JUNCTION FORMING METHOD FOR IMPELLER BLADE OF AIR BLOWER, AND FORMING METHOD FOR IMPELLER BLADE OF AIR BLOWER AND IMPELLER OF AIR BLOWER

摘要

PROBLEM TO BE SOLVED: To restrain a plurality of shells consisting of each hollow blade in structure from being slipped in position when the shells are joined. ;SOLUTION: In this junction forming method joining a blade main body 21 and a lid 22, which consist of a hollow blade in structure so as to form them into the blade 3, after the following three process have been completed, the blade main body 21 is combined with the lid 22. Namely, in a first process, a plurality of cut-out are provided for the corner parts of the lid 22, in the second process, a plurality of guides 31 through 34 are set in the blade main body 21 at places corresponding to the positions of the cut-outs for the lid 22, and in a third process, the lid 22 is brought into contact with the blade main body 21 while each cut-out is being laid along each guide 31 through 34.;COPYRIGHT: (C)1999,JPO