Fagor 8055i FL EN - Page 129

Operating manual
CNC 8055
CNC 8055i
WORKING WITH OPERATIONS OR CYCLES
3.
·TC· OPTION
SOFT: V02.2X
·129·
Threading cycle
Normal pitch unified American thread: UNC (NC,USS)
The threads must be defined in millimeters or inches. For example, to define an American thread
with a 1/4 pitch, enter 6.3500 mm or 0.2500 inches.
The CNC calculates the pitch and the depth with the formulae:
Pitch in mm = 25.4 / number of edges
Pitch in inches = 1 / number of edges
Depth in internal threads = 0.5413 x Pitch
Depth in external threads = 0.6134 x Pitch
Thread Step Depth (mm)
(mm) (inches) Edges (mm) (inches) Internal External
0.0730 1.8542 0.0730 64 0.3969 0.0156 0.2148 0.2435
0.0860 2.1844 0.0860 56 0.4536 0.0179 0.2455 0.2782
0.0990 2.5146 0.0990 48 0.5292 0.0208 0.2865 0.3246
0.1120 2.8448 0.1120 40 0.6350 0.0250 0.3437 0.3895
0.1250 3.1750 0.1250 40 0.6350 0.0250 0.3437 0.3895
0.1380 3.5052 0.1380 32 0.7938 0.0313 0.4297 0.4869
0.1640 4.1656 0.1640 32 0.7938 0.0313 0.4297 0.4869
0.1900 4.8260 0.1900 24 1.0583 0.0417 0.5729 0.6492
0.2160 5.4864 0.2160 24 1.0583 0.0417 0.5729 0.6492
1/4 6.3500 0.2500 20 1.2700 0.0500 0.6875 0.7790
5/16 7.9375 0.3125 18 1.4111 0.0556 0.7638 0.8656
3/8 9.5250 0.3750 16 1.5875 0.0625 0.8593 0.9738
7/16 11.1125 0.4375 14 1.8143 0.0714 0.9821 1.1129
1/2 12.7000 0.5000 13 1.9538 0.0769 1.0576 1.1985
9/16 14.2875 0.5625 12 2.1167 0.0833 1.1458 1.2984
5/8 15.8750 0.6250 11 2.3091 0.0909 1.2499 1.4164
3/4 19.0500 0.7500 10 2.5400 0.1000 1.3749 1.5580
7/8 22.2250 0.8750 9 2.8222 0.1111 1.5277 1.7311
1 25.4000 1.0000 8 3.1750 0.1250 1.7186 1.9475
1 1/8 28.5750 1.1250 7 3.6286 0.1429 1.9642 2.2258
1 1/4 31.7500 1.2500 7 3.6286 0.1429 1.9642 2.2258
1 3/8 34.9250 1.3750 6 4.2333 0.1667 2.2915 2.5967
1 1/2 38.1000 1.5000 6 4.2333 0.1667 2.2915 2.5967
1 5/8 41.2750 1.6250 5 5.0800 0.2000 2.7498 3.1161
1 3/4 44.4500 1.7500 5 5.0800 0.2000 2.7498 3.1161
2 50.8000 2.0000 5 5.6444 0.2222 3.0553 3.4623
2 1/4 57.1500 2.2500 5 5.6444 0.2222 3.0553 3.4623
2 1/2 63.5000 2.5000 4 6.3500 0.2500 3.4373 3.8951
2 3/4 69.8500 2.7500 4 6.3500 0.2500 3.4373 3.8951
3 76.2000 3.0000 4 6.3500 0.2500 3.4373 3.8951