Modern Engineering Practice: A Reference Library...American School of Correspondence, 1906 - Engineering |
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adjustable allow amount annealed anvil arbor bath bending beveled blade blank bolt bored bushing caliper cast iron chips chisel chuck clamped clearance cold chisel cooled counterbore countersink cutting edge emery wheel end mill Engineering fastened finish fire flat flutes forging form shown forming tool gauge gear grinding grinding machine grooves hammer handle hardened head heat held holder hole inch diameter jaws larger lathe lathe centers lathe tools length located mandrel metal method milling cutter milling machine necessary operation ordinary piece placed planer prick punch proper pulley reamed reamer red hot removed right angles roughing round scale scarf screw shaft shank shape shown in Fig side slot spindle spiral square steam steam hammer straight surface swage taper teeth temper thickness thread tongs tool steel tooth turned Vernier welding width wrought iron
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Page 507 - REVIEW QUESTIONS. PRACTICAL TEST QUESTIONS. In the foregoing sections of this Cyclopedia numerous illustrative examples are worked out in detail in order to show the application of the various methods and principles. Accompanying these are examples for practice which will aid the reader in fixing the principles in mind. In the following pages are given a large number of test questions and problems which afford a valuable means of testing the reader's knowledge of the subjects treated.
Page 6 - DUGALD C. JACKSON, CE Head of Department of Electrical Engineering, Massachusetts Institute of Technology Member of American Institute of Electrical Engineers Author of "A Textbook on Electro-Magnetism and the Construction of Dynamos," "Alternating Currents and Alternating -Current Machinery" AE SEATON Author of "A Manual of Marine Engineering
Page 93 - Fig. 119, the angle of clearance will disappear, and the curve of the work will rub against the bottom of the tool. This will tend to force it out; it will heat the steel and produce a rough surface on the metal being turned. If, on the other hand, the tool is set too low, as in Fig.
Page 79 - The small face plate is used only for driving the work indirectly through suitable attachments. The large face plate shown Fig. 94. in Figs. 91 and 93 is used as a direct support for the work, the T-slots and other openings furnishing opportunities for bolting and clamping the work firmly to the face plate. The Steady Rest. When work is being done on the end of a shaft so that the tailstock cannot be used, it is necessary to support the shaft in some other way. It is done by means of the steady rest...
Page 92 - Fig. 120. to the removal of the chips. A tool should have sufficient strength at the point to do the work required. The tool should be set so that the cutting edge will be very nearly at a horizontal line, passing through the axis of the work. Many machinists set the cutting edge a little above the horizontal line. When so set the stress tends to force the tool down along the line of its greatest strength. The tool may, however, be set too high. If this is done, as in Fig. 119, the angle of clearance...
Page 478 - Fig. 122. When a tool is wanted with a blade forged in the center, it should be first started by using two fullers instead of one, then making two cuts, one on each side of the stock, in place of the single cut shown at A. Fig. 123. Boring Tool. The general shape of this tool is shown in Fig. 123. The length of the thin end depends upon the depth of the hole in which the tool is to be used and as a general rule should be made as short and thick as possible, in order to avoid springing. The tool may...
Page 128 - Fig. 163, the work is ordinarily light, and can be readily shifted so that the position of the holes can be brought beneath the drill. In heavy work, such as engine cylinders, however, this cannot be done. It is, therefore, necessary to be able to shift the drill and place it in a position to do the work.
Page 114 - The two opposite sides are parallel. The angle A at the end is used for grinding the tool. The sides of the latter are made to touch all along the edge. For setting the tool, the upper parallel side is held against the face of the work in a horizontal position. The tool is then set so that its sides touch along the edges of the notch B. The angle C is used to gauge the thread after it is cut. UNITED STATES STANDARD SCREW THREADS. The...
Page 12 - Soft hammers are used for striking heavy blows where the steel hammer would bruise the metal or mar the surface. They are made of rawhide, copper, or Babbitt metal, and vary in weight from six ounces to six pounds. They are subject to rapid wear, but are indispensable in setting up and taking down machinery. Those of metal are so constructed that the soft metal can be recast in the handle. Fig.