Operating manual
CNC 8055
CNC 8055i
WORKING WITH OPERATIONS OR CYCLES
3.
·TC· OPTION
SOFT: V02.2X
·127·
Threading cycle
Normal pitch Whitworth thread: B.S.W. (W)
The threads must be defined in mm or inches. For example, to define a Whitworth thread with a 1/16
pitch, enter 1.5875 mm or 0.0625 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 = 0.6403 x Pitch
Depth in external threads = 0.6403 x Pitch
Thread Step Depth (mm)
(mm) (inches) Edges (mm) (inches) Internal External
1/16 1.5875 0.0625 60 0.4233 0.0167 0.2710 0.2710
3/32 2.3812 0.0937 48 0.5292 0.0208 0.3388 0.3388
1/8 3.1750 0.1250 40 0.6350 0.0250 0.4066 0.4066
5/32 3.9687 0.1562 32 0.7938 0.0313 0.5083 0.5083
3/16 4.7625 0.1875 24 1.0583 0.0417 0.6776 0.6776
7/32 5.5562 0.2187 24 1.0583 0.0417 0.6776 0.6776
1/4 6.3500 0.2500 20 1.2700 0.0500 0.8132 0.8132
5/16 7.9375 0.3125 18 1.4111 0.0556 0.9035 0.9035
3/8 9.5250 0.3750 16 1.5875 0.0625 1.0165 1.0165
7/16 11.1125 0.4375 14 1.8143 0.0714 1.1617 1.1617
1/2 12.7000 0.5000 12 2.1167 0.0833 1.3553 1.3553
9/16 14.2875 0.5625 12 2.1167 0.0833 1.3553 1.3553
5/8 15.8750 0.6250 11 2.3091 0.0909 1.4785 1.4785
3/4 19.0500 0.7500 10 2.5400 0.1000 1.6264 1.6264
7/8 22.2250 0.8750 9 2.8222 0.1111 1.8071 1.8071
1 25.4000 1.0000 8 3.1750 0.1250 2.0330 2.0330
1 1/8 28.5750 1.1250 7 3.6286 0.1429 2.3234 2.3234
1 1/4 31.7500 1.2500 7 3.6286 0.1429 2.3234 2.3234
1 3/8 34.9250 1.3750 6 4.2333 0.1667 2.7106 2.7106
1 1/2 38.1000 1.5000 6 4.2333 0.1667 2.7106 2.7106
1 5/8 41.2750 1.6250 5 5.0800 0.2000 3.2527 3.2527
1 3/4 44.4500 1.7500 5 5.0800 0.2000 3.2527 3.2527
1 7/8 47.6250 1.8750 5 5.6444 0.2222 3.6141 3.6141
2 50.8000 2.0000 5 5.6444 0.2222 3.6141 3.6141
2 1/8 53.9750 2.1250 5 5.6444 0.2222 3.6141 3.6141
2 1/4 57.1500 2.2500 4 6.3500 0.2500 4.0659 4.0659
2 3/8 60.3250 2.3750 4 6.3500 0.2500 4.0659 4.0659
2 1/2 63.5000 2.5000 4 6.3500 0.2500 4.0659 4.0659
2 5/8 66.6750 2.6250 4 6.3500 0.2500 4.0659 4.0659
2 3/4 69.8500 2.7500 4 7.2571 0.2857 4.6467 4.6467
2 7/8 73.0250 2.8750 4 7.2571 0.2857 4.6467 4.6467
3 76.2000 3.0000 4 7.2571 0.2857 4.6467 4.6467
3 1/4 82.5500 3.2500 3 7.8154 0.3077 5.0042 5.0042
3 1/2 88.9000 3.5000 3 7.8154 0.3077 5.0042 5.0042
3 3/4 95.2500 3.7500 3 8.4667 0.3333 5.4212 5.4212
4 101.6000 4.0000 3 8.4667 0.3333 5.4212 5.4212
4 1/4 107.9500 4.2500 3 8.8348 0.3478 5.6569 5.6569
4 1/2 114.3000 4.5000 3 8.8348 0.3478 5.6569 5.6569
4 3/4 120.6500 4.7500 3 9.2364 0.3636 5.9141 5.9141
5 127.0000 5.0000 3 9.2364 0.3636 5.9141 5.9141
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