MANUFACTURING METHOD OF '?' TYPE DECORATIVE BOLT

PURPOSE: A manufacturing method of an L-shaped decorative bolt using a press-in forging method is provided to improve product productivity and reduce cost to make a mold by easily and successively implementing the whole manufacturing process. CONSTITUTION: A manufacturing method of an L-shaped decorative bolt using a press-in forging method comprises the following steps of: cutting a steel wire successively and repetitively supplied at fixed intervals into a bar-shaped wire using a cutter(S1); firstly forming step difference on a middle part of the bar-shaped wire by hitting the rear part of the bar-shaped wire which is mounted inside a forming groove of a first die using a first punch(S2); and secondly forming a L-shaped recess on the rear part of a stepped wire by hitting the rear upper end of the stepped wire mounted inside the forming groove(S3).