The present invention provides a measurement device for grinding wheel. One or more thickness measurement device is disposed slidably on a platform. A spinning device is disposed on the platform. A grinding wheel is fixed on the spinning device. The spinning shaft spins the grinding wheel. The one or more thickness measurement device measures the flatness condition of the grinding wheel. Furthermore, according to the present invention, a diameter measurement device is disposed inside the platform and measures the roundness of the outer periphery of the grinding wheel. Since the structure can be disassembled easily, the whole measurement device for grinding wheel can be carried conveniently. In addition, measurements can be performed by users on the site where the grinding wheel is located for real-timely understanding the real size and wear condition of grinding wheel.

A bundle includes five or more circular elongated elements. Each circular elongated element includes: a first end; a cylindrical portion defining an outer diameter of the circular elongated element and a rotation axis of the circular elongated element; and a second end. The first end and/or the second end of each circular elongated element fulfills at least one of the following equations: ARO≤A or ARO/OD≤B, where value A is 1.3 mm, ARO is an axial run out in mm of the first end and/or the second end of the respective circular elongated element, value B in mm/mm is 0.1, and OD is the outer diameter in mm of the respective circular elongated element.

A bubble measurement system includes a bubble detector including a vessel having a flow path configured to receive a flow of fluid includes air bubbles from a bubble generator. The bubble measurement system includes an imaging system having an imaging device for imaging the fluid and air bubbles in the flow path of the vessel of the bubble detector. The imaging system has an imaging controller coupled to the imaging device and receiving images from the imaging device. The imaging controller processes the images to measure bubble size of each air bubble passing through the bubble detector.

A bubble measurement system includes a bubble detector including a vessel having a flow path configured to receive a flow of fluid includes air bubbles from a bubble generator. The bubble measurement system includes an imaging system having an imaging device for imaging the fluid and air bubbles in the flow path of the vessel of the bubble detector. The imaging system has an imaging controller coupled to the imaging device and receiving images from the imaging device. The imaging controller processes the images to measure bubble size of each air bubble passing through the bubble detector.

A method for relieving residual stresses in a part includes increasing the rotation speed, which includes measuring, at a first given instant, values representative of the rotation speed and the radial enlargement; measuring, at a second given instant after the first instant, values representative of the rotation speed and the radial enlargement; determining a leading coefficient of a first affine function from the preceding values; determining a target radial enlargement value as a function of a value representative of the rotation speed, in the form of a second affine function, the origin of which is the value of a desired final residual enlargement and the leading coefficient of which is the leading coefficient of the first affine function; stopping the increase in rotation speed of the part from the moment that the actual enlargement of the rotating part corresponds to the target relative radial enlargement value that has been determined.

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.

The present disclosure relates to a THz measuring method and a THz measuring device for measuring corrugated pipes with different diameters, wave widths and valley widths.

The present disclosure relates to a THz measuring method and a THz measuring device for measuring corrugated pipes with different diameters, wave widths and valley widths.

A method for determining the position of at least one edge of an object, in particular a strand, comprises illuminating the object using light from at least one coherent light source, wherein diffraction borders are generated on both geometric boundaries of the shadow caused by the object. The method also includes recording the spatial intensity profile of at least one diffraction border using at least one single or multi line optical sensor, differentiating the at least one recorded intensity profile with respect to location and plotting it using a squared location axis, and comparing the at least one recorded intensity profile, differentiated with respect to location and plotted using a squared location axis, to at least one periodic reference intensity profile. The position of at least one edge of the object is determined on the basis of the completed comparison.

The present invention relates to a device and a method for establishing a geometry of a container for packaging a flowable medium, wherein a radiation apparatus for generating and emitting at least electromagnetic radiation from a radiation source of the radiation apparatus to a radiation sink of the radiation apparatus along a detection region is activated in order subsequently to rotate and/or swivel the container about an axis of rotation by means of a movement apparatus, wherein, at least from time to time during a rotational movement of the container, at least one container region is moved through at least one portion of the detection region. Then, a detection apparatus is used to detect a passage time of the container region through the detection region, which passage time is evaluated by means of an evaluation apparatus for establishing an external geometry of the container.