Cyclopedia of mechanical engineering; a general reference work. Editor-in-chief Howard Monroe Raymond. Assisted by a corps of mechanical engineers, technical experts, and designers of the highest professional standing (1908)
American School (Chicago, Ill.), Raymond, Howard Monroe · Chicago American Technical Society · leaf 398
5 FORGING For the second step the ball is flattened to about the thickness of thefinished eve and the hole punched under the steam hammer with anordinary punch, leaving the work as shown at C. The final shapingis done with the finishing die D. This die is so sluiped that when tli^two parts are… … Fig. 1G2. Fig. 163. circular, considerably rounded off at tlie eilges. This is shown moreclearly in Fig. 161 at A, where the dotted lines show the shape of theforging, the soUd lines the shape of the die. The object of the aboveis this: If the hole is semicircular in section, the stock, being…
Mechanical engineering
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