Detection method of self-trapping threaded sleeve drilling bottom hole and anti-stretching and anti-twist values

Abstract

The invention discloses a detection method of a self-trapping threaded sleeve drilling bottom hole and anti-stretching and anti-twist values and aims to solve the problems that the prior self-trapping threaded sleeve drilling bottom hole detection method is tedious, stretching resistance is not detected, and potential safety hazards exist. The detection method of the self-trapping threaded sleeve drilling bottom hole and the anti-stretching and anti-twist values comprises the following steps: 1) drilling a bottom hole; 2) detecting the bottom hole by adopting a hole diameter detection device; 3) detecting verticality; and 4) detecting anti-stretching and anti-twist values of the a self-trapping threaded sleeve by adopting an anti-stretching and anti-twist value measurement device. The detection method of the self-trapping threaded sleeve drilling bottom hole and the anti-stretching and anti-twist values improves the percent of once installment pass of the self-trapping threaded sleeve, eliminates potential quality hazard, and reduces reworking and production cost.

Description

technical field [0001] The invention relates to the field of detection of self-tapping screw sleeves for aluminum alloy car bodies of urban rail vehicles, in particular to a method for detecting bottom holes and tensile and torsion resistance values ​​of self-tapping screw sleeves. Background technique [0002] The existing bottom hole diameter parameters before installation of self-tapping screw inserts are provided by the supplier, without considering the irresistible situation of on-site operations, and the vibration generated by the drilling tool and the vibration of the person themselves will make the bottom hole diameter larger than the selected drill flower diameter. [0003] At present, measuring tools such as vernier calipers are generally used to measure the diameter of bottom holes. The detection speed is slow, the purchase price of measuring tools is relatively expensive, and the maintenance requirements are high. [0004] When the bottom hole is drilled, insert ...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the cumbersome detection method of the existing self-tapping screw sleeve bottom hole, and the lack of detection of tensile force and potential safety hazards, the present invention aims to provide a self-tapping screw sleeve bottom hole and detection of tensile and torsion values method, this method can solve the problem that the bottom hole diameter is affected by the vibration generated by the drilling tool and the person's own vibration before the self-tapping screw sleeve is installed, and the actual diameter of the bottom hole drilled is larger than the selected drill flower diameter, and the bottom hole diameter can be adjusted and perpendicularity meet the technical requirements, and finally improve the detection method of the anti-torsion value of the self-tapping screw sleeve after installation, and at the same time solve the detection of the tensile value after reaching the pre-tightening force

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