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目次へ ウォーム歯車の計算 |
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ウォーム歯車の計算 |
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減速比=21.5 |
圧力角 |
軸方向 モジュールm |
ピッチ円径d0 |
歯数(条数) |
回転数
n |
歯幅 B |
材料 |
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Z |
rpm |
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1 |
ウォーム |
20° |
4 |
38 |
2 |
750 |
- |
SUS304_ステンレス |
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9 |
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SUS304 |
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2 |
ホイール |
172 |
43 |
34.9 |
30 |
MC901_ナイロン |
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19 |
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MC901 |
6 |
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4 |
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●ホイール曲げ強さによる接線力 |
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●トルク |
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F=kx*σb*Be*tn*y=1*7*24*12.296*0.125
= 258.2 [N] |
T=F*d02/2000=258.2*172/2000=22.21[N-m] |
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FALSE |
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σb=ホイールの許容曲げ応力= 7
[N/mm2] |
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7 |
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Be=ホイールの有効歯幅= 0.8*B= 24
[mm] |
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tn=ウォームの歯直角ピッチ |
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tn
=px*Cos(γ)=12.566*Cos(11.8887)=12.296 [mm] |
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38 |
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y=歯形係数= 0.125 |
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30 |
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kx=正逆転係数= 1 |
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●ホイール歯面強さによる接線力「バッキンガムの式] |
●トルク |
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F=ε*d02*Be*K=1.25*172*24*0.8
=1000000 [N] |
T=F*d02/2000=1000000*172/2000=86000[N-m] |
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d02=ホイールのピッチ円径= 172 [mm] |
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Be=ホイールの有効歯幅= 0.8*B= 24
[mm] |
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0.8 |
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K=耐磨耗係数= 0.8 [N/mm2] |
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ε=進み角を考慮した係数= 1.25 |
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●伝達動力 |
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P=F*v/1000=258.2*0.31/1000=0.08
[kW] |
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v=周速=π*d02*n2/
60=π*0.172*34.9/60=0.31[m/s] |
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●効率 |
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η=効率=100-i/2=100-21.5/2=89
[%] |
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i=減速比=z2/z1=43/2=21.5 |
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