. Railway mechanical engineer . Fig. A—Cup and Blocks for Fn ng Link Trur Fig. 3 slightly tapered on one end. It is then rclicated to a weldini;heat and placed in the die between the top and bottom blocks;these are then driven together by steam hammer until the topblock is flush with the top of the die. After the cup die is raisedup, by using blocks underneath it and by using a plunger to driveout the work and forms, there is no further labor to be doneother than to trim the flash. The die and block are shown in Fig2. Wc have just recently completed 400 of these pieces at a verylow cost, altho
. Railway mechanical engineer . Fig. A—Cup and Blocks for Fn ng Link Trur Fig. 3 slightly tapered on one end. It is then rclicated to a weldini;heat and placed in the die between the top and bottom blocks;these are then driven together by steam hammer until the topblock is flush with the top of the die. After the cup die is raisedup, by using blocks underneath it and by using a plunger to driveout the work and forms, there is no further labor to be doneother than to trim the flash. The die and block are shown in Fig2. Wc have just recently completed 400 of these pieces at a verylow cost, although the cost is somewhat higher than the samework done in drop-forge dies. There is a very large saving in. Fig. 5—Turnbuckle Formed In Dies Shown In Fig. 6labor cost as compared to forging and finishing at the making this piece we start with 34 lb. of material; after theflash is removed the finished piece weighs 32% lb. It is neces-sary in forming work in cup dies to have just about the rightweight, otherwise the strain on the tools is very severe, due tosurplus stock finding its way between the cup and plunger. Thecup block is made of billet steel; the top and bottom forms aremade of tool steel. Fig. 3 shows a link trunnion and Fig. 4 the cup and blocks forforming it. We first forge this piece from hammered iron, andliend the stem at right angles to the body, which is forged will assure that the fibres of the metal will flow in thedirection intended, assuring a solid stem. The iron is thenre-heated to a welding heat, then placed in the die between topand bottom blocks and the top block driven down flush withthe top of the die under the steam hammer. After the flash
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
