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Title: |
1911 Article- Alfred Herbert, Ltd., Stud Making Lathe |
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Source: |
Machine Tools Commonly Employed In Modern Engineering Workshop, V1, 1911, pg. 91 |
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Insert Date: |
5/1/2022 4:41:54 PM |
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A special form of capstan lathe for stud-making, and also for producing moderate quantities of such parts as screwed ferrules is illustrated in fig. 122. This machine, which is manufactured by Messrs. Alfred Herbert, Ltd., of Coventry, is designed to operate on bright drawn or black reeled steel bars, which can be held in the automatic chuck and do not require to be turned. In the example shown the head is of the friction- geared type; but ungeared automatic head, similar that of the shaving lathe already described, may be fitted if desired. The stud is screwed by a Coventry-type self-opening die head, which opens automatically when the desired length of thread has been cut. Suitable tools, in the two cross-slide tool posts, then finish and cut off the piece, and when sufficient studs have been screwed and finished at one end they are reversed, gripped in the automatic chuck, screwed, and finished at the other end. An ejector automatically ejects the stud after the completion of the final operation. Suitable slow and quick speeds, for screwing and cutting operations respectively, are furnished by a two-speed countershaft. The machine is specially designed for rapid production when run by a cheap class of operator. |
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1911 Alfred Herbert, Ltd., Stud Making Lathe
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