Shop Mathematics, Τόμος 1McGraw-Hill, 1931 |
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Σελίδα 98
... lead screw " having usually 2 , 4 , 6 , or 8 threads per inch . If the lathe has a lead screw with 6 threads per inch , 6 revolutions of the lead screw will move the carriage and tool 1 in . By referring to Fig . 22 it can easily be ...
... lead screw " having usually 2 , 4 , 6 , or 8 threads per inch . If the lathe has a lead screw with 6 threads per inch , 6 revolutions of the lead screw will move the carriage and tool 1 in . By referring to Fig . 22 it can easily be ...
Σελίδα 99
... lead screw " in the formula just given . Calling this ratio R , we can write the following formula to determine the desired change gears for a simple - geared lathe . Threads per inch to be cut Lead screw gear teeth Threads per inch on lead ...
... lead screw " in the formula just given . Calling this ratio R , we can write the following formula to determine the desired change gears for a simple - geared lathe . Threads per inch to be cut Lead screw gear teeth Threads per inch on lead ...
Σελίδα 100
... lead screw . There are to be 111⁄2 threads per inch on the pipe . What is the ratio of the speed to the spindle and lead screw ? 200. The lead screw on the table of a milling machine has a double thread with a pitch of in . How many ...
... lead screw . There are to be 111⁄2 threads per inch on the pipe . What is the ratio of the speed to the spindle and lead screw ? 200. The lead screw on the table of a milling machine has a double thread with a pitch of in . How many ...
Περιεχόμενα
ARTICLE | 1 |
Improper fractions | 7 |
Reduction to lower terms | 13 |
Πνευματικά δικαιώματα | |
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amount Answer Antilog belt block boiler bolt brake horsepower Calculate castings cent Centigrade centimeters ciphers circle circumference common fraction cutting speed cylinder decimal places decimal point denominator diameter dimes distance divide dividend division dollar efficiency emery wheel equal Example Explanation Fahrenheit feet figure foot force arm formula given heat hoist horsepower improper fraction inclined plane indicated jackscrew lathe lead screw length lever lifted line shaft load logarithmic scale logarithms machine mantissa measure mechanical advantage meter minute mixed number multiply number of teeth pipe piston pounds pressure Problem pull pulley pump quotient raised ratio reduced revolutions per minute rope scale shown in Fig slide rule square inch square root steam engine steel stress stroke subtract surface speed tank temperature threads per inch trial divisor unit volume weight arm whole number width