Please solve this question Problem 20-9A pair of worm gears is designated as1/40/10/4The input speed of the worm shaft is 1200 rpm The worm wheel is made ofphosphorbronze (sand cast), while the worm of casehardened carbon steel 10C4. Thegear box for the worm gears has an effective surface area of0.25 m2. A fan ismounted on the worm shaft to circulate air over the surface of the fins. The coefficientof heat transfer can be taken as 25W/m2° C. The permissible temperature rise of thelubricating oil above the atmospheric temperature is 45° C. The coefficient of frictionis 0.035 and the normal pressure angle is 20°.Calculate the power transmitting capacity based on thermal considerations.

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Answered: Problem 20-9 A pair of worm gears is…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Helical Gears, Bevel Gears, and Wormgearing 3
Q: Two involute gears having module 3 mm and pressure angle 20° mesh externally to give a velocity ratio of 3. For this mechanism, the pinion runs at 75 rpm and addendum is equal to one module.For these condetions compute: 1- The number of teeth on each gear so that interference is just avoided. 2- The length of path and arc of contact. 3- The number of pairs of teeth in contact. 4- The maximum value of sliding velocity. 5- If the transmitted power is 5 kW, what is the applied torque on pinion and wheel.
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The request is to design the input shaft diameter for a double step-up gearbox with a 25⁰ pressure angle involute spur gear set and helical gear set. The gearbox is powered by a 3,9 kW Power, 50 Hz AC electric motor with a speed of 575 rpm. The main goal of the gearbox is to increase the speed to 2300 rpm. The machine components, including bolts, shafts, and bearings, must all be designed with a factor of safety (ns) as 3,5. The shaft operates at 60°C temperature. The material selected for the shaft is cold drawn EN8 with yield stress and hardness value of 480 MPa and 229 HBN, respectively. The torque is transmitted by means of keys in profiled keyways. The desired reliability is 99%. The shaft is of a constant diameter. The length of the input shaft is 120 mm, and the input spur gear is mid-mounted onto the shaft between the bearings. The horizontal transmitted load and vertical radial load due to input spur gear are 661 N and 429 N. Ignore the weight of the spur gear and use…
Problem 19-11 A pair of straight bevel gears, mounted on shafts which are intersecting at right angles, consists of a 24 teeth pinion meshing with a 32 teeth gear. The module at the large end of the tooth is 5 mm. Calculate : 1. the pitch circle diameters of the pinion and the gear; 2. the pitch angles for the pinion and gear; 3. the cone distance; 4. the formative number of teeth for the pinion and gear; and 5. the back cone radius for the pinion and gear?
Q: Two involute goars having module 3 mm and pressure angle 20 meah esternally to give a velocity ratio of 3 For this mechaniam, the pirnion runs at 75 rpm and addendum is equal to one module.For these condetions compute: t- The number of teeth on each gear so that interfarance is just avoided. 2 The length of path and arc of contact. 3 The number of pairs of teeth in contact. + The maximum value of siding velocity. S the transmited power is 5 KW, what is the acpled torque on pirion and wheel.
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Hi, please help me with the solution of this problem exercise. Thank you. Your help will be appreciated The Lmax = 4.0 in is the anwer.
A gear box has an input speed of 1800 rev/min clockwise and an output speed of 400 rev/min The input power is 25kW and the efficiency is 90%. Compute the input torque the output power 3. the output torque
A gearbox is needed to provide an exact increase in speed, while minimizing the overall gearbox size. The input and output shafts should be in-line. Specify appropriate teeth numbers. The gearbox is required to transmit 18 kW from a shaft rotating at 2650 rpm. The desired output speed is exactly 13250 rpm. For space limitation and standardization reasons a double step-up gearbox is requested. Using the limited selection of gears presented in Tables 6.7 to 6.10, select suitable gears for the gears and pinions 24 2650 rpm Table 6.7 Spur gears: 1.0 module, heavy duty steel 817M40, 655M13, face width 15 mm Outer Boss Bore Part PCD diameter diameter diameter number Teeth (mm) (mm) (mm) (mm) SG1.9 9 SG1-10 10 SG1-11 11 SG1-12 12 10:00 12:00 12 11.00 13.00 13 12.00 14.00 14 12.00 14.00 14 SG1-13 13 1300 15.00 15 6 SG1-14 14 1400 16.00 16 6 15.00 17.00 SG1-15 15 6 SG1-16 16 16.00 18.00 SG1-17 17 17.00 19.00 18 SG1-18 18 18.00 20.00 18 SG1-19 19 19:00 21.00 SG1-20 20 2000 2200 21.00 2300 2200…
QUESTION 5 A steel gear is to be mounted on a solid steel shaft using an interference fit H6/s4. The gear has 17 teeth cut to a module of m35 mm. The shaft diameter is 52 mm. The gear face width is 50 mm. what is the torque transmission capacity for this mounting? Assume a steel-on-steel friction coefficient of 0.6. The gear does not have protruding hub and it can be treated as a disc the thickness of which is equal to the face width of the gear teeth.Answer in N-m. (Acceptance limits=+/-10%)
Two identical involute, spur gears are in mesh. The module is 4 mm and each gear has 22 teeth If the operating pressure angle is 20° The minimum value of addendum needed to ensure continuous transmission of motion is

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