DE633275C - Method for determining the hardness of grinding wheels - Google Patents

Method for determining the hardness of grinding wheels

Info

Publication number
DE633275C
DE633275C DEK132031D DEK0132031D DE633275C DE 633275 C DE633275 C DE 633275C DE K132031 D DEK132031 D DE K132031D DE K0132031 D DEK0132031 D DE K0132031D DE 633275 C DE633275 C DE 633275C
Authority
DE
Germany
Prior art keywords
hardness
grinding wheels
determining
plate
disc
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.)
Expired
Application number
DEK132031D
Other languages
German (de)
Inventor
Carl Geppert
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.)
KUGELFISCHER ERSTE AUTOMATISCH
Original Assignee
KUGELFISCHER ERSTE AUTOMATISCH
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 KUGELFISCHER ERSTE AUTOMATISCH filed Critical KUGELFISCHER ERSTE AUTOMATISCH
Priority to DEK132031D priority Critical patent/DE633275C/en
Application granted granted Critical
Publication of DE633275C publication Critical patent/DE633275C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/40—Investigating hardness or rebound hardness
    • G01N3/42—Investigating hardness or rebound hardness by performing impressions under a steady load by indentors, e.g. sphere, pyramid

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sampling And Sample Adjustment (AREA)

Description

Verfahren zum Ermitteln der Härte von Schleifscheiben Die Erfindung betrifft das bekannte Verfahren, die Härte eines Körpers durch die Eindringtiefe einer kegeligen Bplzenspitze zu messen. Sie löst die Aufgabe, bei Schleifscheiben das Prüfergebnis sicher und in sehr großer Genauigkeit zu erhalten.Method for determining the hardness of grinding wheels The invention relates to the known method, the hardness of a body through the depth of penetration a conical tip of a bulb. It solves the problem with grinding wheels to receive the test result safely and with great accuracy.

Das neue Verfahren kennzeichnet sich dadurch, daß zur Ermittlung der Eindringtiefe nicht die zu untersuchende Scheibe selbst, sondern ein von der kegeligen Bolzenspitze mit durchlochtes, lose .auf die Scheibe aufgelegtes Plättchen von gleichbleibender Stärke benutzt wird.The new method is characterized in that to determine the The penetration depth is not the disc to be examined itself, but one of the conical one Bolt tip with a perforated, loosely. On the disc placed plate of constant Strength is used.

Auf die zu prüfende Schleifscheibe wird eine dünne Platte beliebiger Größe aus lochbarem Material, z. B. Blech, Pappkarton o. dgl., gelegt. Der bekannte kegelige Schlagbolzen, der einen Schlag oder eine bestimmte Anzahl Schläge von gleichbleibender Stärke erhält, durchschlägt die Platte und dringt in die Schleifscheibe .ein. Die Tiefe richtet sich nach der Härte der Schleifscheibe.Any thin plate is placed on the grinding wheel to be tested Size made of punchable material, e.g. B. sheet metal, cardboard o. The like., Placed. The known tapered firing pin that takes one blow or a certain number of blows of constant Gains strength, breaks through the plate and penetrates the grinding wheel. the Depth depends on the hardness of the grinding wheel.

Es versteht sich, daß das in dem Plättchen erzeugte Loch durch eine Meßvorrichtung (Meßuhr) bekannter Art, die mit einer gleichen Spitze versehen. ist, ausgemessen werden kann und zur Anzeige der Härte der untersuchten Schleifscheibe zu dienen vermag. Dabei ist von Vorteil, daß das Plättchen selbständig ist und die Messung daher ohne die Scheibe vorgenommen werden kann. Das ist besonders wichtig, wenn Schleifscheiben an ihrer Stelle im Betriebe geprüft -,werden sollen, die Ausmessung des Schlagloches, hier aber etwa wegen schlechter Beleuchtung auf Schwierigkeiten stößt. Auch bietet sich die erwünschte Möglichkeit, die Plättchen als Meßdokumente der zu prüfenden Schleifscheiben aufzubewahren, wofür sonst umständlichere Einrichtungen getroffen zu werden pflegen.It will be understood that the hole created in the plate by a Measuring device (dial gauge) of known type, which is provided with the same tip. is, can be measured and to display the hardness of the grinding wheel examined able to serve. The advantage here is that the plate is independent and the Measurement can therefore be made without the disc. This is especially important if grinding wheels are to be tested in their place in the company, the measurement is to be carried out of the pothole, but here because of poor lighting on difficulties bumps. There is also the desired possibility of using the platelets as measurement documents of the grinding wheels to be tested, for what would otherwise be more cumbersome facilities used to be hit.

Claims (1)

PATENTANSPRUCH: Verfahren zum Ermitteln der Härte von Schleifscheiben durch Messen der Eindringtiefe eines kegeligen Schlagbolzens, dadurch gekennzeichnet, daß durch den Bolzen ein lose auf die Scheibe gelegtes Plättchen durchlocht und das Schlagloch des Plättchens ausgewertet wird.PATENT CLAIM: Method for determining the hardness of grinding wheels by measuring the penetration depth of a tapered firing pin, characterized in that that a plate loosely placed on the disc is perforated by the bolt and the pothole of the plate is evaluated.
DEK132031D 1933-11-04 1933-11-04 Method for determining the hardness of grinding wheels Expired DE633275C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK132031D DE633275C (en) 1933-11-04 1933-11-04 Method for determining the hardness of grinding wheels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK132031D DE633275C (en) 1933-11-04 1933-11-04 Method for determining the hardness of grinding wheels

Publications (1)

Publication Number Publication Date
DE633275C true DE633275C (en) 1936-07-23

Family

ID=7247508

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK132031D Expired DE633275C (en) 1933-11-04 1933-11-04 Method for determining the hardness of grinding wheels

Country Status (1)

Country Link
DE (1) DE633275C (en)

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