Torsion spring force measuring tooling

Abstract

The invention relates to a torsion spring force-measuring tool, which is composed of a connection end (3), a mandrel (1), a pressure block (4), a nut (5), and a boss (6). The upper part of the right end is provided with a protruding platform (6), and a concave surface (7) is processed at the corresponding part of the lower part of the right end of the mandrel (1), and a through hole is drilled on the protruding platform (6) and the concave surface (7). , put the end of the pressing block (4) with the bolt through the right end of the spring, the boss (6) and the concave surface (7) and extend out of the lower part of the mandrel (1), then tighten the pressing block (4) with the nut (5) One end with bolts; the tooling is connected to the torsion dynamometer through the connection end (3); the left end of the spring contacts the slide block on the torsion dynamometer. The invention improves the accuracy of the force measurement and ensures the passing rate of parts for one-time inspection. It is not only suitable for the collective pitch torsion spring of the key parts of the helicopter, but also suitable for the detection of all torsion springs, which fundamentally improves the measurement accuracy of torsion springs.

Description

technical field [0001] The invention belongs to the technical field of torsion spring force value testing, and in particular relates to a torsion spring installation tool. Background technique [0002] At present, especially the collective distance torsion spring is usually in the The torque required to withstand is usually between 2000 Newton and 5000 Newton. Whether it is a slight change in processing size, testing tooling, testing equipment, testing methods, etc., it will cause a large change in torque, so every link from processing to testing are very important. In the application of torsion springs with small loads, traditional force measuring tools can basically guarantee the accuracy due to small loads and relatively small errors. See figure 1 , the structure and principle of the existing torsion spring force measuring tooling are as follows: select the diameter and length of the mandrel according to the structure of the spring, drill a hole at the end of the mandr...

AI Technical Summary

Problems solved by technology

When testing a torsion spring with a large load, since the contact side of the mandrel and the spring is a circular arc surface, its flatness is not enough, the installation is unstable, the eccentricity phenomenon is serious, and the shaft holding phenomenon causes the spring force value to be higher by nearly 25%-50. %, the detection error is large, unable to meet the drawing requirements, seriously affecting the normal delivery of products

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