【单选题】【消耗次数:1】
某传动装置中有一对渐开线。标准直齿圆柱齿轮(正常齿),大齿轮已损坏,已知小齿轮的齿数z1=24,齿顶圆直径da1=78mm,中心距a=135mm,齿顶高系数ha*=1,顶隙系数c*=0.25。大齿轮的模数( )。
1mm
1.5mm
2.5mm
3mm
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【单选题】 某传动装置中有一对渐开线。标准直齿圆柱齿轮(正常齿),大齿轮已损坏,已知小齿轮的齿数z1=24,齿顶圆直径da1=78mm,中心距a=135mm,齿顶高系数ha*=1,顶隙系数c*=0.25。大齿轮的齿顶圆直径( )。
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【单选题】 某传动装置中有一对渐开线。标准直齿圆柱齿轮(正常齿),大齿轮已损坏,已知小齿轮的齿数z1=24,齿顶圆直径da1=78mm,中心距a=135mm,齿顶高系数ha*=1,顶隙系数c*=0.25。大齿轮的分度圆直径( )。
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【单选题】 某传动装置中有一对渐开线。标准直齿圆柱齿轮(正常齿),大齿轮已损坏,已知小齿轮的齿数z1=24,齿顶圆直径da1=78mm,中心距a=135mm,齿顶高系数ha*=1,顶隙系数c*=0.25。这对齿轮的传动比( )。
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【单选题】 一渐开线直齿圆柱标准齿轮,已知齿数z=25,齿距p=12.566mm,压力角a=20。,齿顶高系数ha*=1,顶隙系数c*=0.25。齿根圆直径( )。
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