Manner null of attaching to the die of core and

摘要

PURPOSE:To mechanically assemble a core and a sleeve by setting the core and sleeve to a jig, matching upper die, etc., sucking the sleeve to a bore die and assembling lower die, right and left dies in the above die group after separating the jig from the die. CONSTITUTION:Two cores C1, C1 for manufacturing water cooling chamber are set on a first supporting part 1a in the jig 1 and successively, plural sleeves S are penetrated into the cores C1 and also set on a second supporting part 1b in the jig 1 and a core C2 for manufacturing an oil hole is set on a third supporting part 1c in the jig 1. The upper die 2 is positioned to above the jig 1 and the upper side of the core C1 is surrounded and the bore die 4 is inserted into the sleeve S on the jig 1, and by matching the front and rear dies to front and rear of the upper die 2, the cores C1, C1, C2 are held from both front and rear sides. The jig 1 is separated from the front and rear dies, the upper die 2, etc., holding the cores C1, C2, and the upper die 2, and the bore die 4, etc., are matched to a lower die 6, and after that, by matching the desirable cylinder block is demarcated.