DE689650C - rer loads of materials testing machines - Google Patents

rer loads of materials testing machines

Info

Publication number
DE689650C
DE689650C DE1937L0092270 DEL0092270D DE689650C DE 689650 C DE689650 C DE 689650C DE 1937L0092270 DE1937L0092270 DE 1937L0092270 DE L0092270 D DEL0092270 D DE L0092270D DE 689650 C DE689650 C DE 689650C
Authority
DE
Germany
Prior art keywords
loads
testing machines
rer
materials testing
deformation
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
DE1937L0092270
Other languages
German (de)
Inventor
Heinrich Vogt
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.)
Losenhausenwerk Duesseldorfer Maschinenbau AG
Original Assignee
Losenhausenwerk Duesseldorfer Maschinenbau AG
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 Losenhausenwerk Duesseldorfer Maschinenbau AG filed Critical Losenhausenwerk Duesseldorfer Maschinenbau AG
Priority to DE1937L0092270 priority Critical patent/DE689650C/en
Application granted granted Critical
Publication of DE689650C publication Critical patent/DE689650C/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
    • G01N3/02—Details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/06—Indicating or recording means; Sensing means
    • G01N2203/0664—Indicating or recording means; Sensing means using witness specimens

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)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Description

Kontrollstab, insbesondere zur Nachprüfung.kleinerer Lasten von Werkstoffprüfmaschinen Zur Nachprüfung von Werkstoffprüfmaschinen werden vielfach Kontrollstäbe aus vollem Material benutzt, deren Verlängerung unter der Last mit Spiegelapparaten 0. dgl. gemessen wird. Die untere Durebmessergrenze für derartige Kontrollstäbe liegt bei 25 mm, da sich der Spiegelapparat oder die an seiner Stelle verwendete Längenmeßvorrichtung bei kleineren .Durchmessem nicht mehr anbringen läßt. Diese Kontrollstäbe sind zur Prüfung von kleineren Lasten nicht mehr geeignet.Control rod, especially for checking smaller loads of materials testing machines For the verification of material testing machines, control rods are often used from full Material used, the extension of which under the load with mirror devices 0. is measured. The lower diameter limit for such control rods is included 25 mm, since the mirror device or the length measuring device used in its place with smaller .diameter can no longer be attached. These control rods are for Testing of smaller loads is no longer suitable.

Anderseits sind sog. Ringkraftprüfer bekannt, welche eine ringförmige oder ähnliche Gestalt von verhältnismäßig großen Abmessungen besitzen und welche durch die festzustellende Last verformt werden. Diese Ringkraftprüfer haben den Nachteil, daß zur Erzielung einer genügenden Verformung die Ab messungen, also beispielsweise der Durchmesser des Ringes, verhältnismäßig groß sein müssen und daß infolgedessen die beanspruchten Teile des Prüfgerätes verhältnismäßigweit von der Zugmittellinie der nachzuprüfenden Werkstoffprüfmaschine entfernt liegen. Dies führt wiederum leicht zu den bekannten Schwierigkeiten ungleicher Beanspruchung und damit ungenauer Messung. On the other hand, so-called ring force testers are known, which have a ring-shaped or similar shape of relatively large dimensions and which deformed by the load to be detected. These ring force testers have the Disadvantage that to achieve sufficient deformation from the measurements, so for example the diameter of the ring, must be relatively large and that as a result the stressed parts of the test device are relatively far from the traction center line are away from the material testing machine to be checked. Again, this leads easily to the known difficulties of unequal loading and thus inaccurate measurement.

Diese Nachteile werden durch den erfindungsgemäßen Kontrollstab, der insbesondere zur Nachprüfung kleinerer Lasten von Werkstoffmaschinen dient, beseitigt. These disadvantages are alleviated by the control rod according to the invention, which is used in particular to check smaller loads on material machines, eliminated.

Die Erfindung besteht darin, daß die zur Anbringung der Spiegelapparate o. dgl. dienenden Teile des Kontrollstabes zwar einen hierfür ausreichenden Durchmesser besitzen, der dazwischenliegende Teil jedoch zur Erzielung einer genügenden Verformung aus zwei oder mehreren hintereinandergeschalteten, an sich bekannten Verformungskörpern ringförmiger oder ähnlicher Gestalt mit verhältnismäßig kleinen Abmessungen besteht. The invention consists in that the attachment of the mirror apparatus o. The like. Serving parts of the control rod although a sufficient diameter for this own, but the intermediate part to achieve sufficient deformation of two or more deformation bodies known per se connected in series annular or similar shape with relatively small dimensions.

Hierdurch wird eine genügend große Gesamtverformung trotz kleinerer Abmessung und insbesondere kleinerer Abstände der beanspruchten Teile von der Zugmittellinie erreicht.This results in a sufficiently large overall deformation despite a smaller one Dimension and especially smaller distances between the stressed parts and the traction center line achieved.

In der Zeichnung ist der Erfindungsgegenstand beispielsweise und schematisch dargestellt. In the drawing, the subject matter of the invention is, for example, and shown schematically.

Claims (1)

PATENTANSPRUCH: Kontrollstab, insbesondere zur Nachprüfung kleinerer Lasten von Werkstoffprüfmaschinen mittels Spiegelapparate o. dgl., dadurch gekennzeichnet, daß seine zur Anbringung der Spiegelapparate o. dgl. dienenden Teile zwar einen hierfür ausreichenden Durchmesser besitzen, der dazwischenliegende Teil jedoch zur Erzielung einer genügenden Verformung aus zwei oder mehreren hintereinandergeschalteten, an sich bekannten Verformungskörpern ringförmiger oder ähnlich.er Gestalt mit verhältnisrnäßig kleinen Abmessungen besteht. PATENT CLAIM: Control rod, especially for checking smaller ones Loads of material testing machines by means of mirror devices or the like, characterized in that that his for attaching the mirror apparatus o. The like. Serving parts although one have a sufficient diameter for this purpose, but the part in between is used for Achieving sufficient deformation from two or more series-connected, known deformation bodies of annular or similar shape with relatively small dimensions.
DE1937L0092270 1937-03-26 1937-03-26 rer loads of materials testing machines Expired DE689650C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1937L0092270 DE689650C (en) 1937-03-26 1937-03-26 rer loads of materials testing machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1937L0092270 DE689650C (en) 1937-03-26 1937-03-26 rer loads of materials testing machines

Publications (1)

Publication Number Publication Date
DE689650C true DE689650C (en) 1940-03-29

Family

ID=7287449

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1937L0092270 Expired DE689650C (en) 1937-03-26 1937-03-26 rer loads of materials testing machines

Country Status (1)

Country Link
DE (1) DE689650C (en)

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