A checking fixture for a steering knuckle. In use, a workpiece is mounted on the checking fixture, three locating points of the workpiece in the X direction respectively correspond to a supporting pin I, a supporting pin II and a supporting pin III, a locating taper hole limiting the motion of the workpiece in a YZ plane corresponds to the floating pin, and a locating point of the workpiece in the Y direction levelly fit to a supporting surface of a locating pin; after location is completed, the workpiece is tightly clamped by a jacking clamp, a press clamp I and a press clamp II. The checking fixture for the steering knuckle can measure the position accuracy of each hole of the steering knuckle workpiece, and can detect whether the relative height of the flange plane of the workpiece relative to the X-direction locating points is qualified.

A surface texture probe and a surface texture measurement apparatus with a vibrational membrane are provided. The probe includes a housing and a vibrational membrane, a stylus holder, a vertical guide assembly, a guide adjustment assembly and a stylus. An inner end of the vibrational membrane is attached to an upper end of the stylus holder. An outer end of the vibrational membrane is fixed to a vibrational membrane connection assembly fixedly connected to the housing. The vertical guide assembly is fixed inside the housing and slidably connected to the stylus holder and configured to guide the stylus holder to move in a vertical direction. The stylus is fixed to a lower end of the stylus holder. The guide adjustment assembly is mounted on the vertical guide assembly and configured to adjust a sliding friction force between the vertical guide assembly and the stylus holder.

The invention relates to a measuring device for measuring a diameter of a rope-shaped material to be measured, with the material to be measured being a fibre rope, the measuring device comprising two measuring surfaces parallel to one another, a pressing means configured for pressing the measuring surfaces onto the material to be measured located between the measuring surfaces with a predetermined measuring force during a measuring process, and a measuring unit configured for measuring a distance between the measuring surfaces, with the measuring device being configured as a portable handheld device, the measuring device comprising a guiding device which can be placed onto the material to be measured for the measuring process, with the guiding device being arranged in relation to the measuring surfaces in such a way that the material to be measured assumes a predefined position relative to the measuring surfaces during the measuring process, and with the guiding device being configured in such a way that the material to be measured can be placed onto the guiding device on both sides of the measuring surfaces.

A tool includes a first body portion having opposite first and second recesses facing toward one another about a space, wherein the opposite first and second recesses are configured to contact opposite sides of a first component disposed in the space. The tool includes a second body portion configured to rotate relative to the first body portion, wherein the second body portion is configured to contact a reference surface relative to the first component. The tool further includes an angle meter configured to measure an angle of the first component based on an angular position of the second body portion relative to the first body portion.

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.

Apparatuses, systems and methods associated with a metrology system for high-speed, non-contact coordinate measurements of parts are disclosed herein. In embodiments, the metrology system includes a metrology bridge to be coupled to a measurement assembly. The measurement assembly may include a stage moveable across multiple independent axes. The bridge may include a housing, mounting members coupled to the housing, and a plurality of sensors mounted within the housing. The mounting members may rotatably couple the housing to the measurement assembly. Further, sensor elements of the plurality of sensor devices may be aligned along a length of the housing and may be directed out of the housing.

Apparatuses, systems and methods associated with a metrology system for high-speed, non-contact coordinate measurements of parts are disclosed herein. In embodiments, the metrology system includes a metrology bridge to be coupled to a measurement assembly. The measurement assembly may include a stage moveable across multiple independent axes. The bridge may include a housing, mounting members coupled to the housing, and a plurality of sensors mounted within the housing. The mounting members may rotatably couple the housing to the measurement assembly. Further, sensor elements of the plurality of sensor devices may be aligned along a length of the housing and may be directed out of the housing.

The air bearing includes a main body part having a bearing surface opposed to a guide face, first and second flow path parts, which are provided in the main body part, for allowing compressed air supplied from outside to flow, an air supply hole, which is provided in the flow path part, for supplying compressed air to the guide face to form an air film between the bearing surface and the guide face, and a negative pressure generating part, which is provided in the second flow path part intersecting with the first flow path part, for generating a negative pressure for sucking air between the guide face and the main body part by increasing the flow velocity of the compressed air.

A coordinate measuring machine (CMM) having a belt drive unit for an elongated axis element of the CMM, the belt drive unit comprising a belt, the ends of which are clamped on the elongated axis element, a pulley unit, comprising a drive pulley and two idler pulleys, wherein the belt entangles the drive pulley and the idle pulleys in an omega-shaped manner, and wherein the pulley unit is configured to cause a relative linear movement between the axis element and the pulley unit, wherein a damping layer is disposed adjacent to the belt.

A linear guide includes an elongate guide body and a bearing cage, on the inner sides of which fluid pressure bearings are provided. The bearing cage moves along the guide body via the bearings. The bearing cage includes at least three interconnected plates. The plates each have an inner surface facing the guide body, an outer surface facing away from the guide body and side surfaces between the inner and the outer surface. Each plate is connected to a first other plate in a first end region and connected to a second other plate in an opposite second end region. For each of the plates: the first other plate, with its inner surface, abuts against a side surface of the considered plate, while the considered plate, with its inner surface, abuts against a side surface of the second other plate in the second end region of the considered plate.