Forging operations .. by Unknown

Author:Unknown
Language: eng
Format: epub, pdf
Tags: Forging, Dies (Metal-working)
Publisher: Scranton, Pa., International textbook company
Published: 1916-03-25T05:00:00+00:00

§54

FORGING DIES

37

suit the delicate cuts made with small cutters and the low speeds required for the large heavy cuts, two spindles / and g are

Fig. 49

provided, / being the larger and used for the heavy cutting. Either spindle may be used, as desired. A quick hand return

FORGING DIES

§54

for the table is obtained by using the crank n, which fits the square on the end of the screw, and adjusting the lock bolt o. The feed is driven through the pulleys p, q, and r and the belts 5 and t. The pulley / is the main driving pulley, and is driven, in turn, by a countershaft connection or an electric motor, as found most convenient. The table stops u may be set as desired. As they pass the lever v, they automatically throw oflf the feed. The cutters used on the machine may have either tapered or straight shanks. Those having tapered shanks may fit directly in the spindles, or they may fit a socket that fits the spindle holes; and those having straight shanks are used in a chuck made for the purpose as, for example, the one shown

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