WO2008135144A1 - Koordinatenmessgerät zum bestimmen von raumkoordinaten an einem messobjekt sowie dreh-schwenk-mechanismus für ein solches koordinatenmessgerät - Google Patents
Koordinatenmessgerät zum bestimmen von raumkoordinaten an einem messobjekt sowie dreh-schwenk-mechanismus für ein solches koordinatenmessgerät Download PDFInfo
- Publication number
- WO2008135144A1 WO2008135144A1 PCT/EP2008/003100 EP2008003100W WO2008135144A1 WO 2008135144 A1 WO2008135144 A1 WO 2008135144A1 EP 2008003100 W EP2008003100 W EP 2008003100W WO 2008135144 A1 WO2008135144 A1 WO 2008135144A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stylus
- probe
- coordinate measuring
- measuring machine
- rotary
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/004—Measuring arrangements characterised by the use of mechanical techniques for measuring coordinates of points
- G01B5/008—Measuring arrangements characterised by the use of mechanical techniques for measuring coordinates of points using coordinate measuring machines
- G01B5/012—Contact-making feeler heads therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/04—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
- G01B21/047—Accessories, e.g. for positioning, for tool-setting, for measuring probes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/004—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring coordinates of points
- G01B7/008—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring coordinates of points using coordinate measuring machines
- G01B7/012—Contact-making feeler heads therefor
Definitions
- Coordinate measuring device for determining spatial coordinates on a measurement object and rotary-pivot mechanism for such a coordinate measuring machine
- the present invention relates to a coordinate measuring machine for determining spatial coordinates on a measurement object, having a probe head with a probe sensor, with a frame structure, which is designed to move the probe relative to the measurement object, with a stylus for touching the measurement object, and with a passive rotary-swivel mechanism, via which the stylus is spatially adjustable coupled to the probe.
- the invention relates to a passive rotary-pivot mechanism for such a coordinate measuring machine.
- Such a coordinate measuring machine and such a rotary-pivot mechanism are known for example from DE 196 05 776 Al.
- the known coordinate measuring device has a probe with a stylus, which is attached to the lower free end of a vertically arranged quill.
- the quill can be moved in the vertical direction, so that the probe can be moved perpendicular to a measuring table, which serves to receive a measured object.
- the sleeve is in turn arranged on the cross member of a portal, and it can be moved on the cross member in a first Ho ⁇ zontal ⁇ chtung.
- the portal can be moved together with the quill in a second horizontal direction, so that the probe can be moved in total in three mutually perpendicular directions in space.
- the maximum travels of the probe along the three axes of motion determine the measuring volume within which spatial coordinates can be determined on a measured object.
- the test object is placed on the measuring table. Subsequently, selected measuring points are touched on the measuring object with the free tip of the stylus. From the position of the probe within the measuring volume as well as from the deflections of the stylus relative to the probe can then be determined Kunststoffkoordmaten for the touched measuring point. By determining several spatial coordinates at different measuring points, it is possible to determine geometric dimensions and even the object contour of the measured object. A typical field of application for such co-ordinate measuring instruments is the measurement of quality control workpieces.
- the measuring points on a measuring object are located at a location which is difficult to access for the stylus, as for example when the depth of a bore arranged laterally on the measuring object is to be determined.
- stylus configurations in which a stylus is arranged transversely to the Z axis of the coordinate measuring machine.
- Frequent changes of styli and / or stylus combinations are required to perform a variety of complex measurement tasks. This is disadvantageous because a stylus change costs time and therefore increases the time required to perform the measurement.
- the flexibility is at your disposal Stylus combinations limited. For example, if the depth of a bore inclined at 45 ° to the surface of the measurement object is to be determined, a suitable stylus or stylus combination is needed.
- the aforementioned DE 196 05 776 Al proposes a stylus with a passive rotary-swivel mechanism.
- the rotary-pivot mechanism makes it possible to change the spatial position of the stylus relative to the probe.
- the stylus may be pivoted with respect to the Z-axis by an angle of perhaps 30 ° or 40 ° and additionally rotated about the Z-axis.
- the rotary swivel mechanism of DE 196 05 776 Al does not include a drive for performing these rotary and pivotal movements (hence the term passive rotary swivel mechanism).
- a stop in the form of a star body is arranged in the measuring volume of the coordinate measuring machine.
- the stylus is brought with the help of the drives of the coordinate measuring machine between the teeth of the star body until it pinches there. Subsequently, the probe of the coordinate measuring machine is moved within the measuring volume, whereby the spatial position of the stylus changes relative to the probe.
- a spring-loaded locking means is arranged, the locking effect is suppressed by the movements of the probe with a clamped stylus.
- a disadvantage of active rotary-pivot mechanisms is that the Tastkopfsen- so ⁇ k, so the Senso ⁇ k, with the aid of the deflections of the stylus can be determined relative to the probe, between the stylus and the rotary and pivot axes hedges (from view the stylus is the Senso ⁇ k arranged in front of the drives).
- the distance between the tip of the stylus and the respective rotary-pivot axis is relatively large.
- relatively large travel paths are required on a measurement object.
- the maximum total mass of Taststatte or Taststattkombinationen with active rotary-pivot mechanisms is relatively low, since in the Tastkopfsenso ⁇ k space reasons no Tariermechanismen are accommodated.
- a coordinate measuring apparatus of the type mentioned in the introduction in which the passive rotary-pivot mechanism has a transmission with a drive side and a drive output side, wherein the output drive side is coupled to the stylus to adjust the stylus relative to the probe, and wherein the drive side has at least one access to initiate an external torque for adjusting the stylus.
- a rotary-pivot mechanism having an interface for releasably coupling to a probe, the rotary-pivot mechanism having a receptacle for receiving a stylus and a transmission having a drive side and an output side Output side is coupled to the receptacle to adjust the stylus relative to a probe, and wherein the drive side has at least one access to initiate an external torque for adjusting the stylus.
- the new coordinate measuring machine combines the advantages of a probe with a central probe sensor with the advantages of a relative to the probe pivotable stylus.
- the new coordinate measuring machine does not require a stop on which the stylus is supported or clamped in order to carry out an adjustment of the stylus relative to the probe.
- the passive rotary swivel mechanism has a transmission with an external access, which allows the direct feeding of a rotational or driving torque to the rotary-pivot mechanism itself.
- the drive torque could be generated, for example, with an electric drive, which is arranged externally, in contrast to the active rotary-pivot mechanisms, preferably at a central point as possible of the coordinate measuring machine. For example, could engage a shaft of the external electric drive in a corresponding shaft receiving the rotary-pivot mechanism to initiate the drive torque for adjusting the stylus on the drive side of the transmission.
- the new coordinate measuring machine In a preferred embodiment, which is described in greater detail below with reference to a detailed exemplary embodiment, the new coordinate measuring machine
- the already existing actuators of the coordinate device advantage ie it is in the preferred embodiment no further drive needed.
- the new coordinate measuring machine has the advantage that the measuring volume is largely unrestrictedly available for receiving a measured object.
- the external drive torque can be introduced at a central position of the probe within the measuring volume in the rotary-pivot mechanism, so that only small travels are required to adjust the spatial orientation of the stylus.
- the central probe sensor which is arranged as seen from the stylus from the rotation and pivot axes, can be made much more complex than active rotary pivot joints, because the available space has only a very small effect on the accessibility to the measured object .
- a probe can be used with one or more measuring force generators, which enable on the one hand a deflection of the stylus and on the other hand a taring.
- Other tare mechanisms can also be relatively easily integrated or reused on account of the central probe sensor system.
- the new coordinate measuring machine offers all the advantages that result from the variable adjustability of the stylus relative to the probe.
- complex measuring objects with different measuring points can be measured with a few styli and / or stylus combinations. Since the number of stylus changes required so far can be reduced, the new coordinate measuring machine enables a very fast execution of complex measuring tasks.
- the central probe sensor also allows very accurate measurements.
- the rotary-pivot mechanism has at least one locking mechanism with a release position and a closed position, wherein the locking mechanism releases the stylus in the release position, so that the Tastrich can be adjusted via the transmission, and wherein the locking mechanism blocks the stylus in the closed position rotationally fixed.
- the stylus could, for example, by friction, which is overcome by means of the externally introduced drive torque, held in position.
- the use of a locking mechanism with a release position and a closed position allows a greater holding force on the stylus in the closed position.
- the greater holding force allows a higher accuracy of measurement and prevents unintentional adjustment of the Tastrichposition, for example, when probing the DUT.
- the rotary-pivot mechanism has at least a first and a second axis of rotation, wherein the first axis of rotation extends in a plane parallel to the stylus, and wherein the second axis extends transversely to the stylus.
- the first and second axes of rotation are orthogonal to each other.
- the rotary-pivot mechanism allows flexible adjustment of the stylus to a variety of positions within a spherical segment.
- the present invention may also be implemented in a mechanism having only one axis of motion for the stylus, the term "rotary pan mechanism" being used herein for convenience also for such simplified mechanisms. The greater flexibility due to two axes of rotation enables faster and more variable measurements.
- the locking mechanism has a first lock and a second lock, the first lock blocking the stylus about the first axis of rotation, and the second lock blocking the stylus about the second axis of rotation.
- the stylus can be selectively released with respect to the first or the second axis of rotation.
- this embodiment allows the stylus to be adjusted about one of the axes of rotation while the second axis of rotation is blocked so that the stylus is held in a stable position with respect to the second axis of rotation. This embodiment allows a very accurate adjustment of the stylus and consequently a very high accuracy.
- the transmission is designed to adjust the stylus about the first or about the second axis of rotation.
- the transmission are used both for the adjustment about the first axis of rotation and about the second axis of rotation. It is thus a transmission that may have several alternative output sides. Alternatively, each axis of rotation could be connected to its own, separate transmission.
- the preferred embodiment allows a weight reduction, which is advantageous in terms of usable Tastrichmayn and configurations.
- This embodiment is particularly advantageous in combination with a separately detachable first and second lock for the first and second rotation axis. This combination allows a very simple and easy construction of the new rotary-swivel mechanism. Due to the separate locks, the gear can be realized with few parts.
- the rotary-pivot mechanism has at least one actuator, which is designed to bring the at least one locking mechanism from the closed position into the release position.
- the stylus with the help of the actuator can be selectively unlocked to set a new Tastrichposition.
- the actuator is integrated into the rotary-pivot mechanism, so that no modification is required on the probe.
- the rotary-pivot mechanism has another access to operate the actuator from the outside.
- This configuration allow easy retrofitting of the new rotary swivel mechanism in older coordinate measuring machines.
- the rotary-pivot mechanism includes a drive wheel, in particular a gear with external teeth, which forms the further access.
- a drive wheel such as a gear with external teeth
- a friction wheel drive can also be used instead of a toothed wheel.
- the actuator has at least three actuator positions, wherein a first actuator position is configured such that the locking mechanism blocks the stylus about all axes of rotation and wherein second and third actuator positions are configured such that the locking mechanism surrounds the stylus around each axis of rotation releases.
- This embodiment allows a particularly easy and compact realization of the new rotary-pivot mechanism, which makes use of all the advantages of the aforementioned embodiments.
- the transmission has a second drive wheel, in particular provided with an external toothing second gear, which forms the access for the external drive torque.
- a gear with external teeth is a very simple, easy and cost-effective implementation to generate an external drive torque using the already present in a coordinate measuring machine actuators. In principle, one can also use a friction wheel drive here. Both embodiments allow a very simple and cost-effective implementation.
- the rotary-pivot mechanism has at least one eccentric which is non-rotatably connected to the second drive wheel.
- a further eccentric is arranged on a base body, which is rotatable together with the stylus about the first axis of rotation.
- Such eccentrics allow a very simple and accurate determination of the respective Tastrichposition relative to the probe.
- the feeler head sensor system can be used for this purpose in that the probe touches a known measuring point (reference measuring point) with the eccentric.
- the use of each one eccentric allows easy determination of the respective Tastrichposition with respect to each of the axes of rotation.
- the coordinate measuring machine has a linear stop, in particular in the form of a rack, with a longitudinal extent, wherein the probe is movable relative to the linear stop along the longitudinal extent.
- This embodiment is a very simple and cost-effective way to generate an external drive torque on the rotary-pivot mechanism using the existing actuators of the coordinate measuring machine.
- the linear stop is arranged in a central region of the coordinate measuring machine.
- a coordinate measuring machine in gantry or bridge construction of the linear stop is advantageously arranged on the cross member of the portal or the bridge, which allows particularly short routes for adjusting the Tastrichposition.
- the measuring volume of this coordinate measuring machine is completely available for receiving a measured object.
- the probe has at least one measuring force generator which is capable of generating a deflection of the stylus.
- This embodiment is advantageous because the measuring force factor can be used to connect the rotary-swivel mechanism to the source of external drive torque, such as the rack described above and / or to an external electric drive.
- the rotary-pivot mechanism is detachably arranged on the probe.
- This design makes it possible to use the rotary-pivot mechanism as an alternative to conventional styli or stylus combinations on a probe.
- a simple and cost-effective retrofitting of existing coordinate measuring machines in this embodiment is possible.
- FIG. 2 is a simplified representation of a probe head with a Tastkopfsensorik and a measuring force generator
- FIG. 3 shows a preferred embodiment of the rotary-pivot mechanism for the coordinate measuring machine of FIG. 1 in a lateral cross section
- an embodiment of the new coordinate measuring machine is designated in its entirety by the reference numeral 10.
- the coordinate measuring machine 10 here has a base 12 on which a portal 14 is arranged to be displaceable in the longitudinal direction.
- the direction of movement of the portal 14 relative to the base 12 is commonly referred to as the Y-axis.
- a carriage 16 is arranged, which is displaceable in the transverse direction.
- the transverse direction is usually called the X-axis.
- the carriage 16 carries a quill 18, which can be moved in the Z direction, that is perpendicular to the base 12.
- Reference numerals 20, 22, 24 designate measuring devices with which the position of the portal 14, the carriage 16 and the quill 18 can be determined.
- the measuring devices 20, 22, 24 are glass scales, which are read by means of suitable sensors.
- a probe 26 is arranged with a stylus 28.
- the stylus 28 has at its lower free end a Tastkugel 29, which serves to key a measuring point on a measuring object 30.
- the position of the probe 26 can be determined within the measuring volume when touching the measuring point. Depending on this, one can then determine the spatial coordinates of the touched measuring point.
- Reference numeral 32 denotes an evaluation and control unit.
- the evaluation and control unit 32 serves on the one hand to control the motor drives for the movements of the probe 26 along the three coordinate axes X, Y and Z.
- the evaluation and control unit 32 reads the measured values from the measuring devices 20, 22, 24, and determines depending on and in dependence on the deflections of the stylus 28, the current spatial coordinates of the measuring point and optionally further geometric variables of the measuring object 30
- Reference numeral 34 denotes a control panel, which may optionally be provided to manually move the probe 26.
- a rack 36 is attached to the cross member of the portal 14 here.
- the rack 36 is arranged so that the probe 26 can be moved by means of the sleeve 18 in the region of the rack 36, as will be explained in more detail below with reference to FIGS. 3 to 8.
- a friction surface could be arranged here, for example, on which a friction wheel can be rotated.
- an electric drive could be arranged here in other embodiments to generate an external drive torque for adjusting the stylus 28.
- the rack 36 or the electric drive could also be arranged at a different location within the measuring volume of the coordinate measuring machine 10, for example on one of the portal columns and / or on a stylus magazine, which is not shown here for the sake of simplicity.
- Fig. 2 shows a simplified schematic representation of the basic operation of the probe 26.
- the probe 26 has a fixed part 38 and a movable part 40, which are connected to each other via two leaf springs 42, 44.
- the leaf springs 42, 44 form a spring parallelogram, which allows movement of the part 40 in the direction of the arrow 46 (and back). This can be the Tastrich 28 are deflected by a distance D from its rest position.
- the probe 28 is shown schematically in the deflected position.
- the deflection of the stylus 28 relative to the fixed part 38 may be the result of a probing of the measuring object 30 at a measuring point.
- the deflection of the stylus is taken into account in the determination of the spatial coordinates.
- the deflection of the stylus in preferred embodiments can be generated by means of a measuring force generator, as explained in more detail below.
- a leg 48, 50 is arranged in each case.
- the legs 48, 50 are parallel to the leaf springs 42, 44 and parallel to each other.
- a sensor 52 shown here with a scale 54
- a measuring force generator 56 is arranged between the legs 48, 50.
- the sensor 52 may be a plunger coil, a Hall sensor, a piezoresistive sensor or other sensor, with the aid of which the spatial deflection of the stylus 28 relative to the fixed part 38 can be determined.
- the measuring force generator 56 may be, for example, a plunger coil, by means of which the two legs 42, 50 can be pulled against each other or pushed apart.
- the probe 26 allows only a deflection of the stylus in the direction of arrow 46.
- a probe typically allows a corresponding deflection in two other orthogonal directions in space.
- An embodiment of such a probe is described in the aforementioned DE 44 24 225 Al, the disclosure of which is incorporated herein by reference.
- the invention is not limited to this particular probe and can be implemented with other probing probes. It will be appreciated by those skilled in the art that a probe of the type shown greatly simplified in FIG. 2 generally has a receptacle to which stylus 28 is removably secured.
- a rotary-pivot mechanism with a stylus 28 is inserted into the stylus receptacle of the probe 26, so that either the rotary-pivot mechanism or a conventional stylus can be attached to the probe 26.
- a preferred embodiment of a rotary-pivot mechanism will be described below with reference to FIGS. 3 to 8 in more detail.
- the preferred rotary-pivot mechanism is indicated in Figs. 3 to 8 in its entirety by the reference numeral 60.
- the rotary-pivot mechanism 60 has at its upper end a plate 62 which is adapted to the Tastrich technique of the probe 26. This is a conventional exchange plate, as it is commonly used in interchangeable styli.
- the changeover plate 62 is fastened to a base body 64.
- the base body 64 forms the fixed part of the rotary-pivot mechanism 60. It carries at its lower free end a first gear 66 with a radial external toothing 67.
- the gear 66 is on the base body 64 about the vertical axis 68 of the rotary-pivot mechanism 60 rotatable.
- the main body 64 here has an internal cavity, at the bottom of a rod 70 is fixed, which extends vertically downwards.
- the rod 70 has at its lower free end a plate 72 on which a coil spring 74 is supported.
- the tube 76 Concentric with the rod 70 is a tube 76 which is vertically displaceable on the rod 70 (see Fig. 4).
- the tube 76 has at its lower end a cone body 78 and at its upper end a double cone body 80, which are each firmly connected to the tube 76.
- the reference numeral 82 denotes an axle body, which is arranged concentrically to the tube 76.
- the axle body 82 is pressed by means of the spring 74 against the lower end of the base body 64.
- a ball toothing 84 is arranged between the opposite end surfaces of the base body 64 and the axle body 82.
- the ball toothing 84 forms a first lock, with which the axle body 82 is non-rotatably supported on the base body 64.
- the ball gear 84 includes a plurality of first and second balls, wherein the first balls are arranged in an annular groove at the lower free end of the base body 64, while the second balls are arranged in a corresponding annular groove at the upper end of the axle body 82.
- the balls lock into each other due to the spring tension of the spring 74.
- a ball-and-ball gearing ball-and-roller gearing, Hirth gearing or another suitable locking mechanism could also be used.
- the axle body 82 carries at its upper end (below the ball toothing 84) a second gear 86 with a radially outer toothing 88.
- the gear 86 is rotatable together with the axle body 82 about the vertical axis 68 around, as soon as the ball tooth 84 dissolved in the manner described below is. In the operating situation shown in Fig. 3, the gear 86 is locked against rotation due to the ball teeth 84.
- the axle body 82 has on its lateral surface below the gear 86, a bearing in which a hollow shaft 90 is rotatably mounted.
- the hollow shaft 90 extends orthogonal to the vertical axis 68 and is rotatable about a transverse axis 91 (FIG. 7).
- a further gear 92 is arranged with a radial external toothing 94.
- the outer toothing 94 engages in an axial toothing 96, which is arranged on the underside of the gear 86 annularly circulating.
- a further axle body 98 is arranged on the hollow shaft 90, which is non-rotatably connected to the gear 92.
- the axle body 98 is blocked against rotation by a further ball toothing 100 on the lateral surface of the first axle body 82.
- the ball toothing 100 forms a second barrier, as long as the axle body 98 with Help the other spring 102 is pressed against the first axle 82.
- a ball-roller or Hirth teeth could be used instead of a ball-ball teeth.
- the outer toothing 94 of the gear 92 does not extend over the entire outer circumference of the gear 92, but only over about 270 °. In the circular segment of the gear 92, in which no external toothing 94 is present, the stylus 28 is releasably secured in a Tastfuelealterung.
- a lifting pin 104 is arranged (FIG. 6), whose free end is supported on the conical surface of the cone body 78. By lifting the cone body 78, the lift pin 104 can be pushed outward, whereby the ball gear 100 is released and the rotational movement of the gear 92 is made possible.
- the double cone body 80 at the top of the tube 76 cooperates with two further lift pins 106, 108 ( Figure 4).
- the lift pins 106, 108 may be spring loaded to set a defined rest position.
- the base body 64 has at its lower free end two radial bores, in each of which one of the lifting pins 106, 108 is arranged displaceably.
- the lifting pins 106, 108 lie on a plane with the first gear 66.
- the lifting pin 106 is supported on the upper conical surface of the double cone body 80, while the lifting pin 108 bears against the lower conical surface of the double cone body 80.
- the lifting pin 108 If, on the other hand, the lifting pin 108 is pressed radially inward in the direction of the arrow 114 (FIG. 6), it raises the tube 76 with the aid of the double cone body 80. By this movement, the cone body 78 is lifted upward, and he prints the lift pin 104 radially outward, whereby the second ball toothing 100 is released. In this Bet ⁇ ebsposition (Fig. 6), the gear 92 can be rotated relative to the Achskorper 82.
- the gear 66 has a radially inner, eccentric recess 116.
- the recess 116 is arranged so that none of the two lifting pins 106, 108 in the direction of Doppelkonuskorpers 80th is advanced. Therefore, the tube 76 with the cone body 78 and the Doppelkonuskorper 80 is in its rest position. Both ball teeth 84, 100 are engaged.
- the stylus 28 is fixed in a defined position and orientation relative to the probe (not shown here).
- the probe 26 of the coordinate measuring device 10 is first moved into the region of the rack 36. Subsequently, the gear 66 is brought into engagement with the rack 36 by means of the measuring force generators 56 (FIG. 4). By now the probe 26 is moved parallel to the rack 36 (X-direction), generates a drive torque which acts on the gear 66. Depending on the Verfahr ⁇ chtung of the probe 26 relative to the rack 36, the gear 66 is rotated clockwise or counterclockwise. In the operating position shown in Figure 4, the eccentric recess 116 "opens" due to the rotational movement in the region of the Hubstattes 108.
- the advancing movement of the probe 26 is stopped relative to the rack 36.
- the gear 86 is removed by means of the measuring force generators 56 from the engagement with the rack 36.
- the sleeve 18 is again moved in the Z direction with the probe 26, and the first gear 66 is again brought into engagement with the rack 36 (FIG. 4).
- the tube 76 is released again, and the spring 74 presses the axle body 82 in the ball toothing on the main body 64.
- the newly set rotational position of the stylus 28 is now fixed.
- the adjustment of the stylus 28 about the second axis of rotation 91 is shown in Figs. 6 and 7.
- the gear 66 is first brought into engagement with the rack 36.
- the gear 66 is rotated so that the lifting pin 108 pushes the double cone body 80 upwards.
- the lifting pin 104 is pressed radially outward on the second axle body 98 (arrow 120).
- the second ball toothing 100 is released.
- the probe 26 is raised in the Z direction to bring the second gear 86 into engagement with the rack 36.
- a drive torque is generated, which transmits via the gears 94, 96 to the gear 92.
- the stylus 28 is rotated about the transverse axis 91, which is indicated in Fig. 7 at the double arrow 122.
- the length of the lift pin 104 and the cone angle of the cone body 78 are dimensioned so that the ball teeth 100 is not completely dissolved, but a minimum residual engagement remains. In this way, a braking torque is generated, which prevents the stylus 28 during Loosening of the gear 86 is rotated back by the rack 36 due to gravity.
- a corresponding braking torque for example by means of an electromagnet and / or a friction body, which rests against the gear 92 when the ball toothing 100 is released.
- FIG. 8 shows a variant with the aid of which the respective position of the stylus 28 relative to the probe 26 can be determined.
- the first eccentric 124 is rotatably connected to the axle body 82 and arranged concentrically to the axle body 82, so that on the outer circumference of the eccentric 124, the rotational angular position of the axle body 82 can be determined about the vertical axis 68.
- the second eccentric disc 126 is non-rotatably connected to the second gear 86 and arranged so that the rotational angular position of the gear 86 can be determined about the vertical axis 68 by means of the eccentric disc 126.
- the probe 26 In order to determine the spatial position of the stylus 28, the probe 26 is moved to the rack 36 (or another defined reference measuring point) so that the eccentric 26 touches the rack 36. With the help of the Tastkopfsensorik 52 can then determine the rotational angular position of the gear 86. Subsequently, the probe head 26 is moved so that the eccentric disc 124 on the rack 36 (or another defined reference measuring point) touches. With the help of the probe sensor 52, the rotational angular position of the axle body 82 is determined.
- the rotational angular position of the gear 86 in this embodiment represents the sum of the rotational movements about the vertical axis 68 and the transverse axis 91
- the rotational angular position of the stylus 28 about the transverse axis 91 can be determined from the difference between the rotational angular positions of the two eccentric discs 124, 126.
- the angular position of the stylus 28 could be determined in other ways, for example by means of incremental encoders, which are arranged in the region of the gear 92 and in the region of the axle body 82.
- Another modification of the illustrated embodiments is that the drive torque for the adjustment of the stylus 28 is not generated by means of the rack 36 and a corresponding advancing movement of the probe 26 along the rack 36.
- a drive torque could be applied directly to the gears 66, 86 by means of an electric motor.
- such a drive motor (not shown here) would also be arranged in the region of the cross member of the portal 14.
- the gear 86 forms a gear on the drive side (access via the external teeth 94), a drive torque for adjusting the stylus 28 can be initiated. Depending on which axis of rotation of the stylus 28 is to adjust, the gear 86 cooperates with the gear 92 to transmit the drive torque to the stylus 28.
- the ball teeth 84, 100 form a locking mechanism, with the aid of the stylus 28 can be released or blocked against rotation.
- the gear 66 forms together with the lifting pins 104 - 108 and together with the tube 76 and the conical bodies 78, 80 an actuator by means of which the locking mechanism can be selectively brought from a closed position to the release position.
- the entire rotary swivel mechanism 60 does not require an integrated drive, which is why the rotary swivel mechanism 60 can be constructed very easily and can therefore be interchanged as a whole in the stylus holder of a probe 26.
- the passive rotary axes 68, 91 are located between the stylus 28 and the central probe sensor, which is why use can be made of all the advantages of a central probe sensor.
- existing, complex probes can be used without modification with the new pivoting mechanism 60. It is understood that only an adjustment in the corresponding evaluation software is required to account for the respective positioning position of the stylus 28 relative to the probe 26. Due to the central probe sensor and the preferred central position for the initiation of the drive torque, the available measurement volume is hardly affected.
- the rack 36 (or other drive mechanism for generating the drive torque) in the region of the upper end position of the probe head 26 along the Z axis, in order to keep the measuring volume largely free.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0811437-4A2A BRPI0811437A2 (pt) | 2007-05-08 | 2008-04-17 | Aparelho de medição de coordenadas para determinação de coordenadas espaciais em um objeto de medição bem como mecanismo rotativo-pivotante para esse aparelho de medição de coordenadas. |
CN200880023638XA CN101688766B (zh) | 2007-05-08 | 2008-04-17 | 用于确定测量对象上的空间坐标的坐标测量仪,以及用于该坐标测量仪的转动-摆动机构 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007022326.0 | 2007-05-08 | ||
DE102007022326.0A DE102007022326B4 (de) | 2007-05-08 | 2007-05-08 | Koordinatenmessgerät zum Bestimmen von Raumkoordinaten an einem Messobjekt sowie Dreh-Schwenk-Mechanismus für ein solches Koordinatenmessgerät |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008135144A1 true WO2008135144A1 (de) | 2008-11-13 |
Family
ID=39591623
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2008/003100 WO2008135144A1 (de) | 2007-05-08 | 2008-04-17 | Koordinatenmessgerät zum bestimmen von raumkoordinaten an einem messobjekt sowie dreh-schwenk-mechanismus für ein solches koordinatenmessgerät |
Country Status (5)
Country | Link |
---|---|
CN (1) | CN101688766B (de) |
BR (1) | BRPI0811437A2 (de) |
DE (1) | DE102007022326B4 (de) |
RU (1) | RU2451265C2 (de) |
WO (1) | WO2008135144A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010006505A1 (de) | 2010-01-28 | 2011-08-18 | Carl Zeiss Industrielle Messtechnik GmbH, 73447 | Koordinatenmessgerät mit passivem Dreh-Schwenk-Mechanismus |
CN109945816A (zh) * | 2019-04-25 | 2019-06-28 | 贵州大学 | 一种用于收获机检测作物种植间距的智能探测装置 |
US10488171B2 (en) | 2014-07-31 | 2019-11-26 | Carl Zeiss Industrielle Messtechnik Gmbh | Probe head for a coordinate measuring machine |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009049534A1 (de) | 2009-10-06 | 2011-04-07 | Carl Zeiss Industrielle Messtechnik Gmbh | Koordinatenmessgerät mit Lageänderungssensoren |
DE102010018493B4 (de) * | 2010-04-21 | 2012-12-06 | Carl Zeiss Industrielle Messtechnik Gmbh | Koordinatenmessgerät zum Bestimmen von Raumkoordinaten an einem Messobjekt sowie Tastkopf für ein solches Koordinatenmessgerät |
DE102010020654A1 (de) * | 2010-05-07 | 2011-11-10 | Carl Zeiss Industrielle Messtechnik Gmbh | Tastkopf für ein Koordinatenmessgerät zum Bestimmen von Raumkoordinaten an einem Messobjekt |
DE102010031976A1 (de) * | 2010-07-22 | 2012-01-26 | Carl Zeiss Industrielle Messtechnik Gmbh | Ermittlung der Ankopplung von Teilen an einer Maschine |
WO2013007286A1 (de) | 2011-07-08 | 2013-01-17 | Carl Zeiss Industrielle Messtechnik Gmbh | Kalibrierung und betrieb von drehvorrichtungen, insbesondere zum drehen von tastköpfen und/oder tastern von koordinatenmessgeräten |
CN102997800A (zh) * | 2012-11-07 | 2013-03-27 | 无锡市迈日机器制造有限公司 | 无间隙位移传递机构 |
DE102013105753B3 (de) | 2013-06-04 | 2014-10-02 | Carl Zeiss Industrielle Messtechnik Gmbh | Verfahren zum automatischen Aufnehmen eines Sensorkopfs und Koordinatenmessgerät |
TWI551268B (zh) * | 2013-11-22 | 2016-10-01 | 國立陽明大學 | 可攜式關節附屬動作量化裝置 |
CN106461384B (zh) | 2014-04-08 | 2020-08-11 | 尼康计量公司 | 用于计量应用的测量探测单元 |
JP6649013B2 (ja) | 2015-08-27 | 2020-02-19 | 株式会社ミツトヨ | プローブヘッド回転機構 |
CN107234524A (zh) * | 2016-03-28 | 2017-10-10 | 沈阳海默数控机床有限公司 | 一种对刨面为圆形的工件外圆面进行磨削加工的立式磨床 |
TWI604913B (zh) * | 2016-06-01 | 2017-11-11 | 致茂電子股份有限公司 | 擺動機構 |
DE102017114551B4 (de) | 2017-06-29 | 2021-12-23 | Carl Zeiss Industrielle Messtechnik Gmbh | Dreh-Schwenk-Mechanismus für ein Koordinatenmessgerät |
CN107869977B (zh) * | 2017-11-23 | 2019-10-22 | 深圳力合精密装备科技有限公司 | 一种坐标测量机测针夹持与调整机构 |
DE102018115745A1 (de) | 2018-06-29 | 2020-01-02 | Carl Zeiss Industrielle Messtechnik Gmbh | Dreh-Schwenk-Mechanismus für ein Koordinatenmessgerät |
CN109269379A (zh) * | 2018-11-09 | 2019-01-25 | 重庆庆兰实业有限公司 | 一种转向节检具 |
CN110285759B (zh) * | 2019-08-01 | 2021-01-12 | 台州市肯创机械设备有限公司 | 一种高灵敏性三坐标测量机探测机构 |
CN117169598B (zh) * | 2023-11-03 | 2024-02-02 | 无锡卓海科技股份有限公司 | 电阻测量仪 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2037436A (en) * | 1978-10-02 | 1980-07-09 | Haltronic Systems Ltd | Swivel probe |
GB2179744A (en) * | 1983-06-14 | 1987-03-11 | Gte Valeron Corp | Probe with stylus adjustment |
DE3720795A1 (de) * | 1987-06-24 | 1989-01-05 | Stiefelmayer Kg C | Geraet zum messen, anreissen, antasten, bearbeiten od. dgl. von werkstuecken im raum |
EP0317967A2 (de) * | 1987-11-26 | 1989-05-31 | Firma Carl Zeiss | Dreh-Schwenk-Einrichtung für Tastköpfe von Koordinatenmessgeräten |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1597842A (en) | 1977-02-07 | 1981-09-09 | Rolls Royce | Indexing mechanism |
GB2203837B (en) | 1987-04-06 | 1991-02-20 | Mitutoyo Corp | Apparatus and method for spatial coordinate measurement |
US5189806A (en) | 1988-12-19 | 1993-03-02 | Renishaw Plc | Method of and apparatus for scanning the surface of a workpiece |
GB9114946D0 (en) * | 1991-07-11 | 1991-08-28 | Renishaw Metrology Ltd | Probe head |
GB9413194D0 (en) * | 1994-06-30 | 1994-08-24 | Renishaw Plc | Probe head |
DE4424225A1 (de) | 1994-07-09 | 1996-01-11 | Zeiss Carl Fa | Tastkopf für Koordinatenmeßgeräte |
DE19605776A1 (de) | 1996-02-16 | 1997-08-21 | Zeiss Carl Fa | Koordinatenmeßgerät mit einem Taststift, dessen Orientierung einstellbar ist |
JP2000035325A (ja) * | 1998-07-16 | 2000-02-02 | Mitsutoyo Corp | 洗浄装置付測定機 |
DE10006753A1 (de) | 2000-02-15 | 2001-08-16 | Zeiss Carl | Dreh-Schwenkeinrichtung für den Tastkopf eines Koordinatenmeßgerätes |
GB0215152D0 (en) | 2002-07-01 | 2002-08-07 | Renishaw Plc | Probe or stylus orientation |
DE602004011544T2 (de) * | 2004-12-01 | 2009-02-05 | Tesa Sa | Motorisierter und orientierbarer Messkopf |
-
2007
- 2007-05-08 DE DE102007022326.0A patent/DE102007022326B4/de not_active Expired - Fee Related
-
2008
- 2008-04-17 CN CN200880023638XA patent/CN101688766B/zh not_active Expired - Fee Related
- 2008-04-17 RU RU2009145166/28A patent/RU2451265C2/ru not_active IP Right Cessation
- 2008-04-17 BR BRPI0811437-4A2A patent/BRPI0811437A2/pt not_active IP Right Cessation
- 2008-04-17 WO PCT/EP2008/003100 patent/WO2008135144A1/de active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2037436A (en) * | 1978-10-02 | 1980-07-09 | Haltronic Systems Ltd | Swivel probe |
GB2179744A (en) * | 1983-06-14 | 1987-03-11 | Gte Valeron Corp | Probe with stylus adjustment |
DE3720795A1 (de) * | 1987-06-24 | 1989-01-05 | Stiefelmayer Kg C | Geraet zum messen, anreissen, antasten, bearbeiten od. dgl. von werkstuecken im raum |
EP0317967A2 (de) * | 1987-11-26 | 1989-05-31 | Firma Carl Zeiss | Dreh-Schwenk-Einrichtung für Tastköpfe von Koordinatenmessgeräten |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010006505A1 (de) | 2010-01-28 | 2011-08-18 | Carl Zeiss Industrielle Messtechnik GmbH, 73447 | Koordinatenmessgerät mit passivem Dreh-Schwenk-Mechanismus |
US10488171B2 (en) | 2014-07-31 | 2019-11-26 | Carl Zeiss Industrielle Messtechnik Gmbh | Probe head for a coordinate measuring machine |
CN109945816A (zh) * | 2019-04-25 | 2019-06-28 | 贵州大学 | 一种用于收获机检测作物种植间距的智能探测装置 |
CN109945816B (zh) * | 2019-04-25 | 2024-04-30 | 贵州大学 | 一种用于收获机检测作物种植间距的智能探测装置 |
Also Published As
Publication number | Publication date |
---|---|
BRPI0811437A2 (pt) | 2014-12-16 |
CN101688766B (zh) | 2012-10-31 |
RU2451265C2 (ru) | 2012-05-20 |
RU2009145166A (ru) | 2011-06-20 |
DE102007022326B4 (de) | 2022-07-07 |
DE102007022326A1 (de) | 2008-11-13 |
CN101688766A (zh) | 2010-03-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE102007022326B4 (de) | Koordinatenmessgerät zum Bestimmen von Raumkoordinaten an einem Messobjekt sowie Dreh-Schwenk-Mechanismus für ein solches Koordinatenmessgerät | |
DE1932010C3 (de) | Vorrichtung zum Prüfen von Werkstücken | |
EP0763708B1 (de) | Koordinatenmessmaschine | |
DE69003149T2 (de) | Tastkopf. | |
DE112006003388B4 (de) | System zur Messung von Innendurchmessern einer Wellenbohrung | |
DE69207983T2 (de) | Kalibrier- und Messgerät | |
DE69619857T2 (de) | Oberflächenformvermessung | |
EP1955009B1 (de) | Vorrichtung zum bestimmen einer messgrösse an einem messobjekt | |
DE3740070A1 (de) | Dreh-schwenk-einrichtung fuer tastkoepfe von koordinatenmessgeraeten | |
EP0443422B1 (de) | Koordinatenmessgerät | |
EP2729763A1 (de) | Korrektur und/oder vermeidung von fehlern bei der messung von koordinaten eines werkstücks | |
DE202012011761U1 (de) | Vorrichtung zur Überprüfung eines Kettenrades | |
DE2242355B1 (de) | Elektronischer Mehrkoordinatentaster | |
EP2199732A1 (de) | Vorrichtung mit Rauheitsmesstaster und entsprechende Verfahren | |
EP2916996A1 (de) | Werkzeugmaschine und verfahren zur vermessung eines werkstücks | |
DE112014006850B4 (de) | Tastkopf für ein Koordinatenmessgerät | |
EP1589317A1 (de) | Vorrichtung mit abnehmbarem Messtaster und Messgerät mit einer solchen Vorrichtung | |
DE602004011544T2 (de) | Motorisierter und orientierbarer Messkopf | |
DE19510456C2 (de) | Verfahren zur Konfigurierung einer Vorrichtung zur Befestigung von Bauteilen auf einer Maschine sowie Vorrichtung zur Durchführung dieses Verfahrens | |
DE202017105125U1 (de) | Vorrichtung mit Tastsystem und mit berührungslos arbeitendem Sensor | |
DE102016201466B3 (de) | Dreheinheit für ein Koordinatenmessgerät | |
DE102017105814B3 (de) | System zum Messen der Rauheit einer Oberfläche eines Werkstücks | |
DE10123496A1 (de) | Verzahnungsmessmaschine | |
DE19960191A1 (de) | Verfahren zur Sicherung eines Koordinatenmessgerätes vor Bedienfehlern | |
DE102010006505B4 (de) | Koordinatenmessgerät mit passivem Dreh-Schwenk-Mechanismus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200880023638.X Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 08748971 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2077/MUMNP/2009 Country of ref document: IN |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2009145166 Country of ref document: RU |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 08748971 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: PI0811437 Country of ref document: BR Kind code of ref document: A2 Effective date: 20091106 |