DeGarmo's Materials and Processes in Manufacturing
12th Edition
ISBN: 9781118987674
Author: J. T. Black, Ronald A. Kohser
Publisher: WILEY
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Textbook Question
Chapter 31, Problem 33RQ
What difficulty would be encountered in bobbing a herringbone gear?
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A 5000-lb. gear box is provided with a steel (as rolled B1113) eyebolt for use in moving it. What size bolt should be used: a.if UNC threads are used? b.If UNF threads are used? c.If the 8-thread series is used? and I got the answer in the picture provided.
Can you explain further the basis of the choice of the design factor?
State advantages of Cycloidal & Involute profile as a gear tooth profile ?
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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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- For a stub tooth spur gear with 20 teeth, a face width of 55 mm, a module of 5 mm, and a material with an endurance strength of 220 MPa, what is the allowable endurance load?arrow_forwardWith proper reasoning and neat sketches derive the Buckingham equation for spur gear so that pitting failure does not take place.arrow_forwardIf you have a steel, through-hardened gear with a HB of 250, factor of safety of 1.2, at room temp, reliability=1, grade 2, # cycles = 30,000,000, YN = ZN = 1; how much stress can this gear withstand?arrow_forward
- I need the answer quicklyarrow_forwardIf the diametral pitch is 6 teeth per mm, what is the tooth thickness for a 14.5 degree composite gear?arrow_forwardQuestion 1 What is the difference between bending stress and pitting resistance? And why is it important to verify the bending stress of the standard selected gearsarrow_forward
- The radial distance between the addendum circle of a gear and the dedendum circle of a gear is known as ______________________. clearance working depth circular pitch total deptharrow_forwardA 5000-lb. gear box is provided with a steel (as rolled B1113) eyebolt for use in moving it. What size bolt should be used: a. if UNC threads are used? b. If UNF threads are used? c. If the 8-thread series is used? Explain the basis of your choice of design factor.arrow_forwardA 5000-lb. gear box is provided with a steel (as rolled B1113) eyebolt for use in moving it. What size bolt should be used: a.if UNC threads are used? b.If UNF threads are used? c.If the 8-thread series is used? Explain the basis of your choice of design factor.arrow_forward
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