花鍵跨棒距的計算

1、漸開線內(nèi)花鍵棒間距及反算齒槽寬參數(shù)名稱代號偶數(shù)齒參數(shù)值奇數(shù)齒參數(shù)值求反漸開線函數(shù)標準公式；（近似公式模數(shù)m22.445已知漸開線函數(shù)值為inv a ,求出其角度齒數(shù)z2419a k=ACOS(sin( a (k-1) /(inv a + a 0)分度圓壓力角a2030a 0=(3*inv a )A(1/3)分度圓壓力角的弧度值RAD0.349065850.523598776按上述公式計算出a 4后，用公式DEG分度圓漸開線函數(shù)值inv a =tan a - a0.0149043840.053751494示例變位系數(shù)x00.8已知漸開線函數(shù)值為inv a =0.0149043量棒中心所在圓的壓力

2、角漸開線函數(shù)值inva n=inv a -Db/m*z*cos a + n /(2*z)+2*x*tna /z0.002757880.062625523先算出 a 0= (3*0.0149043838673364)量棒中心所在圓的壓力角a n11.5254952831.43933217inv a =0.0149043838673364量棒中心所在圓的壓力角弧度值RAD (=a n*PI()/180)0.2011578410.5487佃861a 0=0.354931949138120000基圓直徑Db=z*m*coa45.105245840.23121013a 1=0.3491126192766

3、70000量棒直徑Dr3.53a 2=0.349065853403425000量棒中心所在圓的壓力角余弦值COS an0.9798358940.853192936a 3=0.349065850398865000奇數(shù)齒所用角的余弦值cos(90/Z)0.996584493a 4=0.349065850398866000跨棒距M 偶最小=m*Z*cosa /cos a n-Dr 1奇最小=m*Z*cosa /cos a n*cos(90/z)-Dr 42.5334695843.99265369最大棒間距Mmax42.7543.99最小棒間距Mmin42.5543.89任意壓力角弧度值a max*0

4、.2229539290.558375507a min*0.2029106760.545128275任意壓力角漸開線函數(shù)初值inv a max*0.0037691940.066313303inv a min*0.0028314370.06129385實際齒槽寬最大值Emax3.1901330824.047660475實際齒槽寬最小值Emin3.145120743.814481791漸開線外花鍵棒間距及反算齒厚參數(shù)名稱代號偶數(shù)齒參數(shù)值奇數(shù)齒參數(shù)值模數(shù)m21.5齒數(shù)z1815分度圓壓力角a3030分度圓壓力角的弧度值RAD0.5235987760.523598776分度圓漸開線函數(shù)值inv a =t

5、an a - a0.0537514940.053751494變位系數(shù)x00量棒中心所在圓的壓力角漸開線函數(shù)值inva n=inv a +Dr/m*z*cos a - n /(2*z)+2*x*tna /z0.0386538880.120953907量棒中心所在圓的壓力角a n27.0807656138.26897814量棒中心所在圓的壓力角弧度值RAD (=a n*PI()/180)0.4726485240.66791967基圓直徑Db=z*m*coa31.1769145419.48557159量棒直徑Dr2.253.35量棒中心所在圓的壓力角余弦值cos an0.8903656820.785

6、111825奇數(shù)齒所用角的余弦值cos(90/Z)0.994521895跨棒距M 偶最大=m*Z*cosa /cos a n+Dr 1奇最大=m*Z*cosa /cos a n*cos(90/z)+D)r 37.2658537728.03288845最大棒間距Mmax37.2627.988最小棒間距Mmin37.227.904任意壓力角弧度值a max*0.4723214060.665606758a min*0.4689499840.661237295任意壓力角漸開線函數(shù)初值inv a max*0.0385683410.119521439inv a min*0.0376956660.11685209頭際齒厚最大值Smax3.1385156032.323965959頭際齒厚最小值Smin3.1070993012.263905605求反漸開線函數(shù)標準公式；(近似公式如左框的方法)已知漸開線函數(shù)值為inv a ,求出其角度a值k=ACOS(sin( a (k-i) /(inv a + a o)a 4后，用公式DEGREE&a 4)就可得角度值a =0.0149043838673364,求出其角度 a 值a 0= (3*0.0149043838673364 ) A(1/3)角度