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The present application relates to tap processing technical field, specifically to tap chip machine, the inside of machine tool equipment is provided with drive assembly, the front end of drive assembly is provided with polishing clamping disc, the front end of polishing clamping disc is uniformly fixed and installed with multiple clamping shells, the both ends of each clamping shell are slidably installed with moving clamping rod, one end of each moving clamping rod is fixedly installed with clamping block in clamping shell, the other end of each moving clamping rod is rotatably installed with push rod, every two corresponding push rods are rotatably connected, a plurality of limiting holes are uniformly formed on each polishing clamping disc, the hinged end of every two corresponding push rods is installed with sliding rod in limiting hole, and a limiting shell is fixedly sleeved on each sliding rod and located at the rear side of polishing clamping disc. By polishing the edge of tap, the edge burrs of batch taps can be polished and removed, effectively avoiding defects such as scratches and indentation on the surface of workpiece thread during tapping, thereby prolonging the overall service life of tap.