Machine Tools and Workshop Practice for Engineering Students and ApprenticesLongmans, Green, and Company, 1905 - 444 páginas |
Dentro del libro
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Página vii
... pressure are liable to introduce personal errors of variable amount . At the best , only a closer approxima- tion can be attained , since absolute accuracy in physical measure- ments is impossible . Thus , the ordinary Whitworth machine ...
... pressure are liable to introduce personal errors of variable amount . At the best , only a closer approxima- tion can be attained , since absolute accuracy in physical measure- ments is impossible . Thus , the ordinary Whitworth machine ...
Página 7
... pressure is obtained by the sense of touch , " and is frequently set to within one twenty- five thousandth of an inch of error . These calipers being jointed enables them to be used as shown , with the jaws set 8 in . apart , or , if it ...
... pressure is obtained by the sense of touch , " and is frequently set to within one twenty- five thousandth of an inch of error . These calipers being jointed enables them to be used as shown , with the jaws set 8 in . apart , or , if it ...
Página 8
... pressure , they will be a useful pair . If , however , they close with jerks , this proves that the joint is faulty , and , therefore , unreliable for particular work . In making inside calipers , the above process is adopted 8 MACHINE ...
... pressure , they will be a useful pair . If , however , they close with jerks , this proves that the joint is faulty , and , therefore , unreliable for particular work . In making inside calipers , the above process is adopted 8 MACHINE ...
Página 13
... pressure , which should be the same over both gauge and work . In well - ordered shops engaged on repetitionary work a limit gauge would be first used ( see Limit Gauges ) , so that by its use the amount of finishing is known . Cast ...
... pressure , which should be the same over both gauge and work . In well - ordered shops engaged on repetitionary work a limit gauge would be first used ( see Limit Gauges ) , so that by its use the amount of finishing is known . Cast ...
Página 14
... pressure , but for work of less dimensions - such , for instance , as the phosphor bronze bushes which are to act as bearings for spindles , or shafts in machine tools — the fits are tightly made by " drawing " the bushes home by means ...
... pressure , but for work of less dimensions - such , for instance , as the phosphor bronze bushes which are to act as bearings for spindles , or shafts in machine tools — the fits are tightly made by " drawing " the bushes home by means ...
Otras ediciones - Ver todas
Machine Tools and Workshop Practice for Engineering Students and Apprentices Alfred Parr Sin vista previa disponible - 2015 |
Machine Tools and Workshop Practice for Engineering Students and Apprentices ... Alfred Parr Sin vista previa disponible - 2017 |
Términos y frases comunes
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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