DE19651234A1 - Rotation angle measuring device - Google Patents

Rotation angle measuring device

Info

Publication number
DE19651234A1
DE19651234A1 DE19651234A DE19651234A DE19651234A1 DE 19651234 A1 DE19651234 A1 DE 19651234A1 DE 19651234 A DE19651234 A DE 19651234A DE 19651234 A DE19651234 A DE 19651234A DE 19651234 A1 DE19651234 A1 DE 19651234A1
Authority
DE
Germany
Prior art keywords
shaft
encoder
measuring
bore
encoder according
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
DE19651234A
Other languages
German (de)
Other versions
DE19651234C2 (en
Inventor
Hubert Zepf
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.)
Hengstler GmbH
Original Assignee
Hengstler GmbH
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
Application filed by Hengstler GmbH filed Critical Hengstler GmbH
Priority to DE19651234A priority Critical patent/DE19651234C2/en
Publication of DE19651234A1 publication Critical patent/DE19651234A1/en
Application granted granted Critical
Publication of DE19651234C2 publication Critical patent/DE19651234C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • G01B21/22—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 angles or tapers; for testing the alignment of axes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
    • F16D1/0852—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping between the mating surfaces of the hub and shaft
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

The measuring device has a housing enclosing a rotary shaft (2). This is provided with a source disc carrying angle information, which is scanned by a cooperating sensor for detecting the angular position of the shaft. The rotary shaft has notches at spaced points around its periphery and is received within a corresponding bore in the end of a measuring shaft (9), for providing a drive coupling between the shafts. The measuring shaft preferably has a thread for reception of a mounting part.

Description

Die Erfindung betrifft eine spielfreie Verbindung zur Übertragung von begrenzten Drehmomenten von einer treibenden Welle auf ein anzutreibendes Gerät, vorzugs­ weise leichtgängige Meßgeräte oder Drehgeber.The invention relates to a play-free connection for the transmission of limited Torques from a driving shaft to a device to be driven, preferably as smooth-running measuring devices or encoders.

Für den Antrieb von Meßgeräten und Drehgebern, sind verschiedene Kupplungen bekannt, die ihren Ursprung im Maschinenbau haben. Die EP 0 682 229A be­ schreibt zur drehfesten Ankupplung der Geberwelle, an eine zu erfassende Meßwel­ le, eine Spannzange, wobei ein Außenkonus in einen Innenkonus gezogen wird, um so die Meßwelle zu spannen. Die dazu erforderliche Spannschraube verläuft in axialer Richtung durch die Geberwelle.Various couplings are used to drive measuring devices and encoders known that have their origin in mechanical engineering. EP 0 682 229A writes to the rotationally fixed coupling of the encoder shaft to a measurement world to be recorded le, a collet, whereby an outer cone is pulled into an inner cone to so to tension the measuring shaft. The clamping screw required for this runs in axial direction through the encoder shaft.

Es sind auch Kupplungen zur reibungsfreien, relativ genauen Winkelübertragung zwischen einem Antriebs- und einem Abtriebsteil bekannt, bei denen die Verbindung zwischen Antiebs- und Abtriebsteil über zwei Federparallelführungen erfolgt, die je mit Abstand voneinander parallel verlaufende, gestreckte Federn aufweisen, deren Enden je starr miteinander verbunden sind und bei denen die einen Enden der Federn, der einen Parallelführung mit dem Antriebsteil und diejenigen der anderen Enden der Federn beider Parallelführungen, starr miteinander verbunden sind. Eine derartige Kupplung ist in der schweizer Patentschrift Nr. 381 028 beschrieben. They are also couplings for smooth, relatively precise angle transmission known between a drive and an output part, in which the connection between the drive and output part via two spring parallel guides, each have spaced parallel, elongated springs, the Ends are rigidly connected to each other and in which one end of the Springs, one in parallel with the drive part and those of the other Ends of the springs of both parallel guides are rigidly connected. A such coupling is described in Swiss Patent No. 381 028.  

Eine Weiterentwicklung der CH 381 028 beinhaltet die DE PS 30 38 072. Diese Kupplung enthält als Verbindungsteil einen Ring aus Kunststoff, an dem zwei Paare von parallelen Federarmen angeformt sind, deren Enden mit Augen versehen sind und paarweise in Zapfen an je einer Scheibe eingehängt werden, wobei eine Schei­ be auf der Antriebs- und die andere Scheibe auf der Abtriebswelle befestigt ist.DE PS 30 38 072 contains a further development of CH 381 028. This Coupling contains a plastic ring as a connecting part, on which two pairs are formed by parallel spring arms, the ends of which are provided with eyes and hung in pairs in pegs on each disc, one disc be attached to the drive shaft and the other disk to the output shaft.

Alle diese bekannten Kupplungen weisen die Nachteile auf, daß sie teuer in der Herstellung sind und viel Raum einnehmen. Je nach Platzverhältnissen ist auch die Montage schwierig.All these known couplings have the disadvantages that they are expensive in the Are manufacturing and take up a lot of space. Depending on the space available, the Assembly difficult.

Der Erfindung liegt die Aufgabe zugrunde, eine Kupplung bzw. eine Verbindung zwischen dem treibenden Maschinenteil und dem anzutreibenden Gerät zu schaf­ fen, welches die vorgenannten Nachteile nicht besitzt.The invention has for its object a coupling or a connection between the driving machine part and the device to be driven fen, which does not have the aforementioned disadvantages.

Diese Aufgabe wird gemäß der Erfindung durch die Merkmale des kennzeichnen­ den Teiles des Anspruchs 1 gelöst, daß in das Zentrum der antreibenden Welle eine Bohrung eingebracht wird und die anzutreibende Welle mit mindestens drei axialen, am Umfang dieser Welle, gleichmäßig verteilten Kerben, ausgebildet ist.This object is characterized by the features of the invention solved the part of claim 1 that in the center of the driving shaft Bore is introduced and the shaft to be driven with at least three axial, is formed on the circumference of this shaft, evenly distributed notches.

Beim Einwalzen der Kerben entstehen beiderseits der Kerben Wülste, die sich beim Eindrücken der Kerbwelle, in die zylinderische Bohrung der antreibenden Welle, elastisch verformen. Diese Verbindung hat die Vorteile, daß sich die Kerbwelle in der Bohrung verspannt, zentriert, axial ausrichtet, spielfrei und rüttelsicher ist. Wei­ tere Vorteile dieser Verbindung sind, daß sie platzsparend, preiswert herzustellen und wiederholt verwendbar istWhen the notches are rolled in, ridges are formed on both sides of the notches, Pushing the notch shaft into the cylindrical bore of the driving shaft, deform elastically. This connection has the advantages that the notch wave in the bore is braced, centered, axially aligned, free of play and vibration-proof. Wei Other advantages of this connection are that it is space-saving, inexpensive to manufacture and can be used repeatedly

Weitere Merkmale der Erfindung ergeben sich aus der folgenden Beschreibung, in Verbindung mit den Ansprüchen und Zeichnungen.Further features of the invention result from the following description, in Connection with the claims and drawings.

Im folgenden wird die Erfindung anhand eines in den Zeichnungen dargestellten Ausführungsbeispieles näher erläutert. Es zeigen: In the following the invention is illustrated by means of one in the drawings Embodiment explained in more detail. Show it:  

Fig. 1 die Kerbwelle, teilweise im Schnitt Fig. 1, the notched shaft, partially in section

Fig. 2 einen Schnitt: durch die Kerbwelle, entlang Linie A-B Fig. 2 shows a section: through the notched shaft, along line AB

Fig. 3 Kerbwelle in einen Geber eingebaut, teilweise im Schnitt mit antreibender Welle und Montagehilfe. Fig. 3 notched shaft installed in an encoder, partly in section with a driving shaft and assembly aid.

Die Fig. 3 zeigt den Grundaufbau von einem Drehgeber (1) in dem die Kerbwelle (2) drehbar gelagert ist. Fig. 3 shows the basic structure of a rotary encoder ( 1 ) in which the notched shaft ( 2 ) is rotatably mounted.

Die Fig. 2 zeigt einen Schnitt durch die Kerbwelle (2) mit den drei um 120° versetz­ ten Kerben (3), mit den aufgeworfenen Wulsten (4). Die Anzahl der Kerben kann beliebig erhöht werden. Fig. 2 shows a section through the notch shaft ( 2 ) with the three 120 ° staggered notches ( 3 ), with the raised beads ( 4 ). The number of notches can be increased as required.

Das den Kerben (3) gegenüberliegende Wellenende enthält eine Bohrung (5) mit einem Innengewinde (6). In das Gewinde (6) wird die Montagehilfe (7) einge­ schraubt, um die Welle (2), ohne das Gerät (1) zu beschädigen, in die Bohrung (8) vorn Wellenende (9) einzudrücken.The shaft end opposite the notches ( 3 ) contains a bore ( 5 ) with an internal thread ( 6 ). The assembly aid ( 7 ) is screwed into the thread ( 6 ) in order to press the shaft ( 2 ) into the bore ( 8 ) at the front of the shaft end ( 9 ) without damaging the device ( 1 ).

Die Öffnung (11) in der Abdeckung (10) wird anschließend mit einem nicht darge­ stellten Stopfen verschlossen. Zur Demontage des Gebers (1) wird die Montagehilfe (7) wieder in das Gewinde (6) eingeschraubt und der Geber (1) über die Welle (2) aus der Antriebswelle (9) herausgezogen.The opening ( 11 ) in the cover ( 10 ) is then closed with a plug not shown Darge. To disassemble the encoder ( 1 ), screw the assembly aid ( 7 ) back into the thread ( 6 ) and pull the encoder ( 1 ) out of the drive shaft ( 9 ) via the shaft ( 2 ).

Die Bohrung (12) und/oder der Bund (13) sind angebracht, um ein Abziehwerkzeug anzusetzen. Je nach Ausführung und Gegebenheiten kann die Geberwelle anstelle des Innengewindes (6) mit einem Außengewinde und die Montagehilfe (7) mit einem Innengewinde ausgeführt werden. Um den feststehenden Teil (14) des Gebers (1) zu fixieren, ist am Teil (14) ein Halteblech (15) befestigt, das mit einem Maschinen­ teil (16) lösbar verbunden ist. Die tragende Verbindung zwischen dem Geber (1) und dem Wellenende (9) wird durch die Kerben (4) realisiert.The bore ( 12 ) and / or the collar ( 13 ) are made to attach a puller. Depending on the design and circumstances, the encoder shaft can be designed with an external thread instead of the internal thread ( 6 ) and the mounting aid ( 7 ) with an internal thread. In order to fix the fixed part ( 14 ) of the encoder ( 1 ), a holding plate ( 15 ) is attached to the part ( 14 ), which is detachably connected to a machine part ( 16 ). The load-bearing connection between the encoder ( 1 ) and the shaft end ( 9 ) is realized by the notches ( 4 ).

Claims (7)

1. Drehgeber mit einem Gehäuse, mit einer in dem Gehäuse drehbar, gelagerten Geberwelle, mit einer durch die Geberwelle angetriebenen Winkelinformationen tragenden Scheibe, mit einer Abtastung für die Winkelinformationen, mit einer Einrichtung zur drehfesten Verbindung der Geberwelle, mit einer Meßwelle, deren Winkelstellung zu erfassen ist, dadurch gekennzeichnet, daß die Geber­ welle (2) auf der Antriebsseite am Umfang der Geberwelle (2) Kerben (3) auf­ weist, einer Meßwelle (9) die eine Bohrung (8) aufweist, in welche die mit Ker­ ben (3) aufweisende Welle (2) zur fluchtenden und drehfesten Verbindung ein­ gedrückt wird.1. Encoder with a housing, with a rotatable, mounted in the housing encoder shaft, with a disk driven by the encoder shaft carrying angle information, with a scanning for the angle information, with a device for rotationally fixed connection of the encoder shaft, with a measuring shaft, the angular position of is detected, characterized in that the encoder shaft ( 2 ) on the drive side on the circumference of the encoder shaft ( 2 ) has notches ( 3 ), a measuring shaft ( 9 ) which has a bore ( 8 ) into which the with benches ( 3 ) having shaft ( 2 ) for flush and rotationally fixed connection is pressed. 2. Drehgeber nach Anspruch 1, dadurch gekennzeichnet, daß die Geberwelle (2) auf der der Meßwelle abgewandten Seite eine Bohrung (5) mit Gewinde (6), zur Aufnahme der Montagehilfe (7), aufweist.2. Encoder according to claim 1, characterized in that the encoder shaft ( 2 ) on the side facing away from the measuring shaft has a bore ( 5 ) with thread ( 6 ) for receiving the assembly aid ( 7 ). 3. Drehgeber nach Anspruch 1, dadurch gekennzeichnet, daß die Geberwelle (2) auf der der Meßwelle abgewandten Seite ein Außengewinde aufweist, auf wel­ ches eine Montagehilfe aufschraubbar ist.3. Encoder according to claim 1, characterized in that the encoder shaft ( 2 ) on the side facing away from the measuring shaft has an external thread on which a mounting aid can be screwed on. 4. Drehgeber nach Anspruch 1, dadurch gekennzeichnet, daß die Kappe (10) eine Öffnung (11) aufweist, die mittels einem Deckel dicht verschließbar ist.4. Encoder according to claim 1, characterized in that the cap ( 10 ) has an opening ( 11 ) which can be sealed by means of a lid. 5. Drehgeber nach Anspruch 1, dadurch gekennzeichnet, daß am Teil (14) ein Hal­ teblech (15) angebracht ist.5. Encoder according to claim 1, characterized in that a Hal teblech ( 15 ) is attached to the part ( 14 ). 6. Drehgeber nach Anspruch 2, dadurch gekennzeichnet, daß die Montagehilfe (7) einen Bund (13) und/oder eine Bohrung (12) aufweist.6. Encoder according to claim 2, characterized in that the mounting aid ( 7 ) has a collar ( 13 ) and / or a bore ( 12 ). 7. Drehgeber nach Anspruch 2, dadurch gekennzeichnet, daß als Abzugshilfe eine DIN-Schraube mit einem Abstützteil verwendbar ist.7. Encoder according to claim 2, characterized in that as a trigger aid DIN screw can be used with a support part.
DE19651234A 1996-12-10 1996-12-10 Notched shaft for encoders Expired - Fee Related DE19651234C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19651234A DE19651234C2 (en) 1996-12-10 1996-12-10 Notched shaft for encoders

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19651234A DE19651234C2 (en) 1996-12-10 1996-12-10 Notched shaft for encoders

Publications (2)

Publication Number Publication Date
DE19651234A1 true DE19651234A1 (en) 1998-06-18
DE19651234C2 DE19651234C2 (en) 2002-10-10

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Application Number Title Priority Date Filing Date
DE19651234A Expired - Fee Related DE19651234C2 (en) 1996-12-10 1996-12-10 Notched shaft for encoders

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DE (1) DE19651234C2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19936237A1 (en) * 1999-08-05 2001-02-15 Heidenhain Gmbh Dr Johannes Rotation sensor mount has simple clamp arrangement
EP2584678A3 (en) * 2011-10-17 2015-05-06 Dunkermotoren GmbH Electric motor with an angular position encoder
CN110006389A (en) * 2019-05-10 2019-07-12 横店集团英洛华电气有限公司 Electric machines test fast thread matching mechanism

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0066636A1 (en) * 1981-06-05 1982-12-15 Siemens Aktiengesellschaft Optical pulse generator, especially an angular position transducer
DE8713664U1 (en) * 1987-10-12 1987-11-19 Max Stegmann GmbH, Uhren- und Elektroapparatefabrik, 78166 Donaueschingen Encoder
EP0270768A2 (en) * 1986-12-10 1988-06-15 Dr. Johannes Heidenhain GmbH Incrementor absolute revolution sensor with clamping means
EP0400241A1 (en) * 1989-05-30 1990-12-05 Tamagawa Seiki Kabushiki Kaisha Hollow shaft type resolver
DE4431453A1 (en) * 1994-09-03 1996-03-07 Bosch Gmbh Robert Angle of rotation encoder

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3026692A (en) * 1959-01-07 1962-03-27 Budnick Thea Coupling for angle transmission
CA1151885A (en) * 1979-10-09 1983-08-16 Richard Schmidt Coupling
DE9407988U1 (en) * 1994-05-13 1994-07-21 Max Stegmann GmbH Antriebstechnik - Elektronik, 78166 Donaueschingen Encoder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0066636A1 (en) * 1981-06-05 1982-12-15 Siemens Aktiengesellschaft Optical pulse generator, especially an angular position transducer
EP0270768A2 (en) * 1986-12-10 1988-06-15 Dr. Johannes Heidenhain GmbH Incrementor absolute revolution sensor with clamping means
DE8713664U1 (en) * 1987-10-12 1987-11-19 Max Stegmann GmbH, Uhren- und Elektroapparatefabrik, 78166 Donaueschingen Encoder
EP0400241A1 (en) * 1989-05-30 1990-12-05 Tamagawa Seiki Kabushiki Kaisha Hollow shaft type resolver
DE4431453A1 (en) * 1994-09-03 1996-03-07 Bosch Gmbh Robert Angle of rotation encoder

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19936237A1 (en) * 1999-08-05 2001-02-15 Heidenhain Gmbh Dr Johannes Rotation sensor mount has simple clamp arrangement
EP2584678A3 (en) * 2011-10-17 2015-05-06 Dunkermotoren GmbH Electric motor with an angular position encoder
CN110006389A (en) * 2019-05-10 2019-07-12 横店集团英洛华电气有限公司 Electric machines test fast thread matching mechanism
CN110006389B (en) * 2019-05-10 2024-04-05 浙江联宜电机有限公司 Quick thread matching mechanism for motor detection

Also Published As

Publication number Publication date
DE19651234C2 (en) 2002-10-10

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