DE314925C - - Google Patents
Info
- Publication number
- DE314925C DE314925C DENDAT314925D DE314925DA DE314925C DE 314925 C DE314925 C DE 314925C DE NDAT314925 D DENDAT314925 D DE NDAT314925D DE 314925D A DE314925D A DE 314925DA DE 314925 C DE314925 C DE 314925C
- Authority
- DE
- Germany
- Prior art keywords
- workpiece
- axial
- shaft
- bearing housing
- positive
- 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.)
- Active
Links
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000035882 stress Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F7/00—Twisting wire; Twisting wire together
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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- 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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
Diese Erfindung· betrifft eine Vorrichtung, welche, im Verein mit der im Hauptpatent beschriebenen Vorrichtung, gestattet, die in einem Versuchsstück auftretende Längsspannung und Formänderung zu messen, ■ wenn dasselbe auf Verdrehung beansprucht wird. Hauptsächlich bei Spiral- und Schraubenfedern ist es von großer Wichtigkeit, die Längsspannung (Zug- oder Druck) bzw. Formänderung beim Torsionsversuch kennen zu lernen.This invention relates to a device which, in conjunction with that in the main patent described device, allows the longitudinal stress occurring in a test piece and to measure deformation, ■ when the same is stressed to twist. Mainly with spiral and coil springs it is of great importance that the To get to know longitudinal tension (tension or compression) or change in shape during torsion tests.
Die Ausführung der Vorrichtung ist in folgender Weise gedacht:The device is designed as follows:
Die Hauptantriebswelle g ist im Gehäuse f gelagert und in der Mitte mit einem Bund . versehen, gegen welche sich die Schraubenfedern h, h1 abstützen. Mit dem anderen Ende legen sich dieselben gegen die Innenwand des Gehäuses f an. Diese beiden, gleich starken Federn halten im Ruhezustand die Antriebswelle g in der Mittelstellung. Die zAvischen dem Bund der Welle und den Federn beim Drehen auftretende gleitende Reibung wird durch Einbau von Kugellagern u. dgl. auf ein Minimum beschränkt.The main drive shaft g is mounted in the housing f and in the middle with a collar. provided against which the coil springs h, h 1 are supported . With the other end the same lie against the inner wall of the housing f . These two equally strong springs hold the drive shaft g in the middle position in the rest state. The sliding friction that occurs between the collar of the shaft and the springs during rotation is reduced to a minimum by installing ball bearings and the like.
Wird nun z. B. durch Drehen an der Handkurbel die Versuchsfeder F verdreht und werden hierdurch Spannungen sowie Formveränderungen in achsialer Richtung hervorgerufen, so kann man letztere an der Skala i ablesen, während die Achsialspanmmg sich auf den Winkelhebel α bzw. die Meßdosen b, b1 überträgt, so daß die achsiale Schubkraft an den Manometern k bzw. k1 abgelesen werden kann.If now z. B. twisted the test spring F by turning the hand crank and this causes stresses and changes in shape in the axial direction, so you can read the latter on the scale i , while the Achsialspanmmg is transferred to the angle lever α or the load cells b, b 1 , so that the axial thrust can be read on the pressure gauges k or k 1.
Um aber die Übertragung dieser Kraft zu ermöglichen, ist die AVelle w nicht, wie im Anspruch 3 des Hauptpatentes angegeben, gegen achsiale Verschiebung gesichert, sondern kann sich in dieser Richtung etwa 1 mm bewegen. Diese geringe Bewegung, welche ohne Einfluß auf das zu messende Drehmoment ist, genügt aber vollkommen, um den Achsialdruck, welcher im Versuchsstück F vorhanden ist, in den Meßdosen b, b1 bzw. den Manometern k, Ic1 genau zu messen.However, in order to enable the transmission of this force, the A-shaft w is not, as stated in claim 3 of the main patent, secured against axial displacement, but can move about 1 mm in this direction. This slight movement, which has no effect on the torque to be measured, is completely sufficient to precisely measure the axial pressure, which is present in the test piece F, in the load cells b, b 1 or the manometers k, Ic 1.
Äußert sich in dem Versuchsstück F eine Zugspannung (kg) und Verlängerung (cm), so wird die Feder h1 zusammengedrückt und der Winkelhebel α drückt auf die Meßdose l·1, so daß die Größe der Achsialkraft am Manometer k1 abgelesen werden kann.If the test piece F shows tensile stress (kg) and elongation (cm), the spring h 1 is compressed and the angle lever α presses on the load cell l · 1 , so that the magnitude of the axial force can be read on the pressure gauge k 1.
Umgekehrt kommen bei Druckspannung und Zusammendrückung des Probestückes F die Feder h, Meßdose b und Manometer k zur Wirkung.Conversely, with compressive stress and compression of the test piece F, the spring h, load cell b and manometer k come into effect.
Einen weiteren Vorteil bietet die Vorrichtung noch dadurch, daß man mittels der Spindel j das Lagergehäuse / in der Längsrichtung verschieben und somit eine beliebigeThe device offers a further advantage in that one by means of the spindle j move the bearing housing / in the longitudinal direction and thus any
Vorspannung bzw. Längenänderung im Versuchsstück F hervorrufen und somit das Versuchsstück unter einer vorher bestimmten Achsialspannung' bzw. Längenänderung auf Torsion prüfen kann.Pretension or change in length in the test piece F and thus test the test piece for torsion under a previously determined axial tension or change in length.
Claims (3)
Publications (1)
Publication Number | Publication Date |
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DE314925C true DE314925C (en) |
Family
ID=567712
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT314925D Active DE314925C (en) |
Country Status (1)
Country | Link |
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DE (1) | DE314925C (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2420385A (en) * | 1944-07-31 | 1947-05-13 | Goodrich Co B F | Torsional testing apparatus |
US2444016A (en) * | 1945-03-31 | 1948-06-22 | Hamilton Watch Co | Gear testing apparatus |
US2765655A (en) * | 1954-08-17 | 1956-10-09 | Scott Lester | Torsion spring testing devices |
US2799162A (en) * | 1954-01-28 | 1957-07-16 | Harold C R Carlson | Apparatus for testing torsion springs |
US3222922A (en) * | 1961-06-12 | 1965-12-14 | Isaac Peter | Ski and boot relative torque indicators |
US3233454A (en) * | 1963-02-25 | 1966-02-08 | Federal Mogul Bower Bearings | Spring tester |
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0
- DE DENDAT314925D patent/DE314925C/de active Active
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2420385A (en) * | 1944-07-31 | 1947-05-13 | Goodrich Co B F | Torsional testing apparatus |
US2444016A (en) * | 1945-03-31 | 1948-06-22 | Hamilton Watch Co | Gear testing apparatus |
US2799162A (en) * | 1954-01-28 | 1957-07-16 | Harold C R Carlson | Apparatus for testing torsion springs |
US2765655A (en) * | 1954-08-17 | 1956-10-09 | Scott Lester | Torsion spring testing devices |
US3222922A (en) * | 1961-06-12 | 1965-12-14 | Isaac Peter | Ski and boot relative torque indicators |
US3233454A (en) * | 1963-02-25 | 1966-02-08 | Federal Mogul Bower Bearings | Spring tester |
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