国开在线答案
- 2022-09-12 [简答] 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。求：（1）齿轮的模数。A．2mmB．2.5mmC．3mmD．4mm（2）分度圆直径。A．50mmB．75mmC．100mmD．200m（3）齿根圆直径。 A．90mmB．92mmC．96mmD．108mm （4）齿厚。A．3.14mm B．6.28mm C．8mmD．12.56mm
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