-6
. .
ϳ , ( , ) , .
. . , , (V > 30 /c), , , , , ( ).
(.6-1; 6-2; 6-3), - (.6-5), , (.6-4).
1 () (.6-2) () 4 , .
ϳ (.6-1) (.6-2; 6-3; 6-5).
璺 ( .).
1 (.6-1), 2, 3 4 , 5 , 6 . ֳ , , , , , .
(.6-3).
, , , , , , .
. , .
. 6-1. ϳ | .6-2. 璺 : 1-; 2- ;3- ; 4- |
, , .
, , , .
. 6-3. (1 ) | . 6-4. ϳ | . 6-5. - |
, , . , ( 200), ( 40%), . (), , , . ֳ , , . , , .
|
|
. , , , ( ...). , , . . . .
(.). , , v (2/).
, , . , .
: , , .
, , . , , , . . ' , 璺 : .
, h Rz ( 6-6 )
h>Rz1 + Rz2
(6-1)
. . 0,0010,005 ( ).
(6-1) , . , . 0,008 0,1.
.
|
|
. . .
. . . (1883 .) , ' , . . 6-7 , 볺 F. ϳ 䳺 Q V. V (. 6-7,), . . .
V (.6-7,) , , , .
) )
.6-7.
̳ . . (.6-7,), F. . , V.
ó , , . .
. (.6-8,).
ω ≥ω , . 6-8,. dz h, . ω → ∞ → 0. , , .
, h :
h=(μω/p),
(6-2)
μω/p ; μ ' ( ), .; ω = πņ/30 ; p=R/ld - (R- ).
' . dz . , :
1. ̳ .
2. ' .
3. , , .
ϳ, ( , , , .) :
) ,
= R /(ld)≤ [ ];
(6-3)
)
pV ≤[ pV ],
(6-4)
R ; d (); l ; V .
[ V ] , .
l d. . l/d . l/d 0,61,0.
|
|
0,55 ,
(6-5)
y=s/d ;
s ;
μ , ;
ω ;
, ;
m = 1,5, l ≤ d, m = 1,0, l > d.
R d l:
.
(6-6)
p F ()
.
(6-7)
-29 ( 6-9).
18 17, 16. , , 9 11 10 , 12, ' 14. 6 7 5 3 4 2. ͳ , 4, ' ' .
1. 15, , .
13, 8.
, , . : .
17 , ' 19 20.
(. 6-9) :
1 ; 2, 5 ; 3 ; 4 ; 6-; 7 ; 8 ; 9 -; 10 ; 11 ; 12 ; 13 ; 14 ; 15 16 ; 17 ; 18 ; 19 ; 20
1. ϳ :
- d =60;
- l =60;
- s =0,06;
- .-5-5-5;
- HRC 3035.
2. R =0,55,0 .
3. , /: 80; 141; 251 n, /: 760; 1350; 2400.
4. -20A; -30A; -40A.
5. R -0,5.
6. .
7. 380.
8. -12-4 0,8 1350 / ( -141/ ).
|
|
/ | ʳ ' ν, (2/), 500 | μ, | ρ, /3 | |
-20A | 17...23 | 0,020 | ||
-30A | 28...33 | 0,024 | ||
-40A | 35...45 | 0,042 |
.6-10.
1. , d l, s, n, w, , ' m.
2. R =0,5...5 0,5 .
3. ϳ f ( . 6-5) .2 .
4. f w.
5. 200, .
6. . 2.
7. ϳ , .
8. 0 , 0 .
9. , ( n =760/). , .
10. .
11. ϳ 500 ( ) 3...4 . ( 䳺 , - , ).
12. 200.
13. .
14. 0 . (.6-10) F .
15. 500 ( 5000 ) . 0, . .
16. , , . .
17. .
18. f w.
19. () .
20. .
1. ?
2. ?
3. ?
4. f, F ?
5. -29?
˳
1..., .., ... . .: , 1979.
2.... . .: ,1984.
6
_____________________________________________________
1.
2. :
ϳ :
- d =______
- l =______
- s = _______
- ψ = s/d =_________________
- - __________________________________.
_____ ______ .
n1 =_______ /; n2 = _____ /; n3 = ____ /.
.
ω1 = ___ /; ω2 = ___ /; ω3= _____ /.
, :
|
|
- _____________________________________.
- ρ = [/3];
- ν = ____________ [(2/)];
- μ = _____________ (×).
f (. 6-5)
R, | p, (/2) | f ω / (. 6-5) | ||
ω1 =80 | ω2 =141 | ω3 =251 | ||
0,5 1,0 1,5 2,0 2,5 3,0 3,5 4,0 4,5 5,0 |
R, | ω, / | ||||||||
ω1 =80 | ω2 =141 | ω3= 251 | |||||||
, | F, ( ) | f e=F / R | , | F, ( ) | f e=F / R | , | F, ( ) | f e=F / R | |
0,5 1,0 1,5 2,0 2,5 3,0 3,5 4,0 4,5 5,0 |
f f R ω
f , f
R,
______________ _____________________________________________________________________
_________________________ _______________________
______________________200___. _______________________200___.