EP2422927A2 - Measuring device - Google Patents
Measuring device Download PDFInfo
- Publication number
- EP2422927A2 EP2422927A2 EP11005887A EP11005887A EP2422927A2 EP 2422927 A2 EP2422927 A2 EP 2422927A2 EP 11005887 A EP11005887 A EP 11005887A EP 11005887 A EP11005887 A EP 11005887A EP 2422927 A2 EP2422927 A2 EP 2422927A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- measuring
- measuring head
- measuring device
- angle sensor
- angular position
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/42—Single-purpose machines or devices for grinding crankshafts or crankpins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/02—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent
- B24B49/04—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent involving measurement of the workpiece at the place of grinding during grinding operation
- B24B49/045—Specially adapted gauging instruments
Definitions
- the invention relates to a measuring device referred to in the preamble of claim 1, in particular for in-process measurement of specimens during a machining operation on a processing machine, in particular a grinding machine.
- crankshafts In the manufacture of crankshafts, it is necessary to grind the crankpins of the crankshaft to size on a grinding machine. In order to ensure that the grinding process is terminated as soon as a desired level is reached, it is necessary to continuously check the crank pin during the machining process, in particular with regard to its diameter and roundness, during an in-process measuring process.
- EP-A-0859689 discloses a corresponding measuring device.
- a measuring device of the type in question is known, which is used for in-process measurement of crankpins during a grinding operation on a grinding machine.
- the known measuring device has a measuring head, which is movable relative to a main body of the device between a rest position and a measuring position in which the measuring head is in Meßcard with the test object.
- the known measuring device of the measuring head via a linkage about a first pivot axis pivotally connected to a main body of the measuring device.
- the known measuring device further comprises means for pivoting the measuring head in the measuring position or from the measuring position.
- the measuring head is pivoted into the measuring position by the means provided for this purpose, in which the measuring head, for example by means of a measuring prism, comes into contact with the crank pin to be measured.
- the crank pin performs an orbital rotation about the axis of rotation of the crankshaft.
- the grinding wheel remains in contact with the crank pin and is mounted for this purpose to be movable radially to the axis of rotation of the crankshaft.
- the measuring head retraces the movements of the crankpin.
- the main body of the measuring device is connected to a main body of the grinding machine, so that the measuring device is moved synchronously with the grinding wheel of the grinding machine during the grinding process in the radial direction of the crankshaft.
- EP 1 063 052 B1 a measuring device is known in which at a connection point at which the measuring head is connected via a linkage to the main body of the measuring device, a rotary encoder is provided.
- the invention has for its object to provide a measuring device referred to in the preamble of claim 1, in which the risk of measurement inaccuracies is reduced.
- the invention initially assumes that the measuring head usually during the measuring his
- Angular position relative to the test specimen changes, wherein the change in the angular position is an oscillatory movement corresponding to the kinematics, for example, a linkage, via which the measuring head is connected to the main body of the measuring device.
- measured values which are equidistantly measured in the circumferential direction are assigned to equidistant points of the test object by a probe of the measuring head during a rotation of the test object about its axis of rotation.
- measurements measured equidistantly by the measuring probe do not correspond circumferentially to equidistant circumferential points of the test object, but are displaced circumferentially in accordance with the oscillating angular position of the measuring head.
- the invention is based on the idea to avoid measurement errors that arise in connection with this correction.
- the rotational position of a crankshaft is detected and the correction of the angular position determined by calculation based on the predetermined by the mechanical conditions kinematics of the measuring head. This correction is based on the assumption that every rotational position of the crankshaft uniquely associated with an angular position of the measuring head.
- the invention is detached from the idea of performing the correction by calculation. Rather, it is based on the idea of detecting angular position changes of the measuring head relative to the test object by means of an angle sensor adapted thereto and assigned to the measuring head. Accordingly, the invention provides that the measuring head is associated with an angle sensor for detecting the angular position of the measuring head, in particular angular position changes of the measuring head relative to the DUT, during a measuring operation.
- angular position changes of the measuring head are detected by sensors.
- the sensory detected angular position changes can be incorporated with high accuracy in the correction of the measured values or their assignment to peripheral locations of the test specimen.
- the measuring device has the particular advantage that changes in the kinematics of the measuring head, resulting for example from wear of the measuring head connected to the main body of the measuring device linkage or occur in a conversion of the measuring device to adapt to a crankshaft with other dimensions, the correction Do not affect the assignment of the measured values. In this way, the accuracy in the correction of the assignment of the measured values can be increased.
- Another advantage of the invention is that it can be used without modification when a component of a grinding machine to which the measuring device is attached moves during the measuring process. Corresponding movements of the device carrying the measuring device and thus the measuring device can be scheduled and desired. However, the movements may also be random and undesirable. Regardless of which cause corresponding movements, they do not affect the measurement accuracy of the measuring device according to the invention, because angular position changes due to the use of a separate and the measuring head associated sensor are detected regardless of their cause. In this way, the flexibility of the measuring device according to the invention is increased with respect to the use in cooperation with a processing machine.
- the evaluation of the measured values recorded by a measuring probe of the measuring head takes place in that first the angular position change of the measuring head relative to the test object is compensated or corrected during the measuring process. Subsequently, the compensated or corrected measured values can be further processed for the reconstruction of, for example, the correction of the test object.
- the angle sensor which is assigned to the measuring head according to the invention may be a machine-sensor-free operating angle sensor.
- a machine-reference-free operating angle sensor an angle sensor understood that detects the angular position or angular position changes of the measuring head independently of a reference, which is defined by the measuring device or the machine tool.
- those sensors whose operating principle is based on interaction with a magnetic field or the gravitational field of the earth are regarded as machine-angle-free operating angle sensors.
- a sensor is considered as he from the prior art is known and sensed with the rotations of the specimen relative to the grinding machine, to calculate therefrom and a known kinematics of the measuring head during the measuring process starting angular position changes of the measuring head.
- the measuring head is assigned a single angle sensor. If required or desired according to the respective requirements, at least two angle sensors can also be assigned to the measuring head.
- the sensor principle of the inventively provided angle sensor can be selected according to the respective requirements and conditions within wide limits, as long as it is ensured that the angular position or angular position changes of the measuring head can be determined relative to the DUT during the measuring process with an accuracy corresponding to the application.
- angle sensor is a tilt sensor.
- Corresponding inclination sensors as a result represent an angle measuring device with respect to the earth's surface and measure the deviation from the horizontal or vertical. Reference here is the gravitational field of the earth, so that a corresponding sensor works machine reference free.
- the angle sensor is an acceleration sensor.
- An acceleration sensor measures the acceleration, for example, by determining the force of inertia acting on a test mass.
- the static or dynamic acceleration can be used for this purpose.
- corresponding acceleration sensors which are also known as accelerometers, B-knife and G-sensor are called, as relatively small, versatile and inexpensive standard components are available.
- other inertial sensors may optionally be used instead of acceleration sensors.
- the angle sensor has a fiber gyro, which is also referred to as a fiber optic gyroscope or IFOG (Interferometer Fiber-Optic Gyroscope).
- a fiber gyro is also referred to as a fiber optic gyroscope or IFOG (Interferometer Fiber-Optic Gyroscope).
- the working principle of a fiber gyro is the interference of two light beams circulating in opposite directions in a wound glass fiber.
- a fiber gyroscope is based on the principle of the Sagnac interferometer.
- Corresponding fiber gyros are also available as relatively inexpensive components. Since they do not operate completely drift-free during operation, a calibration is required to ensure that the measurement results recorded during a measurement process are not corrupted by drift effects.
- a laser gyroscope can also be used whose function is also based on the Sagnac effect.
- the mode of operation of a fiber gyro or laser gyro in detail is generally known to the person skilled in the art and will therefore not be explained in more detail here.
- a modified with respect to the operating principle of the sensor further embodiment provides that the angle sensor is a magnetic field sensor.
- the operating principle of such a magnetic field sensor may be, for example, that the position of a permanent magnet is detected, which moves in a magnetic field generated by a coil.
- the construction of corresponding magnetic field sensors is generally known to the person skilled in the art and will therefore not be explained in any more detail here.
- an optical sensor arrangement can be used with which the angular position or angular position changes of the measuring head are optically detected.
- the arrangement of the angle sensor or the angle sensors can be selected according to the respective requirements within wide limits.
- An advantageous embodiment provides so far that the angle sensor is arranged on the measuring device.
- the angle sensor is arranged on the measuring head or a rigid or almost rigidly connected to the measuring head part of a linkage, via which the measuring head is connected to the main body of the measuring device.
- the angle sensor is directly connected to the measuring head or a rigidly connected part of the linkage.
- the angle sensor is connected to an evaluation device which determines the angular position or angular position changes of the measuring head 12 relative to the DUT as a function of at least one output signal of the angle sensor.
- a sensor is connected, which determines the respective rotational position of a rotating during the measurement process around a rotation axis specimen. If the test object is, for example, a crankshaft which rotates about a rotation axis during a grinding process, then the respectively instantaneous rotational position of the crankshaft can be sensed by means of a corresponding rotational position sensor. A corresponding signal can then be transmitted to the evaluation device which, in dependence on these output signals and the output signals of the angle sensor, produces an unambiguous assignment of measured values, which are recorded by means of a probe of the measuring head, to corresponding peripheral locations of the crankshaft.
- Fig. 1 shows an embodiment of a measuring device 2 according to the invention, which is used for in-process measurement of specimens during a machining operation on a grinding machine 4.
- the grinding machine 4 which is only partially shown for reasons of simplicity, has a rotatable about a machine-fixed axis of rotation 6 grinding wheel 8, which serves for processing a test specimen, which is formed in this embodiment by a crank pin 10 of a crankshaft.
- the measuring device 2 has a measuring head 12, which is connected via a linkage 14 about a first pivot axis 16 pivotally connected to a base body 18 of the measuring device 2.
- the measuring device 2 further comprises means for pivoting the measuring head 12 in and out of the measuring position or from the measuring position, which will be explained in more detail below.
- the linkage 18 has a first linkage element 20 and a second linkage element 22, which are arranged pivotably about the first pivot axis 16.
- a third linkage element 26 is pivotably connected about a second pivot axis 24, with its fourth end remote from a third pivot axis 28 pivotally connected to a fourth linkage element remote from the third pivot axis 24 Swivel axis 28 is pivotally connected to the first linkage member 20 about a fourth pivot axis.
- first linkage member 20 and the third linkage member 26 are arranged non-parallel to each other, wherein the distance between the first pivot axis 16 and the second pivot axis 24 is smaller than the distance between the third pivot axis 28 and the fourth pivot axis 32nd
- the second linkage member 22 has a lever arm 34, such that the lever arm 34 together with the linkage member 22 forms a two-armed angle lever whose function will be explained in more detail below.
- the measuring head 12 is arranged in this embodiment on a holding arm 35, which is connected to the fourth linkage member 30 which is extended beyond the fourth pivot axis 32 out.
- the connection between the support arm 34 and the fourth linkage member 30 is rigid. How out Fig. 2A it can be seen, in the illustrated embodiment, a free end of the holding arm 34 holding the measuring head 12 angled towards the first pivot axis 16, wherein a part of the holding arm 34 connected to the fourth link element 40 forms an angle of greater than 90 ° with the fourth link element 30.
- the measuring head 12 a linearly deflectable probe 36, which in Fig. 2a is indicated by a dashed line.
- the measuring head 12 also has a measuring prism 38 in the illustrated embodiment.
- the manner in which roundness and / or dimensional measurements are carried out on a test specimen, in particular a crank pin of a crankshaft or another cylindrical component, by means of an arrangement of a linearly deflectable probe 36 and a measuring prism 38 is well known to the person skilled in the art and therefore becomes not explained here.
- the measuring device 2 further comprises means for pivoting in and out of the measuring head 12, which engage the linkage 14 and based on Fig. 1 be explained in more detail.
- the Einschwenkvoretti 40 spring means which in this embodiment, designed as a compression spring spring 44, the measuring head 12 via the linkage 14 in a in Fig. 1 symbolized by an arrow 46 Einschwenkraum.
- the spring 44 is formed in this embodiment as a compression spring and is supported at its one end on the base body 18 of the measuring device 2 and at its other end on the lever arm 34, so that the spring 44, the lever arm 34 in Fig. 1 counterclockwise and so that the measuring head 12 is acted upon by means of the linkage 14 in the pivoting 46 and seeks to move.
- the Ausschwenkvoretti 42 has in this embodiment, a hydraulic cylinder 48, the piston is connected at its free end to the base body 18 of the measuring device 2. With the piston rod 50 of the hydraulic cylinder 48 formed in this embodiment as a toggle lever assembly 42 is connected, the piston rod 50 facing away from the free end to the first pivot axis 16 is eccentrically connected to a one-armed lever 54 which is coaxially mounted to the pivot axis 16.
- the lever 54 has at its free end in the plane extending into a pin 56 which acts on the first linkage element 20 loose, so that the lever 54 when moving in a Ausschwenkoplasty, which corresponds to a clockwise movement in the drawing, as a driver for the first linkage element 20 acts.
- sensor means For sensing the respective position of the measuring head 12 sensor means are provided, which are in operative connection with control means for controlling the Einschwenkvortechnisch 40 and the Ausschwenkvortechnisch 42.
- the evaluation of measured values which are recorded by means of the measuring probe 36 during a measuring process is carried out by means of an evaluation device of an evaluation computer.
- the manner in which corresponding measured values are evaluated is generally known to the person skilled in the art and will therefore not be explained in more detail here.
- the measuring head 12 is assigned an angle sensor 55 for detecting the angular position of the measuring head 12 and in particular angular position changes of the measuring head 12 relative to the test piece (crank pin 10).
- the angle sensor 55 is arranged on the measuring device 2.
- the angle sensor 55 is connected to the holding arm 35 and thus to a part of the linkage 18 which is rigidly or almost rigidly connected to the measuring head 12.
- the angle sensor 55 is a machine-reference-free operating sensor, which is formed in this embodiment by an acceleration sensor, which determines the static acceleration of the measuring head 12 based on the gravitational acceleration.
- the inclination sensor can be based for example on a commercially available so-called accelerometer, as it is available, for example, under the name ADXL 322 from the company Analog Devices (www.analog.com).
- a corresponding electronic circuit determines biaxial in the X and Y direction, the static acceleration.
- the respective angular position of the measuring head 12 and thus also angular position changes can be determined either by evaluating the output signal for only one measuring direction, for example via an arcsine relationship or via evaluation of both measuring directions via an arctangent relationship.
- the angular position and thus angular position changes of the measuring head 12 are not determined by a defined by the measuring device 2 or the grinding reference affect changes in the kinematics, resulting for example from wear of components of the linkage 18, the measuring or Evaluation accuracy not. Likewise, it does not affect the evaluation when a component of the grinding machine 4, on which the Measuring device 2 according to the invention is arranged, moved during the grinding process.
- Reference for the angle measurement is thus according to the invention in the illustrated embodiment exclusively the gravitational field of the earth. If the machine bed of the grinding machine 4 moves during the grinding process, for example because of an elastic bearing, then corresponding movements can be measured via a second angle sensor. During the evaluation, the angle measured by the angle sensor 55 can be corrected correspondingly by simple subtraction.
- Fig. 2B shows the measuring head 12 in a position between the rest position and the measuring position.
- Fig. 2C shows Angular position of the lever arm 34 runs on a stop 56, wherein upon emergence of the lever arm 34 on the stop 56, a control signal is transmitted to the control means, due to which the hydraulic cylinder 48 is stopped.
- Fig. 2C shows the measuring head 12 in a search position in which it is not yet in contact with the crank pin 10.
- Fig. 2D shows the measuring head 12 in its measuring position in which it is in contact with the crank pin 10.
- Fig. 2E corresponds to Fig. 2C , wherein the measuring head 12 is shown in its search position with respect to a crank pin 10 'of larger diameter.
- Fig. 3 shows the measuring device 2 in the search position of the measuring head 12, which also in Fig. 2C is shown.
- Fig. 1 With Fig. 3 results in the lever 54 by means of the lever assembly 42 during extension of the piston rod 50 of the hydraulic cylinder 48 in Fig. 1 given away in the counterclockwise direction until the in Fig. 3 shown angular position of the lever 54 is reached. How out Fig.
- the roller 56 is spaced in the circumferential direction of the first axis of rotation 16 to the first link member 20, so that the first linkage member 20 and thus the entire linkage 14 under the action of the weight of the measuring head 12 including the holding arm 34 and the the spring 44 can exert pressure force exerted freely.
- the measuring position cf. Fig. 2D
- the measuring head 12 abuts on the crank pin 10, wherein the measuring head traces orbital rotation of the crank pin 10 about the crankshaft during the grinding process.
- the base body 18 of the measuring device 2 is fixedly connected to a holder of the grinding wheel 8, so that the measuring device. 2 translational movements of the grinding wheel 8 in the radial direction of the axis of rotation 6 follows.
- the measuring probe 36 receives measured values, by means of which the roundness and / or the diameter of the crank pin can be assessed in the evaluation computer 36 downstream from the evaluation computer. For example, if a certain degree of diameter is reached, the grinding wheel 8 is disengaged from the crankpin 10.
- the control device controls the hydraulic cylinder 48 such that its piston rod 50 in Fig. 3 moved to the left.
- the lever 54 by means of the lever assembly 42 in Fig. 3 pivoted clockwise.
- the roller 56 is spaced in the circumferential direction of the first pivot axis 16 to the first link member 20, the measuring head 12 initially remains in the measuring position. If the roller 56 in a further pivoting of the lever 54 in Fig.
- the measuring head moves in the circumferential direction of the crank pin 10 with an angular stroke, which is approximately -7 ° and + 5 °, ie a total of 12 ° in the illustrated embodiment.
- FIGS. 2A to 2E show a structurally slightly modified variant of the embodiment according to Fig. 1 and Fig. 3 However, with respect to the basic principle according to the invention with the embodiment according to Fig. 1 and Fig. 3 matches.
- the orbital rotations of the crankpin 10 about the axis of rotation of the crankshaft are detected by means of a rotary slide sensor 57 which is associated with the axis of rotation of the crankshaft.
- Fig. 4 the evaluation device is shown schematically and designated by the reference numeral 58.
- the probe 36 is in Fig. 4 also shown schematically.
- the angular position of the measuring head 12 changes relative to the crank pin 10, wherein the associated angular position changes are detected via the angular position sensor 53, the output signals of the evaluation device 58 are supplied.
- the output signals of the rotary slide sensor 57 which is associated with the axis of rotation of the crankshaft, are likewise supplied to the evaluation device 58, as in FIG Fig. 4 shown.
- the evaluation device 58 corrects the assignment of the time-equidistantly recorded measured values of the measuring probe 60 in such a way that these measured values are assigned to the circumferential points of the crank pin 10 in the correct position.
- the accuracy of the correction is no longer dependent on the extent to which the predetermined by the linkage 18 kinematics of the measuring head 12 during the measurement corresponds to an assumed kinematics.
- a deviation of the actual kinematics of the assumed kinematics, for example due to wear of components of the linkage 18, this correction and thus the measurement accuracy does not affect.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
Description
Die Erfindung betrifft eine Meßvorrichtung der im Oberbegriff des Anspruchs 1 genannten Art, insbesondere zur Inprozeß-Messung an Prüflingen während eines Bearbeitungsvorganges an einer Bearbeitungsmaschine, insbesondere einer Schleifmaschine.The invention relates to a measuring device referred to in the preamble of claim 1, in particular for in-process measurement of specimens during a machining operation on a processing machine, in particular a grinding machine.
Bei der Herstellung von Kurbelwellen ist es erforderlich, die Kurbelzapfen der Kurbelwelle auf einer Schleifmaschine auf Maß zu schleifen. Um sicherzustellen, daß der Schleifvorgang beendet wird, sobald ein gewünschtes Maß erreicht ist, ist es erforderlich, den Kurbelzapfen im Rahmen eines Inprozeß-Meßverfahrens während des Bearbeitungsvorganges fortlaufend zu prüfen, insbesondere hinsichtlich seines Durchmessers und seiner Rundheit.
Durch
Durch
Der Erfindung liegt die Aufgabe zugrunde, eine Meßvorrichtung der im Oberbegriff des Anspruchs 1 genannten Art anzugeben, bei der das Risiko von Meßungenauigkeiten verringert ist.The invention has for its object to provide a measuring device referred to in the preamble of claim 1, in which the risk of measurement inaccuracies is reduced.
Diese Aufgabe wird durch die im Anspruch 1 angegebene Erfindung gelöst.This object is achieved by the invention defined in claim 1.
Die Erfindung geht zunächst davon aus, daß der Meßkopf in der Regel während des Meßvorganges seineThe invention initially assumes that the measuring head usually during the measuring his
Winkellage relativ zu dem Prüfling, beispielsweise einem Kurbelzapfen einer Kurbelwelle, ändert, wobei die Änderung der Winkellage eine Oszillationsbewegung entsprechend der Kinematik beispielsweise eines Gestänges ist, über das der Meßkopf mit dem Grundkörper der Meßvorrichtung verbunden ist.Angular position relative to the test specimen, for example, a crank pin of a crankshaft, changes, wherein the change in the angular position is an oscillatory movement corresponding to the kinematics, for example, a linkage, via which the measuring head is connected to the main body of the measuring device.
Hiervon ausgenommen sind lediglich Meßvorrichtungen, bei denen das Gestänge so gestaltet ist, daß sich die Winkellage des Meßkopfes während des Meßvorganges relativ zu dem Prüfling nicht ändert. In diesem Fall sind von einem Meßtaster des Meßkopfes während einer Drehung des Prüflings um seine Drehachse zeitlich äquidistant aufgenommene Meßwerte in Umfangsrichtung äquidistanten Stellen des Prüflings zugeordnet.Excluded are only measuring devices in which the linkage is designed so that the angular position of the measuring head does not change during the measuring process relative to the specimen. In this case, measured values which are equidistantly measured in the circumferential direction are assigned to equidistant points of the test object by a probe of the measuring head during a rotation of the test object about its axis of rotation.
Ändert sich demgegenüber die Winkellage des Meßkopfes relativ zu dem Prüfling, was in der Regel der Fall ist, so entsprechen beispielsweise von dem Meßtaster zeitlich äquidistant aufgenommene Meßwerte nicht in Umfangsrichtung äquidistanten Umfangsstellen des Prüflings, sondern sind entsprechend der oszillierenden Winkellage des Meßkopfes in Umfangsrichtung verschoben.On the other hand, if the angular position of the measuring head changes relative to the test object, which is generally the case, measurements measured equidistantly by the measuring probe do not correspond circumferentially to equidistant circumferential points of the test object, but are displaced circumferentially in accordance with the oscillating angular position of the measuring head.
Um beispielweise die Kontur des Prüflings zu ermitteln, ist es erforderlich, die Meßwerte so zu korrigieren, daß die korrigierten Meßwerte äquidistanten Umfangsstellen des Prüflings entsprechen.In order to determine, for example, the contour of the test object, it is necessary to correct the measured values so that the corrected measured values correspond to equidistant circumferential points of the test object.
Der Erfindung liegt der Gedanke zugrunde, Meßfehler zu vermeiden, die sich im Zusammenhang mit dieser Korrektur ergeben.The invention is based on the idea to avoid measurement errors that arise in connection with this correction.
Bei der aus dem Stand der Technik bekannten Vorrichtung wird die Drehlage einer Kurbelwelle erfaßt und die Korrektur der Winkellage rechnerisch anhand der durch die mechanischen Gegebenheiten vorgegebenen Kinematik des Meßkopfes ermittelt. Diese Korrektur beruht auf der Annahme, daß jeder Drehlage der Kurbelwelle eineindeutig eine Winkellage des Meßkopfes zugeordnet ist.In the device known from the prior art, the rotational position of a crankshaft is detected and the correction of the angular position determined by calculation based on the predetermined by the mechanical conditions kinematics of the measuring head. This correction is based on the assumption that every rotational position of the crankshaft uniquely associated with an angular position of the measuring head.
Die Erfindung löst sich von dem Gedanken, die Korrektur rechnerisch auszuführen. Ihr liegt vielmehr der Gedanke zugrunde, Winkellageänderungen des Meßkopfes relativ zu dem Prüfling mittels eines hieran angepaßten und dem Meßkopf zugeordneten Winkelsensors zu erfassen. Dementsprechend sieht die Erfindung vor, daß dem Meßkopf ein Winkelsensor zugeordnet ist zur Erfassung der Winkellage des Meßkopfes, insbesondere von Winkellageänderungen des Meßkopfes relativ zu dem Prüfling, während eines Meßvorganges.The invention is detached from the idea of performing the correction by calculation. Rather, it is based on the idea of detecting angular position changes of the measuring head relative to the test object by means of an angle sensor adapted thereto and assigned to the measuring head. Accordingly, the invention provides that the measuring head is associated with an angle sensor for detecting the angular position of the measuring head, in particular angular position changes of the measuring head relative to the DUT, during a measuring operation.
Auf diese Weise werden insbesondere Winkellageänderungen des Meßkopfes sensorisch erfaßt. Die sensorisch erfaßten Winkellageänderungen können mit hoher Genauigkeit in die Korrektur der Meßwerte bzw. ihrer Zuordnung zu Umfangsstellen des Prüflings einbezogen werden.In this way, in particular angular position changes of the measuring head are detected by sensors. The sensory detected angular position changes can be incorporated with high accuracy in the correction of the measured values or their assignment to peripheral locations of the test specimen.
Die erfindungsgemäße Meßvorrichtung hat insbesondere den Vorteil, daß Änderungen der Kinematik des Meßkopfes, die beispielsweise von einem Verschleiß eines den Meßkopf mit dem Grundkörper der Meßvorrichtung verbundenen Gestänges herrühren oder auch bei einem Umbau der Meßvorrichtung zur Anpassung an eine Kurbelwelle mit anderen Abmessungen auftreten, die Korrektur der Zuordnung der Meßwerte nicht beeinträchtigen. Auf diese Weise kann die Genauigkeit bei der Korrektur der Zuordnung der Meßwerte erhöht werden.The measuring device according to the invention has the particular advantage that changes in the kinematics of the measuring head, resulting for example from wear of the measuring head connected to the main body of the measuring device linkage or occur in a conversion of the measuring device to adapt to a crankshaft with other dimensions, the correction Do not affect the assignment of the measured values. In this way, the accuracy in the correction of the assignment of the measured values can be increased.
Ein weiterer Vorteil der Erfindung besteht darin, daß sie ohne Modifikation verwendet werden kann, wenn sich ein Bauteil einer Schleifmaschine, an dem die Meßvorrichtung befestigt ist, während des Meßvorganges bewegt. Entsprechende Bewegungen des die Meßvorrichtung tragenden Bauteiles und damit der Meßvorrichtung können planmäßig und erwünscht sein. Die Bewegungen können jedoch auch zufällig und unerwünscht sein. Unabhängig davon, welche Ursache entsprechende Bewegungen haben, beeinflussen sie die Meßgenauigkeit der erfindungsgemäßen Meßvorrichtung nicht, weil Winkellageänderungen aufgrund der Verwendung eines eigenen und dem Meßkopf zugeordneten Sensors unabhängig von ihrer Ursache erfaßt werden. Auf diese Weise ist die Flexibilität der erfindungsgemäßen Meßvorrichtung im Hinblick auf den Einsatz im Zusammenwirken mit einer Bearbeitungsmaschine erhöht.Another advantage of the invention is that it can be used without modification when a component of a grinding machine to which the measuring device is attached moves during the measuring process. Corresponding movements of the device carrying the measuring device and thus the measuring device can be scheduled and desired. However, the movements may also be random and undesirable. Regardless of which cause corresponding movements, they do not affect the measurement accuracy of the measuring device according to the invention, because angular position changes due to the use of a separate and the measuring head associated sensor are detected regardless of their cause. In this way, the flexibility of the measuring device according to the invention is increased with respect to the use in cooperation with a processing machine.
Erfindungsgemäß vollzieht sich die Auswertung der von einem Meßtaster des Meßkopfes aufgenommenen Meßwerte dadurch, daß zunächst die Winkellagenänderung des Meßkopfes relativ zu dem Prüfling während des Meßvorganges kompensiert bzw. korrigiert wird. Daran anschließend können die kompensierten bzw. korrigierten Meßwerte zur Rekonstruktion beispielsweise der Korrektur des Prüflings weiterverarbeitet werden.According to the invention, the evaluation of the measured values recorded by a measuring probe of the measuring head takes place in that first the angular position change of the measuring head relative to the test object is compensated or corrected during the measuring process. Subsequently, the compensated or corrected measured values can be further processed for the reconstruction of, for example, the correction of the test object.
Insbesondere kann es sich bei dem Winkelsensor, der erfindungsgemäß dem Meßkopf zugeordnet ist, um einen maschinenreferenzfrei arbeitenden Winkelsensor handeln. Unter einer maschinenreferenzfrei arbeitenden Winkelsensor wird erfindungsgemäß ein Winkelsensor verstanden, der die Winkellage bzw. Winkellageänderungen des Meßkopfes unabhängig von einer Referenz erfaßt, die durch die Meßvorrichtung oder die Bearbeitungsmaschine definiert ist. Dementsprechend werden als maschinenreferenzfrei arbeitende Winkelsensoren beispielsweise solche Sensoren angesehen, deren Funktionsprinzip auf einem Zusammenwirken mit einem Magnetfeld oder dem Gravitationsfeld der Erde beruhen. Demgegenüber wird beispielsweise als nicht maschinenreferenzfrei arbeitend ein Sensor angesehen, wie er aus dem Stand der Technik bekannt ist und mit dem Drehungen des Prüflings relativ zu der Schleifmaschine abgefühlt werden, um hiervon sowie einer bekannten Kinematik des Meßkopfes während des Meßvorganges ausgehend Winkellageänderungen des Meßkopfes zu berechnen.In particular, the angle sensor which is assigned to the measuring head according to the invention may be a machine-sensor-free operating angle sensor. Under a machine-reference-free operating angle sensor according to the invention an angle sensor understood that detects the angular position or angular position changes of the measuring head independently of a reference, which is defined by the measuring device or the machine tool. Correspondingly, for example, those sensors whose operating principle is based on interaction with a magnetic field or the gravitational field of the earth are regarded as machine-angle-free operating angle sensors. In contrast, for example, as a non-machine reference working a sensor is considered as he from the prior art is known and sensed with the rotations of the specimen relative to the grinding machine, to calculate therefrom and a known kinematics of the measuring head during the measuring process starting angular position changes of the measuring head.
Grundsätzlich ist es erfindungsgemäß ausreichend, wenn dem Meßkopf ein einziger Winkelsensor zugeordnet ist. Falls entsprechend den jeweiligen Anforderungen erforderlich oder gewünscht, können dem Meßkopf auch wenigstens zwei Winkelsensoren zugeordnet sein.In principle, it is sufficient according to the invention if the measuring head is assigned a single angle sensor. If required or desired according to the respective requirements, at least two angle sensors can also be assigned to the measuring head.
Das Sensorprinzip des erfindungsgemäß vorgesehenen Winkelsensors ist entsprechend den jeweiligen Anforderungen und Gegebenheiten innerhalb weiter Grenzen wählbar, solange sichergestellt ist, daß die Winkellage bzw. Winkellageänderungen des Meßkopfes relativ zu dem Prüfling während des Meßvorganges mit einer der Anwendung entsprechenden Genauigkeit ermittelbar sind.The sensor principle of the inventively provided angle sensor can be selected according to the respective requirements and conditions within wide limits, as long as it is ensured that the angular position or angular position changes of the measuring head can be determined relative to the DUT during the measuring process with an accuracy corresponding to the application.
Eine vorteilhafte Weiterbildung der Erfindung sieht insoweit vor, daß der Winkelsensor ein Neigungssensor ist. Entsprechende Neigungssensoren stellen im Ergebnis ein Winkelmeßgerät mit Bezug zur Erdoberfläche dar und messen die Abweichung von der Horizontalen oder Vertikalen. Referenz ist hierbei das Gravitationsfeld der Erde, so daß ein entsprechender Sensor maschinenreferenzfrei arbeitet.An advantageous development of the invention provides insofar as the angle sensor is a tilt sensor. Corresponding inclination sensors as a result represent an angle measuring device with respect to the earth's surface and measure the deviation from the horizontal or vertical. Reference here is the gravitational field of the earth, so that a corresponding sensor works machine reference free.
Eine außerordentlich vorteilhafte Weiterbildung der Erfindung sieht vor, daß der Winkelsensor ein Beschleunigungssensor ist.Ein Beschleunigungssensor mißt die Beschleunigung beispielsweise, indem die auf eine Testmasse wirkende Trägheitskraft bestimmt wird. Erfindungsgemäß kann hierzu die statische oder dynamische Beschleunigung herangezogen werden. Ein besonderer Vorteil dieser Ausführungsform besteht darin, daß entsprechende Beschleunigungssensoren, die auch als Accelerometer, B-Messer und G-Sensor bezeichnet werden, als relativ kleine, vielseitige und kostengünstige Standardbauteile zur Verfügung stehen. Anstelle von Beschleunigungssensoren können ggf. erfindungsgemäß auch andere Inertialsensoren verwendet werden.An extraordinarily advantageous development of the invention provides that the angle sensor is an acceleration sensor. An acceleration sensor measures the acceleration, for example, by determining the force of inertia acting on a test mass. According to the invention, the static or dynamic acceleration can be used for this purpose. A particular advantage of this embodiment is that corresponding acceleration sensors, which are also known as accelerometers, B-knife and G-sensor are called, as relatively small, versatile and inexpensive standard components are available. According to the invention, other inertial sensors may optionally be used instead of acceleration sensors.
Eine andere vorteilhafte Weiterbildung der Erfindung sieht vor, daß der Winkelsensor einen Faserkreisel aufweist, der auch als faseroptischer Kreisel oder IFOG (Interferometer Fibre-Optic Gyroscope) bezeichnet wird. Das Wirkprinzip eines Faserkreisels besteht in der Interferenz zweier gegenläufig in einer aufgewickelten Glasfaser umlaufender Lichtstrahlen. Funktionsmäßig beruht ein solcher Faserkreisel auf dem Prinzip des Sagnac-Interferometers. Entsprechende Faserkreisel stehen ebenfalls als relativ kostengünstige Bauteile zur Verfügung. Da sie bei Betrieb nicht völlig driftfrei arbeiten, ist eine Kalibrierung erforderlich, um sicherzustellen, daß die während eines Meßvorganges aufgenommenen Meßergebnisse nicht durch Drifteffekte verfälscht werden. Anstelle eines Faserkreisels kann auch ein Laserkreisel verwendet werden, dessen Funktion ebenfalls auf dem Sagnac-Effekt beruht. Die Funktionsweise eines Faserkreisels oder Laserkreisels im einzelnen ist dem Fachmann allgemein bekannt und wird daher hier nicht näher erläutert.Another advantageous embodiment of the invention provides that the angle sensor has a fiber gyro, which is also referred to as a fiber optic gyroscope or IFOG (Interferometer Fiber-Optic Gyroscope). The working principle of a fiber gyro is the interference of two light beams circulating in opposite directions in a wound glass fiber. Functionally, such a fiber gyroscope is based on the principle of the Sagnac interferometer. Corresponding fiber gyros are also available as relatively inexpensive components. Since they do not operate completely drift-free during operation, a calibration is required to ensure that the measurement results recorded during a measurement process are not corrupted by drift effects. Instead of a fiber gyro, a laser gyroscope can also be used whose function is also based on the Sagnac effect. The mode of operation of a fiber gyro or laser gyro in detail is generally known to the person skilled in the art and will therefore not be explained in more detail here.
Eine hinsichtlich des Wirkprinzips des Sensors abgewandelte weitere Ausführungsform sieht vor, daß der Winkelsensor ein Magnetfeldsensor ist. Das Wirkprinzip eines solchen Magnetfeldsensors kann beispielsweise darin bestehen, daß die Lage eines Dauermagneten erfaßt wird, der sich in einem durch eine Spule erzeugten Magnetfeld bewegt. Im übrigen ist der Aufbau entsprechender Magnetfeldsensoren dem Fachmann allgemein bekannt und wird daher hier nicht näher erläutert.A modified with respect to the operating principle of the sensor further embodiment provides that the angle sensor is a magnetic field sensor. The operating principle of such a magnetic field sensor may be, for example, that the position of a permanent magnet is detected, which moves in a magnetic field generated by a coil. Moreover, the construction of corresponding magnetic field sensors is generally known to the person skilled in the art and will therefore not be explained in any more detail here.
Darüber hinaus sind erfindungsgemäß noch weitere Sensorprinzipien verwendbar. Beispielsweise kann eine optische Sensoranordnung verwendet werden, mit der die Winkellage bzw. Winkellageänderungen des Meßkopfes optisch erfaßt werden. In diesem Zusammenhang ist es beispielsweise möglich, Winkellageänderungen des Meßkopfes mit einer elektronischen Kamera zu erfassen und die Winkellageänderungen aus deren Ausgangssignal mithilfe von Alorithmen der Bildverabeitung zu ermitteln.In addition, according to the invention still further sensor principles can be used. For example, an optical sensor arrangement can be used with which the angular position or angular position changes of the measuring head are optically detected. In this context, it is possible, for example, to detect angular position changes of the measuring head with an electronic camera and to determine the angular position changes from their output signal using algorithms of the image processing.
Die Anordnung des Winkelsensors bzw. der Winkelsensoren ist entsprechend den jeweiligen Anforderunge innerhalb weiter Grenzen wählbar. Eine vorteilhafte Ausführungsform sieht insoweit vor, daß der Winkelsensor an der Meßvorrichtung angeordnet ist.The arrangement of the angle sensor or the angle sensors can be selected according to the respective requirements within wide limits. An advantageous embodiment provides so far that the angle sensor is arranged on the measuring device.
Eine außerordentlich vorteilhafte Weiterbildung der Erfindung sieht vor, daß der Winkelsensor an dem Meßkopf oder einem starr oder nahezu starr mit dem Meßkopf verbundenen Teil eines Gestänges angeordnet ist, über das der Meßkopf mit dem Grundkörper der Meßvorrichtung verbunden ist. Bei dieser Ausführungsform ist der Winkelsensor unmittelbar mit dem Meßkopf oder einem damit starr verbundenen Teil des Gestänges verbunden. Auf diese Weise ist eine größtmögliche und nicht von einem Verschleiß beispielsweise von Gelenkverbindungen eines Gestänges, das den Meßkopf mit dem Grundkörper der Meßvorrichtung verbindet, abhängige Genauigkeit bei der Erfassung von Winkellageänderungen des Meßkopfes erreicht.An extremely advantageous development of the invention provides that the angle sensor is arranged on the measuring head or a rigid or almost rigidly connected to the measuring head part of a linkage, via which the measuring head is connected to the main body of the measuring device. In this embodiment, the angle sensor is directly connected to the measuring head or a rigidly connected part of the linkage. In this way, the greatest possible and not by a wear of, for example, joints of a linkage that connects the measuring head to the main body of the measuring device, dependent accuracy in the detection of angular position changes of the measuring head is achieved.
Eine andere vorteilhafte Weiterbildung der Erfindung sieht vor, daß der Winkelsensor mit einer Auswertungseinrichtung verbunden ist, die die Winkellage bzw. Winkellageänderungen des Meßkopfes 12 relativ zu dem Prüfling in Abhängigkei von wenigstens einem Ausgangssignal des Winkelsensors ermittelt.Another advantageous development of the invention provides that the angle sensor is connected to an evaluation device which determines the angular position or angular position changes of the measuring
Eine andere vorteilhafte Weiterbildung der Erfindung sieht vor, daß mit der Auswertungseinrichtung ein Sensor verbunden ist, der die jeweilige Drehlage eines sich während des Meßvorganges um eine Drehachse drehenden Prüflings ermittelt. Handelt es sich bei dem Prüfling beispielsweise um eine Kurbelwelle, die sich während eines Schleifvorganges um eine Drehachse dreht, so kann mittels eines entsprechenden Drehlagensensors die jeweils momentane Drehlage der Kurbelwelle abgefühlt werden. Ein entsprechendes Signal kann dann der Auswertungseinrichtung übermittelt werden, die in Abhängigkeit von diesen Ausgangssignalen sowie den Ausgangssignalen des Winkelsensors eine eindeutige Zuordnung von Meßwerten, die mittels eines Meßtasters des Meßkopfes aufgenommen werden, zu entsprechenden Umfangsstellen der Kurbelwelle herstellt.Another advantageous development of the invention provides that with the evaluation device, a sensor is connected, which determines the respective rotational position of a rotating during the measurement process around a rotation axis specimen. If the test object is, for example, a crankshaft which rotates about a rotation axis during a grinding process, then the respectively instantaneous rotational position of the crankshaft can be sensed by means of a corresponding rotational position sensor. A corresponding signal can then be transmitted to the evaluation device which, in dependence on these output signals and the output signals of the angle sensor, produces an unambiguous assignment of measured values, which are recorded by means of a probe of the measuring head, to corresponding peripheral locations of the crankshaft.
Die Erfindung wird nachfolgend anhand der beigefügten, stark schematisierten Zeichnung näher erläutert, in der ein Ausführungsbeispiel einer erfindungsgemäßen Meßvorrichtung dargestellt ist. Dabei bilden alle beschriebenen, in der Zeichnung dargestellten und in den Patentansprüchen beanspruchten Merkmale für sich genommen sowie in beliebiger Kombination miteinander den Gegenstand der Erfindung, unabhängig von ihrer Zusammenfassung in den Patentansprüchen und deren Rückbezügen sowie unabhängig von ihrer Beschreibung bzw. Darstellung in der Zeichnung.The invention will be explained in more detail with reference to the attached, highly schematic drawing, in which an embodiment of a measuring device according to the invention is shown. All the features described in the drawing and claimed in the claims, taken alone and in any combination with each other form the subject of the invention, regardless of their summary in the claims and their back references and regardless of their description or representation in the drawing.
Es zeigt:
- Fig. 1
- in stark schematisierter Darstellung eine Seitenansicht eines Ausführungsbei-spieles einer erfindungsgemäßen Meßvor-richtung in einer Ruheposition des Meß-kopfes,
- Fig. 2A bis 2E
- die Meßvorrichtung gemäß
Fig. 1 in ver-schiedenen kinematischen Phasen, - Fig. 3
- in gleicher Darstellung wie
Fig. 1 das Ausführungsbeispiel gemäßFig. 1 während der Bewegung des Meßkopfes in die Meßpo-sition und - Fig. 4
- ein schematisches Blockschaltbild zur Verdeutlichung des Zusammenwirkens des erfindungsgemäßen Winkelsensors mit ei-ner Auswertungseinrichtung.
- Fig. 1
- in a highly schematic representation of a side view of a Ausführungsbei-game of a measuring device according to the invention in a rest position of the measuring head,
- Fig. 2A to 2E
- the measuring device according to
Fig. 1 in different kinematic phases, - Fig. 3
- in the same representation as
Fig. 1 the embodiment according toFig. 1 during the movement of the measuring head in the Meßpo-position and - Fig. 4
- a schematic block diagram to illustrate the interaction of the angle sensor according to the invention with an evaluation device.
Die Meßvorrichtung 2 weist einen Meßkopf 12 auf, der über ein Gestänge 14 um eine erste Schwenkachse 16 schwenkbar mit einem Grundkörper 18 der Meßvorrichtung 2 verbunden ist.The measuring
Die Meßvorrichtung 2 weist ferner Mittel zum Ein- und Ausschwenken des Meßkopfes 12 in eine Meßposition bzw. aus der Meßposition auf, die weiter unten näher erläutert werden.The measuring
Zunächst wird anhand von
Bei dem dargestellten Ausführungsbeispiel sind das erste Gestängeelement 20 und das dritte Gestängeelement 26 zueinander nichtparallel angeordnet, wobei der Abstand zwischen der ersten Schwenkachse 16 und der zweiten Schwenkachse 24 kleiner ist als der Abstand zwischen der dritten Schwenkachse 28 und der vierten Schwenkachse 32.In the illustrated embodiment, the
Bei dem dargestellten Ausführungsbeispiel weist das zweite Gestängeelement 22 einen Hebelarm 34 auf, derart, daß der Hebelarm 34 zusammen mit dem Gestängeelement 22 einen zweiarmigen Winkelhebel bildet, dessen Funktion weiter unten näher erläutert wird.In the illustrated embodiment, the
Der Meßkopf 12 ist bei diesem Ausführungsbeispiel an einem Haltearm 35 angeordnet, der mit dem vierten Gestängeelement 30, das über die vierte Schwenkachse 32 hinausgehend verlängert ist, verbunden ist. Bei dem dargestellten Ausführungsbeispiel ist die Verbindung zwischen dem Haltearm 34 und dem vierten Gestängeelement 30 starr ausgeführt. Wie aus
Bei dem dargestellten Ausführungsbeispiel weist der Meßkopf 12 einen linear auslenkbaren Meßtaster 36 auf, der in
Die Meßvorrichtung 2 weist ferner Mittel zum Ein- und Ausschwenken des Meßkopfes 12 auf, die an dem Gestänge 14 angreifen und anhand von
Bei dem dargestellten Ausführungsbeispiel weist die Einschwenkvorrichtung 40 Federmittel auf, die bei diesem Ausführungsbeispiel eine als Druckfeder ausgebildete Feder 44 auf, die den Meßkopf 12 über das Gestänge 14 in einer in
Die Ausschwenkvorrichtung 42 weist bei diesem Ausführungsbeispiel einen Hydraulikzylinder 48 auf, dessen Kolben an seinem freien Ende mit dem Grundkörper 18 der Meßvorrichtung 2 verbunden ist. Mit der Kolbenstange 50 des Hydraulikzylinders 48 ist eine bei diesem Ausführungsbeispiel als Kniehebel ausgebildete Hebelanordnung 42 verbunden, dessen der Kolbenstange 50 abgewandtes freies Ende zu der ersten Schwenkachse 16 exzentrisch mit einem einarmigen Hebel 54 verbunden ist, der zu der Schwenkachse 16 koaxial gelagert ist. Der Hebel 54 weist an seinem freien Ende einen in die Zeichenebene hinein verlaufenden Zapfen 56 auf, der das erste Gestängeelement 20 lose beaufschlagt, so daß der Hebel 54 bei einer Bewegung in einer Ausschwenkrichtung, die in der Zeichnung einer Bewegung im Uhrzeigersinn entspricht, als Mitnehmer für das erste Gestängeelement 20 fungiert.The
Zum Abfühlen der jeweiligen Position des Meßkopfes 12 sind Sensormittel vorgesehen, die mit Steuerungsmitteln zur Steuerung der Einschwenkvorrichtung 40 und der Ausschwenkvorrichtung 42 in Wirkungsverbindung stehen.For sensing the respective position of the measuring
Die Auswertung von Meßwerten, die mittels des Meßtasters 36 während eines Meßvorganges aufgenommen werden, erfolgt mittels einer Auswertungseinrichtung eines Auswertungsrechners. Die Art und Weise, wie entsprechende Meßwerte ausgewertet werden, ist dem Fachmann allgemein bekannt und wird daher hier nicht näher erläutert.The evaluation of measured values which are recorded by means of the measuring
Erfindungsgemäß ist dem Meßkopf 12 ein Winkelsensor 55 zugeordnet zur Erfassung der Winkellage des Meßkopfes 12 und insbesondere von Winkellageänderungen des Meßkopfes 12 relativ zu dem Prüfling (Kurbelzapfen 10). Bei dem dargestellten Ausführungsbeispiel ist der Winkelsensor 55 an der Meßvorrichtung 2 angeordnet. Im einzelnen ist der Winkelsensor 55 mit dem Haltearm 35 und damit mit einem mit dem Meßkopf 12 starr oder nahezu starr verbundenen Teil des Gestänges 18 verbunden.According to the invention, the measuring
Bei dem Winkelsensor 55 handelt es sich um einen maschinenreferenzfrei arbeitenden Sensor, der bei diesem Ausführungsbeispiel durch einen Beschleunigungssensor gebildet ist, der die statische Beschleunigung des Meßkopfes 12 anhand der Erdbeschleunigung ermittelt. Der Neigungssensor kann beispielsweise auf einem kommerziell erhältlichen sogenannten Accelerometer basieren, wie es beispielsweise unter der Bezeichnung ADXL 322 von der Firma Analog Devices (www.analog.com) erhältlich ist. Eine entsprechende elektronische Schaltung ermittelt zweiachsig in X- und Y-Richtung die statische Beschleunigung. Hierbei kann die jeweilige Winkellage des Meßkopfes 12 und damit auch Winkellageänderungen entweder durch Auswertung des Ausgangssignales für nur eine Meßrichtung beispielsweise über eine Arcussinus-Beziehung oder aber über Auswertung beider Meßrichtungen über eine Arcustangens-Beziehung ermittelt werden.The
Da im Ergebnis die Winkellage und damit auch Winkellageänderungen des Meßkopfes 12 nicht über eine durch die Meßvorrichtung 2 oder die Schleifmaschine definierte Referenz ermittelt werden, beeinträchtigen Änderungen der Kinematik, die sich beispielsweise aus einem Verschleiß von Bestandteilen des Gestänges 18 ergeben, die Meß- bzw. Auswertungsgenauigkeit nicht. Gleichermaßen beeinträchtigt es die Auswertung nicht, wenn sich ein Bauteil der Schleifmaschine 4, an dem die erfindungsgemäße Meßvorrichtung 2 angeordnet ist, während des Schleifvorganges bewegt.As a result, the angular position and thus angular position changes of the measuring
Referenz für die Winkelmessung ist somit erfindungsgemäß bei dem dargestellten Ausführungsbeispiel ausschließlich das Gravitationsfeld der Erde. Falls sich das Maschinenbett der Schleifmaschine 4 während des Schleifvorganges bewegt, beispielsweise aufgrund einer elastischen Lagerung, so können entsprechende Bewegungen über einen zweiten Winkelsensor gemessen werden. Bei der Auswertung kann der von dem Winkelsensor 55 gemessene Winkel durch einfache Differenzbildung entsprechend korrigiert werden.Reference for the angle measurement is thus according to the invention in the illustrated embodiment exclusively the gravitational field of the earth. If the machine bed of the grinding
Die Funktionsweise der erfindungsgemäßen Meßvorrichtung 2 ist wie folgt:
- In der in
Fig. 1 undFig. 2A dargestellten Ruheposition befindet sich der Meßkopf 12 außer Eingriffvon dem Kurbelzapfen 10. In dieser Ruhepositionist der Hydraulikzylinder 48 stillgesetzt, so daß eine Bewegung des Hebelarmes 34 inFig. 1 entgegen dem Uhrzeigersinn, diedie Druckfeder 44 zu bewirken sucht, blockiert ist.
- In the in
Fig. 1 andFig. 2A shown rest position, the measuringhead 12 is disengaged from thecrank pin 10. In this rest position, thehydraulic cylinder 48 is stopped, so that a movement of thelever arm 34 inFig. 1 counterclockwise, which seeks to cause thecompression spring 44 is blocked.
Zum Einschwenken des Meßkopfes 12 in der Einschwenkrichtung 46 wird der Hydraulikzylinder 48 derart betätigt, daß seine Kolbenstange 50 in
Beim Erreichen einer vorgegebenen, in
Während des Kontaktes des Meßkopfes 12 mit dem Kurbelzapfen 10 nimmt der Meßtaster 36 Meßwerte auf, anhand derer in dem dem Meßtaster 36 nachgeordneten Auswertungsrechner die Rundheit und/oder der Durchmesser des Kurbelzapfens beurteilt werden können. Ist beispielsweise ein bestimmtes Maß des Durchmessers erreicht, so wird die Schleifscheibe 8 außer Eingriff von dem Kurbelzapfen 10 gebracht.During the contact of the measuring
Um den Meßkopf 12 nach Beendigung der Messung entgegen der Einschwenkrichtung 46 auszuschwenken, steuert die Steuerungseinrichtung den Hydraulikzylinder 48 derart an, daß sich seine Kolbenstange 50 in
Während des Meßvorganges bewegt sich der Meßkopf in Umfangsrichtung des Kurbelzapfens 10 mit einem Winkelhub, der bei dem dargestellten Ausführungsbeispiel etwa -7° und +5°, also insgesamt 12° beträgt.During the measuring process, the measuring head moves in the circumferential direction of the
In den Figuren der Zeichnung sind gleiche bzw. sich entsprechende Bauteile mit den gleichen Bezugszeichen versehen. Die
Die Orbitaldrehungen des Kurbelzapfens 10 um die Drehachse der Kurbelwelle werden mittels eines Drehlagensensors 57 erfaßt, der der Drehachse der Kurbelwelle zugeordnet ist.The orbital rotations of the
Würde sich die Winkellage des Meßkopfes 12 relativ zu dem Kurbelzapfen 10 während des Meßvorganges nicht verändern, so entsprächen zeitlich äquidistant von dem Meßtaster 36 des Meßkopfes 12 aufgenommene Meßwerte in Umfangsrichtung äquidistanten Umfangsstellen des Kurbelzapfens 10. Aufgrund der Winkellagenänderung des Meßkopfes 12 entsprechen bei dem dargestellten Ausführungsbeispiel der Meßvorrichtung 2 die zeitlich äquidistant aufgenommenen Meßwerte nicht in Umfangsrichtung äquidistanten Umfangsstellen des Kurbelzapfens 10. Vielmehr sind sie entsprechend der Winkellagenänderung verschoben. Die Korrektur bzw. Kompensation dieser Verschiebung vollzieht sich erfindungsgemäß wie folgt:
- Ausgehend von einer Ausgangslage, in der der Meßkopf 12 relativ zu
dem Kurbelzapfen 10 eine vorbestimmte Drehlage hat, nimmt der Meßtaster der Meßkopfes 12 während der Orbitaldrehung des Kurbelzapfens 10 um die Drehachse der Kurbelwelle fortlaufend, insbesondere zeitlich äquidistant, Meßwerte auf, die einer Auswertungseinrichtung zugeführt werden.
- Starting from a starting position in which the measuring
head 12 relative to the crankpin 10 has a predetermined rotational position, the probe of the measuringhead 12 during the orbital rotation of thecrank pin 10 about the axis of rotation of the crankshaft continuously, in particular temporally equidistant, measured values, which fed to an evaluation device become.
In
Während des Meßvorganges ändert sich die Winkellage des Meßkopfes 12 relativ zu dem Kurbelzapfen 10, wobei die zugehörigen Winkellageänderungen über den Winkellagensensor 53 erfaßt werden, dessen Ausgangssignale der Auswertungseinrichtung 58 zugeführt werden. Die Ausgangssignale des Drehlagensensors 57, der der Drehachse der Kurbelwelle zugeordnet ist, werden ebenfalls der Auswertungseinrichtung 58 zugeführt, wie in
Anhand der so hochgenau und maschinenreferenzfrei ermittelten Winkellageänderungen korrigiert die Auswertungseinrichtung 58 die Zuordnung der zeitlich äuquidistant aufgenommenen Meßwerte des Meßtasters 60 dahingehend, daß diese Meßwerte lagerichtig den Umfangsstellen des Kurbelzapfens 10 zugeordnet werden.On the basis of the angular position changes determined with such high precision and with no machine reference, the
Da die Ermittlung der Winkellagenänderung des Meßkopfes relativ zu dem Prüfling maschinenreferenzfrei und absolut erfolgt, ist die Genauigkeit der Korrektur nicht mehr davon abhängig, inwieweit die durch das Gestänge 18 vorgegebene Kinematik des Meßkopfes 12 während des Meßvorganges einer angenommenen Kinematik entspricht. Einer Abweichung der tatsächlichen Kinematik von der angenommenen Kinematik, beispielsweise aufgrund eines Verschleißes von Bestandteilen des Gestänges 18, beeinflußt diese Korrektur und damit im Ergebnis die Meßgenauigkeit nicht.Since the determination of the angular position change of the measuring head relative to the test object is machine-referenced and absolute, the accuracy of the correction is no longer dependent on the extent to which the predetermined by the
Claims (9)
mit einem Meßkopf, der relativ zu einem Grundkörper der Meßvorrichtung zwischen einer Ruheposition und einer Meßposition, in der sich der Meßkopf in Meßkontakt mit dem Prüfling befindet, beweglich ist,
dadurch gekennzeichnet,
daß dem Meßkopf (12) ein maschinenreferenzfrei arbeitender Winkelsensor (55) zugeordnet ist zur Erfassung der Winkellage des Meßkopfes (12), insbesondere von Winkellageänderung des Meßkopfes (12) relativ zu dem Prüfling, während eines Meßvorganges.Measuring device, in particular for in-process measurement on test specimens during a machining process on a processing machine, in particular a grinding machine,
with a measuring head, which is movable relative to a main body of the measuring device between a rest position and a measuring position in which the measuring head is in measuring contact with the test object,
characterized,
that the measuring head (12) is assigned a machine-reference-free operating angle sensor (55) for detecting the angular position of the measuring head (12), in particular angular position change of the measuring head (12) relative to the test object, during a measuring operation.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010035147.4A DE102010035147B4 (en) | 2010-08-23 | 2010-08-23 | measuring device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2422927A2 true EP2422927A2 (en) | 2012-02-29 |
EP2422927A3 EP2422927A3 (en) | 2017-08-02 |
Family
ID=44650789
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11005887.2A Withdrawn EP2422927A3 (en) | 2010-08-23 | 2011-07-19 | Measuring device |
Country Status (3)
Country | Link |
---|---|
US (1) | US9393663B2 (en) |
EP (1) | EP2422927A3 (en) |
DE (1) | DE102010035147B4 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITBO20130498A1 (en) * | 2013-09-16 | 2015-03-17 | Marposs Spa | EQUIPMENT FOR THE CONTROL OF DIAMETER DIMENSIONS OF PINS |
ITBO20130629A1 (en) * | 2013-11-19 | 2015-05-20 | Marposs Spa | EQUIPMENT FOR THE CONTROL OF DIAMETER DIMENSIONS OF PINS |
WO2015036851A3 (en) * | 2013-09-16 | 2015-07-16 | Marposs Societa' Per Azioni | Apparatus for checking diametral dimensions of pins |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009032353A1 (en) * | 2009-07-08 | 2011-09-08 | Hommel-Etamic Gmbh | Method for determining the shape of a workpiece |
DE102010035147B4 (en) | 2010-08-23 | 2016-07-28 | Jenoptik Industrial Metrology Germany Gmbh | measuring device |
US20130115034A1 (en) * | 2011-11-08 | 2013-05-09 | Caterpillar Inc. | Pin position sensor mounting assembly |
EP2617522B1 (en) * | 2012-01-23 | 2014-01-15 | Supfina Grieshaber GmbH & Co. KG | Device for finely processing a peripheral area of the workpiece fixed in an eccentric manner to a peripheral area of a workpiece |
DE102012018580B4 (en) | 2012-09-20 | 2015-06-11 | Jenoptik Industrial Metrology Germany Gmbh | Measuring device and measuring method for in-process measurement on test specimens during a machining operation on a processing machine, in particular a grinding machine |
DE102014113553B3 (en) * | 2014-09-19 | 2015-09-17 | Jenoptik Industrial Metrology Germany Gmbh | Crank bearing edge measuring device |
DE102015115718B4 (en) * | 2015-09-17 | 2018-10-11 | Jenoptik Industrial Metrology Germany Gmbh | Roundness and / or dimension measuring device |
DE102016107135A1 (en) | 2016-04-18 | 2017-10-19 | Jenoptik Industrial Metrology Germany Gmbh | measuring arrangement |
US10254099B1 (en) | 2016-06-01 | 2019-04-09 | Gagemaker, Lp | In-process diameter measurement gage |
DE102016122695A1 (en) | 2016-07-20 | 2018-01-25 | Jenoptik Industrial Metrology Germany Gmbh | Surface measuring device |
DE102017106741B4 (en) | 2017-03-29 | 2019-11-14 | Jenoptik Industrial Metrology Germany Gmbh | surface measuring instrument |
DE102018103420A1 (en) * | 2018-02-15 | 2019-08-22 | Jenoptik Industrial Metrology Germany Gmbh | Measuring instrument for surface or contour measurement |
DE102019105059A1 (en) | 2018-12-19 | 2020-06-25 | Jenoptik Industrial Metrology Germany Gmbh | Method for operating a surface measuring device |
DE102020108182A1 (en) | 2019-05-07 | 2020-11-12 | Jenoptik Industrial Metrology Germany Gmbh | Surface measuring device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0859689A1 (en) | 1995-10-03 | 1998-08-26 | Marposs Societa' Per Azioni | Apparatus for checking the diameter of crankpins rotating with an orbital motion |
EP1370391A1 (en) | 2001-03-02 | 2003-12-17 | Marposs Societa Per Azioni | Apparatus for checking dimensional and geometrical features of pins |
EP1063052B1 (en) | 1999-06-25 | 2004-11-10 | Toyoda Koki Kabushiki Kaisha | Apparatus for measuring dimensional errors of eccentric cylinder by utilizing movement of measuring member held in contact with such eccentric cylinder |
Family Cites Families (149)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE88446C (en) | 1896-02-19 | 1896-09-03 | ||
US1425283A (en) | 1921-04-02 | 1922-08-08 | Frederick J Pratt | Grinding gauge |
DE347056C (en) | 1921-04-18 | 1922-01-13 | Skf Svenska Kullagerfab Ab | Device for checking the progress of work on grinding machines |
US1815049A (en) | 1927-07-08 | 1931-07-21 | Norton Co | Work size mechanism for grinding machines |
US1941456A (en) | 1928-08-23 | 1934-01-02 | Charles E Wisner | Grinding gauge |
US1892005A (en) | 1930-12-15 | 1932-12-27 | Int Harvester Co | Gauge |
US2003334A (en) | 1931-07-25 | 1935-06-04 | Norton Co | Caliper controlled grinding machine |
US2001447A (en) | 1932-03-12 | 1935-05-14 | Landis Tool Co | Automatic control mechanism |
BE458323A (en) | 1944-04-22 | |||
FR1005430A (en) | 1947-07-18 | 1952-04-10 | Gendron Freres Ets | Self-calibration device for machine tools and in particular for plunge grinding machines |
US2789354A (en) | 1949-01-21 | 1957-04-23 | Optical Gaging Prod Inc | Profile contour machine |
US2909873A (en) | 1957-04-29 | 1959-10-27 | James C Fisk | Gauge support |
US2949708A (en) | 1959-06-24 | 1960-08-23 | Cincinnati Milling Machine Co | Gage head for in-process gaging in machine tool |
US3157971A (en) | 1963-02-07 | 1964-11-24 | Landis Tool Co | Size control device adaptable to different diameters |
US3321869A (en) | 1964-07-13 | 1967-05-30 | Farrel Corp | Machine tool |
NL6410508A (en) | 1964-09-09 | 1966-03-10 | ||
US3274693A (en) | 1965-02-04 | 1966-09-27 | Bendix Corp | Method and apparatus for roundness measurement |
US3386178A (en) | 1965-08-11 | 1968-06-04 | Philip S. Arnold | Grinding gage |
US3352022A (en) | 1965-10-11 | 1967-11-14 | James C Fisk | Upright grinding gauge |
CH451548A (en) | 1966-06-01 | 1968-05-15 | Volpi Ag | Panorama lens for recording or projection purposes |
JPS5124892B1 (en) | 1969-04-26 | 1976-07-27 | ||
US3603044A (en) | 1969-06-10 | 1971-09-07 | Litton Industries Inc | Gauge mechanism for grinding machines |
US3648377A (en) | 1969-06-25 | 1972-03-14 | Bendix Corp | Sling roundness gage |
US3663190A (en) | 1970-04-22 | 1972-05-16 | James C Fisk | Gauge support |
DE2134848A1 (en) | 1970-07-22 | 1972-03-23 | Pluritec Italia Snc | Device for measuring different diameters |
US3694970A (en) | 1970-09-18 | 1972-10-03 | Litton Industries Inc | Offset size adjustment circuit for grinding machines |
JPS519587B1 (en) | 1970-12-03 | 1976-03-27 | ||
GB1320480A (en) | 1971-06-03 | 1973-06-13 | Toyoda Machine Works Ltd | Grinding machine |
US3802087A (en) | 1971-07-19 | 1974-04-09 | Inductosyn Corp | Measuring apparatus |
US3863352A (en) | 1973-06-14 | 1975-02-04 | American Gage & Mach | Gaging apparatus with flow control mechanism |
US3987552A (en) | 1974-07-01 | 1976-10-26 | Inductosyn Corporation | Measuring apparatus |
JPS5824223B2 (en) | 1976-06-30 | 1983-05-19 | 豊田工機株式会社 | Crank pin positioning method and device |
US4141149A (en) | 1976-09-30 | 1979-02-27 | Gravure Research Institute, Inc. | Portable comparator gage for measuring the relative deviation in the diameter of cylinders |
US4106241A (en) | 1976-10-28 | 1978-08-15 | Fisk James C | Grinding gauge support |
US4175462A (en) | 1977-06-17 | 1979-11-27 | Simon Jonathan C | System for selection and phase control of humbucking coils in guitar pickups |
JPS556825Y2 (en) | 1977-08-16 | 1980-02-15 | ||
JPS55120976U (en) | 1979-02-21 | 1980-08-27 | ||
IT1120335B (en) | 1979-04-05 | 1986-03-19 | Finike Italiana Marposs | EQUIPMENT FOR THE CONTROL OF LINEAR DIMENSIONS OF TREES |
JPS5841042Y2 (en) | 1979-04-13 | 1983-09-16 | 豊田工機株式会社 | Tailstock |
US4394683A (en) | 1980-06-26 | 1983-07-19 | Diffracto Ltd. | New photodetector array based optical measurement systems |
GB2086778B (en) | 1980-10-28 | 1984-02-22 | Landis Lund Ltd | Method and apparatus for indexing of a crankshaft |
IT1135893B (en) | 1980-12-23 | 1986-08-27 | Finike Italiana Marposs | MEASURING DEVICE FOR DIMENSIONAL CONTROL OF A MECHANICAL PART |
DE3121609A1 (en) | 1981-05-30 | 1982-12-23 | Naxos-Union Schleifmittel- Und Schleifmaschinenfabrik, 6000 Frankfurt | GRINDING MACHINE FOR LIFTING BEARINGS |
DE3123489A1 (en) | 1981-06-13 | 1982-12-30 | Dr. Johannes Heidenhain Gmbh, 8225 Traunreut | METHOD FOR MEASURING THE ROUNDNESS DIFFERENCES OF ROTATION BODIES AND DEVICES FOR IMPLEMENTING THE METHOD |
US4429464A (en) | 1982-01-29 | 1984-02-07 | Burrus Brice M | Roundness calibration standard |
US4414748A (en) | 1982-02-16 | 1983-11-15 | The Unites States Of America As Represented By The Department Of Energy | Ball mounting fixture for a roundness gage |
CH647189A5 (en) | 1982-06-03 | 1985-01-15 | Meseltron Sa | DEVICE FOR HANDLING A CYLINDRICAL OR SPHERICAL PART. |
US4480412A (en) | 1982-09-03 | 1984-11-06 | Litton Industrial Products, Inc. | In-process grinding gage |
DE3232904A1 (en) | 1982-09-04 | 1984-03-08 | Robert Bosch Gmbh, 7000 Stuttgart | PROBE FOR AUTOMATICALLY INSPECTING SURFACES |
JPS5993844U (en) | 1982-12-16 | 1984-06-26 | 豊田工機株式会社 | Crank pin indexing accuracy confirmation device |
HU192125B (en) | 1983-02-08 | 1987-05-28 | Budapesti Mueszaki Egyetem | Block of forming image for centre theory projection adn reproduction of spaces |
JPS59125001U (en) | 1983-02-14 | 1984-08-23 | 三洋電機株式会社 | rechargeable light fixture |
US4524546A (en) | 1983-06-06 | 1985-06-25 | Armco Inc | Roll profile gauge |
IT1183093B (en) | 1984-01-13 | 1987-10-05 | Schaudt Maschinenbau Gmbh | MEASUREMENT HEAD FOR GRINDING MACHINES |
DE8425377U1 (en) | 1984-07-03 | 1986-04-17 | Schaudt Maschinenbau Gmbh, 7000 Stuttgart | Grinding machine for measurement-controlled thread grinding |
US4637144A (en) | 1984-07-03 | 1987-01-20 | Schaudt Maschinenbau Gmbh | Apparatus for monitoring the diameters of crankpins during treatment in grinding machines |
IT1180539B (en) | 1984-10-15 | 1987-09-23 | Finike Italiana Marposs | HEAD FOR THE CONTROL OF MECHANICAL PARTS DIMENSIONS |
DE3511564A1 (en) | 1985-03-29 | 1986-10-02 | Hommelwerke GmbH, 7730 Villingen-Schwenningen | DEVICE FOR MEASURING THE CIRCULAR DIFFERENCE OF ECCENTRIC BEARING AREAS, IN PARTICULAR CONNECTING BEARINGS |
US4679331A (en) | 1985-08-26 | 1987-07-14 | Ppg Industries, Inc. | Apparatus and method for determining contour characteristics of a contoured article |
GB8603060D0 (en) | 1986-02-07 | 1986-03-12 | Rank Taylor Hobson Ltd | Usefulness of in situ roundness measurement |
IT1191690B (en) | 1986-03-20 | 1988-03-23 | Giustina International Spa | INDEPENDENT MEASURING APPARATUS FOR GRINDING MACHINES FOR CYLINDERS AND SIMILAR WITH STRUCTURAL AND SURFACE CONTROL BODIES |
GB8625702D0 (en) | 1986-10-28 | 1986-12-03 | Armstrong D A | Profile gauging |
US4819195A (en) | 1987-01-20 | 1989-04-04 | The Warner & Swasey Company | Method for calibrating a coordinate measuring machine and the like and system therefor |
IT1213718B (en) | 1987-11-09 | 1989-12-29 | Marposs Spa | APPARATUS FOR CHECKING CHARACTERISTICS OF PIECES WITH ROTATION SYMMETRY |
IT1213698B (en) | 1987-10-09 | 1989-12-29 | Marposs Spa | LARGE FIELD APPARATUS FOR THE CONTROL OF LINEAR DIMENSIONS OF PIECES |
GB2211940B (en) | 1987-11-04 | 1991-07-10 | Moore Dr David | Measuring the roundness of object |
GB8728016D0 (en) | 1987-11-30 | 1988-01-06 | Grosvenor R I | Methods and apparatus for measuring transverse dimensions of workpieces |
US4949469A (en) | 1988-07-01 | 1990-08-21 | Albion Devices, Inc. | Temperature-compensated quantitative dimensional measurement device with rapid temperature sensing and compensation |
IT1225040B (en) | 1988-08-11 | 1990-11-02 | Marposs Spa | APPARATUS FOR CHECKING PART CHARACTERISTICS |
DE3828181A1 (en) | 1988-08-19 | 1990-03-08 | Voith Gmbh J M | MEASURING DEVICE, ESPECIALLY FOR MEASURING THE DIAMETER OF ROLLERS IN ROLL GRINDING MACHINES |
FR2636877B1 (en) | 1988-09-27 | 1994-07-01 | Procedes Machines Speciales | MACHINE FOR THE ABRASIVE MACHINING OF CYLINDRICAL SURFACES ON PARTS, PARTICULARLY FOR THE MACHINING BY CANVAS OF TRACKS AND CRANKSHAFT ON CRANKSHAFT |
DE3841439A1 (en) | 1988-12-09 | 1990-06-13 | Pietzsch Automatisierungstech | DEVICE FOR SIMULTANEOUSLY MEASURING CYLINDER HOLES BEING ABOVE |
DE3900106C2 (en) | 1989-01-04 | 1994-01-05 | Bbc Pat Mestechnik Gmbh | Method and device for measuring the shape of cylinder bores in workpieces |
US5095663A (en) | 1989-02-07 | 1992-03-17 | Industrial Metal Products Corporation | Size control shoe for microfinishing machine |
AT393029B (en) | 1989-03-29 | 1991-07-25 | Rsf Elektronik Gmbh | INCREMENTAL LENGTH MEASURING SYSTEM |
US5088207A (en) | 1989-12-13 | 1992-02-18 | Betsill Harry E | True end-to-end electronic saddle micrometer |
US5097602A (en) | 1990-07-09 | 1992-03-24 | Westinghouse Electric Corp. | Apparatus and method for automated inspection of a surface contour on a workpiece |
FR2665526A1 (en) | 1990-08-02 | 1992-02-07 | Meseltron Sa | DEVICE FOR MEASURING DIAMETERS OF CYLINDRICAL PARTS DURING PROCESSING. |
DE4025522A1 (en) * | 1990-08-11 | 1992-02-13 | Wolter Doll Dieter | METHOD AND DEVICE FOR DETECTING MACHINING ERRORS, ESPECIALLY OF GRINDING MACHINES |
US5136527A (en) | 1990-10-05 | 1992-08-04 | Precision Devices, Inc. | Surface finish measuring device and method for gear teeth |
DE4031931A1 (en) | 1990-10-06 | 1992-04-09 | Perthen Feinpruef Gmbh | INDUCTIVE LENGTH GAUGE |
DK16791D0 (en) | 1991-01-30 | 1991-01-30 | Leif Groenskov | PROCEDURE AND METHOD FOR MEASURING A PROFILE |
US5099585A (en) | 1991-02-19 | 1992-03-31 | Control Gaging, Inc. | In-process machine gage |
US5337485A (en) | 1992-01-28 | 1994-08-16 | Chien An Y | Roundness error and crown electronic measuring system |
AU665048B2 (en) | 1992-02-14 | 1995-12-14 | Toyota Jidosha Kabushiki Kaisha | Apparatus and method for feedback-adjusting working condition for improving dimensional accuracy of processed workpieces |
JP3246961B2 (en) | 1992-11-05 | 2002-01-15 | 株式会社小松製作所 | Control device for crankshaft mirror |
IT1266221B1 (en) | 1993-01-21 | 1996-12-27 | Marposs Spa | EQUIPMENT FOR THE GEOMETRIC CHECK OF PIECES WITH ROTATION SYMMETRY |
US5914593A (en) | 1993-06-21 | 1999-06-22 | Micro Strain Company, Inc. | Temperature gradient compensation circuit |
DE4320845C1 (en) | 1993-06-23 | 1994-10-27 | Fraunhofer Ges Forschung | Arrangement for measuring scattered light in bores in work-pieces or in tubes |
US5473474A (en) | 1993-07-16 | 1995-12-05 | National Research Council Of Canada | Panoramic lens |
US5419056A (en) | 1993-07-29 | 1995-05-30 | Thomas E. Breitenstein | Centerless gaging apparatus for checking the concentricity and straightness of shank-type tools and the like |
DE4412682C2 (en) | 1994-04-13 | 1998-09-03 | Doerries Scharmann Ag I K | Device for measuring eccentrically rotating workpieces |
DE4416493A1 (en) | 1994-05-10 | 1995-11-16 | Bosch Gmbh Robert | Surface testing device |
DE4419656C2 (en) | 1994-06-06 | 1996-05-15 | Naxos Union Schleifmittel | Device for measuring diameter and / or roundness in eccentric cylindrical grinding |
DE4420137A1 (en) | 1994-06-09 | 1995-12-14 | Zeiss Messgeraetebau Gmbh | Measuring device for checking the dimensions of cylindrical workpieces |
US5479096A (en) | 1994-08-08 | 1995-12-26 | Lucas Industries, Inc. | Analog sensing system with digital temperature and measurement gain and offset correction |
US5551906A (en) | 1994-11-23 | 1996-09-03 | Voith Sulzer Paper Technology North America Inc. | Caliper assembly for grinder |
GB9509294D0 (en) | 1995-05-06 | 1995-06-28 | Western Atlas Uk Ltd | Improvements relating to guaging the diameter of cylindrical workpiece sections |
WO1997013614A1 (en) | 1995-10-06 | 1997-04-17 | Sagem S.A. | Device for measuring or checking an orbitally mobile cylindrical part during machining thereof |
GB9612383D0 (en) | 1995-12-07 | 1996-08-14 | Rank Taylor Hobson Ltd | Surface form measurement |
DE19602470A1 (en) | 1996-01-24 | 1997-07-31 | Siemens Ag | Determination and optimization of the working accuracy of a machine tool or a robot or the like |
US6062948A (en) | 1996-04-19 | 2000-05-16 | Schmitt Measurement Systems, Inc. | Apparatus and method for gauging a workpiece |
GB9608352D0 (en) | 1996-04-23 | 1996-06-26 | Western Atlas Uk Ltd | Workpiece grinding method and apparatus |
JPH09323257A (en) | 1996-05-31 | 1997-12-16 | Toshiba Mach Co Ltd | Roll diameter measuring method and roll diameter measuring device in roll grinding machine |
US5902925A (en) | 1996-07-01 | 1999-05-11 | Integrated Sensor Solutions | System and method for high accuracy calibration of a sensor for offset and sensitivity variation with temperature |
US5919081A (en) | 1996-09-04 | 1999-07-06 | Unova Ip Corporation | Method and apparatus for computer numerically controlled pin grinder gauge |
JPH10118974A (en) | 1996-10-14 | 1998-05-12 | M Alpha Giken:Kk | Hand rotating position detecting device in articulated robot |
KR19980053785U (en) | 1996-12-31 | 1998-10-07 | 추호석 | Tool compensator for machine tools |
DE19712622C5 (en) | 1997-03-26 | 2010-07-15 | Dr. Johannes Heidenhain Gmbh | Arrangement and method for the automatic correction of erroneous scanning signals of incremental position measuring devices |
EP0878704B1 (en) | 1997-05-13 | 2005-11-09 | Gretag-Macbeth AG | Reflectance measurement apparatus |
DE19740141C1 (en) | 1997-09-12 | 1999-04-29 | Daimler Chrysler Ag | Method for determining a swirl structure in the surface roughness of a finely machined shaft journal |
DE69809667T2 (en) | 1997-09-23 | 2003-04-24 | Unova U.K. Ltd., Aylesbury | Improvements to or in relation to trade fairs |
ES2169948T3 (en) | 1998-03-13 | 2002-07-16 | Marposs Spa | HEAD, SYSTEM AND PROCEDURE FOR VERIFICATION OF THE LINEAR DIMENSION OF A MECHANICAL PIECE. |
KR100264247B1 (en) | 1998-03-28 | 2000-08-16 | 김영삼 | Heat change error measuring system |
IT1298976B1 (en) | 1998-03-31 | 2000-02-07 | Balance Systems Spa | MEASURING APPARATUS FOR WORKPIECES, ESPECIALLY FOR GRINDING MACHINES |
US6029363A (en) | 1998-04-03 | 2000-02-29 | Mitutoyo Corporation | Self-calibrating position transducer system and method |
US6321171B1 (en) | 1998-04-03 | 2001-11-20 | Tektronix, Inc. | Electronic measurement instrument probe accessory offset, gain, and linearity correction method |
US6116269A (en) | 1998-07-07 | 2000-09-12 | Fasco Controls Corporation | Solenoid pressure transducer |
US6159074A (en) | 1999-01-07 | 2000-12-12 | Kube; Samuel C. | Caliper assembly for a grinding machine |
US6568096B1 (en) | 1999-02-22 | 2003-05-27 | Obschestvo s Ogranichennoi Otvetctvennostju “Tekhnomash” | Device and method for measuring shape deviations of a cylindrical workpiece and correcting steadying element and correcting follower for use therewith |
NO312567B1 (en) * | 1999-05-27 | 2002-05-27 | Det Norske Veritas As | Method of measuring material thickness distribution |
US6304827B1 (en) | 1999-09-16 | 2001-10-16 | Sensonor Asa | Sensor calibration |
DE19952592C1 (en) * | 1999-11-02 | 2001-05-10 | Hommelwerke Gmbh | Workpiece surface contour scanning sensor, has movement of sensor point contacting workpiece surface converted into acceleration data via acceleration transducer |
ITBO20000012A1 (en) | 2000-01-18 | 2001-07-18 | Marposs Spa | PIN DIAMETER CONTROL EQUIPMENT. |
DE10006372A1 (en) | 2000-02-12 | 2001-08-16 | Hauni Maschinenbau Ag | Method and device for the continuous compression of a moving stream of filter material |
IT1321212B1 (en) * | 2000-03-06 | 2003-12-31 | Marposs Spa | PIN DIAMETER CONTROL EQUIPMENT. |
IT1321211B1 (en) | 2000-03-06 | 2003-12-31 | Marposs Spa | APPARATUS AND METHOD FOR THE CONTROL OF PINS. |
DE10018107A1 (en) * | 2000-04-12 | 2001-10-25 | Helios Mestechnik Gmbh & Co Kg | Device and method for three-dimensional measurement of objects |
JP4051872B2 (en) | 2000-09-29 | 2008-02-27 | 株式会社ジェイテクト | Measuring method of processing part and processing method |
US20020066179A1 (en) | 2000-12-01 | 2002-06-06 | Hall Hendley W. | System and method for metalization of deep vias |
JP2002307268A (en) | 2001-04-19 | 2002-10-23 | Toyoda Mach Works Ltd | Processing method and device for eccentric cylindrical part of work using measuring device |
ITBO20010268A1 (en) | 2001-05-07 | 2002-11-07 | Marposs Spa | EQUIPMENT FOR CHECKING THE DIAMETER OF ECCENTRIC PORTIONS ASK FOR A MECHANICAL PART DURING WORKING ON A GRINDING MACHINE |
US6487787B1 (en) | 2001-08-03 | 2002-12-03 | Mitutoyo Corporation | System and method for determination of error parameters for performing self-calibration and other functions without an external position reference in a transducer |
JP3377995B1 (en) | 2001-11-29 | 2003-02-17 | 株式会社立山アールアンドディ | Panoramic imaging lens |
US6560890B1 (en) | 2002-02-21 | 2003-05-13 | General Electric Company | Fixture for locating and clamping a part for laser drilling |
ITBO20020369A1 (en) | 2002-06-12 | 2003-12-12 | Marposs Spa | APPARATUS FOR THE CONTROL OF DIMENSIONAL AND GEOMETRIC FEATURES OF PINS |
US6859756B2 (en) | 2002-09-06 | 2005-02-22 | Red X Holdings Llc | Diagnostic method for manufacturing processes |
DE20214856U1 (en) | 2002-09-26 | 2003-01-02 | BBi Brunnen- und Bohrlochinspektion GmbH, 39245 Gommern | Optical bore inspection probe has panoramic lens without mechanical motion |
DE102005045374A1 (en) * | 2005-09-22 | 2007-04-05 | Siemens Ag | Measuring device with a measuring head for determining the position of a primary part on a secondary part and method for determining the position of a primary part on a secondary part with a measuring head |
ITBO20060118A1 (en) | 2006-02-16 | 2007-08-17 | Marposs Spa | COMPARATOR FOR THE CONTROL OF RADIAL DIMENSIONS OF MECHANICAL PARTS. |
DE102007031358B4 (en) | 2007-07-05 | 2023-03-16 | Jenoptik Industrial Metrology Germany Gmbh | Apparatus for imaging the inner surface of a cylindrical cavity |
DE102008016228A1 (en) | 2008-03-27 | 2009-10-08 | Hollinger Maschinen Gmbh | Plastering machine for post processing of corners of profile frame fused from plastic profiles, has plastering head with multiple processing tools having processing unit |
DE102009019459B4 (en) | 2009-05-04 | 2012-02-02 | Hommel-Etamic Gmbh | Device for imaging the inner surface of a cavity in a workpiece |
DE102009032353A1 (en) | 2009-07-08 | 2011-09-08 | Hommel-Etamic Gmbh | Method for determining the shape of a workpiece |
DE102009042252B4 (en) | 2009-09-22 | 2014-03-06 | Jenoptik Industrial Metrology Germany Gmbh | measuring device |
DE102010013069B4 (en) | 2010-03-26 | 2012-12-06 | Hommel-Etamic Gmbh | measuring device |
DE102010018820B3 (en) | 2010-04-29 | 2011-10-13 | Hommel-Etamic Gmbh | Method for determining a twist structure |
DE102010035147B4 (en) | 2010-08-23 | 2016-07-28 | Jenoptik Industrial Metrology Germany Gmbh | measuring device |
US8508743B2 (en) | 2011-03-04 | 2013-08-13 | Hommel-Etamic Gmbh | Crankshaft testing method |
-
2010
- 2010-08-23 DE DE102010035147.4A patent/DE102010035147B4/en active Active
-
2011
- 2011-07-19 EP EP11005887.2A patent/EP2422927A3/en not_active Withdrawn
- 2011-08-22 US US13/214,764 patent/US9393663B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0859689A1 (en) | 1995-10-03 | 1998-08-26 | Marposs Societa' Per Azioni | Apparatus for checking the diameter of crankpins rotating with an orbital motion |
EP1063052B1 (en) | 1999-06-25 | 2004-11-10 | Toyoda Koki Kabushiki Kaisha | Apparatus for measuring dimensional errors of eccentric cylinder by utilizing movement of measuring member held in contact with such eccentric cylinder |
EP1370391A1 (en) | 2001-03-02 | 2003-12-17 | Marposs Societa Per Azioni | Apparatus for checking dimensional and geometrical features of pins |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITBO20130498A1 (en) * | 2013-09-16 | 2015-03-17 | Marposs Spa | EQUIPMENT FOR THE CONTROL OF DIAMETER DIMENSIONS OF PINS |
WO2015036851A3 (en) * | 2013-09-16 | 2015-07-16 | Marposs Societa' Per Azioni | Apparatus for checking diametral dimensions of pins |
CN105555477A (en) * | 2013-09-16 | 2016-05-04 | 马波斯S.P.A.公司 | Apparatus for checking diametral dimensions of pins |
KR20160058871A (en) * | 2013-09-16 | 2016-05-25 | 마포스 쏘시에타 페르 아지오니 | Apparatus for checking diametral dimensions of pins |
US9878418B2 (en) | 2013-09-16 | 2018-01-30 | Marposs Societa' Per Azioni | Apparatus for checking diametral dimensions of pins |
CN105555477B (en) * | 2013-09-16 | 2018-05-18 | 马波斯S.P.A.公司 | For checking the equipment of the diameter dimension of pin |
ITBO20130629A1 (en) * | 2013-11-19 | 2015-05-20 | Marposs Spa | EQUIPMENT FOR THE CONTROL OF DIAMETER DIMENSIONS OF PINS |
Also Published As
Publication number | Publication date |
---|---|
DE102010035147B4 (en) | 2016-07-28 |
US20120043961A1 (en) | 2012-02-23 |
EP2422927A3 (en) | 2017-08-02 |
US9393663B2 (en) | 2016-07-19 |
DE102010035147A1 (en) | 2012-02-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE102010035147B4 (en) | measuring device | |
EP3049758B1 (en) | Reduction of errors of a rotating device used during the determination of co-ordinates of a workpiece or during the machining of a workpiece | |
EP2711132B1 (en) | Measuring device | |
EP2283311B1 (en) | Measuring method for an articulated-arm coordinate measuring machine | |
EP2486369B1 (en) | Coordinate measuring device having positional change sensors | |
EP2093537B1 (en) | Process and device for the determination of the alignment of two rotatable machine parts | |
EP2199732B1 (en) | Device with roughness measuring probe | |
EP2156921B1 (en) | Device for reducing oscillations of a tool spindle | |
EP2834595A1 (en) | Method and device for reducing errors in a turning device during the determination of coordinates of a workpiece or during the machining of a workpiece | |
DE10102171B4 (en) | Longitudinal Linearity Compensation Method and Rotational Accuracy Compensation Method of a Meter | |
EP2422018A1 (en) | Mobile working machine comprising a position control device of a working arm and method for controlling the position of a working arm of a mobile working machine | |
DE102015115718B4 (en) | Roundness and / or dimension measuring device | |
EP2824420B1 (en) | Device for determining position with an inertial measuring unit | |
DE102011011065B4 (en) | Method and device for the high-precision measurement of surfaces | |
DE202014101900U1 (en) | Manipulator for spatial orientation of a miniature roughness meter | |
DE102018005304A1 (en) | Machine tool and zero point correction method | |
EP3265756B1 (en) | Assembly for determining a movement fault of a rotating device | |
EP3421931A1 (en) | Coordinate measuring machine for coordinate measurement of workpieces and method for measuring the coordinates of workpieces on a coordinate measuring machine | |
EP1391684B1 (en) | Coordinate measuring machine and method for correcting error | |
DE202013102045U1 (en) | Surface microstructure measuring device with variable measuring system | |
EP1528354B1 (en) | Method and apparatus for measuring of an object by using a coordinate measuring machine | |
DE102015208803B3 (en) | Turntable for a coordinate measuring machine | |
DE4419909B4 (en) | Device for controlling the geometric and dynamic accuracy of an NC-controlled working head | |
DE102015201582A1 (en) | Determination and correction of a fault of a turning device for a coordinate measuring machine | |
DE10355883A1 (en) | Circular table plate`s rotation axes spatial orientation determination device for machine tool, has gyroscope whose angular momentum vector and rotation axis find orientation of rotation axes of plate based on plate movement |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: JENOPTIK INDUSTRIAL METROLOGY GERMANY GMBH |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: B24B 5/42 20060101AFI20170626BHEP Ipc: B24B 49/04 20060101ALI20170626BHEP |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20180203 |