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1、积累公差资料,1,积累公差和几何公差,积累公差资料,2,什么是积累公差？,10.05,槽宽的最小值 W,W= 1.05 x 5 = 5.25 ?,积累公差资料,3,什么是公差？,图纸公差设计要求值,；图纸公差大的情况下,；图纸公差小的情况下,实际零件可以用更小的偏差进行制作,实际零件可全数检查选择分类,和的积累公差不同,积累公差资料,4,公差的公差范围为的情况下,前提条件零件的尺寸偏差正态分布母集合,N块板的标准偏差,板的标准偏差,积累公差（）,前面的板的问题积累公差,SRSS(Square Root Sum of Squares),积累公差资料,5,不能保证正态分布的情况下,前提条件虽不能保
2、证正态分布，但在公差范围内,W=k(Wi2),W :积累公差：零件公差：系数Wimax:零件公差的最大值,k,=2Wi（Wimax+Wi）,同样公差的零件有N个的情况下,W=k Wi(n)k=2n(1+n),前面的板的问题k=2x5/(1+5)=1.667W=1.667x0.05x5=0.186（0.186）,积累公差资料,6,系数K的值,零件个数,有着同样公差的零件的积累公差系数,零件的公差的差若大的情况下，接近1.0。变速箱的设计以K=1.5来计算,积累公差资料,7,积累公差计算EXCEL,1ST SPEED GEAR END PLAY,零件名称,图纸尺寸,中间尺寸公差,尺寸,公差上限值,
3、公差下限值,中间尺寸,公差,OUTPUT SHAFT,29,0.05,0,29.025,0.025,HUB 1-2,1.9,0.03,-0.03,1.900,0.030,SNAP RING,0,0.05,0,0.025,0.025,GEAR 1ST,-30.8,0,-0.05,-30.775,0.025,合,SRSS,0.175,0.079,計,积累公差,0.105,判定,(0.05),积累公差资料,8,计算例,隙間,间隙,29,+0.05 0,1.9,0.03,30.8,0-0.05,选择调整00.05,积累公差资料,9,计算问题,隙間,隙間,29,+0.05 0,1.9,0.03,30.8
4、,0-0.05,選択調整00.05,3,0-0.2,1.45,0.1,25.4,10.4,0-0.05,20.3,0.04,0-0.05,25.4,0-0.05,19.3,0.04,1.45,0.1,0-0.2,3,17.6,0-0.1,3档,4档,积累公差资料,10,计算问题演练,隙間,29,+0.05 0,1.9,0.03,30.8,0-0.05,選択調整00.05,零件名称,图纸尺寸,尺寸,公差上限值,公差下限值,中间尺寸,积累公差,积累公差资料,11,间隙调整,隙間,隙間,29,+0.05 0,1.9,0.03,30.8,0-0.05,選択調整00.05,:SPACER厚度：SPACE
5、R公差:空间s：调整间隙n:SPACER个数,n=(Tmax Tmin)/(Smax-Smin-2t) n为整数，计算必要的个数和厚度,积累公差资料,12,计算问题解答,隙間,29,+0.05 0,1.9,0.03,30.8,0-0.05,選択調整00.05,积累公差资料,13,间隙调整,隙間,隙間,29,+0.05 0,1.9,0.03,30.8,0-0.05,選択調整00.05,SIM是施加0.050.12 BRG预紧力进行调整,24,0.05,119,0.05,12.558,+0.2 0,12.558,+0.2 0,102.88,0.03,SIM,CASE BRG孔深度240.05 HO
6、USING孔深度1190.05BRG组装宽度12.558+0.2,0DIFF CASE宽102.880.03,积累公差资料,14,间隙调整,隙間,隙間,29,+0.05 0,1.9,0.03,30.8,0-0.05,選択調整00.05,积累公差资料,15,形位公差（几何公差）的种类,29,+0.05 0,1.9,0.03,30.8,選択調整00.05,积累公差资料,16,形位公差（几何公差）的种类,29,1.9,0.03,30.8,選択調整00.05,积累公差资料,17,形位公差（几何公差）的种类,29,1.9,0.03,30.8,积累公差资料,18,直线度,29,1.9,0.03,30.8,
7、积累公差资料,19,平面度,29,1.9,0.03,30.8,积累公差资料,20,圆度,29,1.9,0.03,30.8,积累公差资料,21,圆柱度,29,1.9,0.03,30.8,积累公差资料,22,线轮廓度,29,1.9,0.03,30.8,积累公差资料,23,面轮廓度,29,1.9,0.03,30.8,积累公差资料,24,平行度,29,1.9,0.03,30.8,积累公差资料,25,平行度,29,1.9,0.03,30.8,积累公差资料,26,平行度,29,1.9,0.03,30.8,积累公差资料,27,垂直度,29,1.9,0.03,30.8,积累公差资料,28,倾斜度,29,1.9
8、,0.03,30.8,积累公差资料,29,倾斜度,29,1.9,0.03,30.8,积累公差资料,30,位置度,29,1.9,0.03,30.8,积累公差资料,31,同轴度,29,1.9,0.03,30.8,积累公差资料,32,同心度,29,1.9,0.03,30.8,积累公差资料,33,圆周跳动公差,29,1.9,0.03,30.8,积累公差资料,34,全跳动公差,29,1.9,0.03,30.8,积累公差资料,35,最大实体公差,29,1.9,30.8,为了方便零件制作的公差也称作BONUS公差,20,0,-0.1,0.2,20.2,若为20，垂直度为0.2若为19.9，垂直度也可以是0.3,积累公差资料,36,问题,29,1.9,30.8,这个最大实体公差是什么意思？,12,0,-0.2,