Abstract: A friction taper clamping system includes a rotationally symmetrical base body, on which a friction taper attachment with a workpiece holder forming a friction taper is arranged, and a centering element with a centering tip. The centering element is displaceably arranged parallel to the axis of symmetry of the rotationally symmetrical base body in an opening that traverses the base body as well as the friction taper attachment, which opening transitions into the workpiece holder. The centering element can be moved between an extended position, in which the centering tip protrudes from the workpiece holder, and a retracted position, in which the centering tip is located within the workpiece holder. The base body includes at least one clamping device which is configured and set up, at least in the extended position, to clamp the centering element, so that a rotation of the base body is transmitted to the centering element.

Abstract: A changer (100) for tools (112, 122, 132, 142, 152, 162) or workpieces of a machine tool includes a plurality of holders (111, 121, 131, 141) for tools (112, 122, 132, 142, 152, 162) or workpieces, which are arranged rotatably about a common axis of rotation (D), in which the relative position of the holders (111, 121, 131, 141) for tools (112, 122, 132, 142, 152, 162) or workpieces to one another is variable, so that the distance between a first holder (111, 121, 131, 141) and the holders (111, 121, 131, 141) for tools (112, 122, 132, 142, 152, 162) or workpieces neighboring this first holder (121, 131, 141, 111) for tools (112, 122, 132, 142, 152, 162) or workpieces is different at different positions of the first holder (111, 121, 131, 141) for tools (112, 122, 132, 142, 152, 162) or workpieces.

Abstract: A grinding machine includes a machine bed on which a workpiece spindle with a workpiece holder and a tool spindle with a tool holder are arranged in such a way that a workpiece held in the workpiece spindle can be moved or rotated along several axes relative to a tool held in the tool holder. A cabin is arranged on the machine bed which defines a working space in which the tool spindle and the workpiece spindle are arranged for machining workpieces. The grinding machine has a robot for changing the workpiece, which is arranged outside the work area in an automation cabin. The grinding machine has a light barrier enclosing the X-axis with a transmitter and at least one receiver for determining the unclamping length of the workpiece in the workpiece spindle when the workpiece spindle is moved back from the automation cabin after the workpiece change.

Abstract: A grinding machine includes a machine bed on which a workpiece spindle with a workpiece holder and a tool spindle with a tool holder are arranged. A workpiece held in the workpiece spindle, relative to a tool held in the tool holder, is displaceable along an X-axis running in a first direction parallel to the surface of the machine bed, is displaceable along a Y-axis, running in a second direction parallel to the surface of the machine bed, is displaceable along a Z-axis running perpendicular to the surface of the machine bed, is rotatable about an A-axis running parallel to the surface of the machine bed, and is rotatable about a C-axis running perpendicular to the surface of the machine bed. The tool spindle is completely kinematically separated from the workpiece spindle. Movements along the X-axis, about the A-axis and about the C-axis being carried out by the workpiece spindle.

Abstract: A machine tool comprising a tool spindle and a workpiece clamping mechanism moveable relative to one another on a linear X-axis in a controlled manner, wherein the tool spindle can be moved in a controlled manner in relation to a machine frame on Y and Z-axes which are perpendicular to the X-axis and to each other and can be pivoted in a controlled manner around a C-axis parallel to the Z-axis, and wherein a workpiece gripper, which can be moved in common with the tool spindle, is assigned to the tool spindle, and that the tool spindle can travel with the workpiece gripper to a magazine wheel on the Y, Z and C-axes and can be aligned with recesses on the magazine wheel, movement on the X, Y, Z and C-axes effecting transfer of a workpiece between the workpiece gripper and the workpiece clamping mechanism.

Abstract: Machine tool comprising a machine frame (10, 20), a tool spindle (30) that can be driven so as to rotate, a workpiece clamping mechanism (12) and a magazine, wherein the tool spindle (30) and the workpiece clamping mechanism (12) can be moved relative to one another on a linear X-axis in a controlled manner, and wherein the tool spindle (30) can be moved in a controlled manner in relation to machine frame (10, 20) in Y- and Z-axes which are perpendicular to the X-axis and to each other and can be pivoted in a controlled manner around a C-axis parallel to the Z-axis, wherein the magazine has at least one magazine wheel (42, 66) which can be positioned rotating around a rotational axis parallel to the Z-axis, that the magazine wheel (42, 66) has recesses (58, 76) for tools (60) and/or workpieces (62, 64, 78) arranged distributed in its circumferential direction, wherein a workpiece gripper (34), which can be moved in common with the tool spindle (30), is assigned to the tool spindle (30), and wherein the tool s