196 Каталог KYOCERA 2016 Твердосплавный вращающийся режущий инструмент ENG Стр.194

Catalog KYOCERA 2016 Solid carbide cutting tools Стр. 194 0196 ENG Lab2u

TAPS ENGINEERING DATA INCH FORMULAS FORMULA FOR TAP / DRILL SIZES (INCH) METHOD 1 (Dbl. Thread Depth X % of Full Thread) = Drilled Hole Size EXAMPLE: To find the hole size for obtaining 75% of thread in a 1/4-20 tapped hole, follow first column down to 20 threads, then across to 75% of thread. This figure (0.0485), when subtracted from the 0.250 diameter, is 0.2015, which is the required diameter of hole. See equation: 0.2500 - 0.0485 = 0.2015 To figure whether or not pitch is too coarse for diameter: (Double thread depth) X 3 = x x = the smallest diameter possible for that T.P.I. Threads per Inch Double Thread Depth 50% Thread 55% Thread 60% Thread 65% Thread 70% Thread 75% Thread 80% Thread 85% Thread 6 0.21651 0.1083 0.1192 0.1300 0.1408 0.1517 0.1625 0.1733 0.1842 7 0.18558 0.0929 0.1021 0.1114 0.1207 0.1300 0.1393 0.1486 0.1579 8 0.16238 0.0813 0.0894 0.0975 0.1056 0.1138 0.1219 0.1300 0.1381 9 0.14434 0.0722 0.0794 0.0866 0.0939 0.1011 0.1083 0.1156 0.1228 10 0.12990 0.0649 0.0714 0.0779 0.0844 0.0909 0.0974 0.1039 0.1105 11 0.11809 0.0590 0.0649 0.0708 0.0767 0.0826 0.0885 0.0944 0.1005 12 0.10825 0.0541 0.0595 0.0649 0.0702 0.0755 0.0808 0.0861 0.0921 13 0.09992 0.0499 0.0549 0.0599 0.0649 0.0699 0.0749 0.0799 0.0850 14 0.09278 0.0464 0.0510 0.0556 0.0602 0.0648 0.0694 0.0740 0.0789 16 0.08119 0.0406 0.0446 0.0486 0.0526 0.0566 0.0606 0.0646 0.0691 18 0.07217 0.0361 0.0396 0.0431 0.0466 0.0501 0.0536 0.0571 0.0614 20 0.06495 0.0325 0.0357 0.0389 0.0421 0.0453 0.0485 0.0517 0.0553 24 0.05412 0.0270 0.0298 0.0326 0.0354 0.0382 0.0410 0.0438 0.0460 27 0.04811 0.0240 0.0264 0.0288 0.0312 0.0336 0.0360 0.0384 0.0409 28 0.04639 0.0232 0.0254 0.0276 0.0298 0.0324 0.0347 0.0370 0.0395 30 0.04330 0.0216 0.0238 0.0260 0.0282 0.0304 0.0326 0.0348 0.0368 32 0.04059 0.0203 0.0223 0.0243 0.0263 0.0283 0.0303 0.0323 0.0345 36 0.03608 0.0180 0.0198 0.0216 0.0234 0.0252 0.0270 0.0288 0.0307 40 0.03247 0.0162 0.0178 0.0194 0.0210 0.0226 0.0242 0.0258 0.0276 44 0.02952 0.0147 0.0162 0.0177 0.0192 0.0207 0.0222 0.0237 0.0251 48 0.02706 0.0135 0.0148 0.0161 0.0174 0.0187 0.0200 0.0213 0.0230 56 0.02319 0.0116 0.0127 0.0138 0.0149 0.0160 0.0171 0.0182 0.0197 64 0.02029 0.0101 0.0111 0.0121 0.0131 0.0141 0.0151 0.0161 0.0173 72 0.01804 0.0090 0.0099 0.0107 0.0115 0.0123 0.0131 0.0139 0.0153 80 0.01623 0.0081 0.0089 0.0097 0.0105 0.0113 0.0121 0.0129 0.0138 Figures in table show amount to subtract from O.D. of screw to obtain specific percentages of thread. Select nearest size commercial stock drill. 194 Kyocera