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Homework4_machinecomponentsandsystems

Homework4_machinecomponentsandsystems - 2.000 Homework 4...

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Unformatted text preview: 2.000 Homework # 4: Machine components Name:______________________________________ Weight: 100 pts Due: Day 10 at beginning of lecture (date differs from original syllabus) You must return your screwdriver in working condition! 1. Screw driver stall torque a). [10] Perform an experiment to determine if the stall torque listed by the manufacturer is correct. Provide a sketch of your experimental set up, the details of your calculation and the reasoning you used to make your decision about the manufacturer’s claim. b). [5] Perform an experiment to determine if the no-load speed listed by the manufacturer is correct. Provide a sketch of your experimental set up, the details of your calculation and the reasoning you used to make your decision about the manufacturer’s claim. 2.000 How and Why Machines Work © 2002 Martin L. Culpepper 1 2.000 Homework # 4: Machine components 2. Train ratio of combined planetary gear trains a.). [5] Find T r of the cordless screw driver. NOTE: ω in = ω motor and ω out = ω screw driver shaft . 1. Begin by solving for the speed of the arm in the first gear train as function of s1 2. ω a1 = ω s2 and ω a2 = ω screw driver shaft . 3. ω ring = 0!!! + + + (Integral sun gear-2) + Motor Gear GT-1 GEAR TRAIN # 1 (Sun gear-1) = Arm 1 Gear GEAR TRAIN # 2 = GT-2 b). [5] Perform an experiment to verify your calculation. Provide 1-2 sentence explanation of b)....
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Homework4_machinecomponentsandsystems - 2.000 Homework 4...

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