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 9RQ
To determine
The method of controlling the pitch on a lathe while thread cutting.
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A mild steel specimen of Initial diameter of 53.5 mm is turned to final diameter of 47 mm for an initial length of 154 mm on a lathe machine.
Using the given data find the following.
(i) Feed of 0.4 mm/rev & Depth of cut is 0.5 mm
(ii) During machining the tool's approach length is 5 mm, over run length is 2mm
(iii) Total time required to complete the turning operation is 59.6 minutes
A mild steel specimen of Initial diameter of
53.5 mm is turned to final diameter of 47 mm
for an initial length of 154 mm on a lathe
machine.
Using the given data find the following.
(i) Feed of 0.4 mm/rev & Depth of cut is 0.5
mm
(ii) During machining the tool's approach
length is 5 mm, over run length is 2mm
(iii) Total time required to complete the
turning operation is 59.6 minutes
(a) Find number of passes to finish the entire
turning operation (
(b) The actual length of the turning operation
in mm ('
A mild steel specimen of Initial diameter of
51.5 mm is turned to final diameter of 48 mm
for an initial length of 151 mm on a lathe
machine.
Using the given data find the following.
(i) Feed of 0.1 mm/rev & Depth of cut is 0.5
mm
(ii) During machining the tool's approach
length is 7 mm, over run length is 2mm
(iii) Total time required to complete the
turning operation is 48.8 minutes
(a) Find number of passes to finish the entire
turning operation
(b) The actual length of the turning operation
in mm (
(c)The time required to complete one single
turning operation in minutes
(d) Spindle speed in rpm
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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