Dry hanging drill bit

Abstract

The invention provides a dry hanging drill bit. Slagging and drainage are easy, the drilling depth is easy to control, and the drilling quality is improved. The dry hanging drill bit is composed of adrill rod and a cutting head eccentrically arranged at the bottom end of the drill rod. The drill rod and the cutting head are provided with communicating water guide holes, and a water guide groove communicating with the water guide holes is formed in the bottom face of the cutting head. The dry hanging drill bit is characterized in that he bottom face of the cutting head is a plane, the head endof the cutting head is more away from the drill rod compared with the tail end, and the thickness of the cutting head is gradually increased from the head end to the tail end; and a plurality of clamping spring grooves are formed in the drill rod at intervals. Due to the fact that the thickness of the cutting head gradually changes, the top face of a blind hole cannot be in contact with the top face of the head end in the drilling process, and a clearance formed in this position is beneficial for cooling water and waste slag to flow out of the blind hole. Aiming at different drilling depth requirements, clamping springs can be mounted in the proper clamping spring grooves; and when the surface of a plate is in contact with the clamping springs, it shows that the drilling depth meets the requirements, and the drilling depth can be accurately controlled more easily.

Description

technical field [0001] The invention belongs to the technical field of electric tools, and in particular relates to a drill bit. Background technique [0002] The stone dry hanging method, also known as the empty hanging method, is a new construction technology in the current wall decoration. This method uses metal pendants to directly hang the facing stone on the wall or hang it on the steel frame without grouting and pasting. The principle is to set the main stress points on the main structure, and fix the stone on the building through metal pendants to form a stone decorative curtain wall. At present, the common method of fixing plates is the back-bolt type. The specific method is to use professional drilling equipment to precisely process round holes with large inside and small outside on the back of the porcelain plate, insert the anchor bolts into the holes, and screw them into the screws. , so that the bottom of the anchor bolt is fully expanded, and matches the tap...

AI Technical Summary

Problems solved by technology

[0003] The cutting head in the dry-hanging drill bit used in the above-mentioned drilling equipment is not concentric with the drill rod, so that when drilling, a blind hole with a large inside and a small outside will be formed. The cutting head in the traditional dry-hanging drill is almost all In the flat plate structure, the upper and lower ends of the cutting head are in contact with the plate during the drilling process, making it difficult to discharge slag. The accumulation of waste slag in the blind hole will participate in the grinding of the grinding surface, resulting in low drilling efficiency, Poor drilling quality, which affects the aesthetics and stability of the panel fixing

In addition, because the thickness of the plate may have a certain deviation, the depth of the drilling must be flexibly adjusted according to the actual thickness of the plate when drilling, otherwise it will cause unevenness when fixing multiple plates. The problem is that at present, the drilling depth can only be controlled by the proficiency of the workers, and the accuracy and stability are poor.

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