WO2000043769A1 - Dispositif et procede pour le controle par ultrasons d'elements de roulement - Google Patents

Dispositif et procede pour le controle par ultrasons d'elements de roulement Download PDF

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Publication number
WO2000043769A1
WO2000043769A1 PCT/EP2000/000348 EP0000348W WO0043769A1 WO 2000043769 A1 WO2000043769 A1 WO 2000043769A1 EP 0000348 W EP0000348 W EP 0000348W WO 0043769 A1 WO0043769 A1 WO 0043769A1
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WO
WIPO (PCT)
Prior art keywords
test
ultrasound
test body
ultrasonic
incidence
Prior art date
Application number
PCT/EP2000/000348
Other languages
German (de)
English (en)
Inventor
Hans Andreas Linder
Bernhard Caspers
Jürgen Hennicke
Hans-Jürgen THOMA
Hubert Müller
Original Assignee
Cfi Ceramics For Industry Gmbh & Co. Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cfi Ceramics For Industry Gmbh & Co. Kg filed Critical Cfi Ceramics For Industry Gmbh & Co. Kg
Priority to EP00901581A priority Critical patent/EP1149285A1/fr
Priority to DE10080126T priority patent/DE10080126D2/de
Priority to AU22925/00A priority patent/AU2292500A/en
Publication of WO2000043769A1 publication Critical patent/WO2000043769A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/36—Detecting the response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/38—Detecting the response signal, e.g. electronic circuits specially adapted therefor by time filtering, e.g. using time gates
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/222—Constructional or flow details for analysing fluids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/4445—Classification of defects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02854—Length, thickness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/04—Wave modes and trajectories
    • G01N2291/056—Angular incidence, angular propagation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/04—Wave modes and trajectories
    • G01N2291/057—Angular incidence, parallel to surface propagation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/26—Scanned objects
    • G01N2291/263—Surfaces
    • G01N2291/2634—Surfaces cylindrical from outside
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/26—Scanned objects
    • G01N2291/265—Spherical objects

Definitions

  • the present invention relates to a device and a method for testing a test specimen by means of ultrasound, preferably a spherical or cylindrical ceramic bearing element, for defects on the surface and in the area near the surface.
  • Bearing rollers are subjected to a 100% individual test using eddy current and light reflection on the surface of the bearing element.
  • a sample bearing element is used to calibrate this combined test method, on the surface of which an 800 ⁇ m long surface groove is made.
  • eddy current testing of ceramic bearing elements is not possible.
  • Ceramic bearing elements in particular made of silicon nitride (Si3N4), makes the availability of a production-oriented, quick test method that meets the requirement for safe usage behavior of the bearing elements more and more urgent. For this it is necessary that defects can be detected on the element surface and in the area close to the surface to a depth of approx. 2.5 mm.
  • US Pat. No. 5,005,417 describes a device in which an ultrasonic measurement takes place under water on a ball made of silicon nitride.
  • the ball is supported in a hemispherical depression in such a way that water flows through a nozzle let into the depression and thus rotates by one rotation.
  • axis can be offset.
  • the sphere is irradiated from the side with an ultrasound beam focused on its surface.
  • the direction of the ultrasound beam is eccentric, ie not directed towards the center of the ball, so that a large part of the ultrasound runs along the ball as a surface wave.
  • either the entire bearing with the recess or the ultrasound head can be rotated about an axis that is perpendicular to the axis of rotation of the ball.
  • the superimposed rotations make it possible to scan the entire spherical surface with the focus of the ultrasound.
  • a similar device is described for the measurement of cylindrical elements.
  • US-5 060 517 and US-5 184 513 describe an automatic test apparatus for ceramic spherical bearing elements.
  • the balls are taken from a supply by grippers and placed on rotating elements in a water bath.
  • a ball to be tested can be rotated almost arbitrarily via the rotation elements while it is irradiated with ultrasound from the side.
  • the ultrasound source can also be moved on an axis around the ball, so that the entire surface of the ball can be scanned.
  • US Pat. Nos. 5,056,368 and 5,398,551 relate to similar devices for measuring a sphere, special emphasis being placed on a complementary curvature of the sound source.
  • US Pat. No. 5,606,129 describes a test method for rotationally symmetrical vessels, in particular glass vessels, wherein the vessel to be tested is set in rotation by an air stream and is scanned by means of a test device. The test device is held in a fixed position with respect to the rotational movement of the vessel.
  • EP 429 302 AI describes an ultrasonic test method for detecting defects on balls and a corresponding device using at least two test heads.
  • the ball to be tested is located on a roller block that allows the ball to rotate.
  • the use of a roller block has the
  • a device for detecting material and processing errors on balls by sonicating the ball with ultrasound is known, at least two ultrasound transducers being provided.
  • the axes of the ultrasonic transducers are spatially offset from one another, one beam of rays being directed vertically and the other or the other being directed obliquely at the surface of the sphere.
  • DE 41 03 808 AI describes a quality assurance test device for the dimension and crack examination of thin-walled tube elements with ultrasound, several ultrasound transducers being used. A large number of ultrasonic transducers are required for rapid and reliable testing of elongated, thin-walled, tubular elements, which scan the test specimen on helical or spiral paths. The test device described is unsuitable for testing spherical test specimens.
  • test specimens in particular ceramic bearing elements such as balls and rollers, are tested with increased reliability and errors down to a size of 50 ⁇ m in the surface and near-surface area are quantitatively recognized.
  • a device for testing a test body preferably a spherical or cylindrical ceramic bearing element
  • a test body which contains manipulation devices for the relative movement between the test body and the ultrasonic test head and two or more ultrasonic test heads which are arranged in such a way that the planes of incidence of the ultrasound are the azimuth angle
  • n is the number of ultrasonic probes used and x is an integer from 0 to n-1.
  • the device according to the invention thus works with at least two ultrasound probes.
  • the time required for a test with the same number of measured values can be reduced to at least half (in the case of n ultrasonic test heads to one nth) in comparison with the time required for a test with a device which has only one ultrasonic test head .
  • This is a huge advantage in view of the fact that thousands of bearing elements have to be measured individually during production.
  • the number of measuring points (ie locations of the measurement on the sample) and / or measured values and thus the precision can be at least doubled (with n ultrasound probes) - with the same measuring duration. Or a combination of both effects can be selected, ie increased precision with a shortened measuring time by increasing the number of measured values by a factor ⁇ 2 (generally: ⁇ n).
  • An increase in precision can be achieved not only by a higher number of measured values, but also by the fact that the ultrasonic probes are designed and / or arranged in such a way that they sonicate a surface element or volume element of the test body under different conditions when this is manipulated using the manipulation devices in is positioned in their respective sound field.
  • the test specimen is measured, that is to say by means of ultrasound, under at least two different conditions, so that the likelihood of overlooking a defect decreases, which may be difficult to detect with regard to a single measurement condition.
  • a measurement condition is the direction of irradiation of the ultrasonic probes on the test specimen.
  • the ultrasound probes are arranged such that the ultrasound incidence planes have an azimuth angle of
  • n is the number of ultrasonic probes used and x is an integer from 0 to n-1.
  • the angle ⁇ e is preferably selected in the range of 0.5 times ⁇ 'to 1.5 times ⁇ ', so that the ultrasound beam is divided favorably into a part that penetrates into the depth and runs along the surface.
  • the nominal Angle ⁇ ' is calculated from the value of the surface wave velocity V 0 and the longitudinal wave velocity of the fluid V F specific to the material of the test specimen:
  • the device according to the invention preferably contains an automated feed and discharge of the test specimens in order to ensure fully automatic functioning.
  • This also includes a selection device in which the test specimens are separated depending on the result of the test.
  • the manipulation devices are advantageously designed such that, in addition to the holder, they also allow the held test specimen to rotate about an axis of rotation. Then the entire surface of the test body can be guided along the ultrasonic test heads during the rotation.
  • At least one of the ultrasonic probes can be pivotable about a pivot axis, preferably through an angle of up to 190 °.
  • the sound source can then be guided along the surface of the test specimen held.
  • the manipulation devices allow rotation of the test body and the ultrasonic test heads can also be pivoted. Then every point on the surface of the test specimen can be reached due to the two available degrees of freedom of movement.
  • the pivot axis is preferably perpendicular to the axis of rotation in order to maximize the surface area that can be reached.
  • the manipulation device can be designed such that it is essentially formed by the end faces of two rotatable drive axes, between which the test specimen can be held and rotated.
  • the drive axles or the end faces are axially displaceable to allow the test specimen to be clamped.
  • the manipulation device can also contain at least one suction gripper, with the aid of which the test specimens can be gripped and held by means of a negative pressure generated. Such a gripping process can be controlled particularly well via the negative pressure.
  • the suction gripper is preferably a hollow cone.
  • the ultrasonic head (s) is preferably pivoted by an angle of up to 100 ° and the test sequence after an intermediate rotation of the test body by preferably 90 ° the ultrasonic swivel axis is repeated, so that the test area unchecked in the first step is now checked.
  • the device contains a hollow spherical bearing or a hollow cylindrical bearing, depending on the complementary shape of the bearing elements to be tested (ball or cylinder).
  • the test specimen can be rotatably held in the bearing cavity.
  • at least one nozzle directed into the hollow interior is arranged in the bearing, through which a flowing medium can be directed onto the test body in order to take it along due to its viscosity and thus to set it in motion.
  • the bearing can contain two nozzles, which are preferably perpendicular to one another. Then, with two mutually perpendicular rotation components, any rotation of an inserted ball can be generated or an inserted cylinder can be brought into rotation about its longitudinal axis and can be displaced independently of it in the direction of the same.
  • the said bearing advantageously consists of two separable halves, which can be moved apart for inserting and removing the test specimen.
  • the invention also includes a method for testing a test body, preferably a spherical or cylindrical ceramic bearing element, for defects on the surface and in the area near the surface, in which the test is carried out by means of ultrasound, is measured on the test body with at least 2 ultrasound test heads simultaneously and during the test the test specimen and an ultrasonic test head are moved relative to each other.
  • a test body preferably a spherical or cylindrical ceramic bearing element
  • EP 429 302 A1 known method is characterized in that the measurements under n, where n corresponds to the number of ultrasound probes used, different ultrasound incidence planes are made, the azimuth angle of
  • n has the meaning given above and x denotes an integer from 0 to n-1.
  • the arrangement of the ultrasound probes according to the invention sonicates a surface element or volume element of the test body under different conditions.
  • the test specimen is therefore measured by means of ultrasound under at least two different conditions, so that the likelihood of overlooking a defect which possibly with regard to one of the
  • the ultrasound beam strikes the test specimen from different directions. This is of great importance because some defects cannot be recognized from all directions of radiation.
  • An example is elongated cracks, which are often only sufficient if they are transverse to the ultrasound beam.
  • test specimens are preferably fed in and out automatically and / or selected automatically and separated depending on the test result. This ensures a fully automatic, series-ready process.
  • the test specimen can be rotated during the measurement, which is preferably carried out at a speed of more than 30 U / s. During the rotation, the entire surface of the test body can be guided along the ultrasonic test heads.
  • the sound source is guided along the surface of the test specimen.
  • the ultrasonic test heads are pivoted and the test body rotated at the same time.
  • the pivot axis and the axis of rotation should not be parallel, preferably even perpendicular to each other. Because then in principle every point on the surface of the test specimen can be reached due to the two available degrees of freedom of movement.
  • the test specimen can be held in a bearing which is complementary to it and the flow of a medium, preferably water, can be directed onto it in order to set it in motion.
  • a medium preferably water
  • the coupling medium for the ultrasound which is present anyway, is used without great mechanical effort and completely non-destructively for the test body optimally used.
  • a particular flow can be selected from a direction that has a component that sets the cylinder in rotation and a second (generally much smaller) component that simultaneously ensures a movement of the cylinder in the longitudinal direction.
  • two non-parallel, preferably perpendicular flows of the medium can be directed onto the test body. Then, with two independent rotation components, any rotation of an inserted ball can be generated or an inserted cylinder can be brought into rotation about its longitudinal axis and can be displaced independently of it in the direction of the same.
  • the ultrasonic pulses used for the test preferably have a nominal frequency of more than 25 MHz in order to enable optimal error detection. They are advantageously, preferably via a liquid coupling medium
  • the ultrasound pulse repetition frequency is preferably more than 12000 Hz.
  • the angle ⁇ e is preferably selected in the range of 0.5 times ⁇ 'to 1.5 times ⁇ ', so that the ultrasound beam is divided favorably into a part that penetrates into the depth and runs along the surface.
  • the nominal angle ⁇ ' is calculated from the specific value of the surface wave velocity V 0 and the longitudinal wave velocity of the fluid Vp for the material of the test body:
  • the measurements are carried out under at least two different ultrasound incidence planes. It is preferred to measure from four directions, with the azimuth angles of 0 °, 45 °, 90 ° and 135 ° (ie the four directions are 45 ° apart).
  • the measurement from different directions has the advantage that anisotropic defects (eg elongated cracks) can no longer or only rarely be overlooked.
  • the measurement is preferably carried out in one
  • Grid network made, typically with a grid spacing of 50 to 100 microns. Then defects down to a size of 50 ⁇ m can still be detected.
  • Figure 1 shows two bearing elements.
  • Figure 2 shows the conditions on the test body during ultrasonic testing.
  • Figure 3 shows the ultrasonic echoes obtained.
  • Figure 4 shows the measurement of the echo with a time window.
  • Figure 5 shows the measurement grid
  • FIG. 6 shows the azimuth angles at which measurements can be made, for example.
  • Figure 7 shows a measuring device for balls with suction cup.
  • FIG. 8 shows a measuring device for balls with a selection device.
  • Figure 9 shows a measuring device for balls with a bearing.
  • FIG. 10 shows a complete test station for balls.
  • FIG. 11 shows a measuring device for cylinders with rotating rollers.
  • Figure 12 shows a measuring device for cylinders with a bearing.
  • Figure 13 shows the scheme of the test method.
  • the invention proposes a test method which is based on the use of an ultrasonic test method in which the focused, focused ultrasonic beam scans the entire surface of the test body (in the following, by way of example, a bearing element) point-by-point, systematically and completely, and thus the material and processing errors up to down to 50 ⁇ m in the surface and near surface area.
  • the tested bearing elements are separated into the quality classes "operational" and "not operational”.
  • Figure 1 shows two bearing elements in the form of a ball la and a roller (cylinder) Ib.
  • Coupling medium water coming, striking the bearing element, longitudinal dinale ultrasound beam splits into a surface wave (VA Sutilov: “Physics of Ultrasound", Springer-Verlag Vienna, New York (1984)), which is particularly sensitive reflected by surface defects 3, and into a shear wave, which is inclined at an angle ⁇ 45 ° penetrates into the component and detects defects in the near-surface area of the component.
  • VA Sutilov "Physics of Ultrasound", Springer-Verlag Vienna, New York (1984)
  • FIG. 3 shows the ultrasonic echoes which are received with this arrangement.
  • the peaks originate (from left to right) from the ultrasound transmission pulse, from the surface echo and (double peak) as an error echo from surface and / or volume defects.
  • FIG. 7 A first system for ultrasonic bearing ball testing is shown in Figure 7. With the vacuum suction lifter 6, the ball la to be measured is brought from a magazine 8 into the measuring position between the two ultrasound heads 7a and 7b and by the
  • Vacuum suction cone 4a held. After this positioning, the vacuum suction lifter is removed in order to release the ball rotation about the stepping motor-driven axis of rotation 5.
  • the two ultrasound probes are pivoted in the angular range from -50 ° to + 50 ° around the pivot axis 4b and part of the surface of the ball is checked (see FIG. 5).
  • one ultrasonic probe 7a is oriented perpendicular to the surface of the sphere and focused on a spherical layer lying far inside, and is thus able to detect material defects on this spherical layer in a highly sensitive manner.
  • the other ultrasound probe 7b is focused on the surface of the sphere and at an angle to the surface in the range from 7.5 ° to 22.5 ° (in the case of Silicon nitride ceramic as a spherical material and water as a fluid) inclined and able to detect defects in the surface and near the surface.
  • FIG. 6 shows the surface 2 of a bearing element with a surface defect 3 (an elongated crack). Since the detection sensitivity of a near-surface defect strongly depends on the orientation of the surface defect with respect to the incident ultrasound beam, the different azimuthal beam direction of the ultrasound beam prevents an elongated error from being struck only parallel to the ultrasound beam and therefore cannot be detected.
  • a measuring grid spacing of 50 - 150 ⁇ m proved sufficient to detect material inhomogeneities in the range> 50 - 150 ⁇ m (Knoop substitute defect length) depending on the quality of the ground ball surface.
  • the ceramic ball 1 a to be tested is brought into a starting position by means of a ball dispenser, from where it places a siphon 6 in the measuring position between the two conical and evenly formed end faces of the drive axles 5 a and 5 b of two
  • Stepper motors positioned. By axially shifting one or both Stepper motor axes 5a, the ceramic ball is clamped between the two axes and, after uncoupling the suction lifter, is moved at a high rotational speed (30-100 U / s).
  • the ultrasonic probes 7a, 7b are moved synchronously about the axis 4b from -50 ° to + 50 ° and scan the ceramic ball in the area near and near the surface for material defects, the two
  • Ultrasonic probes 7a, 7b are set to azimuth angles of 0 ° and 90 °.
  • the test sequence is repeated after the ball has been rotated by the suction lifter by 90 ° about the axis 4b, so that the surface areas of the ball hidden in the first step by the stepper motor axes 5a and 5b are also checked.
  • the ball clamping is released by the axial return movement of the stepper motor and the ball falls into a selection device 9 consisting of a sensor, which, according to the test result, transfers the tested ball to the containers of the quality classes e.g. KL1, KL2 and KL3 assigned.
  • FIG. 9 A third variant of the production-oriented ultrasonic testing of ceramic bearing balls is shown in FIG. 9.
  • the ball la to be tested is set in a very rapid rotation within a bearing, which is formed from the two concentric spherical caps 10a and 10b, by high-pressure water jets.
  • a bearing which is formed from the two concentric spherical caps 10a and 10b, by high-pressure water jets.
  • four ultrasound probes adjusted to the surface of the ball are permanently installed (only two 7a, 7b are shown).
  • Two water jet drive systems 12a, 12b which are arranged at right angles to one another with their spray nozzles 11a, 11b, are used for checking the entire spherical surface.
  • the side control of the two spray nozzles are controlled by computer-controlled valves 13 which, as a function of time, transfer from the sole drive of the first water jet to the sole drive of the second water jet.
  • the four ultrasound heads are used to implement the azimuthal scanning angles 0 °, 45 °, 90 °, 135 °, which are permanently installed in the spherical caps in accordance with these orientations.
  • the entire ball surface area can advantageously be detected here without the ball having to be reclamped.
  • FIG. 10 The loading of the ultrasound test device in a complete test station is shown in FIG. 10, in which the balls to be tested are brought into the measuring position on a conveyor belt and are separated according to quality classes via a conveyor belt and corresponding sorting devices.
  • the cylindrical bearing element ceramic roller is checked by ultrasound according to the principle shown in FIG.
  • the roller 1b is taken out of a magazine 8 with the aid of a suction lifter 6 and brought into the measuring position between the two driving stepper motors (axes 5b).
  • a roller block which consists of the rollers 14a and 14b and the pressure rollers 15a and 15b, serves for better axial centering of the ceramic roller.
  • the ultrasonic probes 7a, 7b and two further ultrasonic probes, not shown in the sketch, are set to the azimuthal angles of incidence 0 °, 45 °, 90 ° and 135 ° and are scanned in the axial direction over the roller rotating at high speed. After the test, the suction lifter 6 returns the ceramic roll to the magazine 8.
  • the rollers 1b are rotated with water jets to shorten the test cycle times in cylindrical bearings 16 and are axially displaced by the four built-in high-frequency ultrasound heads for defects in the surface and near the surface Area checked.
  • the process works in
  • FIG 13 finally shows the scheme of the test method.
  • a control computer 17 controls a robot 18, which takes care of the component supply.
  • the ultrasound scanning then takes place at the measuring station 20 by means of the ultrasound transmitters and receivers 19.
  • An evaluation computer 21 finally determines the result of the measurement and controls the selection device 9, which classifies the storage elements into containers for the different quality classes.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
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  • Acoustics & Sound (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

L'invention concerne un dispositif et un procédé pour le contrôle par ultrasons, en série et non destructif, de défauts supérieurs à 50 νm d'éléments de roulement céramiques (rouleaux et billes), englobant le transport intégral des échantillons, le contrôle lui-même et son évaluation. Selon l'invention, on utilise au moins deux têtes de contrôle par ultrasons avec lesquelles la mesure se fait simultanément sous différents angles d'azimut α. Pendant la mesure, la bille tourne autour d'un axe de rotation alors que les têtes de contrôle par ultrasons pivotent simultanément autour de l'axe de pivotement perpendiculaire à l'axe de rotation.
PCT/EP2000/000348 1999-01-22 2000-01-18 Dispositif et procede pour le controle par ultrasons d'elements de roulement WO2000043769A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP00901581A EP1149285A1 (fr) 1999-01-22 2000-01-18 Dispositif et procede pour le controle par ultrasons d'elements de roulement
DE10080126T DE10080126D2 (de) 1999-01-22 2000-01-18 Vorrichtung und Verfahren zur Prüfung von Lagerelementen mittels Ultraschall
AU22925/00A AU2292500A (en) 1999-01-22 2000-01-18 Device and method for testing bearing elements using ultrasound

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19902421 1999-01-22
DE19902421.9 1999-01-22

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Publication Number Publication Date
WO2000043769A1 true WO2000043769A1 (fr) 2000-07-27

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AU (1) AU2292500A (fr)
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1542004A1 (fr) * 2003-12-08 2005-06-15 Renate Brand Procédé et dispositif pour l'éxamination non-destructive, ultrasonore des pièces symétriques rotatives
DE102005010317B3 (de) * 2005-02-23 2006-08-24 Renate Brand Verfahren und Vorrichtung zur zerstörungsfreien Prüfung von Werkstücken
US7617733B2 (en) 2007-07-18 2009-11-17 Uchicago Argonne, Llc Method and apparatus for ultrasound phased array testing of bearing balls
US20180149620A1 (en) * 2015-06-01 2018-05-31 Siemens Aktiengesellschaft Inspection apparatus for a spherical body

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DE3004079A1 (de) * 1980-02-05 1981-08-13 FAG Kugelfischer Georg Schäfer & Co, 8720 Schweinfurt Vorrichtung zum erkennen von material- und bearbeitungsfehlern an kugeln
JPH03115969A (ja) * 1989-09-29 1991-05-16 Ngk Insulators Ltd ボールの超音波探傷検査方法及び装置
EP0429302A1 (fr) * 1989-11-21 1991-05-29 Ngk Insulators, Ltd. Méthode de test ultrasonore pour détecter des défauts de billes et appareil pour cela
DE4103808A1 (de) * 1990-02-15 1991-08-22 Gen Electric Abmessungs- und riss-untersuchung von duennwandigen rohrelementen mit ultraschall
US5184513A (en) * 1989-09-29 1993-02-09 Ngk Insulators, Ltd. Automatic ultrasonic testing apparatus for detecting flaws of structural balls
US5606129A (en) * 1994-01-19 1997-02-25 Lehmann; Martin Process for scanning inspection of rotationally symmetrical, particularly cylindrical, receptacles using a dynamic gas bearing, and inspection device for said process

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1542004A1 (fr) * 2003-12-08 2005-06-15 Renate Brand Procédé et dispositif pour l'éxamination non-destructive, ultrasonore des pièces symétriques rotatives
DE102005010317B3 (de) * 2005-02-23 2006-08-24 Renate Brand Verfahren und Vorrichtung zur zerstörungsfreien Prüfung von Werkstücken
US7617733B2 (en) 2007-07-18 2009-11-17 Uchicago Argonne, Llc Method and apparatus for ultrasound phased array testing of bearing balls
US20180149620A1 (en) * 2015-06-01 2018-05-31 Siemens Aktiengesellschaft Inspection apparatus for a spherical body
US10739312B2 (en) * 2015-06-01 2020-08-11 Siemens Gamesa Renewable Energy A/S Ultrasonic inspection apparatus for a spherical body

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