SECTOR MOLD AND MANUFACTURING METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a sector mold capable of attaching a pattern block to a sector simply and with good location accuracy, and also improving its strength.SOLUTION: There is provided a sector mold constituted by attaching a pattern block 20 to a sector 10 and having the sector 10 having an embedded groove 12 and a hole 14 for a positioning pin, and a pattern block 20 having a projection portion for the embedded groove 22a and a positioning pin 24 corresponding to the embedded groove 12 and the hole 14 for the positioning pin respectively on a rear barrel face 20a.