314 Каталог INGERSOLL 2011 Режущий инструмент и инструментальная оснастка Стр.316

Каталог INGERSOLL 2011 Инструмент и оснастка Стр. 316 0314 Lab2u

BALL NOSE CHIP THINNING This chart provides information on effective cutting diameter ACTFs and cusp height for a ball nose cutter at a given DOC or step over. Effective Diameter and Axial Chip Thinning Factor. Axial DOC will affect the effective cutting diameter and consequently the ACTF. Note that as the axial DOC increases the effective diameter and ACTF also increase. A lower DOC results in a smaller effective diameter and therefore a lower ACTF; i.e. the spindle RPM and feed rate need to be increased to maintain a proper surface speed and chip load. Cusp Height. Step over or radial DOC affects the cusp height. Cusp height is the theoretical surface finish produced by successive tool paths made by a radius tool. Larger step over or a smaller cutter diameter produces a larger cusp height; i.e. a rougher finish. For the best surface finish use the largest diameter tool possible at the lowest practical radial DOC. CHART A - EFFECTIVE BALL NOSE CUTTING DIAMETER AXIAL CHIP THINNING FACTORS AND CUSP HEIGHT (.375-1.000 DIA.) DOC Cutter Diameter Step 0.375 0.500 0.625 0.750 1.000 Over Dia. ACTF Cusp Dia. ACTF Cusp Dia. ACTF Cusp Dia. ACTF Cusp Dia. ACTF Cusp 0.004 0.08 .2 0. 0.0000107 0.09 0.18 0.0000080 0.10 0.16 0.0000064 0.11 0.15 0.0000053 0.13 0.13 0.0000040 0.008 0.11 0.29 0.0000427 0.13 0.25 0.0000320 0.14 0.22 0.0000256 0.15 0.21 0.0000213 0.18 0.18 0.0000160 0.016 0.15 0.40 0.0001707 0.18 0.35 0.0001280 0.20 0.32 0.0001024 0.22 0.29 0.0000853 0.25 0.25 0.0000640 0.031 0.21 0.55 0.0006522 0.24 0.48 0.0004888 0.27 0.44 0.0003909 0.30 0.40 0.0003257 0.35 0.35 0.0002442 0.063 0.28 0.75 0.0026225 0.33 0.66 0.0019608 0.38 0.60 0.0015664 0.41 0.55 0.0013044 0.48 0.48 0.0009775 0.094 0.32 0.87 0.0059539 0.39 0.78 0.0044338 0.45 0.71 0.0035356 0.50 0.66 0.0029412 0.58 0.58 0.0022021 0.125 0.35 0.94 0.0107233 0.43 0.87 0.0079385 0.50 0.80 0.0063138 0.56 0.75 0.0052450 0.66 0.66 0.0039216 0.156 0.35 0.99 0.0170514 0.46 0.93 0.0125206 0.54 0.87 0.0099232 0.61 0.81 0.0082283 0.73 0.73 0.0061412 0.188 0.38 1.00 0.0251202 0.48 0.97 0.0182438 0.57 0.92 0.0143940 0.65 0.87 0.0119078 0.78 0.78 0.0088677 0.219 0.50 0.99 0.0251954 0.60 0.95 0.0197657 0.68 0.91 0.0163050 0.83 0.83 0.0121095 0.250 0.61 0.98 0.0260890 0.71 0.94 0.0214466 0.87 0.87 0.0158771 0.281 0.62 0.99 0.0334286 0.73 0.97 0.0273657 0.90 0.90 0.0201827 0.313 0.63 1.00 0.0418671 0.74 0.99 0.0341027 0.93 0.93 0.0250411 0.344 0.75 1.00 0.0417074 0.95 0.95 0.0304694 0.375 0.75 1.00 0.0502405 0.97 0.97 0.0364876 0.406 0.98 0.98 0.0431190 0.438 0.99 0.99 0.0503908 0.469 1.00 1.00 0.0583346 0.500 1.00 1.00 0.0669873 316