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9 Cards in this Set
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Machine elements : rolling cylinders formula. Cylinder rolling in opposite direction |
* Tangential speed V₁ or V₂ = πDN * Relation of diameter and speed D₁N₁ = D₂N₂ *speed ratio = speed of driver/ speed of the driven * Center distance = R₁ + R₂ = (D₁ + D₂ )/2 |
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Rolling cylinders: formula of cylinder rolling in the same direction. |
* tangential speed , V = πDN * relation of diameter and speed D₁N₁ = D₂N₂ * Speed ratio = speed of the driver / speed of the driven * center distance = R₂ - R₁ = (D₂ -D₁) /2 |
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(prob.1) Two parallel shafts connected by pure rolling turn in the same direction having a speed ratio of 2.75. What is the distance of the shafts if the smaller cylinder is 22 cm in diameter? |
19.25 cm |
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(prob.2) A lineshaft runs at 360 rom. An 18" pulley on the shaft is belt connected to a 12" pulley on the countershaft. From a 15" pulley on the countershaft, motion is transmitted to the machine. Compute the required diameter of the pulley on the machine to give a spindle speed of 660 rpm. |
12 1/4" |
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(prob.3) A 5 ft. diameter pulley is turning at 200 rpm. FInd the speed of the pulley mid-way of the center and outer surface of the pulley. |
26.18 ft/s |
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(prob.4) A wheel is turning at 360 rpm. If tangential speed of the wheel is 150.80 ft/s, what is the radius of the flywheel |
4 ft. |
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(prob.5) Two cylinders rolling in opposite direction has a speed ratio of 3. If center distance is 40 in, find the diameter of smaller cylinder. |
20 inch |
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(prob.6) Three cylinders A:B:C rolling in external contact has a speed ratio of 4:2:1. If the diameter of cylinder A is 10 cm, find the center distance between cylinder A and C. |
45 cm |
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(prob.7) Four cylinders A:B:C:D has a speed ratio of 6:4:2:1. If center distance between A and C is 30 inches, find the center distance A and D. |
68.57 inch |
