Lab 8 Gear Trains and Speed Reducers I IntroductionPurpose The objective of the

Lab 8 gear trains and speed reducers i

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Lab 8 Gear Trains and Speed Reducers I. Introduction/Purpose - The objective of the lab is to learn gear ratios, gear trains, and the procedure on selecting a speed reducer. You also will cover the importance of a differential gear system. II. Approach/Methodology Exercise 1: A) For the given gears, fill out the remainder of the table with the nomenclatures of the gears. Run the gears at 3 different speeds and record their speed ratios. Then solve for the overall speed ratio. B) Using the catalog, select a speed reducer for the given application and complete the questions that follow. III. Data Exercise 1: A) . Gear specification Gear Type Number of Teeth Pitch Diameter Diametral Pitch S2472 Spur 72 3 24 H2496 Spur 96 4 24 L112Y Miter 24 1.5 16 L112Y Miter 24 1.5 16 H1616R Helical 16 1 16 H1632L Helical 32 2 16 Speed N1 N2 Actual Velocity Ratio Theoretical Velocity Ratio 6 6 4.5 1.33 1.33 8 8 6 1.33 1.33 7 7 5.5 1.27 1.27
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Speed N3 N4 AVR TVR 6 5 5 1.2 1 8 6.5 6.5 0.92 1 7 5 5 1.4 1 Speed N5 N6 AVR TVR 6 5.5 2.5 2.4 2.2 8 7 3.5 2.28 2 7 6.25 2.75 2.54 2.27 B)1.What is service factor? 2.What is the overall drive ratio? 3.Ratio of the worm gear reducer when belt drive ratio is 1.24? 4.What is the actual torque at the reducer output shaft? 5.What is the normal torque? 6.Selected size of reduced based on mechanical ratings? 7.Is the reducer thermally limited? 8.What is required motor HP?
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