Chap6-3 - 6-7(Transmission of modified gear 1 1 z zmin m 2...

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6-7 变变变变变变 § (Transmission of modified gear) 变变变变变变变变 1 变变变变变变变变 变变变变变变变变变 : z z min ; 1) 2) 变 变变变 变变变变变变 ; ′ ≠ = + a a m Z Z 2 1 2 ( 3) 变变变变变变变变变变变变变变变 变变变变变变变变变变
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2 变变变变变变变 变变变变变变变变变变变变变 xm变变变 x- - 变变变变变 变变变变变变变变变变变变变变变变变 变变变变变 x>0 变 变变变变变变变变变变变变变变变变变 变变变变变 x<0 变 变变变变变变变变变 变变变变变变变变变 x=0 变变变变变变变变 变变变变变变变变 变变 变变 变变变变变 1 变变变变变变 变变变变变 2 变变变变变 s =e 变变变变 m h c a , , , α
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3 变变变变变变变 α P P B B Q Q N N O O x m min h m a r b r ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) z z < min xm h NQ a ≥ - ∴ ≥ - xm h m mZ a 2 2 sin x h Z a ≥ - sin 2 2 h h m NQ PN r a a = = = , sin sin 2 Z h h Z a a min min sin ; sin = ∴ = 2 2 2 2 x h Z Z Z a min min min = -
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4 变变变变变变变变变 1) 变变变变变变变变变变变变变变变 变变变 m h c Z a , , , , α 变变变 r r P b , , 变变变 2) 变变变变变变变变变变变变变 s e r r h h f a f a , , , ,( , )
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(1) 变变变变变变 s 变变变 e α P P B B N N O O xm h m a r b r xm a c b a b xm c s m xmtg = + π 2 2 e m xmtg = - 2 2 (2) 变变变变 变变变 h a h f h h c m xm f a = + - ( ) * ) ) ) ) ) ) ) ) ) ) h h m xm a a = +
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3 变变变变变变变 变变变变变变 r a r f r r h r h c x m f f a = - = - + - ( ) ) ) ) ) ) ) ) ) ) ) r r h r h x m a a a = + = + + ( ) 4) 变变变变变变变变变变变变变变
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o r a r r b r i s i ϕ i s θ θ i A C B B C A 4) 变变变变变变变变变变变变变变
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变变变变变 s CC r i i i = = ϕ ϕ θ α i i i BOB BOC s r s r inv inv = ∠ - = - - = - - 2 2 2 ( ) ( ) o r a r r b r i s i i s A C B B C A θ θ i ∴ = - - s sr r r inv inv i i i i 2 ( ) 4) 变变变变变变变变变变变变变变
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1 变变变变变变变变变变变变变变变 变变变变变变变 ) ) m m m 1 2 1 2 = = = = , ; [ ]. α ε 2 变变变变变变变变 变变变变变变 { 1) . 变变变变变 2) . 变变变变变变 变变 变变变变变变
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1) 变变变变变变变变变变 s e s e 1 2 2 1 ' ', ' ' = = ) ) P =s s 1 1 ′ + = + = + ' ' ' ' ' ' e s e s 1 2 2 2 ( a) s i = + π α m x mtg i 2 2 r r P P i i i ' cos cos ( , ) = = = 1 2 变变变变变变变变 a) 变变变变变 s i ' ' '( ) = - ′- s r r r inv inv i i i i 2
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inv x x Z Z tg inv ′ = + + + α 2 1 2 1 2 ( ) 变变变变变变变变变变变变 变变变变变变变变变变变变 变变变变变变 x x a a 1 2 0 + ≠ ′ ≠ ′ ≠ ) ) ) ) ) ) ) ) ) ) ) ) , α α 变变变变变变变变变变变变变 ′ ′ = a a cos cos α α
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) - =ym,) y= - m a a a a y= - m = + - a a Z Z 1 2 1 1 2 ( )( cos cos ) α α y y - - - - - - 变变 变变 变变变变变变变变变变变变变变 变变变变变变变变变变变变变变 y a a 0, ) ) ) ) ) ) ) ) ) y a a = ′ = ) ) ) ) ) ) ) ) ) y a a < ′ < ) ) ) ) ) ) ) ) )
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Chap6-3 - 6-7(Transmission of modified gear 1 1 z zmin m 2...

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