本文系全自動[GAD]
齒輪設計軟件之內(nèi)容,限于篇幅,未包含功率部份, 符合ISO.9085 漸開線園柱齒輪標準。
2#@-t{\3-p t;W'<.m_ 河海大學常州校區(qū) 胡瑞生 2009. 10 . 18
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]u47]L# 本程序適用于: 速比 u < 4, 求取最大功率, 而且
w_*$wVl 一般不發(fā)生切削干涉與嚙合干涉。
wUH:l 當速比 2 > u > 4 尚需作局部修正
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6 -IThC 己知: 產(chǎn)品的工作條件: 中心距 [A`] , 速比 [u]
6c*QBzNL 步驟00 1 起步假設 [Z1齒 經(jīng)驗值]
/J!~0~F if ( u <=1.25 )Z1 =41.0
b$Q#Fv&P if ( u >1.25 .and. u <=1.50 ) Z1 = 37.0
9PG3cCr? if ( u >1.50 .and. u <=1.75 ) Z1 = 33.0
rQ)I if ( u >1.75.and. u <=2.00 ) Z1 = 28.0
bq z*90 if ( u >2.00 .and. u <=2.50 ) Z1 = 25.0
!_?#f| if ( u >2.50 .and. u <=3.00 ) Z1 = 23.0
KNSMx<GP if ( u >3.00 .and. u <=3.50 ) Z1 = 21.0
; Z2 if ( u >3.50 .and. u <=4.00)Z1 = 19.0
T1uOp5_]B if ( u >4.00 .and. u <=4.50 ) Z1 = 18.0
?GGBDql if ( u >4.50 .and. u <=5.00) Z1 = 17.0
|z`AIScT if ( u >5.00 .and. u <5.50 )Z1 = 16.0
,@aF# if ( u >5.50 .and. u <6.00 )Z1 = 15.0
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T0 if ( u >6.00 ) Z1 = 14.0
te+r.(p Z1 = Z1
m'U>=<!D Z2 = int ( Z1 * u +0.50 ) 取整數(shù)
qjH/E6GGg u = Z2/ Z1
vq1u!SY 齒 數(shù) 比[ u] ≡ u
1WAps#b. 步驟002起步假設螺旋角 [ β 經(jīng)驗值 ]
v\-7sgZR if ( u <=1.25 )β= 24.0
07>Iq8<mu if ( u >1.25 .and. u <=1.50 ) β= 22.0
nxs'qX(D if ( u >1.50 .and. u <=1.75 ) β= 20.0
d+]/0J!c if ( u >1.75. and. u <=2.00 ) β= 18.0
ye`-U?7. if ( u >2.00 .and. u <=2.50 ) .β= 16.0
u(g9-O if ( u >2.50 .and. u <=3.00 ) β= 14.0
(#rhD} if ( u >3.00 .and. u <=3.50 ) β= 12.0
>uwd3XW5 if ( u >3.50 .and. u <=4.00) β= 11.0
q}hHoSG]= if ( u >4.00 .and. u <=4.50 ) .β= 10.0
v|:TYpku3 if ( u >4.50 .and. u <=5.00) β= 10.0
`FmRoMW9+ if ( u >5.00 .and. u <5.50 )β= 9.0
:)kWQQ+, if ( u >5.50 .and. u <6.00 )β= 7.0
t{O2JF#5u if ( u >6.00 ) β= 6.0
<,Fj}T- β= bff
&J,&>CFc jtt = Atan ( tand (20) /Cos( bff) )
trlZ 壓力角 [初值][αt] = jtt
v(^;% 步驟003 導出 [Axi] 幾何性能綜合
參數(shù)概念
~/;shs<9EM 令 [Axi] ≡ Cos(αt) / [ 2*Cos(β)*Cos(α`) ]
PF:'dv 此系數(shù)綜合包含螺旋角. 壓力角. 嚙合角因子, 意義很重要
TTo5"r9I8 中心距 [A`] ≡ Mn *Z1 *(1+u) *Axi
1
Lz 常規(guī)采用 [V+] 變位體制齒輪 [V-變位制不利于強度]
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