Torsion spring force measurement tool

Abstract

The invention relates to a torsion spring force measurement tool. The torsion spring force measurement tool is composed of a connection end (3), a mandrel (1), a pressing block (4), a nut (5) and a boss (6). The boss (6) is arranged on the upper portion of the right end of the mandrel (1). A concave face (7) is machined on the corresponding portion on the lower portion of the right end of the mandrel (1). A through hole is drilled in the boss (6) and the concave face (7). By means of the through hole, the end, provided with a bolt, of the pressing block (4) penetrates the right end of a spring, the boss (6) and the concave face (7) and extends to the lower portion of the mandrel (1), and the end, provided with the bolt, of the pressing block (4) is tightened through the nut (5). The tool is connected with a torque force measurement machine through the connection end (3). The left end of the spring makes contact with a slide block on the torque force measurement machine. By means of the torsion spring force measurement tool, the force measurement accuracy is improved, and the one-time inspection qualified rate of parts is ensured. The torsion spring force measurement tool is suitable for total distance torsion springs at key parts of helicopters, is also suitable for detection of all the torsion springs and fundamentally improves the measurement accuracy of the 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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