A measuring device is provided which, in order to measure measured variables of an object being measured, can be placed on a surface of the object being measured. The surface supports the measuring device. The measuring device comprises at least three projecting contact surfaces, the center points of which are distributed substantially uniformly along a circle. The projecting contact surfaces, when the measuring device is placed on the surface of an object being measured, lie against the surface and are supported by the surface. A first of the contact surfaces comprises a temperature sensor for measuring the surface temperature of the object being measured, while a second and a third of the contact surfaces are provided to measure respective other measured variables.

Various embodiments include a structure for positioning a tool on an elongated recess of a workpiece, wherein the elongated recess extends along a first longitudinal axis and has end surfaces on two end faces. The structure may include a plate having a cutout extending along an axis; a centering device; and a clamping device fixedly connected to the plate and the centering device. The cutout, when the second longitudinal axis is aligned parallel to the first longitudinal axis, enframes the elongated recess. The centering device includes a centering jaw movable within the cutout along the second longitudinal axis and also movable into and out of the elongated recess. The clamping device, on the side of the plate facing the elongated recess, includes clamping jaws movable along the second longitudinal axis to come into mechanical contact with one of the end surfaces of the end faces of the elongated recess.

Various embodiments include a structure for positioning a tool on an elongated recess of a workpiece, wherein the elongated recess extends along a first longitudinal axis and has end surfaces on two end faces. The structure may include a plate having a cutout extending along an axis; a centering device; and a clamping device fixedly connected to the plate and the centering device. The cutout, when the second longitudinal axis is aligned parallel to the first longitudinal axis, enframes the elongated recess. The centering device includes a centering jaw movable within the cutout along the second longitudinal axis and also movable into and out of the elongated recess. The clamping device, on the side of the plate facing the elongated recess, includes clamping jaws movable along the second longitudinal axis to come into mechanical contact with one of the end surfaces of the end faces of the elongated recess.

According to one implementation, a drilling machine includes a drilling structure and a travelling machine. The drilling structure drills an object to be drilled composed of at least one structural object on a platy part. The travelling machine positions the drilling structure in a travelling direction of the travelling machine by travelling in a longitudinal direction of the at least one structural object using the at least one structural object as a guide.

According to one implementation, a drilling machine includes a drilling structure and a travelling machine. The drilling structure drills an object to be drilled composed of at least one structural object on a platy part. The travelling machine positions the drilling structure in a travelling direction of the travelling machine by travelling in a longitudinal direction of the at least one structural object using the at least one structural object as a guide.

A sealing surface processing machine cuts an attachment surface of a seal member in a valve main body. The machine includes a pedestal attached to the valve main body; a main body movably supported on the pedestal; a tool holder configured to hold a tool for processing the attachment surface; a rotating part configured to rotate the tool holder around an axis parallel to a movement direction of a valve body; a first moving part configured to move the tool holder along a first direction along which the valve body moves; a second moving part configured to move the tool holder along a second direction intersecting with the movement direction of the valve body; a first adjustment device configured to adjust a position of the main body in the first direction; and a second adjustment device configured to adjust a position of the main body in the second direction.

A tool holder for a machine includes a frame and an actuator that can be moved from a retracted state to an extended state and back. The frame includes a hook shaped recess having an opening and a cut out arranged at a distance from the hook shaped recess so that a front bracket pin of a tool can releasably connect to the hook shaped recess by entering the opening and a rear bracket pin of the tool can releasably connect to the cut out. The actuator is fixedly connected to the frame with one end. The actuator includes a locking element that is designed to change the shape of the cut out in the extended state of the actuator. The actuator includes a securing assembly designed to reduce the size of the opening of the hook shaped recess in the retracted state of the actuator. The rear bracket pin can enter the cut out in the retracted state of the actuator and the front bracket pin can enter the hook shaped recess in the extended state of the actuator.

A machining apparatus which is designed for machining the outer circumference of a rotor, in particular of a gas-turbine or steam-turbine rotor, includes a plurality of separate carriages, at least one tensioning strap, wherein the carriages can be connected to one another to create an annular arrangement, and also having a tensioning device, in particular in the form of a pressure ratchet, which is designed for tensioning the tensioning strap. The carriages are each provided with preferably floating-mounted wheels, which are oriented in a direction of travel, and wherein at least one carriage has a tool carrier for accommodating a machining tool and driving it by motor. A method for machining the outer circumference of a rotor by using such a machining apparatus is provided.

A machining apparatus which is designed for machining the outer circumference of a rotor, in particular of a gas-turbine or steam-turbine rotor, includes a plurality of separate carriages, at least one tensioning strap, wherein the carriages can be connected to one another to create an annular arrangement, and also having a tensioning device, in particular in the form of a pressure ratchet, which is designed for tensioning the tensioning strap. The carriages are each provided with preferably floating-mounted wheels, which are oriented in a direction of travel, and wherein at least one carriage has a tool carrier for accommodating a machining tool and driving it by motor. A method for machining the outer circumference of a rotor by using such a machining apparatus is provided.

A milling device is provided, having a milling tool that rotates about a tool rotation axis, wherein the milling device has a slide, and in that the milling tool is held on a pivot axis that extends transversely, in particular perpendicular, to the tool rotation axis and through the slide, wherein the slide is designed and the position of the milling tool is selected such that, during milling, a traversing movement is effected by manually moving the slide and advance is effected by pivoting the milling tool about the pivot axis. Also provided is a method for milling within a slot of a component, in particular within a blade root receiving slot of a turbomachine, using a milling device.