Clamping, stretching and compression test device of multifunctional curved surface test piece

Abstract

The invention discloses a clamping, stretching and pressing test device of a multifunctional curved surface test piece. The device comprises two clamping heads having the same structure, two ends of the test piece are respectively clamped by one of the clamping heads to perform an X-axis direction stretching or compression test, the clamping head comprises: a device housing and a clamping module,the clamping module comprises at least two sub-modules, each of the sub-modules is connected end to end to form a chain-shaped structure, each of the sub-modules can be rotated by an angle on a YZ axis plane, the head end of the first sub-module of the chain-shaped structure is connected in the device housing, the n sub-modules at the tail of the chain-shaped structure are connected with the testpiece, the n sub-modules at the tail comprise an upper clamping finger and a lower clamping finger, a clamping opening is formed between the upper clamping finger and the lower clamping finger, and the diameter of the clamping opening is adjustable, and the test piece is clamped and fixed by the clamping opening. The clamping, stretching and pressing test device disclosed by the invention has wideapplicability, and the clamping is fast and stable without damaging the test piece.

Description

technical field [0001] The invention relates to the technical field of engineering testing and testing, in particular to a clamping tensile compression test device for a multifunctional curved test piece. Background technique [0002] Tensile testing machine is also called material tensile testing machine, tensile strength testing machine, etc. It is a new generation of mechanical testing equipment integrating computer control, automatic measurement, data acquisition, screen display, and test result processing. It is widely used in measurement Between rubber and plastics, metallurgy and iron and steel, machinery manufacturing, electronic appliances, automobile production, petrochemical and other industries. Ordinary tensile machines clamp the workpiece generally by two clamping blocks approaching each other to realize the clamping of the workpiece. It is mostly used for tensile tests of fixed-shaped materials such as steel bars and dog bones. The cross-section and shape of t...

AI Technical Summary

Problems solved by technology

Ordinary tensile machines clamp the workpiece generally by two clamping blocks approaching each other to realize the clamping of the workpiece. It is mostly used for tensile tests of fixed-shaped materials such as steel bars and dog bones. The cross-section and shape of the specimen have high requirements. , for arc-shaped specimens (such as arc-shaped specimens cut from the corners of square steel pipes, arc-shaped specimens cut from round pipe specimens), it is often difficult for the testing machine to clamp the specimens, or slip or The clamping method before the test will greatly damage the cross-sectional shape of the specimen, making it difficult to carry out the axial tension test

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