COLD FORGING METHOD FOR TIE ROD END HOUSING BY TRANSFER PRESS

摘要

PURPOSE:To form a blank material efficiently and successively without inverting it by bending its shaft part to meet with the blank material facing downward in a final forming stage. CONSTITUTION:At one end of the circularly sectioned bar blank material which is nearly as thick as the diameter of the shaft part 3d of the die rod end housing 1d, a ball stud 1b where a spherical head part 2b is to be upset. Then, the blank material 1b is supported horizontally by a supporting means 10 in a lower die 13 which has a support projection 16 as the support of beinding of the shaft part 3b while facing the reverse surface of the shaft part near the spherical head part 2b of the blank material 1b, and an upper die having a projection 12 and the lower die 13 are used to flatten the spherical head part 2b and also to bend the shaft part. Then, the bent blank material is moved to a succeeding stage die without making it inverted and a punch 33 is inserted into the spherical head part flattened by the upper and lower dies 31 and 32 to form a socket part 6d.