云南开放大学机械设计基础(20秋)形考任务8答案

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发表于 2021-3-26 18:46:44 | 显示全部楼层 |阅读模式
机械设计基础(20秋)形考任务8
1.[问答] 某传动装置中有一对外啮合渐开线标准直齿圆柱齿轮,大齿轮已损坏,小齿轮的齿数z1=24, 齿顶圆直径da1=78mm, 中心距a=135mm, 试计算大齿轮的主要几何尺寸及这对齿轮的传动比。
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    答:——78=m(24+2)<br>m=3 mm<br>a=m/2(z1+z2) mm<br>135=3/2(24+z2)<br><img class="kfformula" src="data:image/png;base64,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" data-latex="{z}_{2}">=66<br><img class="kfformula" src="data:image/png;base64,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" data-latex="{d}_{a2}">=3×66+2×3=204 mm<br><img class="kfformula" src="data:image/png;base64,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" data-latex="{d}_{f2}">=3×66-2×1.25*3=190.5 mm<br>i=66/24=2.75<br><br>——

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