AT89965B

AT89965B - Device for measuring flat surfaces.

Info

Publication number: AT89965B
Authority: AT
Original assignee: Krupp Ag
Priority date: 1919-09-20
Filing date: 1920-09-01
Publication date: 1922-11-10

Description

  

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  Vorrichtung   zum   Messen von ebenen   Flächen.   
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 einer Verzahnung zu verschen, die mit einer entsprechenden Verzahnung der Fussplatte a1 in Eingriff steht. 



  Bei dieser Bauart ist man   nämlich während des Messvorganges von   der Beschaffenheit der Unterlage   für'   die Säule A ganz unabhängig und   Fehler im Messergebnis,   die z. B. in der Unebenheit dieser Unterlage ihre Ursache hätten, sind daher   ausgeschlossen.   



     Man könnte die Anordnung auch   so treffen, dass an dem das Messrad nebst Ablesevorrichtung tragenden Schlitten E. der an der - entsprechend verlängerten - Stange D verschiebbar ist, auch der Stift gl befestigt wäre. In diesem Falle käme die verschiebbare Zahnstange nebst Zahnrädergetriebe in Fort-   fall : dafür müsste   aber das Paraboloid wesentlich verlängert werden. Das auf der Zeichnung   veranschau-   lichte Ausführungsbeispiel zeichnet sich daher durch eine wesentlich   gedrängtere   Bauart aus. 



    PATENT-ANSPRÜCHE:   
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  Device for measuring flat surfaces.
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 to give away a toothing which is in engagement with a corresponding toothing of the footplate a1.



  With this type of construction you are in fact completely independent of the nature of the support for 'the column A during the measurement process and errors in the measurement result, e.g. B. in the unevenness of this base would have their cause are therefore excluded.



     The arrangement could also be made in such a way that the pin gl would also be attached to the slide E. which carries the measuring wheel together with the reading device and which is displaceable on the - appropriately lengthened - rod D. In this case, the displaceable rack and gear mechanism would be omitted: for this, however, the paraboloid would have to be considerably lengthened. The exemplary embodiment illustrated in the drawing is therefore characterized by a much more compact design.



    PATENT CLAIMS:
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Claims

2, device according to claim 1, characterized in that a rod (G) is displaceable on the carriage (E), which carries the pin (gl) and is inevitably connected to the carriage (E) in such a way that the ratio of the distances between the measuring wheel (J) and the pin (g1) from the axis of rotation of the carrier (B) is constant.

3. Apparatus according to claim 2, characterized. that the base of the paraboloid is formed by a footplate (a1) of a column (A) supporting the carrier (B).

4. Apparatus according to claim 3, characterized. that the paraboloid (C) is connected to the footplate (a1) by a gear train.