... =35,6 +2( 1+0,5-0,038).1 ,25 =39 ,25 mmda2 =20 4,4 +2( 1+0,5-0,038).1 ,25 =20 8,05mmĐường kính đáy răng:df1 ==35,6- (2, 5 -2. 0,5).1 ,25 =33, 725 mmDf2 =20 4,4- (2, 5 2. 0,5)1 ,25 =20 2 525 mm 2. 2)BỘ TRUYỀN CẤP CHẬM:1)Chọn ... -1969,79<0 chi u ngược lạiTính đường kính trục:34, 423 26373,440 120 .75, 027 ,9954 727 ,154798.75,0 22 222 2=++=++=TMMMyxPtdB (Nmm).96 ,27 35 529 5 ,22 554 027 ,154798 22 =+=ttdBM79,4776 024 2,436996.75,076 ,29 134175,0 22 22 =+=+=zxPtdCMMM(Nmm)37,50410573,440 120 .75,078 ,29 134 127 ,154798.75,0 22 222 2=++=++=TMMMyxttdC73,38115573,440 120 .75,0.75,0 22 ===TMtdD(Nmm).Ta ... .Muc =1,5. 26 ,28 2546 625 ,566545,179643 22 =+TMax = 1,5.143335 ,2 =21 50 02, 8(Nmm).→ σ = 14,4440.1,0 26 ,28 25463=(Mpa).τ = 59,3340 .2, 08 ,21 50 02 3=→ σtd = 02, 7359,33.314,44 22 =+ (Mpa).Vậy...