Self-tapping and self-locking bolt

Abstract

The invention relates to the field of fasteners, in particular to a self-tapping and self-locking bolt. The bolt comprises a bearing sliding groove frame, wherein an auxiliary tapping plate is clampedinside the bearing sliding groove frame in a sliding mode, fixed scribers are symmetrically and fixedly welded to one side of the bearing sliding groove frame, the bearing sliding groove frame comprises an open groove, shifting piece devices, a sliding groove plate, first sliding grooves, second sliding grooves and third sliding grooves, the second sliding grooves are symmetrically formed in thetop end and the bottom end inside the sliding groove plate, the third sliding grooves are symmetrically formed in the top end and the bottom end inside the sliding groove plate at equal intervals, thethird sliding grooves are located in the rear ends of the second sliding grooves, the first sliding grooves are symmetrically formed in the top end and the bottom end of one side of the sliding groove plate, and the shifting devices are symmetrically clamped inside the first sliding grooves in a sliding mode. Through cooperative use of the fixed scribers and a scribing device, scribing work can be rapidly completed, and through mutual matching of an L-shaped sliding key, the second sliding grooves and the third sliding grooves, a self-tapping screw is prevented from deviating while screwing is conducted at different positions.

Description

technical field [0001] The invention relates to the field of fasteners, in particular to a self-tapping and self-locking bolt. Background technique [0002] Self-tapping screws are used for non-metallic or soft metals. They can be fixed without drilling holes and tapping. Drill, extrude, and press" the corresponding threads to make them fit closely with each other. [0003] However, there are still some problems in the use and operation of self-tapping screws, such as: [0004] Self-tapping screws are usually self-tapping inwards manually or electrically. During the inward screwing process, because the external force cannot be vertically inward, it is possible that the self-tapping screw may be screwed inward during the inward screwing process. The drilling direction is shifted. [0005] Before screwing the self-tapping screw, employees need to draw a line on the plate for positioning, and then they can carry out self-tapping work according to the line body, so that self-...

AI Technical Summary

Problems solved by technology

[0004] Self-tapping screws are usually self-tapping inwards manually or electrically. During the inward screwing process, because the external force cannot be vertically inward, it is possible that the self-tapping screw may be screwed inward during the inward screwing process. The drilling direction is shifted

[0005] Before screwing the self-tapping screw, employees need to draw a line on the plate for positioning, and then they can carry out self-tapping work according to the line body, so that self-tapping and marking need to be carried out separately, so a lot of screwing self-tapping screws are required will directly affect work efficiency

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