A metal material uniaxial performance test fixture

Abstract

The invention relates to a metal material monoaxial performance test clamp, comprising a loading device, a transmitting device and a clamping device, wherein the loading device consists of a loading shaft, a connecting plate and a connecting bracket; the transmitting device consists of two supports left and right, two dual-V-shaped sliding blocks left and right, and a dual-V-shaped linear sliding rail; the clamping device comprises two clamp heads left and right, and insides of the clamp heads are provided with sample locknuts. By regulating a loaded direction, a load size or displacement of a load in the vertical direction on the loading shaft, a uniaxial performance test on a metal rodlike or platy sample in the clamp can be realized. The clamp is simple in integral structure, good in transmission rigidity, stable in system operation, and high in space use ratio, can conveniently realize a specific test of the sample by controlling the load or the displacement, is favorable for system control and geometric sense measurement, and can improve a loading rate of the load by arranging a symmetric transmission structure.

Description

technical field [0001] The invention belongs to the technical field of metal material performance testing equipment, and in particular relates to a metal material uniaxial performance testing jig. Background technique [0002] Metal materials occupy an important position in modern industrial production because of their superior properties, and have been widely used in various industries. If people want to use materials effectively, they must first understand the properties of materials. The properties of metal materials determine their own scope of application and rationality of application. The properties of metal materials are mainly divided into four aspects: physical properties, chemical properties, mechanical properties (or called mechanical properties) and process properties. Among them, mechanical properties are the main basis for the design and selection of mechanical parts. Therefore, the testing of mechanical properties It is one of the most important and main con...

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Problems solved by technology

[0004] However, considering the cost of the whole machine, the existing uniaxial performance testing machines only set the power output on one end of the sample, that is, the single-end fixture, and the loading rate of the load is completely restricted by the response and loading rate of the power source. The loading rate range cannot be increased by adjusting the structure

In addition, when performing uniaxial performance tests, the drive screw is required to have enough travel space in the direction of uniaxial movement. For the current unilateral loading equipment, it is required to have a sufficiently long screw length, especially for the elongation. For large metal materials, this also greatly reduces the transmission stiffness of the whole machine during loading

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