Abstract: A method for monitoring a machining process in which tooth flanks of pre-toothed workpieces (23) are machined with a finishing machine (1) is disclosed. As part of the method, a plurality of measurement values are recorded while a finishing tool (16) is in machining engagement with a workpiece. Among them are values of a power indicator which indicates a current power consumption of the tool spindle during the machining of the tooth flanks of the workpiece. A normalization operation is applied to at least some of the measurement values or to values of a quantity derived from the measurement values in order to obtain normalized values. The normalization operation depends on at least one of the following parameters: geometrical parameters of the finishing tool, in particular its outside diameter, geometrical parameters of the workpiece and setting parameters of the finishing machine, in particular radial infeed and axial feed.

Abstract: Dressing tool which has profiled elements arranged coaxially with one another and which are each provided with a profile form, which is tapered or the like in its axial cross-section and has working surfaces provided with hard-material particles. The profiled elements are delimited at their outer circumference by at least one generated surface. The dressing tool preferably includes six profiled elements arranged coaxially with one another, and a one-part or two-part metallic main body for the entire dressing tool or for a particular generated surface. The profile forms with the hard-material particles of the profiled elements may be produced by a negative process with a casting compound applied to the particular main body. This dressing tool can thus be used for a profiling of grinding worms extremely productively and precisely and also such that they can be corrected.

Abstract: In a method for pre-profiling a grinding tool, a device, in particular a gear grinding machine, for hard fine machining of workpieces and for pre-profiling grinding tools is provided, which includes a workpiece spindle for rotating a workpiece, a grinding spindle, which is feedable at least along an X-grinding-spindle-infeed-axis, for rotating a grinding tool, in particular a grinding worm or a grinding wheel, and a profiling device with a fixed first profiling plate. A grinding tool blank, in particular a grinding worm blank, is provided on the grinding spindle of the device. The device is brought into a profiling configuration. The grinding spindle is fed until the grinding tool blank is operatively connected to the first profiling plate. Finally, the grinding tool blank is pre-profiled.

Abstract: A device for transporting an object to and/or from a grinding machine includes a base, a carrier arranged on the base and rotatable with respect to the base about a first axis of rotation, a swivel device arranged on the carrier for transporting the object. The swivel device is pivotable with respect to the carrier about a second axis of rotation, and the device is designed to carry out a rotational movement of the carrier about the first axis of rotation and a swivel movement of the swivel device about the second axis of rotation at least at times simultaneously in such a way that the object can be transported by means of a transport movement of the swivel device resulting from the superimposition of the rotational movement of the carrier with the swivel movement of the swivel device.

Abstract: Disclosed is a skiving tool for machining teeth where machining marks are produced at unequal distances. Some cutting edges of a skiving tool at least partially extend at different heights along a tool axis. During machining, cutting edges arranged at different axial heights relative to the workpiece axis successively engage on a tooth flank. The engagement of the cutting edges occurs at different time intervals and at different distances in the width direction of the tooth flank. The effects of the engagement of the cutting edges on the machining process and the excitation of vibrations when the teeth produced are used therefore have a frequency spectrum of greater width and lower amplitude than if the cutting edges were to engage at equal time intervals and equal distances. The more irregular surface structure of the teeth have a positive effect on noise excitation behavior when teeth are engaging with other teeth.

Abstract: A method of generating machining of a gear-shaped workpiece (23), in particular by continuous generating grinding, in which the gear-shaped workpiece rotates about a workpiece axis (C) while in generating mesh with a generating machining tool. During machining, the gear-shaped workpiece performs an oscillating movement which is superimposed on the rotation of the gear-shaped workpiece. Also disclosed are a clamping device (22) configured to perform the method, and a system comprising such a clamping device and a control device (50). Finally, a generating machining machine comprising a clamping device of the mentioned type is also disclosed.

Abstract: With a method for data management, in particular of operating means of a machine tool, data from operating means (23, 28, 29) of the machine tool (20) is acquired and stored, at least in respect of its identification. According to the invention, this data management takes place with a machine tool (20) for producing toothed wheels or gearwheels and/or the processing of toothed systems, wherein use is made as operating means (23, 28, 29) in particular of dressing and truing tools, clamping means, grinding tools, and/or the like, wherein, for the acquisition in particular of their identification, and preferably of further parameters, such as use data and geometry data, they are in each case equipped with at least one transponder (23?, 28?, 29?). These transponders (23?, 28?, 29?) can communicate with at least one send/read unit (30) assigned to the machine tool (20), for the cableless transfer of data signals.

Abstract: An adjusting device for a machine tool comprises a base body (1), a movable body (2) movable along a moving direction (X) relative to the base body, and a drive (3) for moving the movable body relative to the base body. In order to effectively damp vibrations between the movable body and the base body (in particular so-called stray vibrations) and yet still enable rapid positioning movements of the movable body relative to the base body, the adjusting device comprises an auxiliary body (10) which can be releasably fixed to the base body and, in the released state, can be moved together with the movable body relative to the base body. The adjusting device also comprises at least one vibration damper (11) which is arranged between the auxiliary body and the movable body.

Abstract: A device for loading and unloading a machine tool for machining gears, in particular a hard fine machining machine, with a workpiece includes: a base, a carrier arranged on the base and which is rotatable with respect to the base about a first axis of rotation, a gripping device arranged on the carrier for gripping and releasing the workpiece, wherein the gripping device has at least two gripper arms which are each pivotable independently of one another about a second axis of rotation, and the gripper arms are pivotable relative to one another about the second axis of rotation in such a way that the gripper arms can assume relative to one another a gripping position for gripping the workpiece and a release position for releasing the workpiece, and the gripper arms are pivotable about the second axis of rotation synchronously with one another at least in the gripping position.

Abstract: A method for collision checking of a machining process is disclosed. A process-specific cycle is provided for the machining process. Multiple machining components are moved relative to one another with at least one machine axis on a machine tool. The machining components have at least one workpiece and one tool. The workpiece rotates about a workpiece axis and the tool rotates about a tool axis. At least one checking position is identified and corresponds to a relative position of the machining components set with the at least one machine axis. In order to check a respective checking position for collisions, a substitute machining component is used during the reproducing, which is a replica of the corresponding machining component.

Abstract: In a method of monitoring a condition of a machine tool (1) with a plurality of machine axes, a test cycle is carried out in which at least some of the machine axes are actuated and associated condition data are determined. Based on this, a condition diagnosis is carried out in which the condition data are compared with reference quantities. The reference quantities are determined from reference condition data obtained in a plurality of reference test cycles on a plurality of reference machines (2, 3, . . . , n).

Abstract: A device for machining a gear using a rotating machining tool. The device has a motor spindle having a drive motor and motor spindle shaft drivable by the drive motor for driving the machining tool. The device has an attachment structure for releasably attaching the device to a work spindle of a tool head. The attachment structure is configured so the tool axis is parallel to the work spindle axis when the device is attached to the work spindle. A device is further disclosed to connect a machining tool to a counter bearing in a simple manner. For this purpose, the counter bearing has a hollow shaft. A mandrel having first and second clamping regions are arranged at positions along the longitudinal axis of the mandrel. The mandrel is inserted through the hollow shaft along the tool axis into a longitudinal bore of the machining tool.

Abstract: A machine tool for machining pre-toothed workpieces has a workpiece carrier, a workpiece spindle with a workpiece spindle housing and a workpiece spindle shaft. The machine tool has a meshing sensor, a calibration piece, and a sensor controller which is designed to perform the following procedure: Moving the meshing sensor relative to the workpiece spindle into a calibration position in which the meshing sensor is located at the calibration piece 10; determining a response behavior of the meshing sensor by the sensor controller moving the meshing sensor relative to the calibration piece and meanwhile receiving sensor calibration signals of the meshing sensor, and moving the meshing sensor into a workpiece measuring position in which the meshing sensor is located at the workpiece, the workpiece measuring position depending on the determined response behavior.

Abstract: In a method of monitoring a condition of a machine tool (1) having a plurality of machine axes, at least a part of the machine axes is systematically actuated in a test cycle, and associated condition data are obtained by measurements. On this basis, EOL data correlating with a noise behavior of a gear train comprising a workpiece machined by the gear cutting machine are predicted. Disclosed is also the reverse direction in which condition data are predicted from EOL data.

Abstract: A method of manufacturing a modular clamping device for clamping a rotationally symmetrical body on a spindle head of a motor spindle is disclosed. The modular clamping device includes a clamping element and a first intermediate piece. In the method, a first intermediate piece assembly (22) is provided having a plurality of prefabricated, standardized first standard intermediate pieces. The first intermediate piece (210) is selected from the first intermediate piece assortment (22). The clamping element is fabricated, and the first intermediate piece is positioned relative to the clamping element such that the first intermediate piece is positioned axially between the spindle head and the clamping element when the clamping device is mounted to the spindle head.

Abstract: A control panel for a machine tool has a housing (1). The housing comprises a housing base part (2) and a housing front part (3). A display (19) and a control element panel (20, 21) are attached to the front part of the housing. In the region of the housing bottom side, the housing front part is connected to the housing base part by miter hinges so that it can be swiveled to provide access to the interior of the housing. Fold-out supports (13) make it possible to use an alphanumeric keyboard (15) for maintenance work. Indentations (5) on both sides of the housing rear allow the housing to be easily grasped. Control elements (18) are arranged in the indentations.

Abstract: A tool head for a machine tool, in particular for a gear cutting machine, has a first and a second spindle unit each having at least one spindle bearing and a spindle shaft which is rotatably mounted in the respective spindle bearing about a tool spindle axis. The respective spindle bearing can support both radial and axial forces. The spindle units are arranged coaxially to each other, and a tool is received axially between the spindle shafts. A controlled clamping device connects the spindle bearings together. A control device activates the clamping device during a machining operation and deactivates it during machining pauses. Alternatively or additionally, the tool head has an axial force element that generates an axial preload force between the spindle bearings.

Abstract: A tool changer is used for changing tools in a machine tool. The tool changer has a support structure on which a lifting carriage is guided along a vertical lifting direction. A pivot arm is pivotably mounted to the lifting carriage about a vertical pivot axis. A plurality of tool holders arranged vertically one above the other form a tool magazine. A tool gripper is attached to the pivot arm. The tool gripper grips a tool. The tool is subsequently moved between one of the tool holders and the tool spindle of the machine tool by a combined lifting and pivoting movement of the pivot arm. Optionally, an auxiliary arm pivotably attached to the pivot arm can be used to change a workpiece clamping means of the machine tool.

Abstract: A tool head for a gear cutting machine includes a first spindle unit having a first spindle shaft and a second spindle unit having a second spindle shaft. A tool is axially receivable between the first spindle shaft and the second spindle shaft. A balancing device is associated with each spindle unit. The balancing device radially surrounds the respective spindle shaft and is axially arranged between a tool-side spindle bearing of the corresponding spindle unit and the tool-side end of the corresponding spindle shaft. The tool is axially clamped between the two spindle shafts by a pull rod and a clamping element.

Abstract: A hub flange has a fixed flange configured to receive a tool body. A flange socket is formed on the fixed flange for connection to a spindle shaft. A counterflange is detachably connected to the fixed flange. The fixed flange and the counterflange are connected to each other via a conical connection, wherein the conical connection is arranged coaxially to the tool axis and is formed by an inner cone and an outer cone received therein.