## Machine-shop Mathematics"This work has been prepared to meet the needs of students who expect to become machinists, either in the special line of automobile construction or in the more general lines of the machine shop. It is therefore strictly limited in scope to the needs of those who are entering upon this kind of work, and it treats only of such topics as experience has shown are demanded by the practical machinist who is determined to advance in his vocation."--Preface. |

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### Other editions - View all

Machine-Shop Mathematics David Eugene Smith,George Wentworth,Herbert Druery Harper No preview available - 2016 |

Machine-Shop Mathematics David Eugene Smith,George Wentworth,Herbert Druery Harper No preview available - 2015 |

### Common terms and phrases

Acme addendum axis bevel gears blank blueprint caliper called cast cast-iron center distance change gears required circle circular pitch circumference compound cutter cutting speed difference direction dividing head divisions double drill driving example Exercises face feed feed screw figure Find the angle Find the change find the indexing Find the number finishing flat formula fractions give given graduated groove Hence high-speed holes Illustrative index crank index plate iron lathe lead screw length measured micrometer milling machine moves number of teeth number of threads obtain offset pair pinion pitch diameter placed planer problems pulley ratio reading respectively root diameter roughing screw thread shaft sharp V-thread shown shows side spindle spiral gears spur gear steel stroke tailstock taper thickness thimble threads per inch tool tooth turned usually vernier whole depth width wires worm wheel

### Popular passages

Page 137 - LIQUID MEASURE 4 gills (gi.) = 1 pint (pt.) 2 pints — 1 quart (qt...

Page 137 - CUBIC MEASURE 1728 cubic inches (cu. in.) = 1 cubic foot (cu. ft.) 27 cubic feet = 1 cubic yard (cu. yd.) 128 cubic feet = 1 cord (cd...

Page 137 - SQUARE MEASURE 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 30| square yards = 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) 640 acres = 1 square mile (sq.

Page 104 - The circular pitch is the distance from the center of one tooth to the center of the next tooth, measured along the pitch circle.

Page 137 - Measure square measure 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq.

Page 35 - PITCH AND LEAD OF SCREW THREAD. The terms " pitch " and " lead " of screw threads are often confused. The pitch of a screw thread is the distance from the center of one thread to the center of the next thread, whether the screw has a single, double, triple, or quadruple thread.

Page 9 - ... nickel. Tungsten and chromium in particular give the steel the property of retaining its cutting ability under very high speeds or heat. Cutting Speed. — Cutting speed is the velocity with which a cutting tool engages the work and is always given in feet per minute (fpm). The term feet per minute has somewhat different meanings for different machines. In turning work on a lathe it means the number of linear feet, measured on the surface of the work, which passes the edge of a cutting tool in...

Page 70 - In the same manner, an inspection of the valve gear must be made to determine in which direction to turn the eccentric when adjusting the exhaust valves at the point of closure or compression.

Page 71 - If the crank is given ^ of a turn 59 times, it makes 39i turns, or | of a turn less than the 40 turns required for one revolution of the work. Hence the index plate must move in the same direction as the crank | of a revolution while the work revolves once.