Hale, Joseph W. L. (Joseph Woodwell Ledwidge), 1886- · New York [etc.] McGraw-Hill book company · leaf 80
ct of thenumber of teeth in each of the driving gears. Repre-senting the number of teeth of the gears by the letters onthe gears we have, if ^n^^ is the threads cut per in. and^*r the number of threads per in. of the lead screw. dX aXlX en = pX sXf GEARS, LATHE GEARING 65 For example, suppose the… … ^^^Lead Screw Fig. 85. n dX aXlX e 5X28X72X24 pXsXf 28 X 24 X 36 or 10. Working the other way round, if we wish to find the gearsto use to cut a given thread we proceed as follows: 5 66 MECHANICS AND ALLIED SUBJECTS If d = 5 and the threads cut per in. are to be 14, we have 5XaXlX e „ . . 14 = ——^^…
Mechanics, Applied
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