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Мой курсач(1)

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??????? "?????????? ??????????????"
?????????? "??????????, ?????????????? ? ????????????"
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? ???????? ??????
??????????????? ?.?
???????????????????????????
?????????-31
??????????????????? ?.?
????????? 2012
?????????
???????? ?????? ?? ?????????? "??????????, ?????????????? ? ????????????" ???????? ??????????????????? ?????????? ?.? ?????????
????????????? ??????? ?? ___ ?., ? ??? ????? 5 ??.; 6 ?????? ????????.
??????????? ??????????????? ??????????? ???????????, 2012 ?.
? ???? ???.014. ????????? ???????????? ????????? ??????? ??????? ?????????? ????????? ??????? ???????? ???????? ? ???????.
? ?????????? ????? 4 ? ?????? 1 ??????? ??????? ????????? ??????? � 15 F8/h6
? ?????????? ????? 4 ? ????? 3 ????????? ??????? � 15 P7/h6
? ?????????? ?????? ?????????? 8 ? ??????? ??????? ??????? 6 ????????? ??????? � 100 H7/h8
???????? ??????? ?????? ????? 4.
??????? ????????????? ???????? ????????? � 15h6 ?????.
?????????? ? ??????? ??????? ? ??????? ? ???????. ????????? ??????? ? ????????? ?????????? ? ?????????????? ???????, ????? ? ???????? ??????????, ??? ??????? ????????????? ?? ??????? ?????? ??????. ???????? ?????? ????????? ?????????? ??????? ???????????? ????????????.
??????????
????????
??????????? ???????? ??????????? ? ????????? ????????????? ?????????????? ??? ??????????? ?????? ???????? ????? ? ??????? ???????? ?????????????????? ???????.
?????????????????? ??????? ?????????????? ?????????? ???????????, ????????? ?? ??????? ???????? ??????????????. ?????? ????????? ?????????? ???????? ???????? ???????????, ???????????? ?? ??????????? ???????? ????????? ? ???????????? ??????? ?????????, ?. ?. ??????????????? ??????????? ???????????? ? ??????? ?????. ??????????? ?????????? ???????? ??????? ???????????? ? ?? ????????????, ?????????? ? ???? ???????? ???????????, ???????????? ?? ?????????? ? ???????? ???????????? ????????????? ???????? ??????? ????????????? ?????????? ? ?????? ??????????? ??????????.
????? ?????? ???????? ?????? ???????? ???????????? ? ????????? ??????????????????, ?????????????? ? ?????????? ??????????????? ??????? ? ?????????? ?????????? ?????? ? ??????? ?? ????????.
???????? ?????? ??? ???????? ??????.
? ?????????. ????.????????? ??????????????? ?????????????????? ????????D1D2? ???.??????. ????????????????? ????????, ??? ???.ZdD? ???.amZ?????????????????.014.1154576-3092098526051503,5307-6-6-D
?????? ? ????? ??????? ??????? ?????????????? ??????????.
????? ??????? ??????? ????????
??????????? ?????? 1 ? 4.
???? 4 ????? ??????????? ???????????? ????? ??? ????????? ? ?????? 1 ??????? ???????. ??? ??? ?? ????? ?????????? ???????? ????????? ???????, ??? ??????? ?????????? ????????? ????????? ??????? ? ??????? ? ??????? ???? (?.? ??? ????????? ???? ??????? ????? ???????? ??????? ????????? ? ?????? 1) � 15 F8/h6 .
?????????? ??????? ? ?????? ?????????
Dmax=D+ES=15+0.043=15.043 ??
Dmin=D+EI=15+0.016=15.016 ??
TD= Dmax- Dmin=0.027 ??
?????????? ??????? ? ?????? ????
dmax=d+es=15+0=15 ??
dmin=d+ei=15-0.011=14.989 ??
Td=dmax-dmin=0.011 ??
???????
Smax=Dmax-dmin=15.043-14.989=0.054 ??
Smin=Dmin-dmax=15.016-15=0.016 ??
TS=Smax-Smin=0.054-0.016=0.038 ??
????? 3 ??????????? ?????????? ?? ????? 4. ????????? ??????? ? ??????? ? ??????? ???? � 15 P7/h6 .
?????????? ??????? ? ?????? ?????????
Dmax=D+ES=15-0.011=14,989 ??
Dmin=D+EI=15-0.029=14,971 ??
TD= Dmax- Dmin=0.018 ??
?????????? ??????? ? ?????? ????
dmax=d+es=15+0=15 ??
dmin=d+ei=15-0.011=14.989 ??
Td=dmax-dmin=0.011 ??
???????
Nmax=dmax-Dmin=15-14.971=0.029 ??
Nmin=dmin-Dmax=14.989-14.989=0 ??
TN=Nmax-Nmin=0.029-0=0.029 ??
?????? ?????????? 8 ?????? ???????? ??????????????? ? ????????? ??????? ??????? ??????? 6. ????????? ??????? ? ??????? ??? ?????????? ???????? ??????-????????.� 100 H7/h8
?????????? ??????? ? ?????? ?????????
Dmax=D+ES=100+0.035=100.035 ??
Dmin=D+EI=100+0=100 ??
TD= Dmax- Dmin=0.035 ??
?????????? ??????? ? ?????? ????
dmax=d+es=100+0=100 ??
dmin=d+ei=100-0.054=99.946 ??
Td=dmax-dmin=0.054 ??
???????
Smax=Dmax-dmin=100.035-99.946=0.089 ??
Smin=Dmin-dmax=100-100=0 ??
TS=Smax-Smin=0.089-0=0.089 ??
1.2 ?????????? ??????? ? ???????. ??????? 5.
???????? ??????:
d=40 ??l=40 ??R=0.4 ??RZD=2.0RZd=3.2n=3600 ???-1t=70-80 �C????? ?-46
???????? ?????-????? 40?
???????? ????????- ???-1.
?????????? ??????? ????????.
P = (?10?^6*R)/(l*d) = (?10?^6*0.4)/(40*40*?10?^(-3) ) = 2.5*105 ?? ;
??? l-?????? ?????, d-??????? ?????, R-????????.
?????????? ??????? ????????.
?= (p*n)/30 = (3.14*3600)/30 = 376.8 ???/? ;
??? n-??????? ????????.
????????? l/d =1.0, ????? m1=0.760, m2=0.760
?????????? Sopt.
Sopt � d*v((?*?)/p*m_2 );
??? ?-???????????? ???????? ?????
??? ????? ?-46 ?1=0,012 ??*??2=0,016 ??*?
Sopt= 40*v((0.012*376.8*0.760)/(2.5*?10?^5 )) = 0.148 ??
?????????? ?????? h??= k??(RZd+RZD+??)*10-3=3*(3,2+2+2)*10-3=0,0216 ??
????????? ?????????? ???????? ????????????? ??????? Smin ? Smax
Smin = (m_1*?_1*?*d^2-v((m_1*?_1*?*d^2 )^2-16*p*h_??^2*m_1*?_1*?*d^2 ))/(4*p*h_?? )
Smin = (0.760*0.012*376.8*1600-v((5498.26)^2-16*2.5*?10?^5*?0.02?^2*5498.26))/(4*2.5*?10?^5*0.02) = (5498.26-v(30230863-8797216))/20000 = (5498.26-4629.6)/20000 = 868.66/20000 =0.043 ??
Smax = (m_2*?_2*?*d^2+v((m_2*?_2*?*d^2 )^2-16*p*h_??^2*m_2*?_2*?*d^2 ))/(4*p*h_?? )
Smax = (0.760*0.016*376.8*1600+v((7331)^2-16*2.5*?10?^5*?0.02?^2*7331))/20000 = (7331+v(53743561-11729600))/20000 = (7331+6481.8)/20000 = 13812.8/20000 = 0.69 ??
????????? ?????????? ???????? ?????????????? ????????????? ???????.
?tD= ?td =80-20=60 � C
aD=10-5 � C-1
ad=11.5*10-6 � C-1
?t=d*( aD* ?tD- ad* ?td) = 40*(10-5*60-11.5*10-6*60) = 40*(0.0006-0.00069) = -0.0036 ??
????=2*(RZD+RZd)*10-3 = 2*(3.2+2)*10-3 = 0.011 ??
S_min^F = Smin - ?t = 0.043+0.0036 = 0.0466 ??
S_max^F = Smax - ?t - ???? = 0.69+0.0036-0.011 = 0.683 ??
?? ???? 25347-82 ???????? ??????? ???
S_min^T = S_min^F;S_max^T = S_max^F
� 40 (H9 (�(+0.062@)))/(d9 (�(-0.080@-0.142)) )
S_min^T = 0.08 ??
S_max^T = 0,204 ??
S_m^T = ((S_max^T+S_min^T))/2 = ((0,08+0,204))/2 = 0,142 ??
??????????? ????? ?? ????? ??????????
T? = S_max^F - S_max^T = 0.683-0.204 = 0.479 ??
??????? ?????????? ??????
?1 = (S_min^T)/d = 0.08/40 = 0.002 ??
CR1 = (p*?_1^2)/(?_1*?) = (2.5*?10?^5*?0.002?^2)/(0.012*376.8) = 1/4.52 = 0.221
?1 = 0.3
?2 = (S_max^T)/d = 0.204/40 = 0.0051 ??
CR2 = (p*?_2^2)/(?_2*?) = (2.5*?10?^5*?0.0051?^2)/(0.016*376.8) = 6.5/6.03 = 1.078
?2 = 0.6
hmin1 = (S_min^T+?t)/2 *(1- ?1) = (0.08-0.0036)/2 * (1-0.3) = 0.026 ??
hmin2 = (S_max^T+?t+????)/2 *(1- ?2) = (0.204-0.0036+0.011)/2 * (1-0.6) = 0.04 ??
hmin1 > h??0.026 > 0.02
hmin2 > h??0.04 > 0.02
??????? ??????????? ?????? ???????????.
1.3 ?????????? ??????? ?????????? ???????. ??????? 45.
????????? ? 5-215
d = 75??; D = 130 ??; B = 20 ??; Fr = 5,2 ??; Cr = 51,9 ??; Cor = 41,9 ??.
????? ???? ?????????.
?????????? ?????????? ?????????? ??????? ????????? dm ? Dm. dm = ?75?_(+0,002)^(+0,015) Dm = ?130?^(+0,025)
?????????? ??? ??????????:
?????????? ?????? - ?????????????? ????????.
???????? ?????? - ????????? ??????.
????????? ????????????? ??????????.
P = Pr = X*V*Fr = 1*1*5200 = 5200 ?.
X = 1 - ?????????? ?????????.
V = 1 - ????????? ?????????? ??????.
??? ??? Cr = 51900 ?, ????? P/C = 5200/51900 = 0,1.
?????????? ????? ??????. ??? P/C = 0,1 - ????? ?????? ??????????.
???????? ??????? ?????????? ?? ???.
� 75 L5/k5
???????? ??????? ?????????? ? ??????.
� 130 H6/l5
????? ??????? ?????????? ?????????? ???????????? ??????????? ?? ????, ? ?????? ?????????? ?????????? ????? ??? ?????????? ?????.
????????????? ???????? ???????????? ???? ? ?????????.
???: .� 75 k5 ?????????: .� 130 H6
?????? ?????????? ????: 0,008 ??.
?????? ?????????? ?????????: 0,018 ??.
???????? ????? ????: 0,002 ??.
???????? ????? ?????????: 0,004 ??.
????????????? ????: Ra = 0,4 ???.
????????????? ?????????: Ra = 0,8 ???.
????? ??????? ????????? ? ????????.
??????? ????????????? ????????????? ???????? ??? ????????? ?????? 4 (4 ? 3).
??? ????????? ??????? ? ??????? ( � 15 P7/h6 ) ?????????? ??????? ????????????? ????????????? ????????.
??? ?????? ????????????? ??????? ?????????? ???????? ?? ??????????? ??????????? ????????? ? ??????????? ?? ???????? ??????. ??? ???????? ???????? ?? 500 ?? ?? ??? 303-76 ? ?????????? 2-17 ??????????????? 16 ????? ??????????? ???????????? ?????????, ??????? ?????????? ?? 20 ?? 35% ?? ???????? ?? ???????????? ??????? ? ??????????? ?? ??????????.
????? ?????????????? ???????????:
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