DE2142145A1 - ELASTIC MEASURING WHEEL - Google Patents

ELASTIC MEASURING WHEEL

Info

Publication number
DE2142145A1
DE2142145A1 DE19712142145 DE2142145A DE2142145A1 DE 2142145 A1 DE2142145 A1 DE 2142145A1 DE 19712142145 DE19712142145 DE 19712142145 DE 2142145 A DE2142145 A DE 2142145A DE 2142145 A1 DE2142145 A1 DE 2142145A1
Authority
DE
Germany
Prior art keywords
measuring wheel
elastic
measuring
elastic measuring
circumference
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.)
Pending
Application number
DE19712142145
Other languages
German (de)
Inventor
Josef Steffens
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
Application filed by Individual filed Critical Individual
Priority to DE19712142145 priority Critical patent/DE2142145A1/en
Publication of DE2142145A1 publication Critical patent/DE2142145A1/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00Measuring instruments characterised by the use of mechanical techniques
    • G01B3/12Measuring wheels

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Description

BESCHREIBUNG Elastisches Meßrad Die Erfindung betrifft ein Meßrad, welches sich in Verbindung mit einem IJmcbehungszähler Sr die Längenmessung und dergleichen von insbesondere weichen, druckempfindlichen Gegenständen eignet, zum Beispiel zur Umfangsmessung von noch unvulkanisierten Autoreifen. DESCRIPTION Elastic measuring wheel The invention relates to a measuring wheel, which, in conjunction with an IJmcbehungszähler Sr, the length measurement and The like of especially soft, pressure-sensitive objects is suitable for Example for measuring the circumference of still unvulcanized car tires.

Es ist bekannt, Umdrehungszähler mit Meßrödern auszustatten, welche einen festen Durchmesser haben und teilweise zur besseren Griffigkeit auf ihrem Umfang mit Riefen, Nadeln oder gummiartigen Belägen ausgestattet sind. Zur genauen Längenmessung und dergleichen von weichen, druckempfindlichen Gegenständen eignen sich solche Meßröder jedoch nicht.It is known to equip revolution counters with Meßrödern, which have a fixed diameter and partly for a better grip on their Circumference are equipped with grooves, needles or rubber-like coverings. To the exact Length measurement and the like of soft, pressure-sensitive objects However, such Meßröder are not.

Geriette Meßröder bedürfen zur Vermeidung von Schlupf eines Anpressdruckes an den zu messenden Gegenstand, wodurch dessen Oberfläche um die Auflagefläche des Meßrades herum verformt wird und somit Fehimessungen entstehen. Benadelte Meßräder, wie sie zum Beispiel zum Messen von textilen Stoffbadhnen mit Erfolg verwendet werden, eignen sich für die Messung von dickeren weichen Gegenständen deshalb nicht, weil die Nadeln einen von Eindringtiefe und Abwölzpunkt im zu messenden Gegenstand abhängigen und somit praktisch unbestimmbaren Wirk-Teilkreis des Meßrades ergeben. Mit gummiartigen Belägen versehene Meßräder können bei genugend weichem Belag eine Oberflöchenvefformung des zu messenden Gegenstandes vermeiden, jedoch führt die in diesem Falle entstehende Verformung der Meßradoberfläche zu einer partiellen Radiusveranderung und somit Umfang änderung des Meßrades, wodurch ebenfalls Fehlmessungen entstehen.Equipped measuring rods require contact pressure to avoid slippage to the object to be measured, whereby its surface around the support surface of the Measuring wheel around is deformed and thus incorrect measurements arise. Needled measuring wheels, how they are successfully used, for example, to measure textile fabric baths, are not suitable for measuring thick, soft objects because the needles depend on the penetration depth and rooting point in the object to be measured and thus result in a practically indeterminable effective pitch circle of the measuring wheel. With rubbery Measuring wheels with covering can cause surface deformation if the covering is sufficiently soft of the object to be measured, but the resulting in this case leads Deformation of the measuring wheel surface to a partial change in radius and thus Change in the circumference of the measuring wheel, which also leads to incorrect measurements.

Der Erfindung liegt die Aufgabe zugrunde, die Länge oder gegebenenfalls dergleichen von weichen, druckempfindlichen Gegenständen mittels eines Meßrades zu messen, welches Fehlmessungen durch Schlupf, durch Verformung der Oberfläche des zu messenden Gegenstandes sowie durch umfangsändernde Verformung des Meßrades selbst, vermeidet.The invention is based on the object, the length or, if appropriate the like of soft, pressure-sensitive objects by means of a measuring wheel to measure which incorrect measurements due to slippage, due to deformation of the surface of the object to be measured as well as by deformation of the measuring wheel that changes its circumference yourself, avoids.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß beispielsweise eine mit einem Umiehungszähler gekoppelte Achse an ihrem Umfang mit einer Zwischenschicht eines elastischen Materials, zum Beispiel Schaumgummi, versehen ist, welche an ihrem äußeren Umfang wiederum mit einem flexiblen, doch in seiner endlosen Länge unveränderlichen Belag, zum Beispiel Schmirgel leinen, als Lauffläche versehen ist.This object is achieved in that, for example an axle coupled to a rev counter with an intermediate layer on its circumference an elastic material, for example foam rubber, is provided, which on her outer circumference again with a flexible, but unchangeable in its endless length Surface, for example emery linen, is provided as a running surface.

Die Vorteile eines solchen Meßrades bestehen darin, daß durch seinen elastischen Zwischenbelag, bei zur Vermeidung von Schlupf gegebenem Anpreßdruck, eine relativ große Auflageflöche entsteht und somit eine Verformung der Oberfläche des zu messenden Gegenstandes vermieden wird, sowie darin, daß das Meßrad durch diese Anpassung an die Oberfläche des zu messenden Gegenstandes seinen eigenen Wirk-Umfang nicht in zu Fehlmessungen fuhrender Weise ändern kann.The advantages of such a measuring wheel are that by his elastic intermediate covering, given contact pressure to avoid slippage, a relatively large support surface is created and thus a deformation of the surface of the object to be measured is avoided, as well as in that the measuring wheel through this adaptation to the surface of the object to be measured has its own effective range cannot change in a way that leads to incorrect measurements.

Claims (1)

SCHUTZANSPRÜCHE PROTECTION CLAIMS Anspruchi9) Elastisches Meßrad zur Längenmessung und dergleichen von weichen und druckempfindlichen Gegenständen, gekennzeichnet durch eine Achse mit an ihrem Umfang aufgebrachten elastischen Zwischenbelag, welcher an seinem äußeren Umfang wiederum mit einem flexiblen Belag als Lauffläche versehen ist, welcher sich durch Verformung nicht in seiner endlosen Länge ändert.Claimi9) elastic measuring wheel for length measurement and the like of soft and pressure-sensitive objects, characterized by an axis with applied to its circumference elastic intermediate covering, which on its outer The scope is in turn provided with a flexible covering as a running surface, which is by deformation does not change in its endless length. Anspruch 2: Elastisches Meßrad nach Anspruch 1, gekennzeichnet dadurch, daß die Achse nicht durch das Meßrad hindurchführt, sondern seitlich angeflanscht ist.Claim 2: Elastic measuring wheel according to Claim 1, characterized in that that the axis does not pass through the measuring wheel, but flanged on the side is.
DE19712142145 1971-08-23 1971-08-23 ELASTIC MEASURING WHEEL Pending DE2142145A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19712142145 DE2142145A1 (en) 1971-08-23 1971-08-23 ELASTIC MEASURING WHEEL

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712142145 DE2142145A1 (en) 1971-08-23 1971-08-23 ELASTIC MEASURING WHEEL

Publications (1)

Publication Number Publication Date
DE2142145A1 true DE2142145A1 (en) 1973-03-08

Family

ID=5817511

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19712142145 Pending DE2142145A1 (en) 1971-08-23 1971-08-23 ELASTIC MEASURING WHEEL

Country Status (1)

Country Link
DE (1) DE2142145A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2547913A1 (en) * 1983-06-23 1984-12-28 Montornes Herve Wheel for measuring a length

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2547913A1 (en) * 1983-06-23 1984-12-28 Montornes Herve Wheel for measuring a length

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