Wrenching performance testing device for bolt screwing groove and testing method thereof

Abstract

The invention discloses a wrenching performance testing device for a bolt screwing groove. The wrenching performance testing device comprises a torque wrench, a torque wrench fixing end, a bracket, ascrewing groove screwdriver set head, a three-jaw chuck, a three-jaw chuck fixing plate, a cover plate, an axis force sensor housing, an axis force sensor force bearing plate, an axis force sensor, anut with a handle, a lifting screw lead, a base and an axis force sensor display terminal. The torque wrench fixing end is fixedly connected to the bracket and the torque wrench and the screwing groove screwdriver set head are separately mounted at two ends of the torque wrench fixing end; the three-jaw chuck is fixedly connected to the three-jaw chuck fixing plate, a chuck pin roll of the three jaw chuck fixing plate is inserted into a chuck pin roll hole of the cover plate, a cover plate pin roll of the cover plate is inserted into a cover plate pin roll hole of the axis force sensor housing, the axis force sensor is mounted in the axis force sensor housing, and a housing pin roll at the bottom is inserted into a housing pin roll hole in the top of the top of the lifting lead screw; andthe numerical value of the axis force sensor is displayed through the axis force sensor display terminal. The device and method can detect the wrenching performance of the bolt screwing groove and control application of an axial load precisely.

Description

technical field [0001] The invention belongs to the technical field of detection and testing, and in particular relates to a device for testing the screwing performance of a screwdriver groove of a bolt and a testing method thereof. Background technique [0002] In the fields of civil and aviation, there are many kinds of screwdriver grooves for bolts, including cross grooves, slotted grooves, hexagonal sockets and hexagonal sockets, etc. The twisting torque is an important test item for evaluating the anti-twisting performance of the screwdriver grooves. By selecting the bit that matches the groove number of the screwdriver, use a torque wrench to apply the torque required by the standard or document to the screwdriver groove, and at the same time apply an axial load of 49N or 98N in the axial direction of the bolt, and check the screwdriver of the bolt after the test Whether the groove is deformed or damaged. [0003] For different screwdriver grooves, choose different bi...

AI Technical Summary

Problems solved by technology

[0003] For different screwdriver grooves, choose different bit types. The axial load can be realized by means of weights, force sensors, and push-pull force gauges. However, the operation in the

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