 The above assumes that the lathe is geared 1:1; that is, the lathe screw constant is equal to the number of threads per inch on the lead screw. If the lathe is not so geared, the lathe screw constant should be used in place of the threads per inch on...  The Starrett Book for Machinists' Apprentices - Page 167by Howard Parker Fairfield, Carl Stephen Dow - 1917 - 184 pagesFull view - About this book
 | Bernard Edward Jones - Ordnance - 1917 - 168 pages
...will have a pitch of J in. ; in other words, the number of threads cut in the work will be exactly equal to the number of threads per inch on the lead screw, in this case two. If the lathe spindle and the work revolve four times as fast as the leading screw,... | |
 | Franklin D. Jones - Gearing - 1924 - 360 pages
...per inch cut by the lathe when the gears on the spindle stud and lead-screw are of equal size, and it is equal to the number of threads per inch on the lead screw, assuming that the headstock spindle and stud are geared together in the ratio of 1 to 1. To determine... | |
 | Robert Scharff - Mathematics - 1989 - 468 pages
...is placed on the spindle stud? threads to be cut 40 6-- " 24 40 threads to be cut = — X 6 = 10 24 The above assumes that the lathe is geared 1:1; that...usually one of finding out what gears to use. Suppose 7 threads are to be cut, and there are 5 threads per inch on the lead screw. What gears are to be used?... | |
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