圆弧齿同步带轮选择与计算
原动机为电动机,额定功率220w,转速=10000r/min 1轴的转速为9286.n1该机器每天工作小于4个小时,要求中心距65mm左右
P1) 确定
设计
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功率 由表6.1-62查得工作情况系数K,1.1,设计功率dA
P,KP,1.1,0.22,0.242KW dA
PP2) 选定带型节距 根据和n由图6.1-22选取5M型圆弧齿同步带db1
p,5mm b
3) 小带轮齿数z 由z,z,z查表6.1-76、6.1-84得z取26 111min11min
zp26,51b4) 小齿轮节圆直径d d,,mm,41.38mm 11,,
n100001z,iz,z,,26,28z5) 大带轮齿数 2112n93002
zp5,282bdd,,mm,44.56mm6) 大带轮节圆直径 22,,
10000,41.38,,v7) 带速 v,,21.66m/s60000
a8) 初定轴间距 0
0.7(d,d),a,2d,d,,,12012
0.7,41.38,44.56,a,2,41.38,44.56,,,, 0
60.16,a,171.880
a,65mm取 0
L9) 带长(节线长度) 0
2,(d,d)(d,d)1221L,2a,,0024a0
2,(41.38,44.56),,41.38,44.56,(2,65,,)mm 24,65,(130,134.93,28.41)mm,293.34mm
L,295mm按表6.1-73选取标准节线长度 p
L295p10) 带齿数Z Z,,,59P5b
22,,11) 实际中心距a a,M,M,d,d,,32/1621,,,,
M,4L,2,(d,d),4,295,2,,85.94,640.3mm p21
22,, ,,?a,640.3,640.3,3244.56,41.38/16,80.02mm,,,,12) 安装量、调整量 查表6.1-81 得 ISI,1.02mm、S,0.76mm
a,a,S,80.02,0.76mm,80.78mmmax a,a,(I,19.1),80.02,20.12mm,59.9mmmin
d,d,,21z13) 啮合齿数 z,ent0.5,z,ent12.83,,mm16a,,
z,12.83,614) 啮合齿数系数K 当 所以K,1 mZZ
PP,1.484kW15) 基本额定功率 查表6.1-76得 00
pb1.14b16) 要求带宽 bb,sss0KKPLZ0b,6mmK,0.8 (查表6.1-77) (查表6.1-80) s0L
1.140.22 ?b,6,1.2mms1,0.8,1.484
b,按表6.1-72取标准带宽9 f
F,1250P/v,1250,0.22/21.66N,12.7NF17) 紧边张力 1d1
F,750P/v,750,0.22/21.66N,7.62NF 松边张力 2d2
,,F,KF,FF18) 压轴力 QQF12
KK,0.98 由图6.1-23查的 FF
,,,,?F,KF,F,0.98,12.7,7.62N,20.32N QF12
19) 作用在轴上的力
P0.22dF,K,1500,0.98,,1500,14.93N rFv21.66