Device for measuring elevations on the surface of a rotary body

    公开(公告)号:US12055379B2

    公开(公告)日:2024-08-06

    申请号:US17507906

    申请日:2021-10-22

    Inventor: Werner Schwab

    Abstract: A device for measuring elevations of a surface of a rotary body embodied as a cylinder, roller, sleeve, plate or flexographic printing plate for graphic industry machines includes a first motor for rotating the rotary body about an axis of rotation and a measuring device for contactless measurement which is part of or integrated into a mounter for printing plates. The measuring device allows the printing forme to be measured and analyzed to check mounting quality and to detect diameter differences. The measuring device preferably further includes a reference object, such as a wire tautened in an axially parallel direction, a second motor and, if desired, a further second motor for adjusting the measuring device and/or the reference object in a direction perpendicular to the axis of rotation. The device provides a fast way of measuring the elevations, such as flexographic print dots, with great accuracy.

    IN-SITU STRESS MEASUREMENT METHOD
    83.
    发明公开

    公开(公告)号:US20230349288A1

    公开(公告)日:2023-11-02

    申请号:US18016708

    申请日:2021-07-14

    CPC classification number: E21B49/02 G01B11/105

    Abstract: A cylindrical side-wall core is acquired from an inner circumferential surface of a well at a predetermined depth from a ground surface. First, second and third measurement cross sections spaced apart in a longitudinal direction of the core are set. In each cross section, the length of the maximum diameter of the cross section where the amount of distortion relative to the diameter of a standard circle is largest and the length of the minimum diameter where the amount of distortion relative to the diameter of the standard circle is smallest are measured. Six independent components among stress tensors for defining three-dimensional stress elements are obtained using an equation representing a difference between maximum and minimum stresses acting on the side-wall core along each cross section and another equation representing the angle between the well excavation direction and the action direction of the maximum stress on each cross section.

    METHOD FOR RELIEVING STRESSES BY ROTATION

    公开(公告)号:US20220325372A1

    公开(公告)日:2022-10-13

    申请号:US17639766

    申请日:2020-09-02

    Abstract: 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.

    Method for determining a position and orientation of an object using a profilometer

    公开(公告)号:US11421980B2

    公开(公告)日:2022-08-23

    申请号:US16196362

    申请日:2018-11-20

    Inventor: Arne Heymer

    Abstract: A method of determining position and orientation of an object using a profilometer. A measurement body has a predetermined polyhedral basic form and a defined spatial relationship with the object. The profilometer captures rectilinear coordinates of at least three measurement points lying on a profile line defined by a profilometer scan-line. Using the coordinates and measurement body geometric values, rotations of the measurement body are calculated about a measurement body z-axis, an intermediate y-axis resulting from the z-axis rotation, and about a profilometer-defined x-axis. Next, three translation displacements of the measurement body relative to the three profilometer-defined axes are calculated using the coordinates, the geometric values of the measurement body, and the above-calculated rotations. The position and an orientation of the object is determined by then applying the defined spatial relationship of the measurement body to the object.

    Method of wheel calibration
    87.
    发明授权

    公开(公告)号:US11332172B2

    公开(公告)日:2022-05-17

    申请号:US16155050

    申请日:2018-10-09

    Inventor: James A. Oswald

    Abstract: In a method of determining a radius or diameter of a train wheel, a camera mounted on a train acquires first and second images (pictures) of first and second objects spaced along a path being traveled by the train. Matches are then determined between the first and second objects appearing in the first and second acquired images and representations (pictures) of the first and second objects appearing in prerecorded images included in a track database that include corresponding first and second geographical locations. A distance L traveled by the train between the first and second geographical locations is determined and a sum C of electrical pulses generated by an encoder coupled to the train wheel during travel of the train the distance L is determined. Based on the distance L and the sum C, a diameter or radius of the wheel is determined.

    Shaft centerline alignment system for rotating equipment

    公开(公告)号:US11099010B2

    公开(公告)日:2021-08-24

    申请号:US16014427

    申请日:2018-06-21

    Abstract: An alignment system and method for aligning the shaft centerline of rotating equipment positioned on opposing roller stands are provided. The system includes a laser transmission unit on the first stand and a target unit on the second stand. The laser transmission unit includes a laser that transmits a laser beam to a target on the target unit. When the laser beam contacts the center of the target, the roller stands are aligned. The system may be automated to detect the position of the laser beam relative to the target center and to adjust, as needed, the position of one of or both the roller stands using hydraulic cylinders coupled to a roller stand platform. The system and method reduce the time, effort, and manpower required to perform the alignment.

    DE-JITTER OF POINT CLOUD DATA
    89.
    发明申请

    公开(公告)号:US20210247179A1

    公开(公告)日:2021-08-12

    申请号:US16785574

    申请日:2020-02-08

    Inventor: Dennis J. Yelton

    Abstract: Jitter is removed from point cloud data by processing different groups of data points in the point cloud data in succession to minimize the entropy of the point cloud data. Each group in the point cloud data is generated at either different points in time or from detecting different pulses of reflected laser light from a target. The data points in a selected group are repetitively shifted en masse in the coordinate system of the point cloud data and the entropy of the point cloud data is re-calculated until subsequent shifts of the data points in the selected group does not further reduce the entropy. The remaining groups are subsequently processed in a similar fashion until the entropy of the point cloud data reaches a minimum.

    Method of producing resin-impregnated fiber bundle roll body

    公开(公告)号:US11046025B2

    公开(公告)日:2021-06-29

    申请号:US16485960

    申请日:2018-02-05

    Abstract: A method of producing a resin-impregnated fiber bundle roll body includes unwinding a fiber bundle from a bobbin; winding the fiber bundle on a winding core rotating around a fixed axis through a movable winding head to prepare a product; and leading the fiber bundle taken off in the unwinding to the winding between the unwinding and winding, wherein the leading or winding includes a resin impregnating the fiber bundle, and the winding includes a fiber content calculation of a fiber content in a layer of the fiber bundle on the winding core of an intermediate product to control one according to the fiber content: a resin adhesion amount in the resin adhesion operation; a winding tension of the fiber bundle applied to the intermediate product; a removal amount of a surplus resin layer on an outer surface of the intermediate product; and a resin viscosity in the intermediate product.

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