Engineer's Manual for Designers, Draughtsmen, Toolmakers, Turners, Fitters, Mechanics, Erectors, and StudentsA. T. Collins Philosophical Library, 1965 - 334 σελίδες |
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Σελίδα 192
... thickness at points which do not lie on the pitch cylinder . The formulæ do not involve any mathematical approximation but are quite accurate . To determine the tooth thickness of involute spur or helical gears from micrometer ...
... thickness at points which do not lie on the pitch cylinder . The formulæ do not involve any mathematical approximation but are quite accurate . To determine the tooth thickness of involute spur or helical gears from micrometer ...
Σελίδα 194
... thickness on any desired cylinder . For the determination of tooth thickness of involute spur gears from micrometer measurement over rollers ( see Fig . 245 ) . Let d do NAB . W = - = = = diameter of circle on which tooth thickness is ...
... thickness on any desired cylinder . For the determination of tooth thickness of involute spur gears from micrometer measurement over rollers ( see Fig . 245 ) . Let d do NAB . W = - = = = diameter of circle on which tooth thickness is ...
Σελίδα 198
... thickness = 2R sin a , or pitch diameter x sin a , where a = angle subtended from the centre of the gear . This table gives the Chordal Thicknesses and Chordal Addenda of Spur and Bevel Gears of 1 Diametrical Pitch at pitch circle ...
... thickness = 2R sin a , or pitch diameter x sin a , where a = angle subtended from the centre of the gear . This table gives the Chordal Thicknesses and Chordal Addenda of Spur and Bevel Gears of 1 Diametrical Pitch at pitch circle ...
Περιεχόμενα
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ENGINEERING UNITS | 7 |
INTERNATIONAL ATOMIC WEIGHTS | 14 |
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angle Avoirdupois belt Bolt calculations centimetres centre change gears Chordal circle continued fraction cosec Cross-section cubic metre cursor cylinder decimetre degrees Depth Diam dimensions divisions Drill driver error factors feet FLANGES foot formula fraction FRUSTUM FUNCTIONS OF NUMBERS gallon gauge given Groove Hardness Number heat holes horse-power indentor Kilogrammes Kilos Lead Screw length load maximum stress Maximum Tolerance Minimum measured Metric millimetres Minimum Maximum Tolerance Nominal Nomogram number of teeth Number of Threads pipe pitch diameter plating Pounds pressure pulley radians radius ratio REVOLUTIONS PER MINUTE rope SCREW THREADS shaft sine sine bar slide rule spindle Square Cube Square square inch square metre square root steam Steel surface Table Taper temperature threads per inch Tolerance Minimum Maximum TRIANGLE TRIGONOMETRICAL V-belts vernier Weight wheels Whitworth width wire worm yards