workpiece (2) in the machine.

Abstract: Method for the face-side chamfering of gear teeth of a workpiece (20) in a CNC-controlled multiaxis machine including inserting a tool (100) in the multiaxis machine, wherein the tool (100) has at least one cutting tooth (111) having a first rake face and a second rake face, driving the tool (100) in a first rotational direction, executing first CNC-controlled relative movements while the tool (100) rotates in the first rotational direction to chamfer a first face-side edge (24) of a first tooth of the gear teeth using the first rake face of the tool (100), and executing second CNC-controlled relative movements while the tool (100) rotates in the first rotational direction, to chamfer a second face-side edge (25) of the first tooth or another tooth of the gear teeth using the second rake face of the tool (100), and apparatus therefor.

Abstract: A method for operating a plurality of measuring machines (20.1, 20.2), wherein measuring machines (20.1, 20.2) of the same type are concerned which are designed for the measurement of same parts (4), having the following steps: —measuring a first quantity of same parts (4) in a first measuring machine (20.1); —measuring a second quantity of same parts in a second measuring machine (20.2); —performing a comparison process, wherein within the scope of said comparison process at least one value (W1) of the first quantity is correlated with at least one respective value (W2) of the second quantity in order to determine therefrom; and deviations between measurements of the first measuring machine (20.1) and measurements of the second measuring machine (20.2).

Abstract: Method for power skiving a workpiece (50) having a workpiece axis of rotation (R2) and having a rotationally-symmetrical, periodic structure using a power skiving tool (100).

Abstract: 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°.

Abstract: Cutter head for accommodating multiple cutters, wherein the cutter head has a separate receptacle opening for each of the cutters, and wherein the cutter head includes clamping means for clamping the cutters in the receptacle openings. A cavity is implemented in the cutter head in the region of at least one of the receptacle openings, which is separated by a thin wall or layer from this receptacle opening, and the cavity can be filled with a fluid and a pressure can be applied thereto.

Abstract: Method for compensating temperature-induced deviations in a grinding machine includes controlling the movements of the dressing tool relative to the grinding tool in order to relatively move the dressing tool towards the grinding tool; checking whether a first-cut detection signalizes a contact of the grinding tool and the dressing tool; repeating the controlling and checking steps until a contact between the grinding tool and the dressing tool is detected, and when the contact is detected, then (i) recording the Current Position, and (ii) carrying out a compensation calculation using the Current Position and a reference position.

Abstract: A workpiece clamping systems for a measuring machine includes a rotary table disposed in a workpiece rotation axis and includes a chuck for the concentric accommodation of a workpiece, a rotary drive for the rotary table, an upper centering tip mountable or mounted on the measuring machine in the workpiece rotation axis vertically opposed to the rotary table and a lower centering tip mountable or mounted on the rotary table in addition to the chuck for accommodating a workpiece between the centering tips instead of in the chuck, wherein the lower centering tip is provided and formed to be concentrically clamped in the chuck instead of a workpiece, and in that the workpiece clamping system is provided with a conveying device for vertically or vertically and chuck.