AT215169B - Device for determining the thickness of non-magnetizable layers on ferromagnetic test objects - Google Patents

Device for determining the thickness of non-magnetizable layers on ferromagnetic test objects

Info

Publication number
AT215169B
AT215169B AT851858A AT851858A AT215169B AT 215169 B AT215169 B AT 215169B AT 851858 A AT851858 A AT 851858A AT 851858 A AT851858 A AT 851858A AT 215169 B AT215169 B AT 215169B
Authority
AT
Austria
Prior art keywords
thickness
determining
spring
magnet
test objects
Prior art date
Application number
AT851858A
Other languages
German (de)
Inventor
Vaclav Ing Bruna
Original Assignee
Vaclav Ing Bruna
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 Vaclav Ing Bruna filed Critical Vaclav Ing Bruna
Priority to AT851858A priority Critical patent/AT215169B/en
Application granted granted Critical
Publication of AT215169B publication Critical patent/AT215169B/en

Links

Landscapes

  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Gerät zur Bestimmung der Dicke nicht magnetisierbarer
Schichten auf   ferroma-gnetischen Prüflingen   
 EMI1.1 
 

 <Desc/Clms Page number 2> 

 so bleibt der Magnet 9 am Prüfling haften. Die Lage des Magneten 9 kann durch das durchsichtige Mundstück 2 beobachtet werden. Auf diese Art können mehrere hundert Messungen in der Stunde durchgeführt werden. 



   Bei Einzelfabrikation oder bei Kontrolle der Schichtdicke während des Herstellungsprozesses, wo die Messungen der absoluten Dickenwerte erforderlich sind, geht man folgendermassen vor. 



   Die Feder 7 wird durch entsprechende Drehung der Buchse 4 entspannt. Das Gerät wird mit dem Mundstück 2 auf den Prüfling aufgesetzt und der Magnet 9 bleibt an diesem haften. Jetzt wird durch Drehung der Buchse 4 im entgegengesetzten Sinne mittels des Stiftes 5 und des Gleitkörpers 6 die Feder 7 so   lang03   gepannt, bis der Magnet 9 vom Prüfling abreisst, was durch   das durchsichtige Mundstück   2 beobachtet werden kann. Im Augenblick des Abreissens wird die Drehung dor Buchse 4 eingestellt. Im Fenster 3 wird der Wert der Federspannung an der Skala 10 abgelesen und mittels des Eichdiagrammes ausgewertet. Die- 
 EMI2.1 
 



   Das beschriebene Gerät beschleunigt, wie schon erwähnt, die Messung bzw. Kontrolle von Schichtdicken ganz wesentlich, was besonders bei Serien- und Massenfabrikation ins Gewicht fällt. Dabei entspricht die Genauigkeit der Messung (Kontrolle) den höchsten, an solche Geräte gestellten Anforderungen. 



   PATENTANSPRÜCHE : 
1. Gerät zur Bestimmung der Dicke nicht magnetisierbarer Schichten auf ferromagnetischen Prüflingen, dessen Messsystem einen an die nicht magnetisierbare Schicht zu legenden Magneten aufweist, den eine Feder mit einstellbarer Spannung durch Vermittlung einer Zugstange vom Prüfling abzureissen sucht, wobei die für das Abreissen erforderliche Spannung derFeder ein Mass für die Dicke der nicht magnetisierbaren Schicht ist, und in dem durch Betätigung eines Druckknopfes (12) der Magnet (9) nach Voreinstellung der für die Messstellung gewünschten Spannung der Abreissfeder (7) gegen den Prüfling gedrückt wird, dadurch gekennzeichnet, dass bei Betätigung des Druckknopfes ein am Magneten anliegender, mit dem Druckknopf fest verbundener Teil den Magneten in seine Messlage drückt,

   worauf der Druckknopf nach seiner Freigabe unter Wirkung einer weiteren Feder (13) in seine das Messsystem zur Prüfung freigebende Ausgangsstellung zurückkehrt.



   <Desc / Clms Page number 1>
 



  Device for determining the thickness of non-magnetizable
Layers on ferromagnetic test objects
 EMI1.1
 

 <Desc / Clms Page number 2>

 so the magnet 9 remains attached to the test item. The position of the magnet 9 can be observed through the transparent mouthpiece 2. Several hundred measurements per hour can be carried out in this way.



   In the case of individual production or when checking the layer thickness during the production process, where measurements of the absolute thickness values are required, the procedure is as follows.



   The spring 7 is relaxed by a corresponding rotation of the bush 4. The device is placed with the mouthpiece 2 on the test object and the magnet 9 remains attached to it. Now, by turning the socket 4 in the opposite direction by means of the pin 5 and the sliding body 6, the spring 7 is tensioned until the magnet 9 breaks away from the test item, which can be observed through the transparent mouthpiece 2. At the moment of tearing off, the rotation of the bush 4 is stopped. In window 3, the value of the spring tension is read on the scale 10 and evaluated using the calibration diagram. The-
 EMI2.1
 



   As already mentioned, the device described accelerates the measurement or control of layer thicknesses quite significantly, which is particularly important in series and mass production. The accuracy of the measurement (control) corresponds to the highest requirements placed on such devices.



   PATENT CLAIMS:
1. Device for determining the thickness of non-magnetizable layers on ferromagnetic test objects, the measuring system of which has a magnet to be placed on the non-magnetizable layer, which a spring with adjustable tension tries to tear off the test object by means of a pull rod, the tension of the spring being required for the tear-off is a measure of the thickness of the non-magnetizable layer, and in which the magnet (9) is pressed against the test object by pressing a push button (12) after the tension of the tear-off spring (7) required for the measurement position has been preset, characterized in that at Pressing the push button, a part attached to the magnet and firmly connected to the push button pushes the magnet into its measuring position,

   whereupon the push button after its release under the action of a further spring (13) returns to its starting position releasing the measuring system for testing.

 

Claims (1)

2. Gerät nach Anspruch 1, gekennzeichnet durch einen Fixierring (15), der das die Abreissfeder (7) spannende Organ (4) gegen die Lagerbüchse (1) drückt, in welcher der Magnet (9), seine Zugstange (8) und die Abreissfeder (7) angeordnet sind. 2. Device according to claim 1, characterized by a fixing ring (15) which presses the tear-off spring (7) tensioning member (4) against the bearing bush (1), in which the magnet (9), its pull rod (8) and the Tear-off spring (7) are arranged. 3. Gerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der mit dem Druckknopf (12) fest verbundene Teil eine Hülse (11) ist, die die Abreissfeder (7) und die Zugstange (8) umgibt und mit ihrem unteren Rand mit einem Bund (16) des Magneten (9) zusammenwirkt. 3. Device according to claim 1 or 2, characterized in that with the push button (12) firmly connected part is a sleeve (11) which surrounds the tear-off spring (7) and the pull rod (8) and with its lower edge with a Collar (16) of the magnet (9) cooperates.
AT851858A 1958-12-09 1958-12-09 Device for determining the thickness of non-magnetizable layers on ferromagnetic test objects AT215169B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT851858A AT215169B (en) 1958-12-09 1958-12-09 Device for determining the thickness of non-magnetizable layers on ferromagnetic test objects

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT851858A AT215169B (en) 1958-12-09 1958-12-09 Device for determining the thickness of non-magnetizable layers on ferromagnetic test objects

Publications (1)

Publication Number Publication Date
AT215169B true AT215169B (en) 1961-05-25

Family

ID=3606180

Family Applications (1)

Application Number Title Priority Date Filing Date
AT851858A AT215169B (en) 1958-12-09 1958-12-09 Device for determining the thickness of non-magnetizable layers on ferromagnetic test objects

Country Status (1)

Country Link
AT (1) AT215169B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5006799A (en) * 1988-12-01 1991-04-09 Pfanstiehl John G Low cost magnetic coating thickness gauge with holding magnet, bias spring and holding force indicator
US5094009A (en) * 1990-10-17 1992-03-10 Defelsko Corporation Gauge for measuring the thickness of a coating on a substrate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5006799A (en) * 1988-12-01 1991-04-09 Pfanstiehl John G Low cost magnetic coating thickness gauge with holding magnet, bias spring and holding force indicator
US5094009A (en) * 1990-10-17 1992-03-10 Defelsko Corporation Gauge for measuring the thickness of a coating on a substrate

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