Shop Mathematics, Τόμος 1McGraw-Hill, 1931 |
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Σελίδα 98
... threads per inch , 6 revolutions of the lead screw will move the carriage and tool 1 in . By referring to Fig . 22 ... threads per inch , etc. The ratio of the spindle speed to the speed of the lead screw will , therefore , be Speed of ...
... threads per inch , 6 revolutions of the lead screw will move the carriage and tool 1 in . By referring to Fig . 22 ... threads per inch , etc. The ratio of the spindle speed to the speed of the lead screw will , therefore , be Speed of ...
Σελίδα 99
... Threads per inch to be cut Lead screw gear teeth Threads per inch on lead screw Stud gear teeth RX = To cut 12 threads per inch with a lathe that has a 6 - pitch lead screw and a fixed ratio , R , of 1 to 1 , requires 1 12 12 60 teeth ...
... Threads per inch to be cut Lead screw gear teeth Threads per inch on lead screw Stud gear teeth RX = To cut 12 threads per inch with a lathe that has a 6 - pitch lead screw and a fixed ratio , R , of 1 to 1 , requires 1 12 12 60 teeth ...
Σελίδα 227
... thread . By then solving for D we would get the diameter at the root of the threads . But the Bolt Tables afford an easier method than this . In the following table .4193 is given as the area of a 3 - in . bolt at the root of the thread ...
... thread . By then solving for D we would get the diameter at the root of the threads . But the Bolt Tables afford an easier method than this . In the following table .4193 is given as the area of a 3 - in . bolt at the root of the thread ...
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