Homework Answers
Given question is reverted gear train. In gear train problem always use gear ratio for driver gear and driven gear. From gear ratio speed of unknown gear calculate with the help of number of teeth given for gears.
Solution is given below in images.
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Q1) For the set of four gears shown below, calculate output speed, output torque, and horsepower for both input and...
2. Consider the triple speed reduction gear box shown in Figure 1. All the gears are...
2. Consider the triple speed reduction gear box shown in Figure 1. All the gears are made with a diametral pitch of 16 in. The input of the gear train is gear A, and the output is gear G. The gear train transmits an input toque of 250 lb-in, at a speed of 2,500 rpm clockwise. The number of teeth on each gear is given as follows: NA 24 teeth, Na = 60 teeth, Nc 20 teeth, No 58 teeth,...
A transfer shaft with two spur gears shown below: Input Gear 1 Output Gear Torque Bearing...
A transfer shaft with two spur gears shown below: Input Gear 1 Output Gear Torque Bearing 1 Gear 1 Gear 2 Bearing 2 B OTO 4" 4" 4" 4 . . Weight Ibf Teeth number Pressure angle Po (diametric pitch) teeth/in Gear A 50 20° 6 Gear C 2 25 20° 6 Deep groove ball bearings at B and D. Pitch diameter of the gear is equal to the teeth number divided by diametric pitch. Shaft speed = 3000 rpm....
Figure Q1 shows a gear train consists of four spur gears A, B, C and D to be designed for a specific mechanism. The power transmitted by gear A is 5 kW at rotational speed of 720 rpm counterclockwise direction. Number of teeth (N) for gears A,B,C and D ar
Figure Q1 shows a gear train consists of four spur gears A, B, C and D to be designed for a specific
mechanism. The power transmitted by gear A is 5 kW at rotational speed of 720 rpm
counterclockwise direction. Number of teeth (N) for gears A,B,C and D are respectively 20, 50,
30 and 60. The module and pressure angle of the gears are respectively 4 mm and 20o
. Determine
followings:
(a) Tangential and radial forces between gears...
Machine design 1 Name Application 10 The compound reverted gear train shown below is used to...
Machine design 1
Name Application 10 The compound reverted gear train shown below is used to reduce the speed of the input (gear 2) to the output gear 5. Your objective is to develop a design for this gear train be specify the gear teeth. There are several requirements to keep in mind and the objective is to reduce the overall size dimension Y Requirements . . . . Shall deliver 20 HP Input speed shall be 1750 RPM (adjustable)...
For the problem below, calculate the overall gear ratio, output speed, direction of rotation for the...
For the problem below, calculate the overall gear ratio, output speed, direction of rotation for the output, output torque, input power and output power. (30 pt) A 3 12 hp, 1,725 rpm, motor is connected to the input shaft input TI I output
The top half of a compound epicyclic gear set is as shown in Figure Q2. If...
The top half of a compound epicyclic gear set is as shown in Figure Q2. If the input shaft I rotate at dockwise direction at a speed of 1,200 rpm and gear Al is set as the output, determine the following. (a) The output speed Nal when gear X rotates counter-clockwise direction at the speed of 3,000 rpm. (b) The magnitude and direction of the torque required to lock gear X if 300 Nm torque is applied on input shaft...
Your company needs a spur gearset for speed reduction from input of 3750 to output of 1500 rpm. T...
Your company needs a spur gearset for speed reduction from input of 3750 to output of 1500 rpm. The motion input comes from a single cylinder engine, with the peak torque of 234 lb-in. Your lab already has a 20 teeth, 4-in pitch diameter, 20o pressure angle gear that you wish to use as a pinion. Your lab assistant determined that , and Jg are 0.34 and 0.4, Kv 0.8, Km = 1.6, Ks -KB 1. For contact stress calculation,...
Kinematics class 3. (25 POINTS) Planetary gear train analysis: The figure below representsa planetary gear train...
Kinematics class
3. (25 POINTS) Planetary gear train analysis: The figure below representsa planetary gear train used in a drill head. Gear 1 rotates with the input shaft. The ring gear 3 meshes both with gear 5 and gear 6, which are the planets. Gear 2 acts as the carrier for gear 5, the output is the carrier 4 Consider the number of teeth Ni-6, N2 36, N-54, N-24 and No-9 a) Identify how many stages are needed to fully...
I. The countershaft shown in the Fig Q1 has two spur gears mounted on it with teeth cut wi a 20 pressure angle....
I. The countershaft shown in the Fig Q1 has two spur gears mounted on it with teeth cut wi a 20 pressure angle. The shaft (grooved) is to be made of cold-drawn AISI 1040 steel havin Sut 779 MPa and S,-593 MPa, an elongation of 19% and HB-262. You are asked to size the shaft for safe operation according to DE-Elliptic criterion by using a factor of safety of 2.5 and a reliability of 99 percent. The stress-concentration factors for...
You work for a gearbox company and have been charged with helping to design a geared...
You work for a gearbox company and have been charged with helping to design a geared countershaft for a speed reducing gearbox. The gearbox consists of a compound reverted gear train as shown below and is to be designed for an exact 16:1 speed reduction ratio. The input motor provides 10-horsepower which is carried through the gear train and operates at a speed of 2,000 rpm. You are asked to consider spur gears with a 20° pressure angle and 4...
2. Consider the triple speed reduction gear box shown in Figure 1. All the gears are made with a diametral pitch of 16 in. The input of the gear train is gear A, and the output is gear G. The gear train transmits an input toque of 250 lb-in, at a speed of 2,500 rpm clockwise. The number of teeth on each gear is given as follows: NA 24 teeth, Na = 60 teeth, Nc 20 teeth, No 58 teeth,...
A transfer shaft with two spur gears shown below: Input Gear 1 Output Gear Torque Bearing 1 Gear 1 Gear 2 Bearing 2 B OTO 4" 4" 4" 4 . . Weight Ibf Teeth number Pressure angle Po (diametric pitch) teeth/in Gear A 50 20° 6 Gear C 2 25 20° 6 Deep groove ball bearings at B and D. Pitch diameter of the gear is equal to the teeth number divided by diametric pitch. Shaft speed = 3000 rpm....
Machine design 1
Name Application 10 The compound reverted gear train shown below is used to reduce the speed of the input (gear 2) to the output gear 5. Your objective is to develop a design for this gear train be specify the gear teeth. There are several requirements to keep in mind and the objective is to reduce the overall size dimension Y Requirements . . . . Shall deliver 20 HP Input speed shall be 1750 RPM (adjustable)...
For the problem below, calculate the overall gear ratio, output speed, direction of rotation for the output, output torque, input power and output power. (30 pt) A 3 12 hp, 1,725 rpm, motor is connected to the input shaft input TI I output
The top half of a compound epicyclic gear set is as shown in Figure Q2. If the input shaft I rotate at dockwise direction at a speed of 1,200 rpm and gear Al is set as the output, determine the following. (a) The output speed Nal when gear X rotates counter-clockwise direction at the speed of 3,000 rpm. (b) The magnitude and direction of the torque required to lock gear X if 300 Nm torque is applied on input shaft...
Your company needs a spur gearset for speed reduction from input of 3750 to output of 1500 rpm. The motion input comes from a single cylinder engine, with the peak torque of 234 lb-in. Your lab already has a 20 teeth, 4-in pitch diameter, 20o pressure angle gear that you wish to use as a pinion. Your lab assistant determined that , and Jg are 0.34 and 0.4, Kv 0.8, Km = 1.6, Ks -KB 1. For contact stress calculation,...
Kinematics class
3. (25 POINTS) Planetary gear train analysis: The figure below representsa planetary gear train used in a drill head. Gear 1 rotates with the input shaft. The ring gear 3 meshes both with gear 5 and gear 6, which are the planets. Gear 2 acts as the carrier for gear 5, the output is the carrier 4 Consider the number of teeth Ni-6, N2 36, N-54, N-24 and No-9 a) Identify how many stages are needed to fully...
I. The countershaft shown in the Fig Q1 has two spur gears mounted on it with teeth cut wi a 20 pressure angle. The shaft (grooved) is to be made of cold-drawn AISI 1040 steel havin Sut 779 MPa and S,-593 MPa, an elongation of 19% and HB-262. You are asked to size the shaft for safe operation according to DE-Elliptic criterion by using a factor of safety of 2.5 and a reliability of 99 percent. The stress-concentration factors for...
You work for a gearbox company and have been charged with helping to design a geared countershaft for a speed reducing gearbox. The gearbox consists of a compound reverted gear train as shown below and is to be designed for an exact 16:1 speed reduction ratio. The input motor provides 10-horsepower which is carried through the gear train and operates at a speed of 2,000 rpm. You are asked to consider spur gears with a 20° pressure angle and 4...
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