er-formed (Fig. 17), is rather unusual in size, being 118in. between housings and having a die space of 72 in.and a stroke of 36 in. The I-beam at this stage has been formed up intocircular shape. Two of the operations which followare machine operations—simple boring and drilling jobs,which offer… … 1—rAp I-benm after the first blanking operation. 2—The first blankivg nperntion beiny performed. .?—Uies iixed in th first blanking operation. 4—Indexing device for spacing holes during the first blankingoperation :>—Coining the edges of the holes. 6—The coining dies used in Fig. 5. 7—The I-beam…
Automobiles · Aeronautics
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