【20160417】Profile-shifted gears+ y* b, `# \) n w1 q6 m
& |* N }. r d+ m/ UTo avoid interference on small pinions, the tooth form can be changed from the standard.
+ d# p s: ?/ ~- e- _+ r p" J, O为避免小齿轮的干涉问题,齿的形状可以从标准型作适当转化。
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' r: N" l5 _- M: j0 ^) f: MStandard gears:
/ T( G3 \. A C- \3 _- p' V) q( [4 h" Lapinion= agear1 M' R( x4 x: h) m4 j# w
标准齿轮:大轮小轮齿顶高相等. X" d1 Q& I2 p# p- `
8 e7 ~, d/ Y, S ?( k# \Profile-shifted gears:8 k9 d0 u. N9 a4 \# a
apinion> agear
3 I! T7 j6 ^( b9 s( c8 ]* C5 q" g0 S变位齿轮:小轮齿顶高大于齿根高8 S! Q, s: H# C# w2 {
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The AGMA defines addendum modification coefficients, x1 and x2.
' X: y! @4 Z7 o4 z8 Ux1>0: is applied to increase the pinion addendum
/ ]) R' I2 I/ n4 rx2<0: is applied to decrease the gear addendum
" V; m+ y( f+ m& M7 ]/ M. }/ j9 mX1提高小轮齿顶高,X2提高大轮齿顶高。
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0 B9 A- ]! v; |% ^Objective
) i8 E4 X3 e- v/ k# R; DTo shift the pinion addendum circle outside its base circle and eliminates the noninvolute portion of pinion tooth below the base circle.$ o5 L$ D1 g7 V& R
The standard coefficients are ±0.25 and ±0.50* Z3 C# o* [+ f+ n. H. W/ T. m6 p5 Q
目标! [4 z* b9 ]8 |+ S; I, |8 |
改变小轮基圆外的齿顶高,减小基圆内非渐开线部分的齿。
- q |1 w+ @ S3 l. K1 b' S* s标准系数正负0.25和正负0.5.5 R/ ]7 h f5 u* V& R
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