Discussion on Bionic Pangolin Wedge-tooth Drill Bit
DTH drilling rigs are major equipment for blast holes in mines with high usage.The drill bits are one of the key components of the DTH drilling rigs,which determines the drilling efficiency and final quality of the blast holes.Based on the principle of pangolin-based bionic wedge-tooth shape,the structure design and processing and installation technology of the drill bit are discussed.As shown in field industrial test in mines,the drilling efficiency of this type of drill bits are improved.Based on data of drilling speed of φ152 drill bits(6 inches)attached on high-pressure DTH hammers,comprehensive analysis shows that DTH drill bits with pangolin-based bionic wedge tooth provide a 12％-18％higher drilling speed compared with regular DTH drill bits with spherical teeth.
bionic pangolinwedge-tooth shapedown-the-hole drill bit
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