Mold for processing of hinge pin of oil filler door and hinge pin processing method

The invention discloses a processing method for a hinge pin of an oil filler door. According to the processing method, a processing mold is adopted for processing. The processing method comprises thefollowing steps: the conical dimension of the hinge pin is determined; the length dimension of the hinge pin is determined; the dimension from a positioning block to a mold block is determined according to the range of the conical dimension and length tolerance range tolerance of the hinge pin; and the to-be-processed hinge pin is mounted between the mold block and a rotating shaft for being fixedand positioned, a cylindrical stamping component is placed on the mold block, the accurate location positioning of the cylindrical stamping component is guaranteed, the cylindrical stamping componentis driven through a stamping device to stamp the to-be-processed hinge pin, the hinge pin is driven by rotating the rotating shaft to rotate by 120 degrees for being stamped again after the primary stamping operation is finish