Self-locking nut testing machine driving collet torsion angle measurement jig

Abstract

The invention provides a self-locking nut testing machine driving collet torsion angle measurement jig. The self-locking nut testing machine driving collet torsion angle measurement jig comprises a jig bracket (1), a clamping lever (2), a fastening screw (3), a fastening screw (4) and a fastening screw (5). The jig bracket (1) is of a concave groove structure. One end of the jig bracket is of an L shape, and the other end of the jig bracket is of a C shape. The C-shaped end is provided with the fastening screw (3) in the horizontal direction and provided with the fastening screw (5) in the vertical direction. The L-shaped end is provided with the fastening screw (4) in the horizontal direction. The fastening screw (3) is matched with the fastening screw (4) in the horizontal direction to play a fastening role. The fastening screw (5) is matched with the jig bracket (1) in the vertical direction to play a fastening role.

Description

technical field [0001] The invention belongs to the technical field of length calibration, and relates to a self-locking nut testing machine active chuck torsion angle measuring fixture. Background technique [0002] At present, there is no special calibration standard fixture when calibrating the torsion angle accuracy of the active collet of the self-locking nut testing machine, and the calibration standard is usually abutted on a small plane of the cylindrical surface of the active collet. [0003] Problems existing in the prior art: [0004] 1) The calibration standard uses an optical inclinometer. Before calibration, adjust the active chuck of the self-locking nut testing machine to the 0° position. Since there is no fixed plane on the active chuck, only the bottom plane of the optical inclinometer can be close to the active chuck. The outer edge of the cylinder is on the facet cut out by the locking screw and the cylinder intersecting, and the facet is used as the fix...

AI Technical Summary

Problems solved by technology

Because the plane is too small, it is unstable when contacting the bottom of the optical inclinometer, the optical inclinometer is prone to shaking, and the adjustment of the water bubble of the optical inclinometer is unstable, which affects the accuracy of the reading and leads to inaccurate calibration results.

[0005] 2) The existing technology requires a long adjustment time when calibrating each angle value due to the lack of a stable fixed plane when the optical inclinometer is used

[0006] 3) The existing clamping method does not meet the requirements of calibration accuracy

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