Inner taper hole machining cutter

The invention discloses an inner taper hole machining tool which comprises a lower tool apron, an inner taper hole tool bar, an upper tool apron and a contour wheel. One side of the upper tool apron is movably connected with the lower tool apron through a guide mechanism, so that the upper tool apron can move relative to the lower tool apron; the inner taper hole cutter bar and the profiling wheel are linearly fixed on the other side of the upper cutter holder at intervals; the inner taper hole cutter bar comprises a cutter bar and a blade; the cutter bar is an L-shaped bar body formed by a cross bar fixed in the cutter bar mounting frame and a vertical bar integrally formed with the cross bar; the blade is fixed to the bottom of the vertical rod and close to one side of the profiling wheel, the cutting edge side of the blade extends out of the cutter bar towards the profiling wheel, and the inclination angle of the cutting edge side is consistent with the inclination angle of the hole wall of the target inne