Machinists' and draftsmen's handbook, containing tables, rules and formulas, with numerous examples explaining the principles of mathematics and mechanics as applied to the mechanical trades; intended as a reference book for all interested in mechanical work (1910)
Lobben, Peder, 1858- · New York, D. Van Nostrand company · leaf 427
2 X 0.5525 = 3.947 inches. Thus the only difference in size between the hob and theworm is in the outside diameter and in the depth of the cut.Both may be finished by the same tool, as the diameter at thebottom of the thread and the thickness of the teeth at the pitchline should be the same for… … The pitch line is constructed and calculated the same asthe circumference of an ellipse. (See page 189.) The gear isconstructed involute the same as for spur gears. If the differ-ence between the minor and the major diameters is large it maybe necessary to construct the teeth of different shapes at…
Mechanical engineering
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