A method for electrically activating a measurement stand with a movement of at least one measuring probe (26) from a starting position (31) into a measuring position (32) and also a measurement stand for supporting a measuring probe, in particular for measuring the thickness of thin layers, in which a motor (34) is activated by a control arrangement (25), which moves a ram (23) up and down via a drive arrangement (35), wherein a retainer (24) is provided on the ram (23), to which retainer the measuring probe (26) can be fastened, in which a freewheel is activated between the drive arrangement (35) and the ram (33) as soon as the measuring probe (26) or retainer (23) is set down in the measuring position (32) on an item to be measured (14) and the movement of the drive arrangement (35) is decoupled from the vertical movement of the ram (23), wherein a movement speed of the at least one measuring probe (14) from the starting position (31) into the measuring position (32) is reduced by mechanical damping or electrical damping before the measuring position (32) is reached.

There is provided a three-dimensional coordinate measurement apparatus capable of reducing shaking of a Y carriage and improving measurement accuracy. A groove is formed along a Y-axis direction in a right side part of a surface plate made of stone, and a Y guide is formed between the groove and a right side surface of the surface plate to support a Y carriage in a portal shape in a movable manner in the Y-axis direction. A support section is provided at a lower end of a right Y carriage on the right side of the Y carriage, and the support section is supported by the surface plate through air pads which are disposed by two air pads back and forth on the corresponding one of a top surface, a right side surface, and a bottom surface, of the surface plate, and a right side surface of the groove.

There is described a device for measuring deformations (10) on surfaces endowed with a frame (11) associated to fastening means (20) of the device (10) on the surfaces, the device (10) further comprising, at least a pair of guides (31, 32) associated longitudinally to an inner portion (12) of the frame (11) and spaced apart parallel to each other, and a sliding support (40) perpendicularly associated to the guides (31, 32); the sliding support (40) comprising a transversal groove (41) on which there is disposed a mobile base (42) that receives a measuring element (50).

A distance measuring device includes a measuring member holding a length measuring instrument and at least one rail member (base member) on which the measuring member is movably disposed. When a straight line parallel to a direction in which the measuring member disposed on the base member moves is defined as a reference line, an angle formed by a straight line parallel to an axial length direction of a reaction tube and the reference line, which are on an identical plane, is constant for the plurality of reaction tubes disposed side by side along the reference line. A measurement direction of the length measuring instrument is parallel to the axial length direction of the reaction tube in a state where the measuring member is disposed on the base member. The measuring member is disposed on the base member to be able to sequentially move.

The motion system for a CMM includes a measuring axis with an air bearing, a control unit for determining a position of the measuring probe in a reference frame and outputting the position as a measuring result. The first air bearing includes a guideway, slide having a slide surface and a gas outlet within the slide surface. The gas outlet is for providing a gas cushion in a gap between the slide surface and the guideway. A cover is arranged around the slide so a gap is provided between the cover and the guideway and a hollow space is provided between the cover and the slide. A wiper is arranged on the cover. A nozzle unit is supplied by a second gas supply line and for providing a high-pressure gas flow directed onto the guideway.

A calibrated three-dimensional optical measuring apparatus for three-dimensional measurement of geometric parameters of a rope has a frame defining and arranged around a rope receiving cavity. Image acquisition devices acquiring digital images of regions of an outer surface of the rope are fixed to the frame and arranged around the rope when the calibrated three-dimensional optical measuring apparatus receives the rope in the rope receiving cavity. An electronic digital image processing device processes a multiplicity of digital images and obtains a three-dimensional photogrammetric reconstruction of points of the digital images of the rope. Having defined a circumferential direction running around a main extension axis of the rope and lying on a plane incident or perpendicular to the main extension axis of the rope, the image acquisition devices are arranged on the frame circumferentially spaced apart from one another along the circumferential direction. A lighting device is arranged along the circumferential direction between a pair of adjacent image acquisition devices.

A retaining system for a rotation angle sensor assembly is disclosed. The retaining system includes a first retaining element for coupling to a first of two machine parts and comprising a rotation angle sensor of the rotation angle sensor assembly. The retaining system also includes a second retaining element for coupling to a second of the two machine parts and comprising at least one position encoder element of the rotation angle sensor assembly corresponding to the rotation angle sensor. The rotation angle sensor is configured to detect a rotation of the position encoder element relative to the rotation angle sensor. The first retaining element is configured to guide the rotation angle sensor via a guide positioned between the first retaining element and the second retaining element so as to be rotatable relative to the position encoder element on the second retaining element.

A method for the mechanical correction of geometric motion errors of a positioning machine having at least two machine frame components and at least one axis movement assembly for the relative movement of the machine frame components, the at least one axis movement assembly comprising a plurality of axis guide components, each axis guide component and each machine frame component having a mounting surface. A mounting surface correction profile is determined for the considered axis, whereas the mounting surface correction profile describes the correction amounts in function of the position for the mechanical correction of the considered axis. The determined mounting surface correction profile is imparted to the mounting surface of the axis guide component or to the mounting surface of the machine frame component of the considered axis by machining.

A positioning system for positioning an object includes a stacked stage system movable on a reference surface. The stacked stage system includes a driving system for driving the stacked stage system; a first stage driven along a driving plane parallel to the plane of the reference surface; and a main stage for supporting the object, the main stage arranged on the driven first stage for moving the main stage along the driving plane. The main stage includes a rotary drive system for rotating the main stage with respect to the first stage around an axis parallel to an out-of-plane direction perpendicular to the driving plane. The main stage is movable with respect to the first stage in the out-of-plane direction and further includes a support bearing to movably support the main stage on the reference surface in said out-of-plane direction.

A device (1) at least for measuring the geometry of an axle (2) of a motor vehicle, with at least two mounting devices (4) for fastening the opposing ends (5) of the axle (2), and at least one detection means (9) for detection of at least one geometric parameter of the axle (2), wherein the mounting devices (4) are displaceably mounted in at least two spatial directions (X, Y), wherein each mounting device (4) features at least one fastening region (12) for fastening of one end (5) of the axle (2). A device (1) at least for measuring the geometry of an axle (2) of a motor vehicle which features a low-level of complexity and is of compact design is obtained in that at least the fastening region (12) of the mounting device (4) is pivot-mounted at least partially by means of at least two mutually movable, arched bearing surfaces (13).