Drill bit and installation method of plug

Abstract

The invention provides a drill bit. The drill bit comprises an annular protruding part on the rear portion of a drill rod, an annular part, a swinging positioning side boring mechanism and a blade head for drilling and boring; an annular joint groove of which the groove opening faces downwards in an inclined mode is formed in the annular protruding part; a ring-arc joint head corresponding to the annular joint groove is arranged on the annular part, the annular part is arranged outside the annular protruding part in a sleeving mode through the ring-arc joint head, the bottom of the annular part has a shock-absorption drilling depth limiting structure, and a whole body formed by the drill rod and a drill handle is formed by a steel bar which enters a die spotting machine to be subjected to die spotting hot forging pressing or hot stamping. The invention further provides an installation method of a plug. According to the drill bit and the installation method of the plug, the drill rod is formed by die spotting in one time, joint limiting is conducted by taking an axis core as a limiting base point, the manufacturing cost is low, the adverse effect on concrete around a hole is avoided when a bottom cutting hole with the expanding bore bottom is drilled, the precision of the hole is guaranteed, and the service life of the drill bit is prolonged.

Description

technical field [0001] The invention relates to a drill bit, which is suitable for drilling holes and bottom expansion boring on various building concretes. It is especially suitable for ceiling hanging and construction on thin walls, which can effectively prevent damage to adjacent rooms caused by impact. The invention also relates to a bolt installation method. Background technique [0002] There are mainly two types of drill bits for concrete drilling and reaming: [0003] Expansion anchor bolts based on the principle of linear expansion have been banned from being used in curtain walls, lifeline projects, etc. due to their poor safety. However, the existing cutting and reaming anchor bolts, which are considered safer, are due to the problem of cutting and reaming drilling technology. , there are also more problems: [0004] One, the cost of the drill bit is high, the life is too short, and can only be used for larger holes, and the market audience is narrow. Such as: ...

AI Technical Summary

Problems solved by technology

[0007] Our country has entered the era of labor shortage and machine generation. No matter in Europe, America or my country, this kind of drill bit for expanding and boring can only be produced by using numerical control equipment. The price is between several hundred yuan and nearly one thousand yuan. The cost of drill bits has exceeded the selling price of anchor bolts, which seriously restricts the development of the industry

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