Douglas Williams

Can someone please help me with the above question?

The number of teeth in the dial gear of the combination lock system is 40

The number of teeth in the stepper motor gear of the combination lock system is 10

The number of teeth in the dial-stepper connecting wheel of the combination lock system is 80

1) What are the gear ratios between the motor/wheel and motor/dial?

2) If the dial is turned one complete revolution, how many turns do you get on the stepper motor shaft?

3) What is the number of steps in the stepper motor for one complete revolution of the dial?

Attempt on question 1

Ratio between motor/wheel = 10/80 = 0.125

Ratio between motor/dial = 10/40 = 0.25

Hence ratio between motor/wheel and motor/dial = 0.125/0.25 = 0.5

Attempt on question 2

40/10 = 4 turns

Can someone please check if these answers are right? Also what's the answer for question 3? I don't really have an idea how it could be calculated.

The number of teeth in a dial gear of a combination lock system is 50. The number of teeth in the stepper motor gear of the combination lock system is 12. The number of teeth in the dial-stepper connecting the wheel of the combination lock system is 80.

Q1) What are the gear ratios between the motor/wheel and motor/dial?

Q2) If the dial is turned once complete revolution, how many turns do you get on the stepper motor shaft?

Q3) What is the number of steps in the stepper motor for one complete revolution of the dial?

Can someone please answer these above questions with full calculations and solutions? Thanks

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