The utility model discloses a kind of drilling
machine drill bit assemblies of accurate positioning, it is related to drilling
machine technical field, it includes the drilling
machine rack of back outer wall fixed installation controller, the drilling machine rack is connected with the interface box by electric lifting mechanism, the lateral wall of interface box is fixedly connected with cover, and the side of cover is equipped with drilling machine
drill bit structure, the drilling machine drilling structure includes switching shaft, switching disc, first
stepper motor, worm, worm wheel and four electric
drill bits.The electric lifting mechanism of the utility model is set, when electric
drill bit is drilled downwards, the drilling depth of electric
drill bit can be accurately positioned by
infrared distance sensor, so as to improve the drilling effect of electric
drill bit;Different models of drilling machine drill bit can be switched online to adapt to the use requirement of different situations, so that the cumbersome disassembly
replacement procedure is saved, and it is beneficial to improve the replacement use efficiency of drill bit.