Screw-driven actuator for test frame

Details Screw-driven actuator for test frame Screw-driven actuator for test frame

1988-11-08

1989-09-26

Myracle, Jerry W.

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

Specimen clamp, holder, or support

73796, G01N 308

Patent

active

048691127

ABSTRACT:
A mechanical screw drive loading test frame has a crosshead on the frame with a grip supported from the crosshead, and a second grip for gripping a second end of a specimen on which a second grip is connected to an axially movable shaft which is ragidly supported and guided for axial movement for loading the specimen. The support for the second grip is in a second rigid cross member positioned very close to the second grip to prevent lateral loads from loading the specimen transversly. The loading shaft is loaded from below the rigid cross member by a screw through a coupling and mounting arrangement which isolates load caused by misalignment in the drive screw or drive motor from the movable shaft and second grip.

REFERENCES:
patent: 3135106 (1964-06-01), Lazan
patent: 3203232 (1965-08-01), Lehnig, Jr.
patent: 3357755 (1967-12-01), Danly
patent: 3375709 (1968-04-01), Holmes
patent: 3859848 (1975-01-01), Dripke
patent: 4096741 (1978-06-01), Sternstein
patent: 4620351 (1986-11-01), Teramachi
patent: 4705491 (1987-11-01), Andersson
Instron Corporation, Catalog page.
Schenk, Catalog page.

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