DeGarmo's Materials and Processes in Manufacturing
12th Edition
ISBN: 9781118987674
Author: J. T. Black, Ronald A. Kohser
Publisher: WILEY
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Chapter 31, Problem 2RQ
To determine
The types of threads for which the pitch is the same as the lead.
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is the standard quality for a bulk of internal threads
average quality, internal threads
average quality external threads, but not as good as 3B quality
average quality internal threads, but not as good as a 3B quality
average quality, external threads
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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- Consider a thread callout of Dia 0.375-10 UNF-2B. How far will the thread travel if it is subjected to 3 full rotations? (Assume infinite thread lengths for simplicity)? Units are in Inches please answer quicklyarrow_forwardWhat is the TPI of a ½-20 thread?arrow_forwardWhat type of thread is machined on a tapered diameter and is used to create leak-proof joints?arrow_forward
- What form of screw thread is most commonly used in the united states?arrow_forwardConsider a thread callout of Dia 0.375-10 UNF-2B. How far will the thread travel if it is subjected to 3 full rotations? (Assume infinite thread lengths for simplicity)? Units are in Inches List your answer in a decimal format.arrow_forwardWhat form of screw thread is most commonly used in japan?arrow_forward
- 1. Name some uses of threads. Give an example of each. NOTE: Screw Thread – A screw thread may be visualized as a flexible form, like a piece of string that has been wrapped around a cylinder, or the sides of the cylindrical hole, at a uniform rate of advance, producing a form known as a helix. It may also be considered as a raised form produced on the outside of a cylinder, or on the inside walls of a cylindrical hole after a thread-cutting operation has been completed.arrow_forwardWhat are the different types of screws?arrow_forwardIn this project, you have been asked to technically support the team in the following case: The team is working to select the best method to manufacture a steel threaded bolt, see Figure 2. You have been asked to figure out different alternatives to manufacture the bolt and make a comparison between the alternatives in terms of productivity, quality, surface finish, cost and others engineering factors. Which process do you recommend the most and why? thread nut runout shank radius head * grip length – nominal length thread length Figure 2: Threaded bolt and nut.arrow_forward
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