Shop Arithmetic for the Machinist
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In our eReader you can find the full English version of the book. Read Shop Arithmetic for the Machinist Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Shop Arithmetic for the Machinist
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Also assume that the numbers of teeth in the available change gears of this lathe are 24, 28, 32, 36, 40, etc. , increasing by 4 up to 100. By substituting the figures given, in the formula above, and carrying out the calculation, we have: 6 6X4 24 10 10 X 4 40 By multiplying both numerator and denominator by 4 we obtain two available gears with 24 and 40 teeth, respectively. The 24-tooth gear goes on the spindle stud, and the 40-tooth gear on the lead-screw. It will be seen that if we had mult...iplied 6 and 10 by 5, we would have obtained 30 and 50 teeth, which gears are not available in our set of gears with this lathe. Until getting accustomed to figuring of this kind, one can find, by trial only, the correct number by which to multiply the numerator and denominator. The trials must be kept up until both gears have such a number of teeth that they are to be found in the set of change gears accompanying the lathe.
Assume that it is required to cut 11% threads per inch in the same lathe having the same set of change gears.
What to read after Shop Arithmetic for the Machinist?
You can find similar books in the "Read Also" column, or choose other free books by Erik Oberg to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Also assume that the numbers of teeth in the available change gears of this lathe are 24, 28, 32, 36, 40, etc. , increasing by 4 up to 100. By substituting the figures given, in the formula above, and carrying out the calculation, we have: 6 6X4 24 10 10 X 4 40 By multiplying both numerator and denominator by 4 we obtain two available gears with 24 and 40 teeth, respectively. The 24-tooth gear goes on the spindle stud, and the 40-tooth gear on the lead-screw. It will be seen that if we had mult...iplied 6 and 10 by 5, we would have obtained 30 and 50 teeth, which gears are not available in our set of gears with this lathe. Until getting accustomed to figuring of this kind, one can find, by trial only, the correct number by which to multiply the numerator and denominator. The trials must be kept up until both gears have such a number of teeth that they are to be found in the set of change gears accompanying the lathe.
Assume that it is required to cut 11% threads per inch in the same lathe having the same set of change gears.
What to read after Shop Arithmetic for the Machinist?
You can find similar books in the "Read Also" column, or choose other free books by Erik Oberg to read onlineMoreLess
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