Degarmo's Materials And Processes In Manufacturing
13th Edition
ISBN: 9781119492825
Author: Black, J. Temple, Kohser, Ronald A., Author.
Publisher: Wiley,
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Textbook Question
Chapter 31, Problem 29RQ
On a sketch of a gear, indicate the pitch circle, addendum circle, dedendum circle, and circular pitch.
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Students have asked these similar questions
answer question no. 1-2 only
Question 3
(a) A compound gear train consists of 7 gears (1– 7) in total with the number of teeth given in
the table below. Gears 2 and 3 and gears 5 and 6 are a compound gear set. Gear 1 rotates in a
clockwise direction.
N1 = 45, N2 = 30, N3 = 60, N4 = 20, Ns = 45, N6 = 54, N7= 25
i. Briefly sketch and label the gear train. Note a 2D sketch is sufficient and the diameters
of the gears are not required at this stage so use your own judgement on sizing but clearly
state any assumptions.
ii. Determine the Velocity Ratio and Train Value of the gear Train.
iii. If the input speed is 200rev/mins determine the output speed and direction.
iv. Determine the speed of gear 4.
(b) A 1m long rectangular beam supported at either end is subjected to a 5kN point load in the
centre. Determine the maximum bending and maximum shear stress if the beam is 20mm thick
and 200mm wide.
select one only. thanks!
Chapter 31 Solutions
Degarmo's Materials And Processes In Manufacturing
Ch. 31 - How does the pitch diameter differ from the major...Ch. 31 - Prob. 2RQCh. 31 - Prob. 3RQCh. 31 - Prob. 4RQCh. 31 - Prob. 5RQCh. 31 - Explain the meaning of 14 -20 UNC-3A.Ch. 31 - Prob. 7RQCh. 31 - Prob. 8RQCh. 31 - Prob. 9RQCh. 31 - Prob. 10RQ
Ch. 31 - Prob. 11RQCh. 31 - Prob. 12RQCh. 31 - Prob. 13RQCh. 31 - What is the reason for using a taper tap before a...Ch. 31 - Prob. 15RQCh. 31 - Can a fluteless tap be used for threading a hole...Ch. 31 - What provisions should a designer make so that a...Ch. 31 - What is the major advantage of a spiral-point tap?Ch. 31 - Prob. 19RQCh. 31 - Is it desirable for a tapping fluid to have...Ch. 31 - How does thread milling differ from thread...Ch. 31 - What are the advantages of making threads by...Ch. 31 - Prob. 23RQCh. 31 - Prob. 24RQCh. 31 - What is a fluteless tap?Ch. 31 - Why is the involute form used for gear teeth?Ch. 31 - What is the diametral pitch of a gear?Ch. 31 - What is the relationship between the diametral...Ch. 31 - On a sketch of a gear, indicate the pitch circle,...Ch. 31 - What five requirements must be met for gears to...Ch. 31 - What are the advantages of helical gears compared...Ch. 31 - Prob. 32RQCh. 31 - What difficulty would be encountered in bobbing a...Ch. 31 - What is the only type of machine on which...Ch. 31 - Prob. 35RQCh. 31 - Why arent more gears made by broaching?Ch. 31 - What is the most important property of a crown...Ch. 31 - What are three basic processes for machining...Ch. 31 - Which basic gear-machining process is utilized in...Ch. 31 - When a helical gear is machined on a milling...Ch. 31 - Why is a gear-hobbing machine much more productive...Ch. 31 - Prob. 42RQCh. 31 - What are the advantages of cold-roll forming for...Ch. 31 - Prob. 44RQCh. 31 - Under what conditions should shaving not be used...Ch. 31 - Prob. 46RQCh. 31 - Can lapping be used to finish cast iron gears?Ch. 31 - What factors are usually checked in inspecting...Ch. 31 - What are the basic methods for gear finishing?Ch. 31 - A hob that has a pitch diameter of 76.2 mm is used...Ch. 31 - In Figure 31.17, a form-milling operation and...Ch. 31 - A gear-broaching machine can complete the gear in...Ch. 31 - Prob. 4PCh. 31 - If only three gears described in Problem 4 were to...Ch. 31 - Based on the size and shape of the product,...Ch. 31 - What type of engineering materials might be able...Ch. 31 - Prob. 3CS
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- State law of gearing? What do you understand by the term ‘interference’ as applied to gears? Give me a clear answer please. with a drawingarrow_forwardDRAW A GEAR NOMENCLATURE Given: Module of the Gear is 30mm. Number of Teeth is 20. Thickness of the Gear is 80mm. Find the Following: a. Root Diameter, Reference DIameter, TIp Diameter b. Addendum, Dedendum c. Pressure Angle, Base Diameter d. Tooth Thickness, Tooth Depth Draw a complete and detailed sketch Show complete solution Write eligiblearrow_forwardA 12-tooth external spur gear A, rotating clockwise, drives a gear B whose diametral pitch is 4. The ratio of the speed of gear A to gear B is 2 to 1. The tooth proportions are standard 14-¹2° brown and sharpe. (1) Placing the center of gear A on a vertical line above the center of B on the same vertical line show and give the diameters of the pitch circles, addendum circles, and dedendum circles. (2) Sketch in roughly enough of a tooth on each gear in contact at the pitch point and indicate the face of the tooth, the flank of the tooth and the pitch point. (Please do indicate the computations, most especially the drawings. Thank you!)arrow_forward
- Provide a very clear and complete solution. Determine the pitch diameter of a gear with 28 teeth and module of 2. A. 16 mm B. 34 mm C. 47mm D. 56mmarrow_forwardThe radial distance measured from the pitch circle of a gear to the bottom of the gear tooth is known as the dedendum of a gear. Select one: True Falsearrow_forwardRefer to Figure 1 and answer the below questions specifying the values and units when necessary: What is the outer radius of the gear: • What is the inner radius of the gear: • What is the value of a tooth width: What is the value of a tooth angle: • What is the scale factor of a Detail A: How many teeth does the gear have: How many 018mm holes does the gear have: • What is the thickness of the gear: • What is the radius of the middle hole: DETAIL A SCALE 2:1arrow_forward
- calculate the indexing for the following: 1. 914 divisions 2.1300 divisions note: the link for the calculations is provided https://www.youtube.com/watch?v=Z0FR4gzPHiUarrow_forwardNumber of Teeth on Gears A, B, C, D, E and F are 40, 132, 50, 120, 50 and 116 respectively. Gear A rotates Clockwise and is connected to a motor spinning at 900 RPM. What is the RPM and rotational direction (Clockwise/Anticlockwise) of various gears, and the final output RPM and rotation direction on shaft of gear F? What is the overall speed reduction of the drive train?arrow_forwardcalculate the indexing for the following: 1. 1623 divisions 2. 1124 divisions note: watch the link video for the exact calculations https://www.youtube.com/watch?v=Z0FR4gzPHiUarrow_forward
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