Drilling machine for mechanical parts

The drilling machine for the mechanical parts comprises a base, stabilizing blocks are fixedly installed on the outer walls of the two ends of the bottom face of the base, a sliding groove is formed in the top face of the base, a two-way threaded rod is rotatably installed in the base, the right end of the two-way threaded rod penetrates through the outer wall of the base, and a handle is fixedly installed at the right end of the two-way threaded rod. The utility model relates to the field of drilling machines, through the mode that a rear contact head is installed on the outer wall of a drill bit in a sliding mode, when the drill bit drills a part, the contact head can conduct rebound motion, and therefore the effect of reducing the descending speed of the drill bit is achieved; the utility model relates to a drilling machine, in particular to a drilling machine, and aims to solve the problems that in the prior art, a drill bit needs to be replaced sometimes in the using process of the drilling machine to dr