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Diketahui : Np = 1200 rpmNp

Ng=

Dg

Dg

Ng = 192 rpm Tp = 18 (table 28.2)

P = 1 kw

= 20

!p ="0 #pa

!g = $% #pa

20& !'erl!a

et m = m!ule i* mm a* +=,a-e with i* mm

./=Np

Ng =1200

192 = .2$ =Tg

Tp

e k*!w that pit-h li*e 'el!-it :

' = D pNp

60 = mDpNp

60 = m .18.1200

60 = 11%0.93 mm

s

= 1.1% m

m

s

455um5i*g 5tea l!a -!*iti!*5 a* % h!ur5 !, 5er'i-e per a6 the 5er'i-e

,a-t!r (75) ,r!m table 28.10 gi'e* b :

75 = 0.8

e k*!w that e5ig* ta*ge*tial t!!th l!a.

T=P

V 75 =10

3

1.13m 0.8 =707.96

m N

el!-it ,a-t!r = 7' =3

3+V =3

3+1.13m

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p = 0.1$" 0.912

Tp

=0.1$" 0.912

18

=0.10%

4* t!!th ,r!m ,a-t!r ,!r gear :

g = 0.1$" 0.912

Tg

=0.1$"

0.912

6.25x 18

=0.1"$

;!p p = "0 0610% = 9.12

;!g g = $% 0.1"$ = 3.8$

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TG

18 =.2$

T+=1126$

De5ig* ,!r 5pur gear5

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p=061$" B (06912@18) = 0610%

Cr!m table 28.1 ,ull epth i*,!lute 55tem

4e* um = 1m =11.2$ =26$

Dee* Deem = 1.2$ m =162$26$

=%612$

!rki*g Dept = 2 m =226$

=$

#i*imum t!tal epth =262$ =262$26$

=$62$

T!!th thi- k*e55 =16$308m =16$30826$ =%6923

#aimum -leara*-e =062$ =062$26$

=062$

Cillet raiu5 atr!!t =06" =06"?26$ =1

De5ig* ,!r the pi*i!* 5ha,t

e k*!w that the *!rmal l!a a-ti*g betwee* the t!!th 5ur,a-e

* =WT

cos20=340,42

cos20=362,26N

4* weight !, the pi*i!*

p=0.00118Tp. m2

= 0.00118 18 2$ 2.52

=%.%1

/e5ulta* l!a a-ti*g !* the pi*i!*

/ = (WN)2+()2+2WN . .cos

= (362.26)2+(3.31)2+2x 362.26x 3.31x cos20

= %$6 %3 N

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455um5i*g that the pi*i!* i5 !'er hug5 !* the 5ha,t a* !'erha*g a5 100

mm6 there,!re. e*i*g m!me*t !* the 5ha,t ue t! re5ulta*t l!a

# = / 100 = %$.%3 100 = %$%3 N mm

4* Twi5ti*g #!me*t !* the 5ha,t

T= T Dp

2 = %"06"2 45

2 =3$9."$ Nmm

Eui'ale*t Twi5ti*g #!me*t

Te = m

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