Crimping resistance nondestructive measurement tool

Abstract

The invention provides a nondestructive measurement tool for crimping resistance of a wire, and the tool is simple in structure, rapid in clamping and accurate in measurement. The nondestructive measurement tool includes two clamp bodies and an external short circuit plate, the two clamp bodies have the same structures, each clamp body includes an upper support, a middle screwing assembly, a middle support assembly and a bottom pedestal assembly, the support and the pedestal assembly are connected in a fastened manner through a bolt and provide support and fixing for the middle screwing assembly, the bottom of a screw of the screwing assembly is equipped with an elastic pressing block, and clamping force is applied to a measured wire through rotation of the screw. The two clamp bodies are placed side by side when working, and two ends of the external short circuit plate are pressed through the elastic pressing blocks on the screwing assemblies of the clamp bodies, thereby realizing connection. A spiral clamping principle is adopted to clamp a workpiece, thereby realizing accurate measurement of crimping resistance of wires with various lengths and various section diameters (0.08mm<2>~3mm<2>).

Description

technical field [0001] The invention relates to a tool for non-destructive measurement of crimping resistance, in particular to a tool for non-destructive measurement of micro-resistance of wire crimping parts, which can conveniently measure the resistance of crimping parts in aerospace products. Background technique [0002] In the field of aerospace, crimping refers to a connection method that uses cold crimping tools or equipment to plastically deform the wires at room temperature to form a metal combination. Crimping resistance is an important parameter to characterize the electrical performance of crimping connections. Improper crimping resistance is the main cause of temperature rise in electrical connectors. Whether the crimping resistance exceeds the standard directly affects the stability and stability of electronic equipment. reliability. The test range of crimping resistance is milliohm or microohm level. At present, most of them are measured by milliohm meter. D...

AI Technical Summary

Problems solved by technology

The test range of crimping resistance is milliohm or microohm level. At present, most of them are measured by milliohm meter. Due to the small size of the milliohm meter probe, it is time-consuming to manually connect the probe of the milliohm meter to the measured point. It is necessary to peel off the insulating sheath of the crimped wire for destructive measurement. This measurement method is affected by the easy oxidation of the probe of the milliohm meter measuring instrument and the limitation of the function of the milliohm meter measuring instrument. The measurement efficiency is low and the measurement data Disadvantages of inaccuracy and poor repeatability

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