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3 - Fagor Automation

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5.<br />

ROSCAS NORMALIZADAS<br />

CNC 8070<br />

(REF: 1305)<br />

·242·<br />

Rosca whitworth de passo normal — BSW (W.)<br />

5.3 Rosca whitworth de passo normal — BSW (W.)<br />

Ciclos fixos (modelo ·T·)<br />

As roscas têm que ser definidas em milímetros ou em polegadas. Por exemplo, para definir<br />

uma rosca Whitworth de passo de 1/16 deve-se introduzir o valor 1,5875 mm ou 0,0625<br />

polegadas.<br />

O CNC calcula o passo e a profundidade de acordo com estas fórmulas:<br />

Passo em milímetros = 25,4 / número de fios<br />

Passo em polegadas = 1 / número de fios<br />

Profundidade em roscas interiores = 0,6403 x Passo<br />

Profundidade em roscas exteriores = 0,6403 x Passo<br />

Rosca Passo Profundidade (mm)<br />

(mm) (Polegadas) Fios (mm) (Polegadas) Interiores Exteriores<br />

1/16 1,5875 0,0625 60 0,4233 0,0167 0,2710 0,2710<br />

3/32 2,3812 0,0937 48 0,5292 0,0208 0,3388 0,3388<br />

1/8 3,1750 0,1250 40 0,6350 0,0250 0,4066 0,4066<br />

5/32 3,9687 0,1562 32 0,7938 0,0313 0,5083 0,5083<br />

3/16 4,7625 0,1875 24 1,0583 0,0417 0,6776 0,6776<br />

7/32 5,5562 0,2187 24 1,0583 0,0417 0,6776 0,6776<br />

1/4 6,3500 0,2500 20 1,2700 0,0500 0,8132 0,8132<br />

5/16 7,9375 0,3125 18 1,4111 0,0556 0,9035 0,9035<br />

3/8 9,5250 0,3750 16 1,5875 0,0625 1,0165 1,0165<br />

7/16 11,1125 0,4375 14 1,8143 0,0714 1,1617 1,1617<br />

1/2 12,7000 0,5000 12 2,1167 0,0833 1,3553 1,3553<br />

9/16 14,2875 0,5625 12 2,1167 0,0833 1,3553 1,3553<br />

5/8 15,8750 0,6250 11 2,3091 0,0909 1,4785 1,4785<br />

3/4 19,0500 0,7500 10 2,5400 0,1000 1,6264 1,6264<br />

7/8 22,2250 0,8750 9 2,8222 0,1111 1,8071 1,8071<br />

1 25,4000 1,0000 8 3,1750 0,1250 2,0330 2,0330<br />

1 1/8 28,5750 1,1250 7 3,6286 0,1429 2,3234 2,3234<br />

1 1/4 31,7500 1,2500 7 3,6286 0,1429 2,3234 2,3234<br />

1 3/8 34,9250 1,3750 6 4,2333 0,1667 2,7106 2,7106<br />

1 1/2 38,1000 1,5000 6 4,2333 0,1667 2,7106 2,7106<br />

1 5/8 41,2750 1,6250 5 5,0800 0,2000 3,2527 3,2527<br />

1 3/4 44,4500 1,7500 5 5,0800 0,2000 3,2527 3,2527<br />

1 7/8 47,6250 1,8750 5 5,6444 0,2222 3,6141 3,6141<br />

2 50,8000 2,0000 5 5,6444 0,2222 3,6141 3,6141<br />

2 1/8 53,9750 2,1250 5 5,6444 0,2222 3,6141 3,6141<br />

2 1/4 57,1500 2,2500 4 6,3500 0,2500 4,0659 4,0659<br />

2 3/8 60,3250 2,3750 4 6,3500 0,2500 4,0659 4,0659<br />

2 1/2 63,5000 2,5000 4 6,3500 0,2500 4,0659 4,0659<br />

2 5/8 66,6750 2,6250 4 6,3500 0,2500 4,0659 4,0659<br />

2 3/4 69,8500 2,7500 4 7,2571 0,2857 4,6467 4,6467<br />

2 7/8 73,0250 2,8750 4 7,2571 0,2857 4,6467 4,6467<br />

3 76,2000 3,0000 4 7,2571 0,2857 4,6467 4,6467<br />

3 1/4 82,5500 3,2500 3 7,8154 0,3077 5,0042 5,0042<br />

3 1/2 88,9000 3,5000 3 7,8154 0,3077 5,0042 5,0042<br />

3 3/4 95,2500 3,7500 3 8,4667 0,3333 5,4212 5,4212

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