:
2.6.1. :
d1=m×z1 d2=m×z2.
2.6.2. :
da1=d1+2m da2=d2+2m.
2.6.3. :
df1=d1-2,5m df2=d2-2,5m.
2.6.4. : b2=ybm×m,
: b1=b2+5 .
V=p×d1×n1/(60×1000), /. 1643-81: 9 V £3 /; 8 V 3 5 /, 7 V 5 10 /.
, . 2.4:
,
=KFa×KFb×KFV - ( .7, .8).
10 % 5 %. .
,
Ft1=Ft2=2T1/d1,
Fr1=Fr2=Ft×tga, a=200.
50 , 25 / 6. .
: 2 (Z), 2 200 ( 1), , =5,5 n1 =900 -1 (/) ().
1
.9 d1. , .
d2=d1·u, u=n1/n2 . d2 () 20889-88: 50; 56; 63; 71; 80; 90; 100; 112; 125; 140; 160; 180; 200; 224; 250; 280; 315; 355; 400; 450; 475; 500; 560; 630; 710; 800; 900; 1000; 1120; 1250; 1400; 1600; 1800; 2000; 2240; 2500.
u′=d2/d1.
:
. :
d1 + d2 ³ a ³ 0,55(d1+d2)+T0;
T0 , 9.
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Lp () 1284.1-89: 400; 450; 500; 560; 630; 710; 800; 900; 1000; 1120; 1250; 1400; 1600; 1800; 2000; 2400; 2500; 2800; 3150; 3550; 4000; 4500; 5000; 6300; 7100; 8000; 9000; 10000; 11200; 14000; 16000; 18000.
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