Machine Tools and Workshop Practice for Engineering Students and ApprenticesLongmans, Green, and Company, 1905 - 444 страници |
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Страница 3
... fixed standard " and compare the bore of the pulley with it . That is , a cylindrical gauge of 21 in . or a rod 2 in . long must be used , and the diameter of the hole compared with this length . From such examples it will be seen that ...
... fixed standard " and compare the bore of the pulley with it . That is , a cylindrical gauge of 21 in . or a rod 2 in . long must be used , and the diameter of the hole compared with this length . From such examples it will be seen that ...
Страница 14
... fixed under the tool - clamps . The rest is brought close up to the revolving casting , and to prevent the tool from chattering a thin strip of leather is placed beneath it ; this considerably reduces the tendency to vibrate . When ...
... fixed under the tool - clamps . The rest is brought close up to the revolving casting , and to prevent the tool from chattering a thin strip of leather is placed beneath it ; this considerably reduces the tendency to vibrate . When ...
Страница 15
... fixed point held against a revolving piece of work . Supposing the work has been bored previously , and has to be re - set . Such pieces for boring or drilling are first mounted in the lathe ; it is the practice to " set " the part to ...
... fixed point held against a revolving piece of work . Supposing the work has been bored previously , and has to be re - set . Such pieces for boring or drilling are first mounted in the lathe ; it is the practice to " set " the part to ...
Страница 16
... fixed nut . An opening to receive the work to be measured is afforded by the backward movement of the screw , and the size of the opening is indicated by the graduations . The pitch of the screw. FIG . 19. - Richard's measuring machine ...
... fixed nut . An opening to receive the work to be measured is afforded by the backward movement of the screw , and the size of the opening is indicated by the graduations . The pitch of the screw. FIG . 19. - Richard's measuring machine ...
Страница 18
... fixed point on the barrel , it shows the caliper has been opened one - thousandth of an inch . Hence , when the thimble is turned so that a line on the thimble coincides with the second line ( end of the first division ) of the vernier ...
... fixed point on the barrel , it shows the caliper has been opened one - thousandth of an inch . Hence , when the thimble is turned so that a line on the thimble coincides with the second line ( end of the first division ) of the vernier ...
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addendum circle adjustable angle plate B.Sc bearings bevel bolts boring calipers carried cast iron centre change wheels chisel chuck cone crank Crown 8vo cutting edges cutting tools cylinder Diagrams diameter diametral pitch disc drill driving ELEMENTARY emery wheel engine feed finished fitted fixed forged gauge gear grinding grinding machine grip groove ground guide screw hammer hardened headstock heat holes hydraulic Illustrations jaws lathe length lever machine tools mandrel measured metal mild steel Millimetres milling cutter milling machine motion number of teeth obtained operated parallel piece pinion piston pitch circle placed planing machine position practice pressure pulley reamer rest revolutions per minute revolving rivet rotated saddle screw threads secured shaft shown in Fig side slide slot speed spindle square standard surface taper threads per inch tooth turned turret vertical worm wrought iron
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