Assisting device for stretching test of fastener entity and testing method thereof

Abstract

The invention provides an assisting device for stretching test of a fastener entity and a testing method thereof. The device comprises a pair of device bodies, an upper connecting part and a lower connecting part, wherein each device body comprises a connecting rod and a connector; each connecting rod is fixed to one end of the corresponding connector; a dismounting and mounting hole is formed in the side surface of each connector; a threaded hole is formed in the surface of one end, far away from corresponding connecting rod, of each connector; each upper connecting part is of a disc structure of which the center is provided with a through hole and the outside diameter is provided with outer threads; each lower connecting part is of a disc structure of which the center is provided with a threaded hole and the outside diameter is provided with outer threads; the thread end of the fastener passes through the through hole in each upper connecting part in an upper connecting device and then is screwed into the threaded hole in each lower connecting part of a lower connecting device. According to the device for performing the stretching test on the fastener entity, the centering performance in the test process is ensured, and moreover, the mounting space of the fastener is big, so that the operation is simple; in addition, the fastener cannot splash in case of breaking, so that the safety is high.

Description

technical field [0001] The invention relates to an auxiliary device for the mechanical performance test of a fastener, in particular to an auxiliary device for a physical tensile test of a fastener and a testing method thereof. Background technique [0002] Fasteners are usually made of carbon steel or alloy steel. During engineering safety design and product production acceptance, it is required to test the mechanical properties of fasteners at a temperature of 10°C to 35°C. The mechanical properties of fasteners are the most basic and widely used performance indicators. The physical tensile test of fasteners is the most common way to obtain the tensile test data of the mechanical properties of fastener products. At present, when the physical tensile test of fasteners is carried out in China, the fixing methods of fasteners are tested using the connection methods provided in GB / T 3098.1 "Mechanical Properties of Fasteners Bolts, Screws and Studs". The tooling design Most o...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of fastener physical tension for the existing auxiliary device, which not only affects the accuracy of the test data, but also takes up space and makes it impossible to test the shorter size fasteners due to the use of gasket support. Auxiliary devices for testing and methods of testing using them

Images