Chap6-2 - 6-4 ( Meshing transmissions of involute spur gear...

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k 2 k 1 b c d N 2 r b2 § §6-4 渐渐渐渐渐渐渐渐渐渐渐渐渐 ( Meshing transmissions of involute spur gear ) 渐渐渐渐渐渐渐渐渐渐渐渐渐渐渐 渐渐渐渐渐 K K ab cd p p b b 1 2 1 2 = = = 即 即 渐渐渐渐渐渐渐 渐渐渐渐渐渐渐 : : m m m 1 2 1 2 = = = = α α α
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渐渐渐渐渐渐渐渐渐 1 渐渐渐渐渐渐 1) 渐渐渐渐渐 渐渐渐渐渐 { a. 渐渐渐渐渐渐渐渐渐 渐渐渐渐 b. 渐渐渐渐渐渐渐渐渐 渐渐渐渐 a. 渐渐渐渐 : ( ) c c m = 渐渐渐渐 a r c r a f = + + 1 2 ∴ = + = + a r r m Z Z 1 2 1 2 2 ( ) r a 2 r a 1 c O 1 O 2 a ϖ 1 2 r f 2
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b. 渐渐渐 : 渐渐渐渐渐渐渐渐渐 ′ = ′ ′ = ′ s e s e 1 2 2 1 , 渐渐渐渐渐渐渐 s s e e m 1 2 1 2 2 = = = = π 渐渐渐渐渐渐渐渐渐渐渐渐渐渐渐渐渐渐渐渐 ∴ = ′ = ′ r r r r 1 1 2 2 , ′ = ′+ ′= + = + = a r r r r m Z Z a 1 2 1 2 1 2 2 ( ) a ϖ 1 P r 2 ' r 1 ' 2
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渐渐渐渐渐渐渐渐渐渐渐渐 渐渐渐渐渐渐渐渐渐渐渐渐渐 渐渐渐渐渐渐渐渐渐渐 渐渐渐渐渐渐渐 渐渐渐渐渐渐渐 a r r m Z Z = + = + 1 2 1 2 2 ( )
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2 渐渐渐渐渐渐 渐渐渐渐渐渐渐渐 渐渐渐 α ϖ 1 2 P r 2 ' r 1 ' N 1 N 2 V p o 2 o 1 即 :即 即 即 即 即 即 即 即 即 即 即 即 即 即 即 即 即 即 即 P N N 1 2 渐渐 渐渐 渐渐渐渐 渐渐渐渐 渐渐渐渐渐渐渐渐渐渐渐渐渐渐 渐渐渐渐渐渐渐渐渐渐渐渐渐渐 ′ = ′ = r r , 渐渐渐渐渐渐渐渐渐渐渐
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3 渐渐渐渐渐渐渐渐渐渐渐渐渐 渐渐渐渐渐渐渐渐渐 ′ = ′ = ′ = α , , r r 渐渐渐渐渐渐渐渐渐渐 ′ ≠ ′ ≠ ′ ≠ , , r r 渐渐 r r r b = = ′ ′ cos cos ∴ = ′ ′ a a cos cos
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4) 渐渐渐渐渐 i r r r r r r Z Z b b 12 1 2 2 1 2 1 2 1 2 1 = = = = = ϖ 2 渐渐渐渐渐渐渐渐 ′ = r r ′ = α p N O V 渐渐渐渐渐渐渐渐渐 ′ = r r ′ = V r = ⋅ ϖ 渐渐渐渐渐渐 渐渐渐渐渐渐渐渐渐 渐渐渐渐渐渐渐 渐渐渐渐渐渐渐渐渐渐
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Chap6-2 - 6-4 ( Meshing transmissions of involute spur gear...

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