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Bải giảng Chi tiết máy     !"#$%&'('$#)*+,-%./" a. Cấu tạo  !"#$ %&'&(!)*+*,-./-.0)1-2&*3) 4+56)#$%&'& 2. Nguyên lý làm việc 78!9):;<) =)>?8&7+  !?)@5A6AB6C/3=-:; =): /,#/3=-):)D-'& 012345#$6 #789: 1. Ưu đim E*+)F)A66:G1<)& EH03I3G=J@1)406K EH0*)LGMGMN6<$IK EO)L6*+PQRDGM/6*< !6SAD3?/?)K ETC:A8,A !IJK E*+48U+5AD)A& 2. Như!c đim E(V?88!3)0)130< !8! )LW1))A)K EX.<YB) !30I8!3)6</ JK E*)D3)8! )L  3) !3=-,D6SAWW <K EZ0)1 !)[6Y/& 3. Phạm vi sử dụng E\06 !+)FA*3?:)A B)GBM-]^__ `- Chương 4. Truyền động xích  Hình 4.1 Hình 4.2 Bải giảng Chi tiết máy E060GB(]__3a E  \[  6<    bi ≤  3) ( )  b `v m s= ÷ K  !   "i ≤  3)  ( ) b ^ `v m s= ÷ K  )L  6 ( ) _&P^ _&Pc η = ÷ & \GM43:):-G1)L .?)#2- 0000d':0)L-:/?)d 0'! /"-%.4,#$4;*/" 0'! /"-%.4, \42e         GM  ) !:8) f  7<    8/#O$%&"'& :  :    GM    5  g- :g- =)<8*% !;&:: GMg- =)<" !;!)&<" ! <8*%!3=-?8 +*+h &8/ ^8;-8J =)<8*%+)? V/b !< 8*  %&  i<  b  )+  )j  )D  )L /& 7<8/GM), k*&7GMD !:,0*& E7<*3DG1C G    <    8/  G 30 * 8/^& 7 GM D =):-): G1<)l& E7/#O$%&%'3=-? 8GM!)S< $A)D-U&m9); *):8;-g- ,<&H?/?)/8=1)6 =)<8/*4 3G=&n):!/1<8/&7/GM), k*& \:8),<8/GM4)1?&7<[ 4::1)?8! )L =)<-#f`6'&7/GM 43)Z?)@8=,Z3G=J@&\G1! D$!<8/& 00;*/" o*Z)<:/[3:W-Z !/&H G= !),/-A !8)$%&^8!8/$ Chương 4. Truyền động xích  Hình 4.3 Dây xích ống con lăn Hình 4.4 Bộ truyền xích răng Hình 4.5 c ) t t Bải giảng Chi tiết máy %&^8!/&X.8)L8!GB8!g-g-M-3) 63))00);^_pb_Oq& r),8/:*:3    #$%&^' ! " #$%&^'&s3G=GMh2),k,:6<8)L+ :#$%&^'GM?06<& oGB3 V) 6) 6)  c t t d Z ϕ π = = #' X=)  Z π ϕ = rG=#' ti</ < =7>?@")*+,-%./" <AB/")*9C%/" ErG=#'8!06<D&rG=!8=3?/ 8C!/G  !)&s*3) =)< $@G=J& Eo+/3?/?)*+/6<u#<8/'v/) #/' ErG=GM),k*3):2?),k& <0D>-E4;*/" E\0GBt  ]t  D6</J$V# $*?88=' !?)@wG  /& Chương 4. Truyền động xích " Bải giảng Chi tiết máy Es*D6</J&\0GB3)  `v m s≥ $ ) cZ ≥ <) =) 8/ !  <  !  ) PZ ≥  <) =) / 3)   `v m s<  $ ) ^ cZ = ÷ & \),3)/t  $6</8=t  w/8,8!j 3J)3)V& Eo+:.3)V-?)D6</8=&  __ _Z ≤ ÷ #<) =)<8/'  _ %_Z ≤ ÷ #<) =)/'& Ei</,826<8l $3)*9)/6x8Z8GM/3=- =)?:;G ./6xV1& <<!F-:G EH?:A#y'3?:)F)e)&(**?GW =)*0 !6C  & EH):3?:A-?)/Y !)3)L*0 _  _ α ≥ & H))z"$ ( )   ) "_ ^_  e e d d A + = + ÷ #' H)){"$   ) P &  _ e e d d i A + +     =  ÷  ÷     #' X=)  2  2 GB3 V[ !& E(Gy  30h:Q_+:  & s*M-8|8!@y}#"_p^_' E7:)!)T T}&7 X=)7i<; <D>H/" Lưu ý :(,hV 6<;7!6<,& Ei3)6<;-?):8)3?:A>0Y         Q& %    Z Z Z Z Z Zt A X X π     + + −       = − + − −  ÷  ÷  ÷           Eo+:30h:/-?))?3?:A8GM ( ) y  ___ ___% y∆ = ÷ @-%.4,/" Chương 4. Truyền động xích % Hình 22.11       &   Z Z Z ZA t X t A π + −   = + +  ÷   Bải giảng Chi tiết máy IJ>#$K7>-%. a. Vận tốc và tỷ số truyền tức thời EX$/3=- =):/2$):, .< ! N6<I)2B))& E~B))+g?8y/3=- !?8r6;- !3=- =)/& E\)y .<L<);    &v r ω = GM-e8!)!-Z *!-Z>  8! .< ! O$%&b    &6 & &6 xich v v r β ω β = = #'  =)   Z Z π π β − ≤ ≤ mv4  ω 30I)G  I) $* β I)& 7g,*   & &6 xich v r ω γ = #' X=)   Z Z π π γ − ≤ ≤ \5#' !#'      & 6 6 & r r ω β ω γ ⇒ = o)!YJ> .<*  ω I)23• vZ const=  ω     ω ω =⇒ i I)& o+)?=+I)!Z/6</#D 8!/t  '& mv3:D8)!):8!)6<G=w)U- h1& b. Vận tốc và tỷ số truyền trung bình EX.<!8=!V?)@ !)D/&\GB @ .< ]^`6D0)1< }#"_p"^'`6&~e[Z: .<$ & & b_&___ tb Z t n v = #`6' X=) ti</ i< Vh# `-' G=#' Es .< V$)>,*\[6< $ )}     Z Z n n = E(,@ Qi ≤ & Chương 4. Truyền động xích ^ Bải giảng Chi tiết máy 0I*4J6)*+F'./"L#$!ELB6-E4;*/" EH)?8r !3=- =)/ .<r8! B A v v= uur uur *-G1 0 * =):3€yV .<)+  8!  C v uur *-G1 0* =)€* 6)  & Em9)8Z !3=- =) ;)8Z  3)6;- !3=- #;G==)' !3) ! 3=-& <MN9:-!+,-%./" ETC V•8),L =)8C,:‚   !:‚     F F P − = ETC/8e   h‚ = h  H<)8GMg3`  .< V`6 ETC/Z@8GM:C _ & & & f m F k a q g = )!)C>3?:A )<@GB 3 ƒ L6<-A „ 3 ƒ }b3)> 3 ƒ }"3)>),]%_ _ 6 =)-G1 3 ƒ }3)…Y E _ ‚‚‚ += &*+8ZU‚  }• ETC:A8,ATC:A8,A:8C)D-D 8C8e !8C@8GM?ee&TC!GMZU 20Y & t R k P = X=) 3  L6<gD:A@8GM8),A& †3  }^H)v>v),]%_ _ †3  }H)v…Yv),{}%_ _ O9 PQR&"!#$@#J' O9 P#$R&"! &oYe:B)308! )LGMF&7YJ) h:?)v:<)g-)F: =)<J& Chương 4. 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Truyền động xích c Bải giảng Chi tiết máy \*)3)L [ ] & & z n N N k k k ≤ }{ [ ] & & & z n k k k N N≤ ov & & t z n N k k k= 06:& Ei)3)L [ ] t N N≤ \6< [ ] N ?5)3)L,@6*3)+)3)L (  <) =)G=G1Y& E(D4<8/*ˆu)3)L@G6 Š&‰NzN t ≤ K‰(Š‹06-g-u& T057>'W#*4J6)*H/"-!,C% E(D*)$ V;6x <8Z  o+??8eZ3)+6<8Z  -g- B)))e [ ] & & %& % b_&___ & ^ ___ Z nt Z nv u u X t L X = = = ≤ X=)‰Ši<8Z  -g-8/B)))e ?& XA$J6Y9: Chương 4. Truyền động xích Q . !),/-A !8)$%&^8!8/$ Chương 4. Truyền động xích  Hình 4.3 Dây xích ống con lăn Hình 4.4 Bộ truyền xích răng Hình 4.5 c ) t t Bải giảng Chi tiết máy %&^8!/&X.8)L8!GB8!g-g-M-3) 63))00);^_pb_Oq& r),8/:*:3    #$%&^'. ÷ @-%.4,/" Chương 4. Truyền động xích % Hình 22.11       &   Z Z Z ZA t X t A π + −   = + +  ÷   Bải giảng Chi tiết máy IJ>#$K7>-%. a. Vận tốc và tỷ số truyền. =)< $@G=J& Eo+/3?/?)*+/6<u#<8/'v/) #/' ErG=GM),k*3):2?),k& <0D>-E4;*/" E0GBt  ]t  D6</J$V# $*?88=' !?)@wG  /& Chương 4. Truyền động xích " Bải giảng Chi tiết máy Es*D6</J&0GB3) 

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