Machinery's Handbook, 31st Edition
1188 MICROFABRICATION PROCESSES AND PARAMETERS Table 9. Commercial Micromills (A stub flute length is about half of standard flute length ) Mill diameter Stub flute length Standard flute length
Overall length Shank diameter (mm) (inch) (mm) (inch)
(mm) (inch) (mm)
(inch)
(mm)
(inch)
0.025 0.0010 0.051 0.002 0.076 0.051 0.0020 0.076 0.003 0.152 0.076 0.0030 0.127 0.005 0.229 0.102 0.0040 0.152 0.006 0.305 0.127 0.0050 0.203 0.008 0.381 0.152 0.0060 0.254 0.010 0.457 0.178 0.0070 0.279 0.011 0.533 0.203 0.0080 0.305 0.012 0.610 0.229 0.0090 0.356 0.014 0.686 0.254 0.0100 0.381 0.015 0.762 0.279 0.0110 0.432 0.017 0.838 0.305 0.0120 0.457 0.018 0.914 0.330 0.0130 0.508 0.020 0.991 0.356 0.0140 0.533 0.021 1.067 0.381 0.0150 0.584 0.023 1.143 0.406 0.0160 0.610 0.024 1.219 0.432 0.0170 0.660 0.026 1.295 0.457 0.0180 0.686 0.027 1.372 0.483 0.0190 0.737 0.029 1.448 0.508 0.0200 0.762 0.030 1.524 0.533 0.0210 0.813 0.032 1.600 0.559 0.0220 0.838 0.033 1.676 0.584 0.0230 0.889 0.035 1.753 0.610 0.0240 0.914 0.036 1.829 0.635 0.0250 0.965 0.038 1.905 0.660 0.0260 0.991 0.039 1.981 0.686 0.0270 1.041 0.041 2.057 0.711 0.0280 1.067 0.042 2.134 0.737 0.0290 1.118 0.044 2.210 0.762 0.0300 1.143 0.045 2.286 0.792 0.0312 1.194 0.047 2.388 0.889 0.0350 1.346 0.053 2.667 1.016 0.0400 1.524 0.060 3.048 1.143 0.0450 1.727 0.068 3.429 1.194 0.0470 1.803 0.071 3.581 1.270 0.0500 1.905 0.075 3.810 1.397 0.0550 2.108 0.083 4.191 1.524 0.0600 2.286 0.090 4.572
0.003 38.1 1.5 3.175 0.125 0.006 38.1 1.5 3.175 0.125 0.009 38.1 1.5 3.175 0.125 0.012 38.1 1.5 3.175 0.125 0.015 38.1 1.5 3.175 0.125 0.018 38.1 1.5 3.175 0.125 0.021 38.1 1.5 3.175 0.125 0.024 38.1 1.5 3.175 0.125 0.027 38.1 1.5 3.175 0.125 0.030 38.1 1.5 3.175 0.125 0.033 38.1 1.5 3.175 0.125 0.036 38.1 1.5 3.175 0.125 0.039 38.1 1.5 3.175 0.125 0.042 38.1 1.5 3.175 0.125 0.045 38.1 1.5 3.175 0.125 0.048 38.1 1.5 3.175 0.125 0.051 38.1 1.5 3.175 0.125 0.054 38.1 1.5 3.175 0.125 0.057 38.1 1.5 3.175 0.125 0.060 38.1 1.5 3.175 0.125 0.063 38.1 1.5 3.175 0.125 0.066 38.1 1.5 3.175 0.125 0.069 38.1 1.5 3.175 0.125 0.072 38.1 1.5 3.175 0.125 0.075 38.1 1.5 3.175 0.125 0.078 38.1 1.5 3.175 0.125 0.081 38.1 1.5 3.175 0.125 0.084 38.1 1.5 3.175 0.125 0.087 38.1 1.5 3.175 0.125 0.090 38.1 1.5 3.175 0.125 0.094 38.1 1.5 3.175 0.125 0.105 38.1 1.5 3.175 0.125 0.120 38.1 1.5 3.175 0.125 0.135 38.1 1.5 3.175 0.125 0.141 38.1 1.5 3.175 0.125 0.150 38.1 1.5 3.175 0.125 0.165 38.1 1.5 3.175 0.125
0.180 38.1 1.5 3.175 0.125 Optional geometries include: Flute lengths: stub, standard, or optional extended length (10–80% longer); Number of flutes: 2, 3, or 4; Helix angles: 25°, 30°, 50°; End configuration: hemisphere, flat; Units: metric and US customary.
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