Gear Ratio ची गणना कशी करावी
Gear Ratio म्हणजे काय?
Gear ratio is the speed reduction/increase between input and output shafts. It determines torque multiplication and shaft speeds.
सूत्र
Ratio = N_input / N_output = N_driven / N_driver = T_output / T_input
चरण-दर-चरण मार्गदर्शक
- 1Ratio = N_input / N_output = N_driven / N_driver = T_output / T_input
- 2Spur gears: ratio = number of teeth on driven / number on driver
- 3Power is conserved: P = T × ω
Worked Examples
इनपुट
Input 1800 rpm, output 600 rpm
परिणाम
Gear ratio = 3:1 (3× speed reduction, 3× torque increase)
Power unchanged
Common Mistakes to Avoid
- ✕Confusing speed ratio with force multiplication
- ✕Neglecting friction losses in extended calculations
Frequently Asked Questions
Can any two gears mesh together?
No, they must have same pressure angle and pitch. Teeth must fit smoothly without interference.
How is efficiency handled?
Mechanical power loss (5-10%) converts to heat; P_out = P_in × η.
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