The invention relates to a compensation device for the flat-compensated clamping of a workpiece, in particular a toothed workpiece or a workpiece to be toothed, carried out via a clamping device defining a clamping axis, said workpiece having an axis of rotation and abutting a contact surface of the compensation device with a flat side, wherein the workpiece axis of rotation is coaxially centered to the clamping axis when the clamping device is actuated, and any deviations arising therefrom of the abutting flat side from an orthogonality to the workpiece axis of rotation are compensated by a deflection movement carried out at the compensation device, wherein the contact surface has at least three contact areas spaced apart from one another and the deflection movement comprises an axial movement of the contact areas.

The invention relates to a compensation device for the flat-compensated clamping of a workpiece, in particular a toothed workpiece or a workpiece to be toothed, carried out via a clamping device defining a clamping axis, said workpiece having an axis of rotation and abutting a contact surface of the compensation device with a flat side, wherein the workpiece axis of rotation is coaxially centered to the clamping axis when the clamping device is actuated, and any deviations arising therefrom of the abutting flat side from an orthogonality to the workpiece axis of rotation are compensated by a deflection movement carried out at the compensation device, wherein the contact surface has at least three contact areas spaced apart from one another and the deflection movement comprises an axial movement of the contact areas.

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.

A workholding apparatus (10) wherein a draw bar (22) effects chucking and de-chucking of a workpiece (W) and wherein un-seating of the workholding apparatus is effected by piston-like mechanisms (30) located in a machine spindle (2).

A workholding apparatus (10) wherein a draw bar (22) effects chucking and de-chucking of a workpiece (W) and wherein un-seating of the workholding apparatus is effected by piston-like mechanisms (30) located in a machine spindle (2).

An internal clamping arrangement having a base with a clamping mandrel that extends in a main extent direction and has a guide face and at least two clamping sleeves. The clamping sleeves are displaceable in the main extent direction and are pushed onto the guide face of the clamping mandrel from the direction of a distal end of the clamping mandrel. The clamping sleeves have a clamping portion which can be expanded by displacement, and the outside of which has a clamping face for a respective one of the workpieces. The internal clamping arrangement has at least three piston chambers which act between the base and the at least two clamping sleeves and between the clamping sleeves.

The present disclosure includes a part hold-down assembly for retaining an oversized part. The part hold-down assembly is aligned along a central force axis and applies a downward force onto the part. The part-hold down assembly includes a top plate, a bottom plate, and a compression assembly extending between the top and bottom plates. The compression assembly includes two, parallel biasing assemblies that extend along compression axes that are parallel to but offset from the central force axis. Each biasing assembly including an upper collar, a lower collar and a resilient biasing member, in one embodiment in the form of a coil spring, retained between the upper and lower collar. The parallel biasing assemblies are positioned on opposite sides from each other about the central force axis, and may be spaced away from the central force axis an equal distance.

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.

The present disclosure includes a part hold-down assembly for retaining an oversized part. The part hold-down assembly is aligned along a central force axis and applies a downward force onto the part. The part-hold down assembly includes a top plate, a bottom plate, and a compression assembly extending between the top and bottom plates. The compression assembly includes two, parallel biasing assemblies that extend along compression axes that are parallel to but offset from the central force axis. Each biasing assembly including an upper collar, a lower collar and a resilient biasing member, in one embodiment in the form of a coil spring, retained between the upper and lower collar. The parallel biasing assemblies are positioned on opposite sides from each other about the central force axis, and may be spaced away from the central force axis an equal distance.

The present disclosure includes a part hold-down assembly for retaining an oversized part. The part hold-down assembly is aligned along a central force axis and applies a downward force onto the part. The part-hold down assembly includes a top plate, a bottom plate, and a compression assembly extending between the top and bottom plates. The compression assembly includes two, parallel biasing assemblies that extend along compression axes that are parallel to but offset from the central force axis. Each biasing assembly including an upper collar, a lower collar and a resilient biasing member, in one embodiment in the form of a coil spring, retained between the upper and lower collar. The parallel biasing assemblies are positioned on opposite sides from each other about the central force axis, and may be spaced away from the central force axis an equal distance.