Method and Apparatus for Testing Workpieces

    公开(公告)号:US20210180933A1

    公开(公告)日:2021-06-17

    申请号:US17119854

    申请日:2020-12-11

    IPC分类号: G01B5/016 G01B11/00

    摘要: A method is described for measuring workpieces, each having structural features that form test features for measurement. The method determines an unstable one and a stable one of the test features, based on expected violation or satisfaction, respectively, of a statistical control rule. The method measures workpieces such that the unstable test feature is measured more frequently than the stable test feature. The method ascertains whether the unstable test feature remains unstable and whether the stable test feature remains stable. The method measures additional workpieces if the unstable test feature remained unstable and the stable test feature remaining stable. The determining is repeated if the unstable test feature is no longer unstable, the stable test feature is no longer stable, or any other measurement feature changes, such as if a new batch of workpieces is to be measured, environmental conditions change, or measurement has proceeded longer than a predefined threshold.

    Optical measuring system and method

    公开(公告)号:US11003873B2

    公开(公告)日:2021-05-11

    申请号:US16376021

    申请日:2019-04-05

    IPC分类号: G06K7/10 G06F16/907 G06K7/14

    摘要: An optical measuring system includes a calibration apparatus having at least one optical marker and a code. The optical measuring system includes a memory unit that stores a metadata record with calibration parameters that have physical state and change variables that are specific to the calibration apparatus. The calibration apparatus is configured to encrypt a link to the metadata record stored in the memory unit. The optical measuring system includes an optical sensor configured to capture image data containing the at least one optical marker and the code. The optical measuring system includes a control unit configured to evaluate the image data captured by the optical sensor, decrypt the code captured by the optical sensor, access the memory unit via the link, read the metadata record stored therein, and include the read calibration parameters and the at least one optical marker in the evaluation of the image data.

    Method and arrangement for detector correction for generating object radiographs

    公开(公告)号:US10996355B2

    公开(公告)日:2021-05-04

    申请号:US16258300

    申请日:2019-01-25

    发明人: Wolfgang Kimmig

    摘要: A method for correcting a detector configured to generate object radiographs and an arrangement to implement the method is provided. The method includes the steps of (a) providing the detector having setting values for a gain and offset correction, (b) capturing a plurality of object radiographs of a test object by the detector and generating a reconstructed three-dimensional representation of the test object based on of the object radiographs, (c) determining at least one quality value of the reconstructed three-dimensional representation, repeating the steps (b) and (c) at least once, wherein before the repetition, a parameter set is generated and a measurement sequence is implemented on the basis thereof, at least one setting value for a gain and offset correction of the detector being determined anew based on the measurement sequence; and (e) determining a preferred gain and offset correction based on overall determined quality values.

    Method for creating a measurement protocol and computer for performing the same

    公开(公告)号:US10830583B2

    公开(公告)日:2020-11-10

    申请号:US15418468

    申请日:2017-01-27

    摘要: A method for creating a measurement protocol in a computer, such as the measurement computer of a coordinate-measuring machine or a computer remote therefrom, includes: providing data necessary for creating a measurement protocol generated on the basis of a measurement sequence by the coordinate-measuring machine; providing specification data specifying predefined conditions under which a measurement sequence should be performed and/or specifying predefined conditions under which examination features should be evaluated; checking the data necessary for creating a measurement protocol as to whether the predefined conditions under which the entire measurement sequence should be performed were met and/or as to whether the predefined conditions under which individual examination features to be examined should be evaluated were met, and; creating a measurement protocol in the form of an electronic document, in which compliance and/or non-compliance with the conditions in accordance with the specification data is documented in the measurement protocol.

    Coordinate measuring apparatus with air bearing monitoring and adjusting capability

    公开(公告)号:US10808758B2

    公开(公告)日:2020-10-20

    申请号:US15797508

    申请日:2017-10-30

    发明人: Thomas Engel

    IPC分类号: F16C32/06 G01B5/00 G01B5/008

    摘要: A coordinate measuring apparatus is provided having at least one measuring system and at least one support structure on which the measuring system is disposed, wherein the measuring system is displaceably mounted in the support structure and/or the support structure is displaceably mounted, and wherein the coordinate measuring apparatus includes an air bearing arrangement for mounting two components to be movable relative to one another. The air bearing arrangement includes at least one air bearing which provides a compressed air cushion between the components, wherein the air bearing has at least one compressed air supply line by way of which the compressed air can be provided, wherein a flow rate meter by way of which the flow rate of compressed air to the air bearing can be detected is provided in the compressed air supply line.

    Adapter element for assembling a rotational apparatus in the measurement space of a coordinate measuring machine

    公开(公告)号:US10801825B2

    公开(公告)日:2020-10-13

    申请号:US15833397

    申请日:2017-12-06

    IPC分类号: G01B5/008 G01B5/00 G01B11/00

    摘要: An arrangement includes a rotary apparatus, a device, and an adapter element configured to assemble the rotary apparatus in a measurement space of a coordinate measuring machine. The rotary apparatus has an axis of rotation (D). The adapter element includes a first fastening portion configured to fasten the adapter element in the measurement space, a second fastening portion, and a coupling portion. The rotary apparatus is fastened to the adapter element at the second fastening portion. The device is coupled to the adapter element at the coupling portion. The coupling portion is arranged adjacently to the second fastening portion. The device is positioned on the adapter element next to the rotary apparatus.

    Air bearing with variable air delivery

    公开(公告)号:US10683894B2

    公开(公告)日:2020-06-16

    申请号:US15935052

    申请日:2018-03-25

    IPC分类号: F16C32/06

    摘要: An air bearing for movably bearing at least two elements includes a bearing main body with a first air outflow channel and a second air outflow channel. The first air outflow channel is supplied with air via at least one first air delivery device. The second air outflow channel is supplied with air via at least one second air delivery device. A sensor detects at least one of a bearing stroke, a bearing pressure, and a bearing throughflow, and a controller adjusts the supply of the air to at least one of the first air outflow channel and the second air outflow channel in accordance with the at least one of the bearing stroke, the bearing pressure, and the bearing throughflow.