, 7.3.
, F , ( 7.11).
F, , FN F. R r. R x-x ,
FB = R×sin (b + r) = F × sin (b + r)/ cos (b + r) = F × tg (b + r)
- , , .
1) . .
2) [ s ], [ s ] , [ s ], [ s ], [ t ] - ,
[ s ] , [ s ] = 2,5 3,0.
[ s ] = s / [ s ], (7.1)
s - ( 1).
:
- () [ s ] = 42... 55 ;
- : [ s ] = 34 44 , [ s ] = 20 24 .
3) [ q ] . : [ q ] = 5 6 , [ q ] = 8 10 , [ q ] = 10 12 .
4) ( ) yh, . yh = 0,5; yh = 0,75; yh = 0,541.
5) - , - : yH = 1,2 2,5; - yH = 2,5 3,5 ( ).
6)
, (7.2)
: d1, d2, d, P ( 2, 3).
, , , .
7) y
tg y = n∙P/(p∙d2 ), (7.3)
y < r, (7.4)
n ; r = arctg f - ; f - ( 7.11)
7.11
( ) | 0,04 0,05 |
() | 0,15 0,18 |
, () | 0,30 0,35 |
() | 0,30 0,35 |
( ) | 0,08 0,10 |
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8) .
)
. (7.5)
) , ,
£ 10 12. (7.6)
) D :
, (7.7)
; d - .
. (7.8)
)
D = (1,25... 1,35) D. (7.9)
9) . . ( ) , , , :
. (7.10)
, (7.11)
F - ; d 1 - ;
t = T / (0,2d1 3); (7.12)
T - .
(. )
. (7.13)
10) . .
. (7.14)
- , ( 7.12).
, (7.15)
- ( = 1; , = 2); l - ( - ; , l = l0 H / 2); i - ( ).
7.12
m l / i | |||||||||||
j | 1,00 | 0,91 | 0,86 | 0,82 | 0,76 | 0,70 | 0,62 | 0,51 | 0,37 | 0,29 | 0,24 |
1,00 | 0,91 | 0,83 | 0,79 | 0,72 | 0,65 | 0,55 | 0,43 | 0,30 | 0,23 | 0,19 |
j .
11) . , ,
. (7.16)
, , FP =200 ,
T P = l P FP, l P = T P / FP. (7.17)
7.3
7.3.1 ( 7.12) Q = 50 . l0 = 500, - 45, - 18. .
. 1
1.1 Q , .. F = Q. .
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1.2 (7.2) d 2 , = 0,5, = 2,5; [ q ] = 6 (. .. 3, 4, 5)
=
= = 46 .
( ) ( 2) : d = 50, d 1 = 41 , d 2 = 46, p = 8 .
1.3 ψ (7.3) (7.4), 7.11 f = 0,15 ( = 8,53)
= 0,0546; 3,17.
, > .
1.4 . = 90 , (7.7)
= =
= 48,6 < = 90 .
.
1.5 . l ( (7.5) = 2,5×46 = 115 )
= 500 115/2 443 .
( = 2; = 41 / 4 = 10,25 ) (7.15) = 2× 443/10,25 85.
1.6 5.11 = 0,6.
, (7.1)
= 360 / 3 = 120 ,
(7.14)
= 37,4 <
< j × [ s ] = 0,6×120 = 72 .
.
2
2.1 D (7.8), = 22 , :
= = 79,1
D = 80.
2.2 D (7.9)
= 1,35·80 = 108 .
D = 110 .
2.3
11,17 ,
[ σ ] = 90 .
3
3.1 (7.16)
= 50·103 tg (3,17˚ + 8,53˚)· = 238153 ·.
3.2 (7.17)
1191 .
1190 .
8 .
8.1
, , , . , , , . ().
i, i, i ( ) .
: . . , , .
( ).
8.93 8.10 . 8.1 8.10.
, , w1.
:
- ;
- , , ;
- .
...: h = 0,97; h = 0,95; -, -, h = 0,7; 0,75; 0,8; h = 0,99.
.
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