Abstract: A prosthetic heart valve includes a support structure and a valve assembly disposed within the support structure, the valve assembly including a plurality of leaflets. Each leaflet includes a sewing edge and a free edge. The leaflet is formed from a sheet of leaflet material which is processed so that the resulting leaflet has a non-uniform thickness. Various methods may be used to form the leaflet with a non-uniform thickness.

Abstract: A measurement arm receptacle device of a measurement system for releasably arranging a measurement arm. The measurement arm receptacle device comprises a holding device that cooperates with a counter holding device of the measurement arm. The holding and counter holding devices may each comprise at least one retaining magnet. The measurement arm receptacle device comprises an electric contact part movable between a rest position and a working position. In the rest position the contact part is electrically connected with an electric reference potential and in the working position the electric contact part is electrically connected with a measurement arm contact of the measurement arm. Thus it can be unambiguously determined via the contact part, if a measurement arm is arranged at the measurement arm receptacle device and additionally a data carrier of the measurement arm electrically connected with the measurement arm contact can be read out.

Abstract: A system and a method for uniformed surface measurement are provided, in which a sensor is provided to perform measurements on a carrier in a polishing machine, and a measuring trajectory of the sensor on the carrier is adjusted by controlling the pivoting of a sensor carrier carrying the sensor and the rotation of a rotating platform in the polishing machine in order to achieve uniformed surface measurements of the carrier and real-time constructions of the surface topography. This allows the polishing state of the carrier to be monitored in real time, thereby improving the efficiency of the polishing process. A sensing apparatus for uniformed surface measurement is also provided.

Abstract: A shape measurement device includes a stylus configured to contact an object to be measured; a measurement arm that supports the stylus to allow the stylus to contact the object to be measured; a measurement arm part that supports the measurement arm; and a measurement arm support that supports the measurement arm part to allow the stylus to move along an outer shape of the object to be measured. The measurement arm support includes a support body provided with a movement rail formed on a top surface thereof. A body coupling block is coupled to the movement rail to move along the movement rail and is detachably coupled to the measurement arm part. The measurement arm portion includes a body provided with a block accommodation groove to accommodate the body coupling block and a position-fixing member coupled to a lower surface of the body defining the block accommodation groove.

Abstract: A surface finish stylus and associated methods for a multi-directional scanning probe the stylus having an elongate stylus shaft having a longitudinal axis and one or more contact elements protruding from the elongate shaft for contacting a surface to be measured. The one or more contact elements are configured to enable measurement of surface finish during motion of the stylus shaft relative to a surface along a measurement direction that is non-parallel to the longitudinal axis. The multi-directional scanning probe may be carried by a coordinate measuring machine or machine tool.

Abstract: Described is compressing a digital representation of an object, wherein the object representation comprises image information items for the object that each specify a value of a measurand for the object at a defined position of the object. Compressing includes determining the object representation, determining a distance field from the image information items of the object representation that comprises a plurality of data points in a grid, the distance field assigns at least one distance value to each of the data points that in each case indicate the shortest distance of the data point from a closest material boundary of the object, determining a near region around a material boundary of the object, determining a sub-set of data points of the distance field which lie outside the near region, deleting the sub-set of data points, and saving the distance field in the form of a compressed object representation.

Abstract: The present disclosure uses a surface property measuring device that includes an arm swingably supported so as to displace a stylus vertically, and an arm lifter that holds the stylus at a predetermined height by rotating the arm. After arranging the arm lifter in a state where the arm can be held at a lower limit height that is only a predetermined drop amount below a predetermined measurement height, the arm is arranged at the measurement height and the stylus contacts a measured object, and in this state surface properties of the measured object are measured.

Abstract: A displacement measuring apparatus acquires, based on a principle of triangulation and corresponding to an incident position of the reflected light in the light receiving section, a profile that is an aggregate of heights of reflection positions of the planar measurement light in the measurement object. The displacement measuring apparatus drives the light guiding optical system such that a plurality of reflection positions arranged in a line along a first direction on a surface of the measurement object are minutely displaced in a second direction different from the first direction by reflecting the planar measurement light on the surface of the measurement object. The displacement measuring apparatus acquires one profile by statistically processing a plurality of sub-profiles acquired by minutely displacing the light guiding optical system.

Abstract: The disclosure relates to an outer dimension measurement apparatus for tubulars. The apparatus includes a first wheel and a second wheel, which may be applied to different sections of a tubular. The ratio between the outer dimensions of the different sections may be estimated based on the relationship between the rates of rotations of the first and second wheels when the tubular is rotated. The apparatus may include a tubular rotation sensor that, with either the first wheel or the second wheel, may be used to determine the outer dimension of the tubular at the point along the tubular's length when the respective wheel is applied. The methods include estimating a ratio between outer dimensions of sections of a tubular and estimating the outer dimension of the tubular at a specific point along its length using embodiments of the apparatus.

Abstract: Disclosed is a system for shape error in-situ measurement of large-scale torus, which comprises an attitude adjusting part, a rotating part and a measuring part.

Abstract: A method of detecting a potato virus in a crop image depicting at least one potato plant includes storing the crop image in a memory, identifying a first region of the crop image depicting potato plant leaves, identifying a plurality of edges within the first region, determining whether an image segment of the crop image within the first region satisfies one or more leaf creasing criteria symptomatic of leaf creasing caused by the virus based on the edges that are located within the image segment, determining whether the image segment satisfies one or more color criteria symptomatic of discoloration caused by the virus, and determining whether the segment displays symptoms of potato virus based on whether the image segment satisfies one or more of the leaf creasing criteria and the color criteria. A system and computer readable medium are also disclosed.

Abstract: A system for locating and tracking an object is provided. The system includes a measuring device configured to determine a property of a paving-related material, a locating device configured to determine a location of the measuring device, a tracking system configured to store tracking information associated with the measuring device and one or more properties determined by the measuring device, and a communications system configured to transfer, to a remote device, the location of the measuring device and the tracking information associated with the measuring device.

Abstract: The present invention regards a unit for detecting geometric characteristics of a component (T, W) of a tired wheel (TW) of a vehicle (V), including a housing box or casing, at least one lighting means, at least one sensor means, at least one screen component or protection glass for the lighting means and/or for the sensor means and at least one means for delivering a cleaning fluid above the protection screen component.

Abstract: A road surface assessment apparatus for a vehicle includes an illumination device, a detector, and an assessment unit. The illumination device is configured to emit pattern light to a road surface on which the vehicle runs, or a surrounding of the vehicle. The detector is configured to detect the emitted pattern light. The assessment unit is configured to assess a condition of the road surface, on the basis of the detected pattern light. The illumination device intermittently emits the pattern light for a short time in such a manner that a period of time for which the pattern light is not emitted is longer than a period of time for which the pattern light is emitted.

Abstract: A measuring instrument is configured to detect a displacement of a contact point provided to be movable and to digitally display a measured value on a display unit provided on an outer surface of a case. The measuring instrument includes an input unit. The input unit is provided on the outer surface of the case and is configured to allow a user to input to the input unit through a manual operation. The input unit includes a sensor which is configured to detect an amount of operation and a speed of operation. The amount of operation is converted into a conversion value in view of the speed of operation and then is displayed on the display unit.

Abstract: A system for locating and tracking an object is provided. The system includes a measuring device configured to determine a property of a paving-related material, a locating device configured to determine a location of the measuring device, a tracking system configured to store tracking information associated with the measuring device and one or more properties determined by the measuring device, and a communications system configured to transfer, to a remote device, the location of the measuring device and the tracking information associated with the measuring device.

Abstract: A gauge for checking the tolerance of a manufactured tube having at least one bend therein is digitally manufactured layer-by-layer using an additive manufacturing machine. Multiple features of the gauge are integrated with each other within a common reference coordinate system to precisely locate the features relative to each other.

Abstract: A device for measuring a workpiece surface along an X-axis, the measured surface residing generally within an X-Y plane. The measuring device has a ring body supported on a pivot body for pivoting in a limited angular range about a pivot axis spaced from and substantially parallel to the X-axis. The measuring device also has a base fixed in the direction of the Y-axis and a ring body supported on the base for limited movement relative to the base in a direction substantially parallel to the Y-axis. A measurement wheel is rotatable about an axis of rotation defined by the ring body and rolls along the workpiece surface when the workpiece and the measurement device move relative to one another in the direction of the X-axis.

Abstract: A measurement value correction method according to the present invention is a measurement value correction method for correcting a measurement value obtained by tracing a surface of a work piece with a stylus, and including a step of preparing a plurality of work pieces made from same design data, a step of adopting one of the work pieces as a master work piece and obtaining a reference measurement value with the stylus, a step of obtaining calibration data based on a difference between the reference measurement value and the design data, a step of adopting one of the plurality of work pieces other than the master work piece as a measurement target work piece and obtaining a target measurement value with the stylus, and a step of obtaining a corrected measurement value by correcting the target measurement value by using the calibration data.

Abstract: An apparatus for the maintenance of wheels of vehicles, like a balancer or a device for mounting/dismounting tires, comprises a support adapted to support a rim of a wheel of a vehicle. A device for detecting the eccentricity of a tire of the wheel is mounted on the support. Such device comprises an optical system configured to capture a light beam reflected by a tread of the tire and focus it on a point of an optical sensor. The optical sensor emits a signal indicative of an average value of a radial distance of the linear portion from the main axis. A control unit processes a plurality of average values corresponding to different linear portions of the tread and obtained during the rotation of the tire, and detects the eccentricity of said tire.

Abstract: The invention discloses a method for roundness measurement, which includes the steps of, mounting and rotating an object on a rotary table; driving two measuring surfaces of two measurement units to respectively abut against two opposite sides of the object, wherein the two measurement units are disposed on two opposite sides of the rotary table and the two measuring surfaces are parallel to each other and perpendicular to a to surface of the rotary table; during rotation of the rotary table, measuring intermittently a shortest straight line distance between the two measuring surfaces and generating a variation data and after the rotary table completes a full-circle rotation, a processing unit receiving the variation data and generating measured data. The present invention also discloses a device for roundness measurement.

Abstract: Devices for measuring the surface state of a surface, at least one portion of which has a surface curvature. The devices may include a probe for being in contact with the curved surface portion. The probe may be stressed on the surface with a substantially constant stress. A way to measure the displacement of the probe may be provided and arranged to measure the displacement of the probe along an axis substantially perpendicular to the surface. The probe may also be relatively displaced in relation to the surface only along a path following the surface curvature.

Abstract: A machine tool including a non-contact affected layer detection sensor capable of detecting an affected layer with high precision is provided. A machine tool includes a non-contact affected layer detection sensor, a main body, probes and that contact the surface of an workpiece, arm portions supported by the main body, and dimension measurement sensors that output a signal that corresponds to the dimension of the workpiece on the basis of displacement of the arm portions with respect to the main body. The affected layer detection sensor is provided in the arm portion, and outputs a signal that corresponds to an affected state of the workpiece. The arm portions hold the probes respectively, and are displaceable with respect to the main body in accordance with the dimension of the workpiece.

Abstract: A coordinate measuring machine is calibrated by taking optical measurements of an optical flat that includes a grating placed on its surface. The arm of the CMM capable of multi-directional translation in relation to an object is fitted with a white-light interferometric objective and optical measurements are taken of the flat while translating the objective (or the flat) in the coordinate direction subject to calibration. The objective may serve also as the probe of the CMM.

Abstract: Surface texture measuring apparatus includes a measurement arm table storing mass of an entire measurement arm, an arm length from a supporting point to a stylus, and a horizontal and vertical barycenter of the measurement arm in a horizontal posture for each type of the measurement arm in which a second measurement arm having a different mass is attached; a measurement arm specifier; an inclination angle detector detecting an inclination angle of the detector; and a controller reading out from the measurement arm table the mass, the arm length, the horizontal barycenter, and the vertical barycenter for a specified measurement arm, calculating a difference between a measurement force of the measurement arm in the horizontal posture and a measurement force of the measurement arm in an inclined posture based on the read-out information and the inclination angle detected by the inclination angle detector, and adjusting a measurement force.

Abstract: A gear measuring method allows multi-point continuous measurement using a touch probe and is capable of reducing measuring time compared with known methods. For example, a base action for moving a sensing element of a touch probe along an ideal tooth form line of a workpiece (gear; W) or a tooth form line determined by calculation by controlling the movement of the sensing element and the rotation of the workpiece (W) and, in addition, an oscillation action for receiving first signals (ON signals or OFF signals) from the touch probe by bringing the sensing element into contact with the tooth surface of the workpiece during the base action and subsequently for receiving second signals (OFF signals or ON signals) from the touch probe by moving the touch probe in a direction along which the sensing element is separated from the tooth surface of the workpiece are continuously performed.

Abstract: Method for determining a twist structure in the surface roughness of a workpiece which is cylindrical at least in part includes that multiple sampling segments which extend in the axial direction of the workpiece and which are mutually spaced apart in the circumferential direction are carried out in a surface region of interest on the workpiece, and the value of at least one parameter of the twist structure is determined based on the measured values obtained using the sampling segments. An estimated value of at least one parameter of the twist structure is determined based on the measured values associated with a first sampling segment, the estimated value being corrected based on the measured values associated with at least one second sampling segment.

Abstract: A method of fabricating an integrally bladed rotor for gas turbine engines according to one aspect includes a step of positioning a blade on a hub in a joining procedure by using a priority surface of the blade as a reference surface. The priority surface is determined in relation to importance of surface functionality of the blades during engine operation.

Abstract: An eyeglass frame shape measurement device includes: an eyeglass frame holding unit including a first slider and a second slider for holding an eyeglass frame; a rim measuring unit including a tracing stylus for a rim of the eyeglass frame, and detecting the movement position of the tracing stylus to measure a shape of the rim; a template holder configured to attach a template and a measurement object of a demo lens; a template measuring unit including a tracing stylus shaft configured to contact an edge of the measurement object attached to the template holder, for measuring radius vector information of the measurement object; and a housing portion provided to house the template holder and provided in one of the first slider and the second slider when measurement using the template measuring unit is not being performed.

Abstract: An apparatus for measuring a nozzle includes a stand and a first sensor in sliding engagement with the stand. The first sensor is positioned to measure a first dimension of the nozzle. A method for measuring a nozzle includes placing the nozzle in a stand, sliding a first gauge along a first surface of the nozzle, and measuring a first dimension of the nozzle.

Abstract: A cylinder sleeve surface measurement assembly for measuring a surface roughness of a cylinder sleeve, especially a cylinder sleeve formed in an engine block. The assembly includes a fixture that holds a surface profiling device. The surface profiling device is provided with a stylus that perpendicularly projects from a measuring arm, and the fixture holds the surface profiling device such that the stylus remains in perpendicular contact with the surface of the cylinder sleeve. To ensure perpendicular contact, the fixture is provided with an arcuate surface that defines an arc matching that of a portion of the cylinder sleeve. Accordingly, the arcuate surface allows the measuring arm to remain parallel to a surface of the cylinder sleeve, thereby ensuring that the stylus remains perpendicular thereto.

Abstract: A profile measurement apparatus includes: a probe which includes a gauge head for measuring a profile of an object to be measured and which moves the gauge head within a given range; a movement mechanism which moves the probe; and a controller which measures the profile by controlling the movement mechanism to contact the gauge head against the object. The controller comprises: a movement amount acquisition section which acquires a movement amount of the gauge head from a reference position; a deviation acquisition section which acquires as a deviation the movement amount when the gauge head is in a non-contact state; a determination section which determines whether the deviation is greater than a first threshold value; and a resetting section which, when the deviation is greater than the first threshold value, resets the reference position to a position arrived at by combining the reference position and the deviation.

Abstract: A pair of pneumatic cylinders is used to counterbalance the weight of a large gantry supporting the optical head of an interferometric profiler. The gantry is supported by the cylinders within pairs of linear-bearing rail that provide a large vertical travel. The pressure in the cylinders is adjusted so as to provide an upward force sufficient to oppose the weight of the gantry and prevent its descent, but not so great as to cause it to rise. In essence, the counterbalance pressure is adjusted to equilibrate the weight of the gantry in such a way that a small force applied manually upward or downward will cause the gantry to move easily in either direction, thereby making it possible for an operator to position the optical head rapidly and with minimum effort as required for the initial alignment with a test object.

Abstract: A surface texture measuring instrument includes: a measuring device that includes a detector for detecting surface texture of a workpiece and an X-axis movement mechanism for moving the detector in a measurement direction; an elevation inclination adjuster capable of adjusting an elevation position and an inclination angle of a table on which the measuring device is mounted; a stage on which the workpiece is mounted; and a controller that controls the measuring device and the elevation inclination adjuster. The controller includes: a measurement controller that controls the X-axis movement mechanism to conduct a preliminary measurement and main measurement of the workpiece; a computing unit that acquires a result of the preliminary measurement from the detector and obtains an inclination angle of the workpiece at which the workpiece is inclined to the measurement direction; and a positioning controller for adjusting the inclination angle of the table based on the obtained inclination angle.

Abstract: An exemplary surface geometry characters measuring gauge includes a chassis, a spindle, a locating assembly, and a micrometer. The spindle is rotatably mounted on a surface of the chassis. The locating assembly is mounted on the spindle and structured and arranged for fastening a workpiece on the spindle. The micrometer is attached on the chassis corresponding to and spaced from the spindle. The micrometer is configured for contacting a surface of the workpiece and measuring one or more surface geometry characters of the workpiece.

Abstract: An apparatus for measuring a nozzle includes a stand and a first sensor in sliding engagement with the stand. The first sensor is positioned to measure a first dimension of the nozzle. A method for measuring a nozzle includes placing the nozzle in a stand, sliding a first gauge along a first surface of the nozzle, and measuring a first dimension of the nozzle.

Abstract: A contour measuring device includes a guide rail, a slidable assembly, and a measuring probe. The slidable assembly is slidably engaged with the guide rail. The slidable assembly includes a weight adjusting unit connected to the slidable assembly. At least part of the weight adjusting unit is detachable from the slidable assembly. The measuring probe is fixed on the slidable assembly. A weight of the slidable assembly provides a measuring force and a weight of the weight adjusting unit is adjustable to adjust a value of the measuring force.

Abstract: A method for sensing an object profile shape involves relatively sweeping (whisking or translating) in angular or translational increments an elongated whisker element having a deflectable cantilever region and an object so that the cantilever region bends as a result of sliding along an object periphery. The moment (torque) at a base region of the whisker element as a result of the bending is determined. The method then iteratively determines successive contact point locations on the object periphery based on small successive increments in angle or position of the whisker element and the sensed moment (torque).

Abstract: A detecting apparatus for detecting linearity of an object includes a platform, a slide rail vertically extending from the platform, two standard units slidably mounted to the slide rail, and a detecting unit. The detecting unit includes a mounting block slidably mounted to the slide rail, a test dial indicator fixed to the mounting block and including an elastically extendable spindle, and a detecting bar slidably mounded to the mounting block via a resilient member. The standard units are used to abut against the object to cooperatively define a detection reference plane. A first end of the detecting bar abuts against by the spindle of the test dial indicator, and a second end of the detecting bar is used to contact the object.

Abstract: A device for determining dimensions of a workpiece includes a locating apparatus, a determining apparatus and a main processor. The locating apparatus includes a locating board supporting workpieces and defining at least one detecting aperture therethrough. The determining apparatus includes a detecting module, the detecting module includes at least one laser detector, each laser detector includes a laser emitter and a laser receiver respectively mounted on two opposite sides of the locating board. The main processor is connected to the locating apparatus and the determining apparatus, the laser emitter emits laser beams traveling through the detecting aperture and received by the laser receiver, and the main processor determines the dimension of the workpiece according to the dimension of parts on the laser receiver shielded by the workpiece.

Abstract: A device and method for measuring the interior dimensions of a glove is provided. The internal glove sizing device disclosed may be used for quickly and automatically measuring the interior dimensions of a glove during and/or after manufacturing so that quality control personnel and customers can verify glove compliance with certain specifications and to ensure quality control.

Abstract: A method for inspecting a honeycomb structured body of the present invention is a method for inspecting a honeycomb structured body comprising a pillar-shaped honeycomb fired body having a multitude of cells placed in parallel with one another in the longitudinal direction with a cell wall therebetween, the method comprising: measuring the shape of the honeycomb structured body in the longitudinal direction through preparing a contact measurement apparatus including a reference surface, a rail disposed perpendicularly to the reference surface, and a measurement probe including a contacting probe configured to move along the rail; contacting one end face of the honeycomb structured body with the reference surface; and moving the measurement probe in a direction nearing the reference surface to contact the contacting probe with the other end face of the honeycomb structured body.

Abstract: A contour measuring probe includes an air guide, a sliding member and a probe tip. The air guide defines a guide hole. The sliding member is slidably received in the guide hole. The probe tip is fixed on an end of the sliding member. A cross-section of the sliding member is non-circular, and the guide hole is a non-circular hole, such that the sliding member slides only along an axis of the air guide.

Abstract: A method for measuring a surface profile using a surface sensing device mounted on an articulating probe head in which the probe head is moved along a nominal path relative to the surface profile, an at least approximation of the surface normal of the surface profile, the surface profile is sensed with the surface sensing device and the distance or force of the surface sensing device relative to the surface profile substantially in the direction of the surface normal. The surface normal may be determined by approximating at least one section to a curved profile which can be mathematically parameterised.

Abstract: The invention concerns a profile measuring fixture for the measuring of the profile of a surface of a narrow body, especially the profile of the surface of the wall of a tube end with a holding fixture (8) for the body (7) and at least a first measuring arm (4) with at least a moveable measuring arm (4), the probe head (9) scans the surface during the measurement and one of the first relative movements between at least the first probe head (9) and the at least first measuring arm (4). At least one probe head sensor (26) is provided during the measurement of the relative position between at least the first measuring arm (4) and the surface in a one dimensional travel direction (L), which changes travel fixture (2,3) whereby the first relative movement direction (S1) is provided inclined to the travel direction (L).

Abstract: A micromovement measuring device has a first element such as a probe tip or flat plate coupled to a test body (107) the movement of which is to be measured. A second element (104) is located adjacent to the first element, to form a gap (108) therebetween. As the test body and the first element gradually move away from the measuring element, so increasing the size of the gap, the second element is repeatedly moved up, to restore the gap to its original size. These repeated small quantized movements of the measuring element (104) are counted, and are used to provide an indication of how far the test body (107) has moved. In other embodiments, the first element may gradually move toward the second element, with the latter repeatedly moving away.

Abstract: A method of measuring a three-dimensional shape of a connection assembly of a stator coil in a turbine generator, includes first measuring a three-dimensional shape of a measurement area of the connection assembly of the stator coil in a measurement range set in advance by a laser non-contact three-dimensional shape measurement device, second measuring a three-dimensional shape of a measurement area of the connection assembly of the stator coil in a measurement range set in advance by a multi-joint contact three-dimensional shape measurement device, the multi-joint contact three-dimensional shape measurement device including a plurality of arms being coupled via a joint including a built-in encoder, and integrally synthesizing the three-dimensional shape data measured in the first measurement, the three-dimensional shape data measured in the second measurement, and shape measurement data of a local area measured manually, thereby drafting a plan of the stator connection assembly.

Abstract: An exemplary surface geometry characters measuring gauge includes a chassis, a spindle, a locating assembly, and a micrometer. The spindle is rotatably mounted on a surface of the chassis. The locating assembly is mounted on the spindle and structured and arranged for fastening a workpiece on the spindle. The micrometer is attached on the chassis corresponding to and spaced from the spindle. The micrometer is configured for contacting a surface of the workpiece and measuring one or more surface geometry characters of the workpiece.

Abstract: Objects having complex geometries, such as tubular segments with multiple bends, can be measured using a system including a coordinate measurement machine. The system can include multiple supports for the object to reduce error due to sag of an object under its own weight. The supports can include positionable support members formed of metal tape. The system can further include a processor configured to determine one or more support locations for the object based on a set of definition data for the object. With support locations for the object have been determined and supports placed, the object can be measured, and a post-comparison operation can be performed. Where the object differs greatly from the definition data, the support locations can be revised.

Abstract: Contours of a surface of a bearing which extends about an axis are displayed on a grid. To visualize the contours, points on the surface are measured at a plurality of angular positions to determine the corresponding measured values. The measured values at each angular position are normalized to determine a normalized measurement datum corresponding to each angular position. The normalized measurement datum is subtracted from each of the measured values to determine a plurality of deviations of the corresponding points. Shades are assigned that correspond to a range of possible deviations. Each of the deviations are displayed as a data segment on a grid that represents the shape of the surface of the bearing. Each data segment is shaded on the grid to the corresponding shade to provide a topographical representation of the contours of the surface of the bearing.