A spiral lip drill bit

Abstract

The invention discloses a drill bit with spiral lip surfaces. The drill bit comprises a drill bit body, a plurality of conical spiral carcasses, spiral water gaps and sector blocks. The conical spiral carcasses are disposed on the drill bit body in a surrounded manner. The sector blocks are disposed on the conical spiral carcasses. The spiral water gaps are formed among the conical spiral carcasses and are of a rightward spiral single-head shape and a multi-head spiral shape. The curve surface, forming a core part, of the each sector block and the curve surface, forming a hole wall part, of the sector block are located on a plane with the radius being R. The drill bit with the spiral lip surfaces has the advantages that various rocks can be crushed during drilling under different rock geological condition, stratum drilling application range of the drill bit is increased, friction force is lowered, radiation is facilitated, abnormal abrasion is avoided, complex situations are avoided, drilling speed and drill bit size are increased, accidents such as drill bit burning and jamming are reduced, and drill bit service life is prolonged.

Description

technical field [0001] The invention belongs to the field of drill bit structure design, in particular to a helical lip drill bit. Background technique [0002] With the rapid development of the national economy, the demand for mineral resources is increasing rapidly, and increasing the strength of prospecting has been put on the agenda. Diamond drill bits have the advantages of large footage and fast mechanical drilling speed, so they are widely used in core drilling. For this reason, many researchers at home and abroad have conducted in-depth research from the aspects of technology, materials, and structure. At present, most of the hard rock drilling in the geological exploration field uses impregnated diamond bits. Due to the unreasonable structural design of the existing diamond bits, the broken rock parts are vulnerable to abrasive wear of the rock and erosion wear of the coolant during use. Rock powder will be difficult to discharge, poor powder discharge effect, poo...

AI Technical Summary

Problems solved by technology

At present, most of the hard rock drilling in the geological exploration field uses impregnated diamond bits. Due to the unreasonable structural design of the existing diamond bits, the broken rock parts are vulnerable to abrasive wear of the rock and erosion wear of the coolant during use. Rock powder will be difficult to discharge, the effect of powder discharge is poor, the heat dissipation is poor, and accidents such as burning and sticking of drills are easy to occur, which directly affects the construction progress and production costs, and greatly reduces the service life.

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