DESIGN OF MACHINERY
6th Edition
ISBN: 9781260113310
Author: Norton
Publisher: RENT MCG
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Chapter 9, Problem 9.11P
Design a compound, spur gear train for a ratio of 50:1 and diametral pitch of 8. Specify pitch diameters and numbers of teeth. Sketch the train to scale.
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Design a two-stage compound spur gear train for an overall ratio of approximately 17+08:1. Specify tooth numbers for each gear in the train.
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Two straight-toothed bevel gears mesh with a shaft angle of 90° and a diametral pitch of 5. The pinion has 20 teeth, and the gear ratio is 2:1. The addendum and dedendum are the same as for 20 stub teeth. For the gear, determine the pitch radius, cone angle, outside diameter, cone distance, and face width.
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DESIGN OF MACHINERY
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- Solve this problem in spur gearsA 17-tooth pinion meshes with an 84-tooth gear. The full-depth involute gear teeth have 20° pressureangle and a diametral pitch of 32. Determine the base pitch and the contact ratio. Also,calculate theaddendum, dedendum, circular pitch, tooth thickness, and the base diameter for the pinion and gear. Ifthe center distance isincreased by 0.125 in., what are the new valuesfor thecontact ratio and thepressureangle with complete solution and write in hand writing thank youarrow_forwardA 20⁰ stub involute gear, with 38 teeth and a circular pitch of 0.6 is paired with a pinion considering a gear ratio of 2.arrow_forwardExample:Design a compound gear train for an exact reduction ratio of 180:1 given: ϕ =20o Module: 4mmarrow_forward
- A pinion with known module and number of teeth rotates at 2400 rpm and drives a gear at 800 rpm.Assume the spur gears mesh along their pitch circles.Determine the number of teeth on the gear, circular pitch,and theoretical center distance.arrow_forwardA 17-tooth pinion meshes with an 84-tooth gear. The full-depth involute gear teeth have 20° pressure angle and a diametral pitch of 32. Determine the base pitch and the contact ratio. Also,calculate the addendum, dedendum, circular pitch, tooth thickness, and the base diameter for the pinion and gear. If the center distance is increased by 0.125 in., what are the new values for the contact ratio and the pressure angle?arrow_forwardA 17-tooth pinion meshes with an 84-tooth gear. The full-depth involute gear teeth have 20°pressure angle and a diametral pitch of 32. Determine the base pitch and the contact ratio.Also,calculate the addendum, dedendum, circular pitch, tooth thickness, and the base diameterfor the pinion and gear. If the center distance is increased by 0.125 in., what are the newvaluesfor the contact ratio and the pressure angle.arrow_forward
- For the gear train below, th numbers of teeth for individual gears are 12 9gear #1), Gear 18 (gear #2), 14 (gear #3), and 18(gear #4), To obtain a counter-clockwise rotation of 1500 rpm for the output gear(#4). What should be the rotation speed of the input gear (#1) and in which directions should the input gear rotatearrow_forwardColegio de Muntinlupa fabricated a pair of spur gear 2.5 module (20° full depth involute tooth) and to be mounted on shafts with a centerline distance of 90 mm. The speed ratio required is 3:1. Determine the following: a. Pitch diameter of pinionb. Pitch diameter of gearc. Number of teeth of piniond. Number of teeth of geare. Circular pitch of pinionf. Circular pitch of gearg. Addendumh. Dedendumi. Clearancej. Whole depthk. Working Depthl. Backlashm. Tooth thicknessn. Tooth space widtho. Outside diameter of pinionp. Outside diameter of gearq. Root diameter of pinionr. Root diameter of gears. Base diameter of piniont. Base diameter of geararrow_forwardA 20° full-depth, involute spur gear with 18 teeth has a diametral pitch of 12. Determine the following: (a) the pitch circle diameter, (b) the diamter of the base circle, (c) the diameter of the addendum circle, (d) the diameter of the dedendum circle and (e) the circular pitch.arrow_forward
- Question 01: Design a two-stage compound spur gear train for an overall ratio of approximately 17+12 : 1. Specify tooth numbers for each gear in the train.arrow_forwardTwo equal spur gears of 48 teeth mesh together with pitch radii of 4.0 in. and addenda of 0.1670in. If the pressure angle is 14 1⁄2 deg, calculate the length of action and contact ratio.arrow_forwardA pair of gear/pinion of 42 tooth and 18 tooth with a diametral pitch of 0.7874 teeth/cm and the addendum is 0.8/p and dedendum 1/p. The gear pressure angle is 200 . Compute the center distance of the pair of gears in meters.arrow_forward
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