AT2385U1 - ANGLE MEASURING SYSTEM - Google Patents
ANGLE MEASURING SYSTEM Download PDFInfo
- Publication number
- AT2385U1 AT2385U1 AT55797U AT55797U AT2385U1 AT 2385 U1 AT2385 U1 AT 2385U1 AT 55797 U AT55797 U AT 55797U AT 55797 U AT55797 U AT 55797U AT 2385 U1 AT2385 U1 AT 2385U1
- Authority
- AT
- Austria
- Prior art keywords
- scanning unit
- measuring system
- angle measuring
- sensor
- scanning
- Prior art date
Links
- 239000000463 material Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 claims 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/347—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
Die Erfindung betrifft ein Winkelmeßsystem mit einer entlang des Umfanges einer kreisrunden Welle (7) verlaufenden Maßverkörperung und einer zugehörigen Abtasteinheit (4), die, der Maßverkörperung gegenüberstehend, zumindest einen Sensor (5a, 5b) in einer Abtastebene (e1, e2) aufweist. Die Erfindung ist dadurch gekennzeichnet, daß die Abtastebene (e) in zwei Teilebenen (e1, e2) geteilt ist, die einander entlang einer Geraden (g) schneiden und daß der Sensor (5a; 5b) Abstand von der Schnittgeraden (g) aufweist. In einer Ausgestaltung sind zwei Sensoren (5a, 5b) symmetrisch zur Schnittgeraden (g) liegend vorgesehen.The invention relates to an angle measuring system with a measuring scale running along the circumference of a circular shaft (7) and an associated scanning unit (4) which, opposite the measuring scale, has at least one sensor (5a, 5b) in a scanning plane (e1, e2). The invention is characterized in that the scanning plane (e) is divided into two sub-planes (e1, e2) which intersect one another along a straight line (g) and that the sensor (5a; 5b) is at a distance from the straight line (g). In one embodiment, two sensors (5a, 5b) are provided lying symmetrically to the intersection line (g).
Description
AT 002 385 UlAT 002 385 Ul
Die Erfindung betrifft ein Winkelmeßsystem und ein Verfahren zu seiner Montage.The invention relates to an angle measuring system and a method for its assembly.
Winkelmeßsysteme bestehen in wesentlichen entweder aus einer Maßverkörperung in Form einer Scheibe mit einer Teilung an der Stirnfläche oder aus einer Maßverkörperung am Außenumfang einer kreisrunden Welle, deren Winkellage festgestellt werden soll und aus einer Abtasteinheit, die feststehend der Maßverkörperung gegenüber angebracht ist und zumindest einen Sensor aufweist. In seltenen Fällen kann auch die Welle feststehend und die Abtasteinheit rotierend vorgesehen sein.Angle measuring systems essentially consist either of a material measure in the form of a disc with a division on the end face or of a material measure on the outer circumference of a circular shaft, the angular position of which is to be determined, and of a scanning unit which is fixed opposite the material measure and has at least one sensor . In rare cases, the shaft can also be stationary and the scanning unit can be provided in a rotating manner.
Die vorliegende Erfindung bezieht sich auf solche Winkel-meßsysteme, bei denen die Maßverkörperung entlang der Umfanges der Welle angeordnet ist, wobei es keine Rolle spielt, ob die Abtasteinheit optoelektronisch, magnetisch, induktiv oder kapazitiv arbeitet. Es ist davon aber selbverständlich der Aufbau und die Materialwahl der Maßverkörperung betroffen.The present invention relates to such angle measuring systems in which the measuring standard is arranged along the circumference of the shaft, it being irrelevant whether the scanning unit works optoelectronically, magnetically, inductively or capacitively. Of course, this affects the structure and choice of material of the material measure.
Die Maßverkörperung und die Abtasteinheit werden jeweils für sich dem Anwender geliefert und dort an der vorgesehenen Stelle montiert, was mit großer Genauigkeit geschehen muß, wobei nicht nur der (kleinste) Abstand der Abtasteinheit von der zylindrischen Oberfläche, sondern auch die Winkellage der der Welle zugekehrten Oberfläche der Abtasteinheit zur Tangentialebene an die Welle in ihrem der Abtasteinheit nächsten Punkt eingehalten werden muß. Man benötigt zur Montage spezielle Meßgeräte, die wiederum sperrig sind und viel Platz beanspruchen, obwohl üblicherweise gerade an den Stellen, an denen solche Winkelmeßsysteme angebracht werden, wenig Platz zur Verfügung steht.The measuring standard and the scanning unit are each delivered to the user and assembled there at the intended location, which must be done with great accuracy, not only the (smallest) distance of the scanning unit from the cylindrical surface, but also the angular position of the shaft facing the shaft Surface of the scanning unit to the tangential plane to the shaft in its point closest to the scanning unit must be observed. Special measuring devices are required for assembly, which in turn are bulky and take up a lot of space, although usually little space is available, particularly at the places where such angle measuring systems are attached.
Es ist die Aufgabe der Erfindung, ein Winkelmeßsystem der eingangs genannten Art zu schaffen, dessen Abtasteinheit 2 AT 002 385 Ul leicht und problemlos zu montieren ist, ohne daß dabei die Genauigkeit der Montage bezüglich der Maßverkörperung leidet .It is the object of the invention to provide an angle measuring system of the type mentioned, the scanning unit 2 AT 002 385 Ul of which can be assembled easily and without problems, without the accuracy of the assembly with respect to the material measure suffering.
Erfindungsgemäß werden diese Ziele dadurch erreicht, daß die der Maßverkörperung zugekehrte Fläche der Abtasteinheit aus zwei einander längs einer Geraden schneidenden, die Abtasteinheit konkav ausbildenden, Teilflächen besteht und daß der Sensor in einer der Teilebenen mit Abstand von der Schnittgeraden angeordnet ist.According to the invention, these objectives are achieved in that the surface of the scanning unit facing the measuring standard consists of two partial surfaces intersecting one another along a straight line, forming the scanning unit concavely, and in that the sensor is arranged in one of the partial planes at a distance from the cutting line.
Durch diese Maßnahme erreicht man es, daß die Justierung der Abtasteinheit einfach durch berührendes Auflegen auf den Umfang der Maßverkörperung vorgenommen wird, wobei gegebenenfalls zum Erreichen des gewünschten radialen Abstandes eine entsprechend dicke Folie dazwischengelegt wird, da die beiden Erzeugenden, entlang derer die Abtast -einheit die Maßverkörperung berührt, die genaue Winkellage der beiden Bauteile zueinander sicherstellen.By this measure it is achieved that the adjustment of the scanning unit is carried out simply by touching the circumference of the material measure, whereby if necessary to achieve the desired radial distance, a correspondingly thick film is interposed, since the two generators along which the scanning unit touches the measuring standard, ensure the exact angular position of the two components to each other.
In einer bevorzugten Ausgestaltung sind zwei symmetrisch zur Schnittgeraden der Teilebenen angeordnete Sensoren vorgesehen.In a preferred embodiment, two sensors are provided which are arranged symmetrically to the line of intersection of the partial planes.
Dies ermöglicht es, ein und dieselbe Abtasteinheit für verschiedene Wellendurchmesser zu verwenden. Die Kosten für den zusätzlichen Sensor sind, unabhängig von seiner Art, im Vergleich zu den Einsparungen bei der Montage vernachlässigbar gering, darüber hinaus ermöglicht es die Anordnung zweier Sensoren durch entsprechende Auswertung der von ihnen erhaltenen Signale, die Fehler, die auf Teilungsabweichungen und Sensor-Strukturabweichungen zurückzuführen sind, merklich zu reduzieren, auch kommt es zu einer Reduktion der Exzentrizitätsfehler während des Rotierens der Welle. 3 AT 002 385 UlThis makes it possible to use one and the same scanning unit for different shaft diameters. The cost of the additional sensor, irrespective of its type, is negligibly small in comparison to the savings in assembly. In addition, the arrangement of two sensors by appropriate evaluation of the signals received by them enables errors that are based on pitch deviations and sensor Structural deviations are to be reduced significantly, there is also a reduction in the eccentricity errors during the rotation of the shaft. 3 AT 002 385 Ul
Die Erfindung wird im folgenden anhand der Zeichnung näher erläutert. Dabei zeigt die Fig. 1 ein Meßsystem gemäß dem Stand der Technik in Stirnansicht auf die drehende Welle und in Seitenansicht schematisch dargestellt, die Fig. 2 eine Stirnansicht auf ein erfindungsgemäß ausgestaltetes Meßsystem.The invention is explained below with reference to the drawing. 1 shows a measuring system according to the prior art in a front view of the rotating shaft and in a side view, and FIG. 2 shows a front view of a measuring system designed according to the invention.
Wie der Fig. 1 entnehmbar ist, trägt eine drehbare Welle 7 eine Maßverkörperung 3, die unter Umständen die Form einer Scheibe haben kann, auf deren Umfang ein Maßstab ausgebildet ist. Dieser Maßstab kann je nach dem Abtastprinzip die Anforderungen für übliche optoelektronische, magnetische, induktive oder kapazitive Abtasteinheiten erfüllen.As can be seen from FIG. 1, a rotatable shaft 7 carries a material measure 3, which may possibly have the shape of a disk, on the circumference of which a scale is formed. Depending on the scanning principle, this scale can meet the requirements for conventional optoelectronic, magnetic, inductive or capacitive scanning units.
Eine solche Abtasteinheit 1 ist schematisch im notwendigen Abstand h oberhalb der Welle 7 dargestellt, wobei auch die Justierung der Abtastebene e bezüglich einer Tangentialebene t an die Welle 7 eingehalten werden muß. Die verschiedenen Fehlermöglichkeiten beim Justieren sind durch die Pfeile f oberhalb des Kopfes der Abtasteinheit 1 dargestellt .Such a scanning unit 1 is shown schematically at the necessary distance h above the shaft 7, the adjustment of the scanning plane e with respect to a tangential plane t to the shaft 7 also having to be observed. The various error possibilities during adjustment are shown by the arrows f above the head of the scanning unit 1.
Der eigentliche Sensor 2 ist für diese Erfindung nur bezüglich seiner Lage interessant und daher ebenfalls nur rein schematisch dargestellt.The actual sensor 2 is of interest for this invention only with regard to its position and is therefore also shown purely schematically.
Die Fig. 2 zeigt eine erfindungsgemäße Abtasteinheit 4, bei der die Abtastebene e in zwei Teilebenen el und e2 geteilt ist, die einander entlang einer Schnittgeraden g schneiden.FIG. 2 shows a scanning unit 4 according to the invention, in which the scanning plane e is divided into two sub-planes el and e2, which intersect one another along a line of intersection g.
Zwei Sensoren 5a, 5b sind bereits im Werk bei der Herstellung der Abtasteinheit symmetrisch zur Schnittgeraden g in den Teilebenen el, e2 angeordnet und montiert worden, was im Werk ohne großen Aufwand mit der notwendigen Präzision möglich ist. 4 AT 002 385 UlTwo sensors 5a, 5b have already been arranged and assembled symmetrically to the line of intersection g in the part planes el, e2 in the factory in the production of the scanning unit, which is possible in the factory without great effort with the necessary precision. 4 AT 002 385 Ul
Bei der Montage wird nur die gesamte Abtasteinheit 4, gegebenenfalls unter dem Zwischenlegen einer nicht dargestellten Folie, die die Dicke des Abtastschlitzes h (Fig. 1) aufweist, auf die Welle 7 gelegt und sodann fest montiert. Die Folie wird abgezogen und die Abtasteinheit 4 befindet sich in der richtigen Lage, da sie während der Montage durch die beiden berührenden Erzeugenden b, ausgenommen ihre axiale Anordnung, völlig korrekt und statisch bestimmt, gelagert war.During assembly, only the entire scanning unit 4, if appropriate with the interposition of a film, not shown, which has the thickness of the scanning slot h (FIG. 1), is placed on the shaft 7 and then firmly mounted. The film is pulled off and the scanning unit 4 is in the correct position, since it was completely correctly and statically determined, during the assembly by the two contacting generators b, except for their axial arrangement.
Da die Erfindung sich auf die zugrundeliegende Geometrie konzentriert, wurden die elektrischen Anschlüsse der Sensoren 2, 5a, 5b ebenso wie die eigentlichen Halterungen der Abtasteinheiten 1 und 4 nicht näher dargestellt. Diese entsprechen dem Stand der Technik und sind dem Fachmann auf dem Gebiete der Meßtechnik vertraut. 5Since the invention concentrates on the underlying geometry, the electrical connections of the sensors 2, 5a, 5b and the actual holders of the scanning units 1 and 4 have not been shown in detail. These correspond to the state of the art and are familiar to the person skilled in the field of measurement technology. 5
Claims (3)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT55797U AT2385U1 (en) | 1997-09-09 | 1997-09-09 | ANGLE MEASURING SYSTEM |
| DE29815905U DE29815905U1 (en) | 1997-09-09 | 1998-09-04 | Angle measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT55797U AT2385U1 (en) | 1997-09-09 | 1997-09-09 | ANGLE MEASURING SYSTEM |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT2385U1 true AT2385U1 (en) | 1998-09-25 |
Family
ID=3493770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT55797U AT2385U1 (en) | 1997-09-09 | 1997-09-09 | ANGLE MEASURING SYSTEM |
Country Status (2)
| Country | Link |
|---|---|
| AT (1) | AT2385U1 (en) |
| DE (1) | DE29815905U1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10310369C5 (en) * | 2003-02-19 | 2016-07-21 | Dr. Johannes Heidenhain Gmbh | Optical measuring system |
| ES2378539T3 (en) * | 2003-10-14 | 2012-04-13 | Repower Systems Ag | Speed regulation in a wind power installation with two proximity sensors for speed measurement |
| DE102012012308B3 (en) * | 2012-06-20 | 2013-02-28 | Ssb Wind Systems Gmbh & Co. Kg | Rotational angle sensor for use in rotating shaft of wind-power plant to determine e.g. rotor speed, has measuring element with chain elements whose rollers are aligned in direction of shaft, where chain is attached on shaft circumference |
| DE102015209868A1 (en) * | 2015-05-29 | 2016-12-01 | Zf Friedrichshafen Ag | Planetary gear with at least one sensor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3602292A1 (en) * | 1986-01-25 | 1987-08-06 | Audi Ag | TRANSMITTER ARRANGEMENT |
| DE4331151A1 (en) * | 1993-09-14 | 1995-03-23 | Baumueller Nuernberg Gmbh | System for measuring the absolute position of the movable, cyclical graduation mark carrier of an incremental position encoder |
-
1997
- 1997-09-09 AT AT55797U patent/AT2385U1/en unknown
-
1998
- 1998-09-04 DE DE29815905U patent/DE29815905U1/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3602292A1 (en) * | 1986-01-25 | 1987-08-06 | Audi Ag | TRANSMITTER ARRANGEMENT |
| DE4331151A1 (en) * | 1993-09-14 | 1995-03-23 | Baumueller Nuernberg Gmbh | System for measuring the absolute position of the movable, cyclical graduation mark carrier of an incremental position encoder |
Also Published As
| Publication number | Publication date |
|---|---|
| DE29815905U1 (en) | 1999-02-18 |
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