DE19826641B4 - Devices and methods related to fiber probes - Google Patents
Devices and methods related to fiber probes Download PDFInfo
- Publication number
- DE19826641B4 DE19826641B4 DE1998126641 DE19826641A DE19826641B4 DE 19826641 B4 DE19826641 B4 DE 19826641B4 DE 1998126641 DE1998126641 DE 1998126641 DE 19826641 A DE19826641 A DE 19826641A DE 19826641 B4 DE19826641 B4 DE 19826641B4
- Authority
- DE
- Germany
- Prior art keywords
- fiber probe
- measuring machine
- probe
- fiber
- camera
- 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.)
- Expired - Lifetime
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
- G01B11/005—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates coordinate measuring machines
- G01B11/007—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates coordinate measuring machines 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
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
Vorrichtung an einer Mehrkoordinaten-Messmaschine, wobei die Messmaschine einen Faser-Messtaster kleinster Bauart und eine auf einer Achse verfahrbare Kamera zu dessen optischer Erfassung aufweist, wobei die Vorrichtung den Faser-Messtaster aufnimmt und wobei eine automatische Fokussierung erfolgt, für die der Faser-Messtaster auf einer weiteren Achse separat von der Kamera verfahrbar angeordnet ist.contraption at a multi-coordinate measuring machine, wherein the measuring machine a Fiber probe of the smallest design and one movable on an axis Camera for its optical detection, wherein the device picking up the fiber probe and having an automatic focus done, for the fiber probe on another axis separate from the Camera is arranged movable.
Description
Die Erfindung betrifft Vorrichtungen an einer Mehrkoordinaten-Messmaschine, wobei die Messmaschine einen Faser-Messtaster kleinster Bauart und eine auf einer Achse verfahrbare Kamera zu dessen optischer Erfassung aufweist, wie auch ein Verfahren zur Reinigung eines Faser-Messtasters kleinster Bauart ebenso wie Verwendungen derartiger Vorrichtungen.The The invention relates to devices on a multi-coordinate measuring machine, the measuring machine has a fiber probe of the smallest design and a movable on an axis camera for its optical detection As well as a method for cleaning a fiber probe smallest Design as well as uses of such devices.
Bereits auf den Fachmessen MICROTECNIC im April 1998 in Zürich/Schweiz sowie CONTROL im Mai 1998 in Sinsheim/Deutschland wurden mechanisch antastende Messtaster kleinster Bauart für Mehrkoordinaten-Messmaschinen vorgestellt, welche optisch mittels einer Kamera ausgewertet werden.Already at the trade fairs MICROTECNIC in April 1998 in Zurich / Switzerland and CONTROL in May 1998 in Sinsheim / Germany became mechanical Touch probes of the smallest design for multi-coordinate measuring machines presented, which are visually evaluated by a camera.
Diese Messtaster bestehen aus einer Glasfaser, an deren einem Ende eine Kugel kleinsten Durchmessers angebracht ist. An dem anderen Ende wird Licht in die Faser eingespeist, welches zur Beleuchtung der Kugel benötigt wird.These Measuring probes consist of a glass fiber, at one end of which a Ball smallest diameter is attached. At the other end will be Light is fed into the fiber, which is used to illuminate the sphere needed becomes.
Die beleuchtete Kugel ist in der Fokusebene vor der Kamera der Mehrkoordinaten-Messmaschine angebracht, so dass diese Kugel im Kamerabild schart abgebildet wird. Mittels dieser Kugel können zu vermessende Gegenstände angetastet werden. Ein Auslenken der Kugel bei einer Antastung wird mittels des Kamerabildes, welches die Kugel scharf abbildet, erkannt und ausgewertet.The illuminated ball is mounted in the focal plane in front of the camera of the multi-coordinate measuring machine, so that this ball is mapped in the camera image. through this ball can too measuring objects be touched. A deflection of the ball in a probing is by means of of the camera image sharply imaging the sphere is detected and evaluated.
Auf
diesem Prinzip basierende Faser-Messtaster sind beispielsweise aus
der
Diese Faser-Messtaster sind, bedingt durch das verwendete Material Glas, sehr empfindlich gegen mechanische Beschädigungen. Nach dem Auswechseln solcher Taster kleinster Bauart nach einer Beschädigung muß die Tastkugel, welche sich am Ende der Glasfaser befindet, neu in die Schärfeebene vor der Kamera manuell einjustiert werden.These Fiber probes are due to the material used glass, very sensitive to mechanical damage. After replacing Such probe smallest design after damage must the Tastkugel, which itself At the end of the fiber is located, new to the focal plane in front of the camera manually be adjusted.
Nachteilig erweisen sich auch Anziehungskräfte statischer Art auf den Messtaster, welche ein Haften der Kugel am Messobjekt nach einer Antastung zur Folge haben. Bedingt durch kleinste Schmutzpartikel, welche an dem Taster haften, können Fehlantastungen erfolgen und somit die Messergebnisse verfälscht werden.adversely also attracts prove static type on the probe, which is a sticking of the ball on the Have the measurement object after a probing result. Due to the smallest dirt particles, which stick to the button can Fehlantastungen done and thus the measurement results are falsified.
Durch
die
Der Erfindung liegt die Aufgabe zugrunde, Vorrichtungen an einer Mehrkoordinaten-Messmaschine, die einen Faser-Messtaster kleinster Bauart und eine in Vertikalrichtung verfahrbare Kamera zu dessen optischer Erfassung aufweist, zu schaffen, so dass Justage, Beleuchtung, Erkennbarkeit, Reinigung, Stabilität und Verfügbarkeit der bereits bekannten Faser-Messtaster kleinster Bauart verbessert werden.Of the The invention is based on the object, devices on a multi-coordinate measuring machine, the one fiber probe smallest design and one in the vertical direction moveable camera for its optical detection has to provide allowing adjustment, lighting, visibility, cleaning, stability and availability the already known fiber probe smallest design can be improved.
Die Lösung besteht in den Merkmalen der Vorrichtungen gemäß den Patentansprüchen 1, 3, 9 und 11 sowie in Verwendungen gemäß den Patentansprüchen 7 und 8. Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen gekennzeichnet. Ein erfindungsgemäßes Verfahren zur Reinigung eines Faser-Messtasters ist in Patentanspruch 12 gekennzeichnet.The solution consists in the features of the devices according to claims 1, 3, 9 and 11 and in uses according to claims 7 and 8. Further advantageous embodiments of the invention are in the Subclaims characterized. An inventive method for Cleaning a fiber probe is characterized in claim 12.
Die Erfindungen stellen deutliche Verbesserungen bezüglich Justage, Beleuchtung, Erkennbarkeit, Reinigung, Stabilität und Verfügbarkeit der bereits bekannten Faser-Messtaster kleinster Bauart dar.The Inventions provide significant improvements in terms of adjustment, lighting, Recognition, cleaning, stability and availability of the already known Fiber probe smallest design dar.
Zur automatischen Fokussierung der Tastkugel mit der Kamera nach einem Wechsel des Faser-Messtasters ist dieser auf einer weiteren separat zur Kamera verfahrbaren Achse angeordnet. Bei herkömmlichen Systemen erfolgt diese Fokussierung manuell mittels mechanischer Justage.For automatic focusing of the probe ball with the camera after a change of the Fa This probe is arranged on another axis which can be moved separately from the camera. In conventional systems, this focusing is done manually by means of mechanical adjustment.
Zur Überwindung der statischen Anziehungskräfte beim Lösen der Messkugel nach einem Antasten wird die Kugel von oben kurzzeitig mit Luft überströmt. Diese Luft wird durch eine Kanüle zugeführt, welche auch gleichzeitig den Faser-Messtaster mit angebrachter Messkugel führen kann. Ein Flattern der Messkugel nach einer Antastung wird so vermieden.To overcome of static attractions when loosening the measuring ball after a touch, the ball is briefly from above overflowed with air. These Air is passing through a cannula supplied which also simultaneously the fiber probe with attached measuring ball to lead can. A fluttering of the measuring ball after a probing is thus avoided.
Diese zuvor beschriebene Luftzufuhr kann auch zum Reinigen des Messtasters verwendet werden, indem auf dem Messtaster sitzende Schmutzpartikel mit einem Luftstoß weggeblasen werden.These previously described air supply can also be used to clean the probe be used by dirt particles on the probe blown away with a puff of air become.
Des weiteren kann die Messkugel gereinigt werden, indem sie – mittels der zur Verfügung stehenden verfahrbaren Achsen der Koordinaten-Messmaschine – in ein Reinigungsbad, welches wahlweise auch ein Ultraschall-Reinigungsbad sein kann, getaucht wird.Of Furthermore, the measuring ball can be cleaned by - by the available stationary movable axes of the coordinate measuring machine - in Cleaning bath, which optionally also an ultrasonic cleaning bath can be dipped.
Zur Vermeidung der Bruchgefahr des bisweilen aus Glas hergestellten Messtasters ist dieser aus Metall herzustellen. Die Beleuchtung der an dem Messtaster angebrachten Kugel kann dann wahlweise von unten gegen die Kamera zur Erzeugung eines Schattenbildes erfolgen, oder aber auch von oben durch eine Art Ringlicht, welches um die Tastkugel angeordnet ist.to Avoiding the risk of breakage of the sometimes made of glass Probe is made of metal. The lighting the attached to the probe ball can then optionally from down against the camera to create a silhouette, or also from above by a kind of ring light, which around the Tastkugel is arranged.
Abgebrochene Fasertaster aus Glas können auch direkt in der Maschine erneuert werden, indem die Glasfaser nachgeschoben wird und mittels Erhitzen des vorderen Endes der Faser eine neue Messkugel angeschmolzen wird.aborted Fiber probes made of glass can also be renewed directly in the machine by pushing the glass fiber and by heating the front end of the fiber a new Measuring ball is melted.
Claims (12)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1998126641 DE19826641B4 (en) | 1998-06-17 | 1998-06-17 | Devices and methods related to fiber probes |
EP99111646A EP0965816A3 (en) | 1998-06-17 | 1999-06-16 | Device to measure the geometrical contour of an object |
US09/335,211 US6240651B1 (en) | 1998-06-17 | 1999-06-17 | Coordinate measuring machine having a non-sensing probe |
US09/841,514 US6477784B2 (en) | 1998-06-17 | 2001-04-24 | Coordinate measuring machine having a non-sensing probe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1998126641 DE19826641B4 (en) | 1998-06-17 | 1998-06-17 | Devices and methods related to fiber probes |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19826641A1 DE19826641A1 (en) | 1999-12-30 |
DE19826641B4 true DE19826641B4 (en) | 2005-09-29 |
Family
ID=7870956
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1998126641 Expired - Lifetime DE19826641B4 (en) | 1998-06-17 | 1998-06-17 | Devices and methods related to fiber probes |
Country Status (1)
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DE (1) | DE19826641B4 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006002619B3 (en) * | 2006-01-19 | 2007-07-26 | Forschungszentrum Karlsruhe Gmbh | Device for measuring structures of an object |
JP2009053052A (en) | 2007-08-27 | 2009-03-12 | Mitsutoyo Corp | Shape measuring machine and its probe |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29710242U1 (en) * | 1997-06-12 | 1997-08-07 | Trapet, Eugen, Dr., 38176 Wendeburg | Probe for measuring geometric structures |
DE19805892A1 (en) * | 1997-06-12 | 1998-12-24 | Werth Messtechnik Gmbh | Method and arrangement for measuring structures of an object |
DE19847711A1 (en) * | 1998-05-29 | 2000-02-17 | Werth Messtechnik Gmbh | Arrangement for measuring structures of an object |
-
1998
- 1998-06-17 DE DE1998126641 patent/DE19826641B4/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29710242U1 (en) * | 1997-06-12 | 1997-08-07 | Trapet, Eugen, Dr., 38176 Wendeburg | Probe for measuring geometric structures |
DE19805892A1 (en) * | 1997-06-12 | 1998-12-24 | Werth Messtechnik Gmbh | Method and arrangement for measuring structures of an object |
DE19847711A1 (en) * | 1998-05-29 | 2000-02-17 | Werth Messtechnik Gmbh | Arrangement for measuring structures of an object |
Also Published As
Publication number | Publication date |
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DE19826641A1 (en) | 1999-12-30 |
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OP8 | Request for examination as to paragraph 44 patent law | ||
8122 | Nonbinding interest in granting licences declared | ||
8364 | No opposition during term of opposition | ||
R082 | Change of representative |
Representative=s name: KNEFEL, CORDULA, DIPL.-PHYS., DE |
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R071 | Expiry of right |