к в ning qiymatini 3.3-jadvaldan u zatm aning tezligi, aniqlik darajasiga nisbatan tanlanadi. h b

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Bog'liq
Mashina detallari (R.Tojiboyev va b.)

A n iq lik dara jasi Koeffi- tsent- lar U zatm anin g tezligi, m/s 1 2
Ilova: Suratda t o ‘g ‘ri tishli, m axrajda qiya va aylanasimon tishli gMldiraklar uchun berilgan. Tish yuzasining qattiqligi >350 hb
K Fa................................................. 0 ,7 2 0 ,8 1 0 ,9 1 1 ,0 66
(3.7 - rasm) tish qadami pb ga nisbati: e = — a Pb

к в
ning qiymatini 3.3-jadvaldan
u zatm aning tezligi, aniqlik darajasiga nisbatan tanlanadi.
h b
<
350 b o ‘lganda
KHv
,
KFv
koeffitsiyent qiymatlari
_______^
^
___________________________________________
3.3- jadval
A n iq 
lik
dara
jasi
Koeffi-
tsent-
lar
U zatm anin g tezligi, m/s
1
2
5
6
8
10
6
1.03/
1.01
1.06/
1.02
1.12/
1.03
1.17/1.04
1.23/
1.06
1.28/
1.07
1.06/
1.02
1.13/
1.05
1.26/
1.10
1.40/1.15
1.58/
1.20
1.67/
1.25
7
Kn,
1.04/
1.02
1.07/
1.03
1.14/
1.05
1.21/1.06
1.29/
1.07
1.36/
1.08
K t ,
1.08/
1.03
1.16/
1.06
1.33/
1.11
1.50/1.16
1.67/
1.22
1.80/
1.27
8
K *
1.04/
1.01
1.08/
1.02
1.16/
1.04
1.24/1.06
1.32/
1.07
1.4/1.08
K Fv
1.10/
1.03
1.20/
1.06
1.38/
1.11
1.58/1.17
1.78/
1.23
1.96/
1.29
9
K,u.
1.05/
1.01
1.1/
1.03
1.2/1.05
1.3/1.07
1.4/1.09
1.5/1.12
K Fv
1.13/
1.04
1.28/
1.07
1.50/
1.14
1.77/1.21
1.98/
1.28
2.25/
1.35
Ilova:
Suratda t o ‘g ‘ri tishli, m axrajda qiya va aylanasimon tishli
gMldiraklar uchun berilgan.
Tish yuzasining qattiqligi >350
hb
boMganda t o ‘g ‘ri tishli silindr
sim on gMldiraklar uchun
K Nv= l . l , K Fv= l , 2 ; qiya tishli silindrsimon
gMldiraklar uchun KNv=1.05, K Fv= l , l tanlash m um kin.
Ka-
yuklanishni tishlararo notekis taqsimlanishini hisobga oluvchi
koeffitsiyent, uning qiymati tishli gMldiraklarning aniqlik darajasiga
h am da uzatm aning tezligiga bogMiq boMib, quyidagicha olish tavsiya
etiladi.
T o ‘g 'ri tishli silindrsimon gMldiraklar uchun KNa= K Fa= l , 0 . Qiya
tishli silindrsimon gMldiraklar uchun tishli gMldiraklarning aniqlik
darajasiga bogMiq boMib quyidagicha tanlanadi:
Aniqlik darajasi.............
6
,
7,
8
,
9
K Fa................................................. 0 ,7 2
0 ,8 1
0 ,9 1
1 ,0
66
www.ziyouz.com kutubxonasi

Q oplanish
koeffitsiyen ti
-
ea,
ilashish
sifatining
asosiy
k o ‘rsatkichlaridan biri, y a ’ni ilashish c h i z i g i qa ni
(3.7 - rasm)
tish
qadami pb ga nisbati:
e = —
a Pb
Tishli
uzatm alarda
harakat
uzluksiz
b o ‘ lishi
uchun
tishli
g ‘ildiraklar ilashganda bir ju ft tishlar ilashish chizig‘idan chiqishga
yaqinlashganda ikkinchi ju ft tishlar ilashish c h i z i g i g a kirgan b o ‘lishi
kerak, y a ’ni
га>1
shart bajarilishi kerak. Bu qiymat bir vaqtning o ‘zida
qancha ju ft tishlar o ‘zaro ilashganligini k o ‘rsatadi. Masalan, s a= l , 4
b o i g a n d a ilashish vaqtning 40% da ikkinchi ju ft tishlar ilashgan b o ‘lib,
60 % vaqt davomida bir ju ft tishlar ilashgan b o ‘ladi. Shuning uchun s a
qiymati oshishi bilan bir vaqtning o ‘zida ikki ju ft tishli g ild ir a k la r
ilashishda b o ‘ladi.
Tishli g ild ira k la rd a korrektsiya ishlatilmagan hollarda sa qiymati
quyidagicha aniqlanadi.

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