WO2003036226A1 - Positionsmessgerät - Google Patents
Positionsmessgerät Download PDFInfo
- Publication number
- WO2003036226A1 WO2003036226A1 PCT/EP2002/011544 EP0211544W WO03036226A1 WO 2003036226 A1 WO2003036226 A1 WO 2003036226A1 EP 0211544 W EP0211544 W EP 0211544W WO 03036226 A1 WO03036226 A1 WO 03036226A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- measuring device
- position measuring
- base body
- movable element
- detector
- 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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
-
- 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
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B9/00—Measuring instruments characterised by the use of optical techniques
- G01B9/02—Interferometers
- G01B9/02015—Interferometers characterised by the beam path configuration
- G01B9/02029—Combination with non-interferometric systems, i.e. for measuring the object
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B2290/00—Aspects of interferometers not specifically covered by any group under G01B9/02
- G01B2290/15—Cat eye, i.e. reflection always parallel to incoming beam
Definitions
- the invention relates to a position measuring device for detecting the position of a movable element relative to a base body.
- a position measuring device is known from DE 195 34 535 C2 and DE 35 04 464 C1, in which the spatial position of a movable element relative to a base body is determined by means of a plurality of spatially arranged telescopic rods on the basis of length measurements in the telescopic rods.
- DE 35 04 464 C1 specifies the use of such a position measuring device to check the positioning accuracy of a program-controlled device arm.
- the disadvantage of these position measuring devices is the arrangement of a plurality of telescopic rods in order to determine the spatial position of the movable element in three degrees of freedom.
- the telescopic rods must be arranged in a predetermined position in relation to one another in order to determine the spatial position of the movable part from the relationship between the lengths of the telescopic rods according to a predetermined calculation rule.
- the object of the invention is therefore to simplify the construction of a position measuring device for detecting the spatial position of a movable element relative to a base body.
- An advantage of the invention is seen in the fact that with a single telescopic leg with a simple construction, the movement of the movable element to be measured can be measured in at least three degrees of freedom, namely in one translatory and two rotatory.
- FIG. 1 shows a position measuring device for measuring the spatial position of a moving element
- FIG. 2 the functional principle of the angle measuring device of the position measuring device according to FIG. 1,
- FIG. 3 shows another position measuring device for measuring the spatial position of a moving element with interferometric length measurement
- Figure 4 shows a use of the position measuring device for
- Figure 5 shows a use of the position measuring device in a machine.
- FIG. 1 the basic structure of a position measuring device 10 according to the invention is shown schematically. It consists of a base body 1 with a joint 2, via which a support 3 is pivotally mounted on the base body 1.
- the support 3 is telescopic and consists of at least two telescopic tubes 3.1 and 3.2.
- One tube 3.1 is mounted as a telescopic part on the joint 2 and the other tube 3.2 is pivotally supported on the element 5 to be measured via a further joint 4.
- a length measuring device 6 This consists of a scale 6.1, which is attached to one of the tubes 3.1 and a scanning unit 6.2, which is attached to the other tube 3.2.
- Several such length measuring devices can be used for the redundant length measurement, in particular they are arranged symmetrically to a central connecting line lying between the two joints 2, 4, as shown in DE 197 03735 C2 in FIG. 5.
- the lateral displacement of the element 5 relative to the base body 1 leads to a pivoting movement of the support 3 relative to the base body 1.
- This pivoting movement is measured by means of an angle measuring device 7. It consists of a light source 7.1, a detector 7.2 and a grating 7.3.
- the light source 7.1 is fixed in the pivot point D4 of the joint 4 on the element 5 and emits a divergent beam L along the support 3 (FIG. 2).
- the detector 7.2 is located within the light beam L at the pivot point D2 of the joint 2 on the base body 1.
- the grid 7.3 is also attached to the base body 1 at a fixed distance in front of the detector 7.2 and is thus permanently assigned to the detector 7.2.
- the beam path for the angle measurement runs between the movable element 5 and the base body 1.
- the light source 7.1 is arranged in one of the pivot points D2, D4 and the center of gravity of the light-sensitive elements of the detector 7.2 in the other pivot point D4, D2.
- the light source 7.1 and the detector 7.2 can also be arranged in a pivot point D2, D4 and a retroreflective element in the other pivot point D4, D2. Beam separation is advantageous here, so that the light beam runs through the grating 7.3 only in one direction.
- the detector 7.2 or the light source 7.1 is then located at the location of the mirrored or imaged by the beam splitter Pivot point D2 or D4.
- the grating 7.3 is spatially assigned to either the light source 7.1 or the detector 7.2.
- the grating 7.3 a two-dimensional structure such as a two-dimensional crossed grating, so that when illuminating a two-dimensional intensity pattern M is created, the position of which relative to the detector 7.2 is a measure of the angle of the element 5 relative to the base body 1.
- the detector 7.2 preferably consists of a plurality of light-sensitive elements for generating a plurality of electrical sinusoidal scanning signals which are phase-shifted with respect to one another.
- the center of gravity of the light-sensitive elements for generating a scanning signal lies in the example shown in the pivot point D2.
- FIG. 2 shows the principle of angle measurement known per se from WO 01/38828 A1 using a one-dimensional grating 7.3. With regard to details of the principle, reference is expressly made to the disclosure of WO 01/38828 A1.
- the joints 2 and 4 are cardanic suspensions or magnetically preloaded, play-free ball joints, as described in DE 35 04464 C1 mentioned in the introduction.
- the support 3 advantageously forms a longitudinal guide of the scanning unit 6.2 with respect to the scale 6.
- the support 3 also forms a cover for the angle measuring device 7 and thus protects against extraneous light and against environmental influences.
- FIG. 3 shows a further exemplary embodiment of a position measuring device 100.
- An interferometer 60 is used here as the length measuring device. It consists, for example, of a laser 61, a beam splitter 62 and an optical fiber 63 with ball head 64 as the light source. The ball head 64 is located at the pivot point D4.
- the diverging light beam L arrives at a beam splitter 65 to generate two light components L1 and L2.
- the one light component L1 is used for the angle measurement described above, in that the diverging light beam L1 is modulated by the grating 7.3 as a function of the angle and the intensity pattern M is detected by the detector 7.2.
- the other light component L2 reaches a retroreflector 66, is reflected there and is coupled back into the optical fiber 63.
- the evaluation of the reflected light beam L2 and interferential determination of the longitudinal displacement of the movable element 5 relative to the base body 1 along the support 3 (not shown in FIG. 3) is carried out in a manner known per se
- the center of the retroreflector 66 is located in the pivot point D2 and the detector 7.2 in the image D2 1 of the pivot point D2 generated by the beam splitter 65.
- the reversal is also possible in that the detector 7.2 is then located in the pivot point D2 and the center point of the retroreflector 66 in the image D2 '.
- the position measuring devices 10, 100 described above are advantageously used to check the positioning accuracy of a program-controlled machine part, in that the movable element 5 is fixed on the program-controlled machine part, for example an arm of a robot or a spindle of a machine tool, and the base body 1 on a base part of the machine, that is, the workpiece carrier of a machine tool is fixed.
- the spindle 5 'of a machine tool and the workpiece support 1 1 is shown with dashed lines schematically in FIG. 1
- FIG. 4 shows the use of the position measuring devices 10 and 100 described above for detecting a moving element 5 in six degrees of freedom.
- three telescopic position measuring devices 10 and 100 are on the one hand articulated on the base body 1 and on the other hand articulated on the element 5.
- a spindle carrier 8 can be adjusted in terms of its spatial position and orientation via a plurality of struts 9 variable in length.
- the spindle support 8 can be pivoted on all sides via a central column 11 and is variable in length on the base body 1.
- the inclination of the central column 11 and thus the orientation of the spindle carrier 8 with respect to the pivot point D2 and the longitudinal displacement of the spindle carrier 8 in the direction of the longitudinal axis of the central column 11 can be measured by means of a position measuring device 10 or 100 according to the invention.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/493,153 US7274464B2 (en) | 2001-10-23 | 2002-10-16 | Position measuring device |
JP2003538681A JP4377229B2 (ja) | 2001-10-23 | 2002-10-16 | 位置測定装置 |
EP02782919.1A EP1442269B1 (de) | 2001-10-23 | 2002-10-16 | Positionsmessgerät |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10151563A DE10151563A1 (de) | 2001-10-23 | 2001-10-23 | Positionsmessgerät |
DE10151563.4 | 2001-10-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003036226A1 true WO2003036226A1 (de) | 2003-05-01 |
Family
ID=7702992
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/011544 WO2003036226A1 (de) | 2001-10-23 | 2002-10-16 | Positionsmessgerät |
Country Status (5)
Country | Link |
---|---|
US (1) | US7274464B2 (de) |
EP (1) | EP1442269B1 (de) |
JP (1) | JP4377229B2 (de) |
DE (1) | DE10151563A1 (de) |
WO (1) | WO2003036226A1 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007144573A1 (en) * | 2006-06-16 | 2007-12-21 | Renishaw Plc | Metrology apparatus |
WO2007144587A1 (en) * | 2006-06-16 | 2007-12-21 | Renishaw Plc | Extendable leg assembly for position measurement apparatus |
DE102004056726B4 (de) * | 2004-11-19 | 2014-12-24 | Dr. Johannes Heidenhain Gmbh | Verfahren und Vorrichtung zur Bestimmung der räumlichen Lage eines ersten Objektes bezüglich eines zweiten Objektes |
US10359267B2 (en) | 2015-02-13 | 2019-07-23 | The Victaulic Company Of Japan Limited | Behavior inspection apparatus and behavior inspection method for extensible flexible pipe joint |
CN110487158A (zh) * | 2019-09-02 | 2019-11-22 | 太原科技大学 | 一种联轴器对中检测装置 |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
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FR2911956B1 (fr) * | 2007-01-29 | 2009-05-08 | Hispano Suiza Sa | Dispositif de mesure de la position d'un piston dans un cylindre, ensemble d'un cylindre, d'un piston et d'un tel dispositif et moteur d'aeronef comprenant un tel ensemble |
US20090056440A1 (en) * | 2007-07-10 | 2009-03-05 | Lynn Vendl | Adjustable measuring cup |
DE102008005384A1 (de) * | 2008-01-22 | 2009-07-23 | Dr. Johannes Heidenhain Gmbh | Längenmesseinrichtung |
US9618369B2 (en) * | 2008-08-26 | 2017-04-11 | The University Court Of The University Of Glasgow | Uses of electromagnetic interference patterns |
DE102010019656B4 (de) * | 2010-05-03 | 2016-09-01 | Etalon Ag | Messgerät |
US20150160082A1 (en) * | 2012-07-20 | 2015-06-11 | Advanced Test And Automation Inc. | System and method for measuring torque |
US10105837B2 (en) * | 2013-01-25 | 2018-10-23 | The Boeing Company | Tracking enabled extended reach tool system and method |
JP6284771B2 (ja) * | 2013-01-29 | 2018-02-28 | 株式会社ミツトヨ | パラレル機構 |
DE102015009393B4 (de) * | 2015-07-15 | 2019-07-04 | Gerhard Pfeifer | Wegaufnehmeranordnung sowie Crashtest-Dummy |
TWI585363B (zh) * | 2015-12-01 | 2017-06-01 | 國立清華大學 | 應用於量測之雙球桿系統及其誤差補償方法 |
KR101860927B1 (ko) * | 2017-11-09 | 2018-05-24 | 주식회사 흥찬엔지니어링 | 교량 재하 시험 장치 |
KR101864849B1 (ko) * | 2017-11-09 | 2018-06-05 | 주식회사 신우기술 | 교량 재하 시험 장치 |
DE102019116280B3 (de) * | 2019-06-14 | 2020-12-17 | Etalon Ag | Verfahren und Vorrichtung zum Bestimmen einer Länge |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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DE3504464C1 (de) | 1985-02-09 | 1986-04-17 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München | Transportables Meßgerät zur Überprüfung der Positioniergenauigkeit eines programmgesteuerten Gerätearmes |
DE19703735A1 (de) | 1997-01-31 | 1998-08-06 | Leitz Brown & Sharpe Mestechni | Längenveränderliches Element |
US5909939A (en) | 1995-09-18 | 1999-06-08 | Leitz-Brown & Sharpe Messtechnik Gmbh | High accuracy coordinate measuring machine having a plurality of length-adjustable legs |
WO2001038828A1 (de) | 1999-11-26 | 2001-05-31 | Dr. Johannes Heidenhain Gmbh | Winkelmesssystem |
Family Cites Families (17)
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DE2240968A1 (de) * | 1972-08-21 | 1974-03-07 | Leitz Ernst Gmbh | Optisches verfahren zur messung der relativen verschiebung eines beugungsgitters sowie einrichtungen zu seiner durchfuehrung |
DE2549218A1 (de) * | 1974-11-05 | 1976-05-06 | Secretary Industry Brit | Optisches geraet zum bestimmen von achsen |
US4373804A (en) * | 1979-04-30 | 1983-02-15 | Diffracto Ltd. | Method and apparatus for electro-optically determining the dimension, location and attitude of objects |
NO164946C (no) * | 1988-04-12 | 1990-11-28 | Metronor As | Opto-elektronisk system for punktvis oppmaaling av en flates geometri. |
JP2862417B2 (ja) * | 1990-11-16 | 1999-03-03 | キヤノン株式会社 | 変位測定装置及び方法 |
US5198663A (en) * | 1991-04-03 | 1993-03-30 | Mitutoyo Corporation | Angular velocity sensor with displacement scale and sensor means |
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US5765444A (en) * | 1995-07-10 | 1998-06-16 | Kensington Laboratories, Inc. | Dual end effector, multiple link robot arm system with corner reacharound and extended reach capabilities |
DE19621195C1 (de) * | 1996-05-25 | 1997-08-21 | Leica Ag | Verfahren und Vorrichtung zur Richtungsbestimmung zu einem Objekt |
US5944476A (en) * | 1997-03-26 | 1999-08-31 | Kensington Laboratories, Inc. | Unitary specimen prealigner and continuously rotatable multiple link robot arm mechanism |
US6126381A (en) * | 1997-04-01 | 2000-10-03 | Kensington Laboratories, Inc. | Unitary specimen prealigner and continuously rotatable four link robot arm mechanism |
US6155768A (en) * | 1998-01-30 | 2000-12-05 | Kensington Laboratories, Inc. | Multiple link robot arm system implemented with offset end effectors to provide extended reach and enhanced throughput |
US20090168111A9 (en) * | 1999-09-01 | 2009-07-02 | Hell Gravure Systems Gmbh | Printing form processing with fine and coarse engraving tool processing tracks |
JP4531965B2 (ja) * | 2000-12-04 | 2010-08-25 | 株式会社トプコン | 振れ検出装置、振れ検出装置付き回転レーザ装置及び振れ検出補正装置付き位置測定設定システム |
-
2001
- 2001-10-23 DE DE10151563A patent/DE10151563A1/de not_active Withdrawn
-
2002
- 2002-10-16 US US10/493,153 patent/US7274464B2/en not_active Expired - Lifetime
- 2002-10-16 WO PCT/EP2002/011544 patent/WO2003036226A1/de active Application Filing
- 2002-10-16 JP JP2003538681A patent/JP4377229B2/ja not_active Expired - Fee Related
- 2002-10-16 EP EP02782919.1A patent/EP1442269B1/de not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3504464C1 (de) | 1985-02-09 | 1986-04-17 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München | Transportables Meßgerät zur Überprüfung der Positioniergenauigkeit eines programmgesteuerten Gerätearmes |
US5909939A (en) | 1995-09-18 | 1999-06-08 | Leitz-Brown & Sharpe Messtechnik Gmbh | High accuracy coordinate measuring machine having a plurality of length-adjustable legs |
DE19534535C2 (de) | 1995-09-18 | 2000-05-31 | Leitz Mestechnik Gmbh | Koordinatenmeßmaschine |
DE19703735A1 (de) | 1997-01-31 | 1998-08-06 | Leitz Brown & Sharpe Mestechni | Längenveränderliches Element |
WO2001038828A1 (de) | 1999-11-26 | 2001-05-31 | Dr. Johannes Heidenhain Gmbh | Winkelmesssystem |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004056726B4 (de) * | 2004-11-19 | 2014-12-24 | Dr. Johannes Heidenhain Gmbh | Verfahren und Vorrichtung zur Bestimmung der räumlichen Lage eines ersten Objektes bezüglich eines zweiten Objektes |
WO2007144573A1 (en) * | 2006-06-16 | 2007-12-21 | Renishaw Plc | Metrology apparatus |
WO2007144587A1 (en) * | 2006-06-16 | 2007-12-21 | Renishaw Plc | Extendable leg assembly for position measurement apparatus |
US7841097B2 (en) | 2006-06-16 | 2010-11-30 | Renishaw Plc | Metrology apparatus |
US10359267B2 (en) | 2015-02-13 | 2019-07-23 | The Victaulic Company Of Japan Limited | Behavior inspection apparatus and behavior inspection method for extensible flexible pipe joint |
CN110487158A (zh) * | 2019-09-02 | 2019-11-22 | 太原科技大学 | 一种联轴器对中检测装置 |
CN110487158B (zh) * | 2019-09-02 | 2021-06-29 | 太原科技大学 | 一种联轴器对中检测装置 |
Also Published As
Publication number | Publication date |
---|---|
DE10151563A1 (de) | 2003-04-30 |
EP1442269A1 (de) | 2004-08-04 |
US20050018205A1 (en) | 2005-01-27 |
JP2005506543A (ja) | 2005-03-03 |
US7274464B2 (en) | 2007-09-25 |
EP1442269B1 (de) | 2013-04-17 |
JP4377229B2 (ja) | 2009-12-02 |
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