1. , (3.7), ; 2 () ; KH b [s ] ; u ; z1 z2 ,
w1, w2 n 1, 2 . , 2185-66:
1- : 1; 1,25; 1,6; 2,0; 2,5; 3,15; 4,0; 5,0; 6,3; 8,0; 10,0;
2- : 1,12; 1,4; 1,8; 2,24; 2,8; 3,55; 4,5; 5,6; 7,1; 9.0; 11,2.
.
. z1 z2 u.
y ba 2185-66: 0,10; 0,125; 0,16; 0,25; 0,315; 0,40; 0,50; 0,63; 0,80; 1,00; 1.25.
y ba £0,25; y ba = 0,25 ¸ 0,63, ( y ba < 0,4)
2. a w (3.7) 2185-66 ( ):
1- : 40, 50, 63, 80, 100, 125, 160, 200, 250, 315, 400, 500, 630, 800, 1000, 1250, 1600, 2000, 2500;
2- : 71, 90, 112, 140, 180, 224, 280, 355, 450, 560, 710, 900, 1120, 1400, 1800, 2240.
.
3. (0,010,02) a w 9563-60* ( ):
1- : 1; 1,25; 2; 2,5; 3; 4; 6; 8; 10; 12; 16; 20.
2- : 1,375; 1,75; 2,25; 2,75; 3,5; 4,5; 7; 9; 11; 14; 18; 22.
.
. n mt.
4. z S = z 1 + z 2.
( )
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b b = 8¸15, b = 25¸40 ( 45).
5. :
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z 1 z 2
2,5 % u £ 4,5 4 % > 4,5.
:
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;
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a w . b:
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. ,
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, ,
6. : : zmin :
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, .
Z
Z (3.4)
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, , (3.4). Z e , :
a,
v, / | |||||
1 | |||||
1,02 1,06 1,1 | 1,02 1,05 1,09 1,16 | 1,03 1,07 1,13 _ | 1,04 1,10 | 1,05 1,12 | |
. a = 1. |
3.5. b
< 350 | > 350 | |||||
I | II | III | I | II | III | |
0,4 | 1,15 | 1,04 | 1,0 | 1,33 | 1,08 | 1,02 |
0,6 | 1,24 | 1,06 | 1,02 | 1,50 | 1,14 | 1,04 |
0,8 | 1,30 | 1,08 | 1,03 | 1,21 | 1,06 | |
1,0 | 1,11 | 1,04 | _ | 1,29 | 1,09 | |
1,2 | 1,15 | 1,05 | 1,36 | 1,12 | ||
1,4 | 1,18 | 1,07 | 1,16 | |||
1,6 | 1,22 | 1,09 | _ | 1,21 | ||
1,8 | 1,25 | 1,11 | ||||
2,0 | 1,30 | 1,14 | ||||
. , I, : II : III . |
= a b v, . 3.4, 3.5 3.6.
, (3.9) :
3.6. v,
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v, | |||||
5 | |||||
- | £ 350 > 35"0 £ 350 > 350 | 1,05 1,10 1,0 1,0 | 1,01 1,05 | 1,02 1,07 | 1,05 1,10 |
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s lim b hl , (3.9); [ SH ].
ZR : ZR = 1,0 Ra 0,63¸1,25 ( 7- 6- ); zr = 0,95 Ra = 1,25¸2,5 ( 7- ); zr = 0,9 RZ = 10¸20 ( 8- 9- ).
Zv, , , 21354-75; :
Zv, v, / | ||||
£ 350 > 350 | 1,0 1,0 | 1,04 1,02 | 1,07 1,03 | 1,10 1,05 |
KL, , .
, , d2 £ 700 ;
, 5-10 / d2 £ 700 , ZR Zv K1K xH . [s ], (3.9).
, ( ), ; , ,
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[s H ], £ 350 3,1s > 350 4l,3 HRC; (3.21) s - , (3.19); 2 max 2 () .