Shearing clamp

Abstract

The invention provides a shearing clamp, which belongs to the technical field of shearing intensity test equipment and solves the technical problems of test inaccuracy and the like of the existing test clamp. The shearing clamp comprises a lower clamp plate, an upper clamp plate, a positioning element, a first fixing plate and a second fixing plate, wherein the end parts of the lower clamp plate and the upper clamp plate are hinged; the upper clamp plate and the lower clamp plate are attached; a first accommodating groove and a second accommodating groove are respectively formed in the upper clamp plate and the lower clamp plate; the first fixing plate and the second fixing plate can be respectively embedded into the first accommodating groove and the second accommodating groove; the positioning element is provided with an accommodating cavity capable of accommodating the lower clamp plate and the upper clamp plate; an opening is formed in one inner side wall of the accommodating cavity; the bottom surface of the lower clamp plate and the top surface of the upper clamp plate are respectively attached and leaned to the bottom wall and the top wall of the accommodating cavity; the outer side surface of the lower clamp plate is attached to the inner side wall of the accommodating cavity. In the test process of the shearing clamp, the eccentricity generated in the shearing force exertion process can be avoided; the test accuracy can be well ensured.

Description

technical field [0001] The invention belongs to the technical field of shear strength testing equipment, and relates to a shear fixture. Background technique [0002] In the field of micromachining, in the prior art, after welding monocrystalline silicon and glass, the joint performance of the welded part will be destroyed under the change of ambient temperature and humidity. Using laser welding monocrystalline silicon and glass can effectively Avoid these disadvantages. After the two are welded, it is necessary to test the shear strength of the welded sample. [0003] The existing method for measuring the shear strength of a welded sample is to use a tensile testing machine to break the sample after clamping both ends of the sample with a clamp. During the operation of this method, due to the high brittleness of single crystal silicon and glass, during the clamping process, the sample is easily broken by clamping the sample with pressure; in addition, the sample is thin a...

AI Technical Summary

Problems solved by technology

During the operation of this method, due to the high brittleness of single crystal silicon and glass, during the clamping process, the sample is easily broken by clamping the sample with pressure; in addition, the sample is thin and the size is accurate. It is difficult to accurately control the position of the tension device, and it is easy to produce eccentricity, which has a great impact on the test

When the strength of the weld seam is high, the tensile loading will easily cause the silicon chip to break at the weld seam, so that accurate test data cannot be obtained

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