Mathematics and the Machinist's Job: The Practical Mathematics of the Machinist's TradeJ. Wiley & Sons, Incorporated, 1926 - 226 páginas |
Términos y frases comunes
13 threads 40 teeth altitude applied force apprentice belt change gears circle circular pitch common fraction computations cylinder decimal equivalents decimal point depth determined diagonal diametral pitch dimensions divide division Draw driver edge equal equation equilateral triangle example follows force acting formula fulcrum graduated hexagon idler Illustration index head index plate lathe law of sines lead screw length lever arm lifting force line shaft load machine machinist mathematics Measure method micrometer micrometer calipers multiplied nearest sixty-fourth NOTE number of teeth ordinary parallelogram practical preceding prism PROBLEMS proportion pulley rectangle right angles right triangle root diameters scale screw thread shown in Fig side simple sines speed ratio spindle spindle gear straight line stud subtraction surface speed tangent thds thimble thousandths threads per inch thumb nail tion tool tooth gears trapezoid turn U. S. Standard thread vernier vernier scale wheel whole numbers
Pasajes populares
Página 122 - Circular pitch is the distance from the center of one tooth to the center of the next, measured along the pitch line.
Página 90 - The pitch of a screw thread is the distance from the center of one thread to the center of the next thread, measured parallel to the axis.
Página 59 - In any proportion, the product of the means is equal to the product of the extremes.
Página 64 - Conversely, if the product of two quantities is equal to the product of two other quantities, the first two may be made the extremes, and the other two the means of a proportion.
Página 38 - A circle is a plane figure bounded by a curved line, every point of which is equally distant from a point within called the center.
Página 59 - AXIOMS. 1. Things that are equal to the same thing are equal to each other. 2. If equals are added to equals, the sums are equal. 3. If equals are subtracted from equals, the remainders are equal. 4. If equals are multiplied by equals, the products are equal. 5. If equals are divided by equals, the quotients are equal. 6. Equal powers of equal quantities are equal.
Página 27 - A ratio may be direct or inverse. The direct ratio of 20 to 4 is 20 : 4, while the inverse ratio of 20 to 4 is 4 : 20. The direct ratio of 4 to 20 is 4 : 20, and the inverse ratio is 20 : 4.
Página 113 - Takes the ratio of two sides of a right triangle (number) and returns the corresponding angle in radians. The ratio is the length of the side opposite the angle divided by the length of the side adjacent to the angle.
Página 141 - In finding a cologarithm when the characteristic of the logarithm is a negative number, it must be observed that the subtraction of a negative number is equivalent to the addition of an equal positive number.