Stamping device for precisely positioning plate half-moon

The invention discloses a stamping device for precisely positioning a plate half-moon, and belongs to the technical field of blanking devices. The stamping device comprises a gasket, a driving block,a guide sliding block, a base, a male die, a fixed seat, a mounting block, a guide plate, a sliding block, a rotation stopping key, a rotating shaft pressing block, a sleeve, a rotating shaft mountingseat, a rotating shaft and a positioning sliding block. The guide plate is adopted for guiding, the gap between the guide plate and the guide sliding face is adjusted by additionally arranging the gasket on the back face of the guide plate, the position precision of the mounting block is improved, and therefore the half-moon position precision is improved. In this way, the influence of machiningerrors on the precision of the half-moon position can be compensated for, more accurate installation is achieved, the error value of the half-moon position degree is controlled within plus or minus 0.03 millimeter, the precisio