WO2015039651A1 - Dispositif pour mesurer une force normale ou un moment de flexion sur un élément de machine - Google Patents

Dispositif pour mesurer une force normale ou un moment de flexion sur un élément de machine Download PDF

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Publication number
WO2015039651A1
WO2015039651A1 PCT/DE2014/200093 DE2014200093W WO2015039651A1 WO 2015039651 A1 WO2015039651 A1 WO 2015039651A1 DE 2014200093 W DE2014200093 W DE 2014200093W WO 2015039651 A1 WO2015039651 A1 WO 2015039651A1
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WO
WIPO (PCT)
Prior art keywords
machine element
axis
sensor
arrangement
arrangement according
Prior art date
Application number
PCT/DE2014/200093
Other languages
German (de)
English (en)
Inventor
Jan Matysik
Stephan Neuschaefer-Rube
Original Assignee
Schaeffler Technologies AG & 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 Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2015039651A1 publication Critical patent/WO2015039651A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
    • G01L3/02—Rotary-transmission dynamometers
    • G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
    • G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
    • G01L3/101—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means
    • G01L3/102—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means involving magnetostrictive means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0009—Force sensors associated with a bearing
    • G01L5/0023—Force sensors associated with a bearing by using magnetic sensors

Definitions

  • the present invention relates to an arrangement for measuring a normal force and / or a bending moment on an axis extending in a machine element using the inverse magnetostrictive effect.
  • transducer element which is intended for use in a torque or force sensor.
  • the transducer element is integral with a shaft of magnetizable material and has magnetization aligned in an axial direction.
  • DE 600 07 641 T2 shows a transducer element which is provided for a torque or force sensor converter.
  • magnetizations are formed in a radially inner region and in a radially outer region.
  • DE 601 05 794 T2 shows a force-sensitive transducer element comprising a body of magnetic material, wherein in the body at least two magnetized regions are formed, which extend at an angle to the power transmission direction and have opposite magnetization polarities.
  • DE 699 36 138 T2 shows a magnetic force sensor in which a magnetized material is exposed to a bending moment, wherein the external magnetic field of the magnetized material can be determined with the aid of a sensor arrangement.
  • WO 201 1/085400 A1 shows a magnetoelastic force sensor with which mechanical loads of an element can be measured. The element has a tangentially circulating magnetization and is loaded with a bending moment. On a middle level there is a magnetic field sensor.
  • WO 01/27638 A1 shows a vibration sensor with a shaft which is circumferentially or longitudinally magnetized. From WO 2006/053244 A2 a torque sensor is known which comprises a magnetization of a rotating shaft. The magnetization is formed circumferentially.
  • US 8,191,431 B2 shows a sensor with a magnetized shaft in which at least two magnetically active regions extend axially.
  • the object of the present invention is to expand the possibilities for measuring normal forces and bending moments on machine elements using the inverse-magnetostrictive effect.
  • the above object is achieved by an arrangement according to the appended claim 1.
  • the arrangement according to the invention is used to measure a normal force and / or a bending moment on a machine element extending in an axis.
  • the normal force is aligned in the direction of the axis. It is thus an axially aligned force, for example, a tensile force or a compressive force.
  • the bending moment is aligned perpendicular to the axis and leads to tensile forces and pressure forces inside the machine element.
  • the normal force or the bending moment acts on the machine element, which leads to mechanical stresses and the machine element usually deforms slightly.
  • the machine element has a sensor region, which forms an integral part of the machine element and is at least partially exposed to the normal force or the bending moment to be measured.
  • the normal force or the bending moment leads to the machine element to a force in the sensor region of the machine element, which is a measure of the normal force or for the bending moment.
  • the sensor area is magnetized or can be magnetized. Therefore, the sensor region is magnetized by a permanent magnetization or the arrangement further comprises a magnetizing means for temporary magnetization of the sensor region, wherein the temporary magnetization can also take place dynamically. In any case, the sensor area is magnetized in an operating state of the arrangement.
  • the sensor area can also be considered as a primary sensor. Due to the inverse-magnetostrictive effect, a change of a force occurring in the sensor area into a magnetic field takes place in the sensor area. Accordingly, the inventive arrangement further comprises at least one magnetic field sensor, which is arranged opposite the machine element.
  • the magnetic field sensor is used to determine a magnetic field and is designed for measuring at least one vectorial component of a magnetic field emerging from the machine element, which is caused on the one hand by the magnetization of the sensor region and on the other hand by the normal force and / or by the bending moment.
  • the at least one magnetic field sensor With the aid of the at least one magnetic field sensor, it is thus possible to measure the magnetic field that occurs due to the inverse magnetostrictive effect due to the magnetization of the sensor area and due to the normal force acting on the machine element or the bending moment acting on the machine element.
  • the sensor area is spatially limited by at least one shaping of the machine element, which is designed to convert the normal force acting on the machine element or the bending moment acting on the machine element into at least one shearing force.
  • the shear force is perpendicular or at least obliquely aligned with the axis.
  • the shearing force acts on the machine element, in particular in the sensor area of the machine element.
  • the shaping leads to a surface of the machine element, which deviates from the shape of the rest of the machine element.
  • the shaping has, at least in one section, a surface with an axial and / or tangential direction component. The direction of the surface is determined by a normal vector of the surface.
  • the normal vector is thus not arranged only in the radial direction, but has at least one axial and / or tangential component.
  • the direction of the surface, d. H. the normal vector of the surface can also be aligned completely axially or tangentially.
  • the indicated radial direction and the indicated tangential direction are basically related to the axis of the machine element.
  • Said portion of the surface of the molding may be formed by different geometric shapes.
  • this section of the surface can be flat or three-dimensional.
  • the section may have an axially aligned dimension and a tan. have gential aligned dimension, resulting in a normal vector with axial and / or tangential component.
  • the portion may, for example, have an axially aligned dimension and a radially oriented dimension, resulting in a normal vector with at least one axial component.
  • the shaping represents at least one possible additional spatial limitations of the sensor area.
  • the permanently or temporarily magnetized sensor area can extend further in other directions.
  • the shaping permits an indirect measurement of normal forces since the normal forces are converted into a shearing force which, on account of the inverse magnetostrictive effect, leads to a magnetic field outside the machine element, which can be measured directly with the magnetic field sensor, starting from the magnetization of the sensor area.
  • bending moments are measurable, since bending moments to normal forces, ie lead to tensile and compressive forces within the machine element.
  • a particular advantage of the arrangement according to the invention is that the possibilities for measuring forces and moments on the machine element are substantially expanded by a change in the shape of the machine element to be realized with little effort.
  • the measurement of normal forces and bending moments is preferably a supplement to the measurement options.
  • the arrangement is preferably also designed to measure shear forces, shear forces and / or torsional moments.
  • the machine element preferably forms an integral part of the arrangement.
  • the sensor region is preferably formed by a three-dimensional partial region of the volume of the machine element.
  • the surface of the molding can be directed to the outside of the machine element or it may be directed inwards when the machine element has a cavity.
  • the molding is preferably axially spaced from axial ends of the machine element.
  • the molding is preferably axially spaced from an axial section of the machine element, in which the machine element is clamped.
  • the molding is formed by a recess in the machine element, for example in the form of a depression, a groove or a hole.
  • the recess has side surfaces whose normal vector has at least one axial and / or tangential component.
  • the recess has for this purpose an axially aligned dimension and a tangentially oriented dimension.
  • the recess preferably has a bottom surface, so that the recess is not passing through the machine element.
  • the recess preferably has four of the side surfaces which together with the bottom surface form the surface of the recess.
  • the side surfaces and the bottom surface need not be even;
  • the bottom surface is preferably formed by a section of a cylinder jacket.
  • the bottom surface preferably has the projected shape of a rectangle or a trapezium.
  • the bottom surface is particularly preferably formed by a rectangle or a trapezium, which is projected onto a cylinder jacket.
  • the corners of the rectangle or the trapezoid may be rounded.
  • the side surfaces adjoining the rectangular or trapezoidal bottom surface are preferably inclined with respect to the radial direction, wherein the recess has a smaller base surface as the depth of the recess increases.
  • the recess extends within an angular section about the axis, which is preferably less than 180 °; more preferably less than 90 °.
  • the angle section is formed for example by a cylinder sector.
  • the long sides of two of the four side surfaces may be aligned parallel to the axis, while the long sides of the other two side surfaces are aligned perpendicular to the axis.
  • the longitudinal sides of two of the four side surfaces are preferably inclined with respect to the axis; Particularly preferably opposite and at an equal angle, so that the recess has the projected shape of an isosceles trapezoid whose axis of symmetry is aligned parallel to the axis of the machine element.
  • the recess is formed by a groove in the surface of the machine element.
  • the groove preferably runs completely circumferentially about the axis, so that the groove is closed.
  • the groove may, for example, be designed with a constant groove width, wherein the orientation of a center line of the groove relative to the axis changes along the rotation of the groove about the axis.
  • the groove preferably has sections in which the alignment of the center line with respect to the axis is constantly inclined. Preferably, two of these sections are present, wherein the center line in the two sections particularly preferably opposes and is inclined at an equal angle relative to the axis.
  • the groove can also be designed with a varying groove width, so that the groove width changes along the rotation of the groove about the axis.
  • the groove width can increase constantly from one point on the circumference of the machine element along the circulation in order to abruptly decrease to the initial value after the circulation.
  • the bottom surface of this groove thus has the shape of an isosceles trapezium, which is projected onto the circumference of the machine element.
  • the groove width can change along the rotation around the axis but also in another way; For example, increase and decrease several times. The change does not have to be linear.
  • the recess for example in the form of a groove, can extend symmetrically or asymmetrically along the circumference of the machine element. The extent of the recess may also be inclined relative to the axis, so that the recess extends diagonally.
  • the side surfaces of the recess may be flat or curved.
  • the transition from the basic shape of the machine element to the recess can be formed suddenly, steadily or even kink-free.
  • the machine element preferably has a plurality of the recesses.
  • the recesses may be formed differently, for example, to be able to measure different normal forces.
  • the recesses are preferably the same or mirrored to each other.
  • the recesses may repeat themselves, for example, in the axial direction or circumferentially about the axis.
  • the machine element preferably has the form of a hollow cylinder, except for the one or more recesses.
  • the machine element may also have the shape of a cylinder, a cone, a truncated cone, a hollow cone, a hollow truncated cone, a cuboid, a versatile prism, a rod, a shaft, etc., except for the one or more recesses.
  • the molding is formed by a transition region in which a diameter of the machine element changes in the direction of the axis. In the transition region, the machine element has a surface whose normal vector has an axial component. The transition region has an axially aligned dimension and a radially oriented dimension for this purpose.
  • the diameter which changes in the transition region may be an outer diameter and / or an inner diameter of the machine. act element.
  • the machine element is hollow with a likewise extending in the axis cavity.
  • the inner diameter and the outer diameter of the machine element preferably change uniformly in the direction of the axis.
  • either the inner diameter or the outer diameter of the machine element preferably changes in the direction of the axis.
  • the transition region preferably has an axial extension.
  • the transition region is preferably arranged axially between two hollow-cylindrical sections of the machine element. These two sections may have different outer and inner diameter, but also the same outer and inner diameter.
  • the transition region preferably has the shape of a hollow truncated cone, wherein the cavity is also frustoconical.
  • the hollow truncated cone is preferably arranged axially between the two hollow cylindrical sections of the machine element.
  • the hollow truncated cone can also be arranged within a cavity of one of the two hollow cylindrical sections of the machine element.
  • the molding is formed by two of the transition regions, between which axially an inner hollow cylindrical or cylindrical trained portion of the machine element is arranged.
  • the two transition regions are arranged together with the inner portion between two outer hollow cylindrical sections of the machine element.
  • the two outer sections preferably have the same outer diameter and a same inner diameter.
  • the transition region is preferably axially spaced from the axial ends of the machine element.
  • the transition region is at an axial end of the machine element arranged.
  • the transition region may be formed as a flange, wherein the flange-like end of the machine element represents the change in the outer diameter of the machine element.
  • the transition region can also be formed by a cover-like closure of the cavity, wherein the lid-like end of the machine element represents the change in the inner diameter of the machine element.
  • the machine element preferably has several of the transition areas.
  • the transition regions can be designed differently, in order for example to be able to measure different normal forces.
  • the transition regions are preferably the same or mirrored to each other.
  • the change of the diameter within the transition region can be linear or also in the form of a higher-order curve.
  • the changing diameter can change abruptly, steadily or even kink-free.
  • the machine element is preferably hollow cylindrical or cylindrical. However, the machine element can also be formed in a cuboid or prism shape. The varying diameter is then to be considered in relation to an enveloping shape of circular cross-section.
  • the sensor region of the machine element forms an integral part of the machine element and is preferably formed integrally with the rest of the machine element.
  • the sensor region is preferably formed in a magnetoelastic section of the machine element.
  • the machine element preferably consists of a magnetostrictive material.
  • the machine element preferably, not only a portion, but the machine element as such is magnetoelastic educated.
  • the machine element consists of a magnetostrictive material.
  • the sensor area is formed only by a superficial portion of the machine element.
  • the sensor area may be designed as a magnetostrictive layer, while the remaining machine element consists of another material, for example a non-magnetostrictive material such as glass fiber.
  • the sensor region of the machine element preferably has a permanent magnetization, wherein the permanent magnetization is preferably closed in itself.
  • the arrangement according to the invention comprises said magnetizing means for magnetizing the sensor area, which may be formed for example by an electromagnet or by a permanent magnet.
  • the magnetizing means allows the introduction of an electric current into the machine element, which leads to the magnetization of the machine element in the sensor area.
  • the magnetic field sensor is preferably stationary and spaced from the machine element. While the normal force or the bending moment can lead to movements or deformations of the machine element, the magnetic field sensor does not change its stationary position.
  • the magnetic field sensor can be regarded as a secondary sensor and is preferably formed by a magnetic field density sensor or by a magnetic field strength sensor. In principle, any type of sensor can be used insofar as it is suitable for measuring the magnetic fields produced by the inverse-magnetostrictive effect.
  • the arrangement comprises a plurality of the magnetic field sensors.
  • the one or more magnetic field sensors can be arranged, for example, in the recess or in a cavity of the machine element.
  • the one or more magnetic field sensors are alternatively preferably arranged outside the cavity.
  • the machine element is preferably formed by a shaft or by a flange.
  • the shaft or the flange can be designed for loads due to different forces and moments.
  • the machine element may be formed, for example, by a hollow shaft.
  • FIG. 1 a machine element in a cross-sectional view; that in Fig. 1. shown machine element in a further cross-sectional view; two recesses in a machine element of a first embodiment of the arrangement according to the invention in two views; two recesses in a machine element of a second embodiment in two views; two recesses in a machine element of a third embodiment in two views; a groove in a machine element of a fourth embodiment in two views; a groove in a machine element of a fifth embodiment in two views;
  • FIG. 10 shows a groove in a machine element of an eighth embodiment in two views
  • Fig. 1 1 a groove in a machine element of a ninth embodiment in two views
  • Fig. 12 a machine element of a tenth embodiment with a
  • FIG. 13 shows a machine element of an eleventh embodiment with an transition region
  • Transition area; 16 shows a machine element of a fourteenth embodiment with a
  • Fig. 17 a machine element of a fifteenth embodiment with a
  • FIG. 18 shows a machine element of a sixteenth embodiment with a transition region
  • FIG. 19 shows a machine element of a seventeenth embodiment with a transition region
  • FIG. 20 shows a machine element of an eighteenth embodiment with a transition region
  • FIG. FIG. 21 shows a machine element of a nineteenth embodiment with a transition region
  • FIG. FIG. 22 shows a transfer of the embodiment shown in FIG. 19 into the embodiment shown in FIG. 20;
  • FIG. 23 shows a machine element of a twentieth embodiment with a transition region
  • FIG. and FIG. 24 shows a machine element of a twenty-first embodiment with a transition region.
  • Fig. 1 shows a machine element in a cross-sectional view.
  • the machine element has the shape of a hollow cylinder and serves, for example, as a hollow shaft.
  • the machine element has an axis 01, which also represents the axis of symmetry of the machine element.
  • the machine element is exposed to normal forces, which are aligned in the direction of the axis 01, so that they act as tensile forces or as compressive forces. Furthermore, the machine element is exposed to bending moments whose axis of rotation is arranged perpendicular to the axis 01.
  • FIG. 2 shows the machine element shown in FIG. 1 in a further cross-sectional view.
  • the cutting plane is perpendicular to the axis 01 here.
  • an angle ß is illustrated.
  • Fig. 3 to Fig. 1 1 Dar represent positions of the machine element with respect to the angle ß.
  • the machine element shown in FIGS. 1 and 2 has one or more recesses 03 or grooves 08, which are shown in different embodiments in FIGS. 3 to 1.
  • FIGS. 3 to 1 each show an embodiment of the machine element of an arrangement according to the invention in two views.
  • the machine element is shown in each case via a rolling of the machine element over the angle ⁇ (shown in FIG. 2).
  • the cylinder jacket-shaped surface of the hollow cylindrical machine element is shown in each case as a rectangle.
  • Machine element each shown as a rectangle.
  • the lower part of FIGS. 3 to 11 each show a partial cross-sectional view of the machine element, the view lying in the plane of the axis 01 (shown in FIG. 1).
  • the arrangement further comprises a magnetic field sensor (not shown), which is located in the vicinity of the recesses 03 or the grooves 08.
  • the recesses 03 and grooves 08 are arranged in a sensor region (not marked) of the machine element, which consists of a magnetoelastic material.
  • the sensor area is permanently magnetised. Alternatively, the sensor area is magnetized by a magnetizing means (not shown).
  • FIG. 3 shows a first embodiment in which the machine element has two identical recesses 03, which are introduced into the surface of the hollow-cylinder-shaped machine element.
  • the recesses 03 each represent a depression.
  • the recesses 03 each have a bottom surface 04, which represents a section of a cylinder jacket surface.
  • the bottom surface 04 is bounded laterally by four side surfaces 06, which represent a transition to the cylindrical shape of the machine element.
  • the side surfaces 06 are not arranged perpendicular to this cylindrical shape. Accordingly, there are no radii of the cylindrical shape in the side surfaces 06. Instead, the side surfaces 06 are inclined relative to these radii, so that the surface of the cylindrical shape of the machine element does not abruptly pass into the depressions formed by the recesses 03.
  • the bottom surfaces 04 of the two recesses 03 each have the shape of a rectangle, which is projected onto the cylinder surface.
  • This projected rectangular shape is limited by two of the four side surfaces 06, whose longitudinal axes are aligned parallel to the axis 01, and by two of the four side surfaces 06, whose longitudinal axes are aligned perpendicular to the axis 01.
  • the corners of the projected rectangle shape are rounded.
  • Each two adjacent of the four side surfaces 06 have an angle ⁇ ' to each other, which is 90 °.
  • the two recesses 03 each extend in a sector of the cylinder mold of the machine element whose center angle is less than 90 °.
  • FIG. 4 shows a second embodiment, which initially equals the embodiment shown in FIG. 3.
  • the bottom surfaces 04 of the two recesses 03 each have the shape of an isosceles trapezium, which is projected onto the cylinder surface.
  • This projected trapezoidal shape is limited by two of the four side surfaces 06, whose longitudinal axes are aligned perpendicular to the axis 01, and by two of the four side surfaces 06, whose longitudinal axes are inclined to the axis 01.
  • an angle ⁇ is spanned, which is approximately 30 °.
  • FIG. 5 shows a third embodiment, which initially equals the embodiment shown in FIG. 4.
  • the projected trapezoidal shapes of the bottom surfaces 04 of the two recesses 03 are mirror images of each other.
  • Fig. 6 shows a fourth embodiment, in which the machine element has a recess in the form of a groove 08 which is introduced into the surface of the hollow cylindrical machine element.
  • the groove 08 represents a depression.
  • the groove 08 has a bottom surface 09, which represents a section of a cylinder jacket surface.
  • the bottom surface 09 is laterally delimited by two side surfaces 1 1, which represent a transition to the cylindrical shape of the machine element.
  • the groove 08 is formed circumferentially about the axis 01 (shown in FIG. 1) so as to be endless.
  • the width of the groove 08 is constant along its circumferential extent. The alignment of a center line of the groove 08 with respect to the axis 01 changes along the rotation of the groove 08 about the axis 01.
  • the groove 08 extends tangentially around the axis 01.
  • the groove 08 is inclined to the tangential direction, so that the center line of the groove 08 is inclined relative to the circumference of the machine element and thus also with respect to the axis 01.
  • the groove 08 describes a curve to deviate to a certain extent from the tangential direction and then again to take the tangential direction.
  • FIG. 7 shows a fifth embodiment, which initially equals the embodiment shown in FIG. 6.
  • the groove 08 describes no kink-free arc. Instead, the groove 08 has a constant inclination in those sections in which its center line is inclined with respect to the tangential direction.
  • the inclination of the center line of the groove 08 with respect to a line which lies on the lateral surface of the hollow cylindrical machine element and is arranged parallel to the axis 01 is + ⁇ ' or - ⁇ ' in these sections, so that these two sections are mirror-symmetrical the said line are arranged.
  • FIG. 8 shows a sixth embodiment which, like the embodiments shown in FIGS. 6 and 7, has a groove 08.
  • this groove 08 does not have a constant groove width, but the groove width increases to a peripheral portion and then decreases again.
  • One of the two side surfaces 1 1 extends only in the tangential direction, so that the change in the groove width is realized exclusively on the other of the two side surfaces 1 1.
  • the orientation of this side surface 1 1 changes steadily and without kink, so that the course of this side surface 1 1 describes a curve, this course is mirror-symmetrical to a line which lies on the lateral surface of the hollow cylindrical machine element and is arranged parallel to the axis 01.
  • FIG. 9 shows a seventh embodiment, which initially equals the embodiment shown in FIG. 8.
  • the two side surfaces 1 1 mirror-symmetrical to each other, so that the center line of the groove 08 forms the line of symmetry for the two side surfaces 1 1 and is aligned only tangentially.
  • the groove width along the circumferential circulation of the groove 08 has not only a maximum and a minimum, but two maxima and two minima. The two maxima are also different sizes.
  • FIG. 10 shows an eighth embodiment, which initially equals the embodiment shown in FIG. 9.
  • the groove width changes along the circumferential revolution of the groove 08 linearly from a minimum to a maximum and then jump to the minimum again.
  • the two side surfaces have an angle ⁇ ' to each other, which can be varied over a wide range.
  • FIG. 11 shows a ninth embodiment, which initially resembles the embodiment shown in FIG.
  • the groove 08 is not circumferentially about the axis 01 (shown in Fig. 1), but aligned in the direction of the axis 01. Consequently, the groove 08 is not endless in this embodiment.
  • FIG. 12 shows a machine element of a tenth embodiment, which has a transition region 14.
  • the hollow-cylindrical machine element has two hollow cylindrical axial sections 12, 13 with different diameters, wherein the transitional section 14 is arranged axially between these two axial sections 12, 13.
  • the diameter changes linearly. Change it the outer diameter and the inner diameter of the hollow truncated cone-shaped transition region 14 to the same extent.
  • the jacket of the hollow truncated cone-shaped transition region 14 has an angle ⁇ with respect to the axis 01, which can be varied over a wide range.
  • FIG. 13 shows an eleventh embodiment which initially resembles the embodiment shown in FIG. 12.
  • the transition region 14 is axially reversed so that it is inside the hollow cylindrical shape of that portion 12 of the machine element in which the machine element has the larger diameter.
  • Fig. 14 shows a twelfth embodiment which is similar to the embodiment shown in Fig. 12 as much as possible.
  • the angle ⁇ can be varied between 0 ° and 360 °.
  • the outer diameter and the inner diameter of the machine element change kink-free at the transitions from the hollow-cylindrical axial sections 12, 13 to the hollow-truncated cone-shaped transition region 14. Roundings are formed at these transitions.
  • FIG. 15 shows a thirteenth embodiment which initially resembles the embodiment shown in FIG.
  • the two hollow cylindrical axial portions 12, 13 are arranged with the different diameters in a different axial order, so that the transition region 14 has a reverse axial orientation or can be regarded as mirrored. Accordingly, the angle ⁇ can be regarded as> 180 °.
  • Fig. 16 shows a fourteenth embodiment, which is similar to the embodiment shown in Fig. 15 first. However, the transition region 14 forms an axial end, so that only one of the hollow cylindrical axial portions 13 of the machine element is present. Reduced in the transition region 14 the diameter of the machine element largely leaps and bounds. The transition region 14 thus forms a cover-like conclusion of the cavity of the machine element. Since the diameter of the machine element in the transition region 14 largely changes abruptly, the transition region 14 extends in the radial direction relative to the axis 01, so that the axis 01 is given an angle ⁇ of 90 °.
  • FIG. 17 shows a fifteenth embodiment, which first resembles the embodiment shown in FIG.
  • the diameter of the machine element in the transition region 14 increases largely by leaps and bounds.
  • the transition region 14 thus forms a flange-like termination of the machine element. Since the diameter of the machine element in the transition region 14 largely changes abruptly, the transition region 14 extends in the radial direction relative to the axis 01, so that the axis 01 is given an angle ⁇ of 270 °.
  • FIG. 18 shows a sixteenth embodiment, which initially equals the embodiment shown in FIG. 12. However, the angle ⁇ is larger in this embodiment.
  • FIG. 19 shows a seventeenth embodiment, which first equals the embodiment shown in FIG.
  • the two hollow-cylindrical axial sections 12, 13 of the machine element have the same inner diameter, so that only the outer diameter changes in the transitional region 14.
  • the outer diameter changes in the axial direction kink-free.
  • FIG. 20 shows an eighteenth embodiment, which first equals the embodiment shown in FIG. However, the two hollow-cylindrical axial sections 12, 13 of the machine element have the same outer diameter, so that only the inner diameter changes in the transitional region 14.
  • Fig. 21 shows a nineteenth embodiment, which is similar to the embodiment shown in Fig. 20 first. However, the inner diameter changes in the opposite axial direction and to a lesser extent, so that the angle ⁇ is larger.
  • FIG. 22 illustrates a possible constructive transfer of the embodiment shown in FIG. 19 into the embodiment shown in FIG. 20 by means of reflection at a radial plane.
  • FIG. 23 shows a twentieth embodiment, which first equals the embodiment shown in FIG. However, this embodiment has a third axial section 16 which, like the first axial section 12, has a hollow-cylindrical shape and, moreover, is the same as the first axial section 12.
  • the second axial section 13 is formed here as fully cylindrical and is located axially between the two hollow cylindrical sections 12, 16 of the machine element. Between the axial sections 12, 13, 16 two of the transition regions 14 are arranged. The two transition regions 14 are of the same design and arranged mirror-symmetrically to one another.
  • Fig. 24 shows a twenty-first embodiment, which is similar to the embodiment shown in Fig. 23 first.
  • the central axial portion 13 is also formed as a hollow cylinder and has a larger diameter than the other two hollow cylindrical portions 12, 16 of the machine element. Accordingly, the transition regions 14 are reversed.

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Abstract

L'invention concerne un dispositif pour mesurer une force normale et/ou un moment de flexion sur un élément de machine s'étendant dans un axe (01) à l'aide de l'effet magnétostrictif inverse. L'élément de machine comprend une partie de détection présentant une magnétisation permanente ou le dispositif comprend un élément d'aimantation destiné à aimanter la partie de détection. Le dispositif comprend par ailleurs au moins un capteur de champ magnétique destiné à mesurer une composante d'un champ magnétique induit par l'aimantation de la partie de détection et par la force normale et/ou par le moment de flexion. Selon l'invention, la partie de détection est délimitée par une partie formée (14) destinée à convertir la force normale ou le moment de flexion en une force de cisaillement. La partie formée (14) présente au moins dans un segment une surface présentant un vecteur normal qui possède une composante de direction axiale et/ou une composante de direction tangentielle.
PCT/DE2014/200093 2013-09-23 2014-02-27 Dispositif pour mesurer une force normale ou un moment de flexion sur un élément de machine WO2015039651A1 (fr)

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DE102013219079.4A DE102013219079A1 (de) 2013-09-23 2013-09-23 Bauteil, Vorrichtung und Verfahren zur Messung einer Materialspannung mittels Magnetostriktion
DE102013219079.4 2013-09-23

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PCT/DE2014/200093 WO2015039651A1 (fr) 2013-09-23 2014-02-27 Dispositif pour mesurer une force normale ou un moment de flexion sur un élément de machine
PCT/DE2014/200345 WO2015039655A1 (fr) 2013-09-23 2014-07-23 Composant, dispositif et procédé de mesure d'une tension matérielle par magnétostriction

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016200144B3 (de) * 2016-01-08 2017-06-29 Schaeffler Technologies AG & Co. KG Verfahren und Anordnung zum Messen einer Kraft oder eines Momentes an einem eine Öffnung aufweisenden Maschinenelement
DE102016200145B3 (de) * 2016-01-08 2017-06-29 Schaeffler Technologies AG & Co. KG Verfahren zum Bereitstellen einer Anordnung zum Messen einer Kraft oder eines Momentes

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016218017B3 (de) 2016-09-20 2018-01-11 Schaeffler Technologies AG & Co. KG Drehmomentenmessanordnung
DE102018218598A1 (de) * 2018-08-24 2020-02-27 Zf Friedrichshafen Ag Wankstabilisator und Sensoreinrichtung für einen Wankstabilisator
DE102020121269A1 (de) 2020-08-13 2022-02-17 Schaeffler Technologies AG & Co. KG Magnetoelastische Sensorvorrichtung sowie Antriebsstrang mit der Sensorvorrichtung
DE102022002785A1 (de) 2022-07-28 2024-02-08 Hochschule für Angewandte Wissenschaften Hamburg Körperschaft des Öffentlichen Rechts Werkzeug für die Schraubenmontage mit Magnetsensor-Array zur Torsions-Messung

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69222588T2 (de) 1991-07-29 1998-05-20 Magnetoelastic Devices Inc Berührungsfreier ringförmig magnetisierter Drehmomentsensor, Verfahren und Wandlerring
DE19821381A1 (de) * 1998-05-13 1999-07-22 Bosch Gmbh Robert Vorrichtung zur Erfassung von Drehmomenten
WO2001027638A1 (fr) 1999-10-08 2001-04-19 Fast Technology Ag. Accelerometre
DE60007641T2 (de) 1999-08-12 2004-11-11 Fast Technology Ag Magnetisiertes wandlerelement fuer einen drehmoment- oder kraftsensor
DE60105794T2 (de) 2000-03-28 2006-02-09 Fast Technology Ag Magnetischer kraft/drehmoment-sensor
WO2006053244A2 (fr) 2004-11-12 2006-05-18 Stoneridge Control Devices, Inc. Ensemble capteur de couple
WO2006083736A1 (fr) * 2005-02-01 2006-08-10 The Timken Company Roulement avec capteurs montes dans la cage
WO2007048143A2 (fr) 2005-10-21 2007-04-26 Stoneridge Control Devices, Inc. Systeme de capteur comportant une tige magnetisee
DE60309678T2 (de) 2002-02-22 2007-09-20 Abas Inc., Chicago Gepulste drehmoment, kraft oder allgemeine messung mit spule und magnetfeldsensor (tangential, umfang)
DE69936138T2 (de) 1998-04-23 2008-02-07 Abas Inc., Chicago Magnetischer kraftsensor und verfahren zu dessen herstellung
DE102007017705A1 (de) * 2007-04-14 2008-10-16 Schaeffler Kg Wellenanordnung mit einem Wälzlager
DE69838904T2 (de) 1997-10-21 2009-01-08 Magna-Lastic Devices, Inc., Carthage Manschettenloser drehmomentsensor mit kreisförmiger magnetisierung und dazugehöriges messverfahren
WO2011085400A1 (fr) 2010-01-11 2011-07-14 Magcanica, Inc. Capteurs de force magnétoélastique, transducteurs, procédés et systèmes d'évaluation de la contrainte de flexion
EP2447198A1 (fr) * 2010-10-27 2012-05-02 Abb Ab Agencement de rouleau
US8191431B2 (en) 2005-10-21 2012-06-05 Stoneridge Control Devices, Inc. Sensor system including a magnetized shaft

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994004896A1 (fr) 1992-08-24 1994-03-03 Kubota Corporation Procede de fabrication d'un arbre a capteur de couple du type magnetostrictif, et arbre produit selon ce procede
DE102008056302A1 (de) * 2008-11-07 2010-05-12 Thyssenkrupp Egm Gmbh Vorrichtung zur Übertragung von Drehmomenten
DE102012004119B4 (de) * 2012-03-01 2022-02-03 Ncte Ag Beschichtung von kraftübertragenden Bauteilen mit magnetostriktiven Werkstoffen

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69222588T2 (de) 1991-07-29 1998-05-20 Magnetoelastic Devices Inc Berührungsfreier ringförmig magnetisierter Drehmomentsensor, Verfahren und Wandlerring
EP2216702A1 (fr) 1997-10-21 2010-08-11 Magna-Lastic Devices, Inc. Transducteur à couple magnétisé circulairement sans collerette et procédé pour mesurer le couple l'utilisant
DE69838904T2 (de) 1997-10-21 2009-01-08 Magna-Lastic Devices, Inc., Carthage Manschettenloser drehmomentsensor mit kreisförmiger magnetisierung und dazugehöriges messverfahren
DE69936138T2 (de) 1998-04-23 2008-02-07 Abas Inc., Chicago Magnetischer kraftsensor und verfahren zu dessen herstellung
DE19821381A1 (de) * 1998-05-13 1999-07-22 Bosch Gmbh Robert Vorrichtung zur Erfassung von Drehmomenten
DE60008543T2 (de) 1999-08-12 2004-12-16 Fast Technology Ag Magnetisiertes wandlerelement fuer einen drehmoment- oder kraftsensor
DE60007641T2 (de) 1999-08-12 2004-11-11 Fast Technology Ag Magnetisiertes wandlerelement fuer einen drehmoment- oder kraftsensor
WO2001027638A1 (fr) 1999-10-08 2001-04-19 Fast Technology Ag. Accelerometre
DE60105794T2 (de) 2000-03-28 2006-02-09 Fast Technology Ag Magnetischer kraft/drehmoment-sensor
DE60309678T2 (de) 2002-02-22 2007-09-20 Abas Inc., Chicago Gepulste drehmoment, kraft oder allgemeine messung mit spule und magnetfeldsensor (tangential, umfang)
WO2006053244A2 (fr) 2004-11-12 2006-05-18 Stoneridge Control Devices, Inc. Ensemble capteur de couple
WO2006083736A1 (fr) * 2005-02-01 2006-08-10 The Timken Company Roulement avec capteurs montes dans la cage
WO2007048143A2 (fr) 2005-10-21 2007-04-26 Stoneridge Control Devices, Inc. Systeme de capteur comportant une tige magnetisee
US8191431B2 (en) 2005-10-21 2012-06-05 Stoneridge Control Devices, Inc. Sensor system including a magnetized shaft
DE102007017705A1 (de) * 2007-04-14 2008-10-16 Schaeffler Kg Wellenanordnung mit einem Wälzlager
WO2011085400A1 (fr) 2010-01-11 2011-07-14 Magcanica, Inc. Capteurs de force magnétoélastique, transducteurs, procédés et systèmes d'évaluation de la contrainte de flexion
EP2447198A1 (fr) * 2010-10-27 2012-05-02 Abb Ab Agencement de rouleau

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016200144B3 (de) * 2016-01-08 2017-06-29 Schaeffler Technologies AG & Co. KG Verfahren und Anordnung zum Messen einer Kraft oder eines Momentes an einem eine Öffnung aufweisenden Maschinenelement
DE102016200145B3 (de) * 2016-01-08 2017-06-29 Schaeffler Technologies AG & Co. KG Verfahren zum Bereitstellen einer Anordnung zum Messen einer Kraft oder eines Momentes
WO2017118451A1 (fr) 2016-01-08 2017-07-13 Schaeffler Technologies AG & Co. KG Procédé et ensemble permettant de mesurer une force ou un moment sur un organe de machine pourvu d'une ouverture
WO2017118450A1 (fr) 2016-01-08 2017-07-13 Schaeffler Technologies AG & Co. KG Procédé permettant d'obtenir un ensemble pour mesurer une force ou un moment

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