DE3906408A1 - Three-coordinate probe (tracer) - Google Patents

Three-coordinate probe (tracer)

Info

Publication number
DE3906408A1
DE3906408A1 DE19893906408 DE3906408A DE3906408A1 DE 3906408 A1 DE3906408 A1 DE 3906408A1 DE 19893906408 DE19893906408 DE 19893906408 DE 3906408 A DE3906408 A DE 3906408A DE 3906408 A1 DE3906408 A1 DE 3906408A1
Authority
DE
Germany
Prior art keywords
bearing
measuring
movements
probe tip
mechanical displacement
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.)
Granted
Application number
DE19893906408
Other languages
German (de)
Inventor
Juergen Dr Zorn
Klaus Pfister
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19883842032 external-priority patent/DE3842032C1/en
Application filed by Individual filed Critical Individual
Priority to DE19893906408 priority Critical patent/DE3906408A1/en
Publication of DE3906408A1 publication Critical patent/DE3906408A1/en
Granted legal-status Critical Current

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

Abstract

The invention relates to a device for detecting and representing the spatial deflection of a measuring prod according to Patent Application P3842032.5. The deflection movement is fed to the position pickups (displacement sensors) as a combination of pivoting movements and longitudinal movements. Either a rotatably mounted ball or a guide which is suspended on a universal joint such that it can rotate about two axes simultaneously permits the transmission of the longitudinal movements in addition to the pivoting movements.

Description

Die Erfindung betrifft einen Drei-Koordinaten-Meßtaster zur Messung von Verformungen an Strukturen, z.B. im Fahrzeug- oder Flugzeugbau, nach Patentanmeldung P 38 42 032.5. Dieses beschreibt einen Drei- Koordinaten-Meßtaster, bei dem die Auslenkbewegungen der Meßtast­ spitze als gleichzeitig und unabhängig voneinander erfolgende Schwenk- und Längsbewegungen auf die Wegaufnehmer übertragen werden. Hierzu wird nach P 38 42 032.5 eine drehbar gelagerte Kugel mit einer Längsführung eingesetzt.The invention relates to a three-coordinate probe for measurement of deformations on structures, e.g. in vehicle or aircraft construction, according to patent application P 38 42 032.5. This describes a three Coordinate probe, in which the deflection of the probe top as occurring simultaneously and independently of each other Swiveling and longitudinal movements are transferred to the displacement transducer. According to P 38 42 032.5, a rotatably mounted ball is used a longitudinal guide used.

Gegenstand der Zusatzanmeldung ist eine Weiterentwicklung des Meß­ tasters dahingehend, daß die Funktion der drehbar gelagerten Kugel mit Längsführung durch eine Axialführung 18, die in zwei Achsen kar­ danisch aufgehängt ist, ralisiert wird, was bei kleinen Serien eine preiswerte Fertigung ermöglicht.The subject of the additional application is a further development of the probe in that the function of the rotatably mounted ball with longitudinal guidance is realized by an axial guide 18 , which is suspended danically in two axes, which enables inexpensive production in small series.

Der Drehbereich um die beiden Achsen in kardanischer Anordnung (bekannte Technik) ist zweckmäßig durch Anschläge zu begrenzen, weil nur Schwenkbewegungen mit relativ geringen Winkelausschlägen auftre­ ten; der Schwenkbereich um beide Achsen sollte gleich groß sein. Die Ausführung der Lager (Spitzen-, Wälz- oder Gleitlager) wird sich nach den Auslenkungskräften richten, desgleichen die Art der Lagerung des Taststiftes 2 in der Längsführung, in der Zeichnung als Führungshülse ausgebildet. Bei schwachen Auslenkräften ist z.B. einer axial wirksamen Kugellagerung der Vorzug vor einer axial gleitenden Lagerung zu geben. The range of rotation around the two axes in a cardan arrangement (known technology) is expediently limited by stops, because only pivoting movements with relatively small angular deflections occur; the swivel range around both axes should be the same. The design of the bearings (tip, roller or slide bearings) will depend on the deflection forces, as will the type of mounting of the stylus 2 in the longitudinal guide, shown in the drawing as a guide sleeve. In the case of weak deflection forces, for example, an axially effective ball bearing is preferred over an axially sliding bearing.

Bei Spitzenlagerung der kardanischen Aufhängung ist es vorteilhaft, federnde Elemente 19 einzusetzen, durch Vorspannung bleibt die Lage­ rung spielfrei.When the gimbal is mounted at the top, it is advantageous to use resilient elements 19 ; the position remains free of play by pretensioning.

Claims (3)

1. Vorrichtung zum Messen der mechanischen Verschiebung einer Tast­ spitze in x-, y- und z-Richtung mit nachgeordneter Entkopplung und Auswertung der Meßsignale mittels Rechner nach Patentanmeldung P 38 42 032.5, gekennzeichnet dadurch, daß zur gleichzeitigen und unabhängigen Übertragung der räumlichen Auslenkbewegung einer Tast­ spitze der Taststift (2) bei seinen Längsbewegungen in einer Axial­ lagerung (18) geführt wird, die zur Übertragung der Schwenkbewegungen kardanisch in zwei Achsen gelagert ist (Figur).1. Device for measuring the mechanical displacement of a probe tip in the x, y and z directions with subsequent decoupling and evaluation of the measurement signals by means of a computer according to patent application P 38 42 032.5, characterized in that a for simultaneous and independent transmission of the spatial deflection movement The tip of the stylus ( 2 ) is guided during its longitudinal movements in an axial bearing ( 18 ) which is gimbal-mounted in two axes for transmitting the pivoting movements (Figure). 2. Vorrichtung zum Messen der mechanischen Verschiebung einer Tastspitze nach Anspruch 1, gekennzeichnet dadurch, daß die kardanische Lagerung durch Vorspannung mittels federnder Elemente (19) spielfrei ist.2. Device for measuring the mechanical displacement of a probe tip according to claim 1, characterized in that the cardanic bearing is preloaded by means of resilient elements ( 19 ) without play. 3. Vorrichtung zum Messen der mechanischen Verschiebung einer Tastspitze nach Anspruch 1, gekennzeichnet dadurch, daß die Axiallagerung (18) zur Führung der Längsbewegung des Taststiftes (2) als spielarmes Gleitlager oder als Linearkugellager (Kugellagerumlaufführung, Kugel­ hülse) ausgeführt ist.3. Device for measuring the mechanical displacement of a probe tip according to claim 1, characterized in that the axial bearing ( 18 ) for guiding the longitudinal movement of the stylus ( 2 ) is designed as a low-play slide bearing or as a linear ball bearing (ball bearing recirculation guide, ball sleeve).
DE19893906408 1988-12-14 1989-03-01 Three-coordinate probe (tracer) Granted DE3906408A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19893906408 DE3906408A1 (en) 1988-12-14 1989-03-01 Three-coordinate probe (tracer)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19883842032 DE3842032C1 (en) 1988-12-14 1988-12-14 Ball-controlled 3-coordinate probe
DE19893906408 DE3906408A1 (en) 1988-12-14 1989-03-01 Three-coordinate probe (tracer)

Publications (1)

Publication Number Publication Date
DE3906408A1 true DE3906408A1 (en) 1990-09-13

Family

ID=25875130

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19893906408 Granted DE3906408A1 (en) 1988-12-14 1989-03-01 Three-coordinate probe (tracer)

Country Status (1)

Country Link
DE (1) DE3906408A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4231989C1 (en) * 1992-08-13 1994-01-20 Datron Electronic Gmbh Three=dimensional contoured surface probe - supports measuring probe by vertical Z=axis linear bearing via elastic spring rod which provides resetting force towards rest position aligned with Z=axis
DE10241087A1 (en) * 2002-08-29 2004-03-11 Blum-Novotest Gmbh Multidirectional coordinate measurement probe has spring wire rod fixed to allow probe tilting with slide constraint at upper end

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2440692B1 (en) * 1974-08-24 1975-04-30 Manfred Dr.-Ing. Kochsiek Three-coordinate displacement transducer
DE2949439A1 (en) * 1979-01-31 1980-08-14 Jenoptik Jena Gmbh MULTI-AXIS MEASURING BUTTON

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2440692B1 (en) * 1974-08-24 1975-04-30 Manfred Dr.-Ing. Kochsiek Three-coordinate displacement transducer
DE2949439A1 (en) * 1979-01-31 1980-08-14 Jenoptik Jena Gmbh MULTI-AXIS MEASURING BUTTON

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4231989C1 (en) * 1992-08-13 1994-01-20 Datron Electronic Gmbh Three=dimensional contoured surface probe - supports measuring probe by vertical Z=axis linear bearing via elastic spring rod which provides resetting force towards rest position aligned with Z=axis
DE10241087A1 (en) * 2002-08-29 2004-03-11 Blum-Novotest Gmbh Multidirectional coordinate measurement probe has spring wire rod fixed to allow probe tilting with slide constraint at upper end
DE10241087B4 (en) * 2002-08-29 2006-06-08 Blum-Novotest Gmbh Multidirectional probe
DE10262188B4 (en) * 2002-08-29 2010-05-12 Blum-Novotest Gmbh Multidirectional probe

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