Self-alignment milling machine tool

The invention discloses a self-alignment milling machine tool which comprises a tool plate, bolt holes, a longitudinal alignment positioning surface and a transverse alignment positioning surface, and is characterized in that bolt holes are uniformly formed in the tool plate. The longitudinal alignment positioning surface is arranged at the wide side end of the tool plate; the transverse alignment positioning surface is arranged at the long side end of the tool plate; and one ends of the longitudinal alignment positioning surface and the transverse alignment positioning surface intersect. The self-alignment milling machine tool has the benefits as follows: the demand of alignment is met through the longitudinal alignment positioning surface and the transverse alignment positioning surface, the problem of inaccurate clamping caused by the fact that position of the bolt influences a clamp is solved through the bolt holes distributed widely, the labor intensity is reduced and the production efficiency is improved.