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 48RQ
What factors are usually checked in inspecting gears?
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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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- The questions is this: 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?arrow_forwardType of gear ?Type of tolerance ?arrow_forwardi need the answer quicklyarrow_forward
- Which of the following is used to generate the involute profile of the gear teeth? Choose answer below Base circle Pitch circle Addendum circle Dedendum circle None of the above Which of the following is NOT a function of lubricants in rolling contact bearings? choose answer below Provide a film between surfaces Distribute and dissipate heat Prevent corrosion of surfaces Protect against foreign matter Reduce contact stressarrow_forwardThe 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_forwardState advantages of Cycloidal & Involute profile as a gear tooth profile ?arrow_forward
- Another very common mode of failure of gear teeth is that due to surface damage or pitting, which can eventually result in extensive cratering and loss of the load bearing surface of the tooth. Which of the following best describes the causes, and some of the measures that can be taken to prevent this form of failure. a. Maximum compressive stresses occur at the root of the tooth; - Stress concentrations due to cracks in the tooth flank can increase these stresses; - Failure is due to fatigue loading, and is worse because of shock loads: -Asperity to asperity contact, and hence high surface roughness or poor lubrication can make this failure worse; - Surface load capacity can be improved by selecting materials with high surface hardness values, such as carburised steels; - Once pitting has occurred over more than 10 % of the surface, gears are no longer serviceable. b. Maximum tensile stresses occur at the point of contact between the teeth; - Stress concentrations due to pits or small…arrow_forwardWhat distinguishes modern gear from older models?arrow_forwardExplain various types of Gear. With the help of a neat sketch, explain the law of gearing? Explain the need of clearance in a gear. What are the harmful effect of backlash error?arrow_forward
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