P1 hamda n aga nisbatan tanlanadi
? X = C?P kVt,
bunda: Cp = l . l ish rejimini hisobga oluvchi koeffitsiyent qiymati
ja d v a ld a n olinadi.
F 1 = 1.1 • 3.67 = 4.037kVt
P 1 = 4 . 0 3 7 k V t ,
щ = 1430мин-1, b o ‘lganda d 1=90m m .
v) Ensiz ponasim on tasm alar uchun jad v ald an tasm aning (SPZ) turiga
h a m d a uzatilayotgan
Г2 m om entga nisbatan tanlanadi. T asm an in g turi
SPZ,
Тг< \ 50N m b o i g a n d a d i= 6 3 m m .
3. Tasm alarni tezligi
a) N o rm al kesimli ponasim on tasm alar uchun
17 _7T -d1 n 1 _ Я.14 * 0 .0 9 -1 4 3 0 _
£ n M / у —
— (3 /
j r 1
60
60
7 L
b) Y arim ponasim on kesimli tasm alar uchun
j r t - f i j r , _ Я .'4 - 0 .0 » 1 4 3 0 _
^ M
1
6 0
6 0
/ c
v) Ensiz ponasim on tasm alar uchun
у _ n d 1n 1 _
3 .1 4 -0 .0 6 3 - 1 4 3 0
— ^ М / ’ 1
6 0
_
6Q
~~
4. Yetaklanuvchi shkiv diametri
a) N orm al kesimli tasm alar uchun
d 2 = 4
- h ( 1 - ^ = 9 0 - 1 . 8 7 ( 1 - 0 . 0 1 5 ) = 165 mm \ = 0.015 elastik sirpanish koeffitsiyenti.
146
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Aniqlangan qiymati
d2 =
170mm qabul qilamiz.
b) Yarim ponasim on tasmali uzatm a uchun d i= 9 0 m m b o ‘iganligi uchun
d2 = 170
mm
.
v) Ensiz tasmali uzatm a uchun
d 2 = 4 - и ( 1 - £ ) = 6 3 - 1 . 8 7 ( 1 - 0 . 0 1 5 ) = 1 1 6 m m Aniqlangan q i y m a t , d 2 = 120
mm
qabul qilamiz
5. Uzatish sonining hisobiy qiymati
a) N orm al ponasimon tasm alar uchun
1
d,
90