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Mechanical Engineering QUESTION #2469
Question 1
The wear load \(F_w\) on a gear tooth (Buckingham equation) depends on which key gear geometry parameter related to the smaller gear?
  • \(F_w \propto r_g^2\) (gear pitch radius squared)
  • \(F_w = d_p B K Q\) where \(d_p\) is the PINION pitch diameter✔️
  • \(F_w \propto N_p/N_g\) (tooth ratio)
  • \(F_w \propto P_d^2\) (diametral pitch squared)
Correct Answer Explanation
Buckingham's wear load: \(F_w=d_p B K Q\), where \(d_p\) is the pinion pitch diameter, \(B\) is face width, \(K\) is the stress-fatigue factor, and \(Q=2N_g/(N_p+N_g)\) is the ratio factor.