Elements of Machine Construction and Drawing; Or, Machine Drawing

Elements of Machine Construction and Drawing; Or, Machine Drawing

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1872 edition. Excerpt: ... both of the given ones; then O is the common vertex of the bevel wheels, m and n / and V is the common vertex of the bevel wheels, p and q. As the figure is drawn, AB and OV are in the plane of the paper, and CD is out of it. The parts, n andp, of the intermediate double frustum need not be in one piece as shown, but may be separate, and anywhere on OV, to suit the positions of m and q on their axes. Example XXXYI. Projections of Bevel Gearing. PL XXII. shows a very beautiful example of bevel gear. By lettering like points with the same letters, capital or small, on this and on PL XX., but little is left to be explained. As the flanks are radial, the generating or describing circles in the development are drawn with radii, AT and BT, equal to half of the elements, V'5, and v"b = V"T, of the cones containing the outer ends of the teeth and having the pitch circles, mb and M5, for their bases. The pitch cones (100) of the two wheels have a common vertex V--V"', and element of contact Yb--Y,"mf Designating the wheels by their pitch circles, or centres, the wheel mb--m, fan is drawn by first making its circular projection O'. Likewise, Mb is made fromhe circular projection, Y/fr--M'd', of the same wheel. The student may assume a scale, and from that determine the measurements. Wheels of given radii act together better, the more teeth they have; hence, as the arc of action of bevel teeth, at their outer extremities, for example,1 is in the plane Ynbv, r (perpendicular to the paper) and virtually with radii Y/;b and v"b, the action of the bevel wheels, with nominal radii ab and db, is equivalent to that of spur wheels with radii Y/;b and v"b. c--Warped Communicators. Example XXXVII. The complete Projections of a Screw and...show more

Product details

  • Paperback | 110 pages
  • 189 x 246 x 6mm | 213g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236495802
  • 9781236495808