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 21, Problem 4RQ
How is feed related to speed in the machining operations called turning?
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In orthogonal machining operation the chip thickness and the uncut chip thickness are equal to 0.45 mm. If the tool rake and is 0 deg. What is the shear plane angle?
For face milling a 2 x 3 inch surface using 1.5 in face mill tool. What is the time required to finished a cut when the depth of cut is 0.02 inch and the feed rate 0.05 inch/rev, RPM is 60.
The subject is Machine Shop Theory. Please make clear the solution and answer and understandable. Thanks
Q#2
“Milling is an intermitted cutting operation”. Explain it.
Chapter 21 Solutions
Degarmo's Materials And Processes In Manufacturing
Ch. 21 - Why has the metal-cutting process resisted...Ch. 21 - What variables must be considered in understanding...Ch. 21 - Which of the seven basic chip formation processes...Ch. 21 - How is feed related to speed in the machining...Ch. 21 - Before you select speed and feed for a machining...Ch. 21 - Milling has two feeds. What are they, and which...Ch. 21 - What is the fundamental mechanism of chip...Ch. 21 - What is the difference between oblique machining...Ch. 21 - What are the implications of Figure 21.13, given...Ch. 21 - Note that the units for the approximate equation...
Ch. 21 - For orthogonal machining, the cutting edge radius...Ch. 21 - How do the magnitude of the strain and strain rate...Ch. 21 - Why is titanium such a difficult metal to machine?...Ch. 21 - Explain why you get segmented or discontinuous...Ch. 21 - Why is metal cutting shear stress such an...Ch. 21 - Which of the three cutting forces in oblique...Ch. 21 - How is the energy in a machining process typically...Ch. 21 - Where does the energy consumed in metal cutting...Ch. 21 - What are two ways of estimating the primary...Ch. 21 - What are the three different ways to perform...Ch. 21 - Why does the cutting force Fc increase with...Ch. 21 - Why doesnt the cutting force Fc increase with...Ch. 21 - Prob. 23RQCh. 21 - How does the selection of the machining parameters...Ch. 21 - Suppose you had a machining operation (boring)...Ch. 21 - Make a sketch like that shown in Figure 21.1 with...Ch. 21 - Show how you would do near orthogonal machining in...Ch. 21 - Can you do orthogonal machining on a shaper or...Ch. 21 - What process and material combination would yield...Ch. 21 - What is meant by the statement that machining...Ch. 21 - Prob. 31RQCh. 21 - Figure 21.4 provides suggested cutting speeds and...Ch. 21 - For problem 1, suppose you selected a speed of 145...Ch. 21 - If the cutting forces is 1000 lb calculate the...Ch. 21 - Explain how you would estimate the cutting force...Ch. 21 - For a turning operation, you have selected a...Ch. 21 - For a slab milling operation using a...Ch. 21 - The power required to machine metal is related to...Ch. 21 - In order to drill a hole in the material described...Ch. 21 - Suppose you have the data in Table 21.A obtained...Ch. 21 - Calculate the horsepower that a process is going...Ch. 21 - Explain how you would estimate the cutting force...Ch. 21 - Derive equations for F and N using the circular...Ch. 21 - Prob. 14PCh. 21 - Prob. 15PCh. 21 - A manufacturing engineer needs an estimate of the...Ch. 21 - Using Figure 21.4 for input data, determine the...Ch. 21 - Estimate the horsepower needed to remove metal at...Ch. 21 - For a turning process, the horsepower required was...
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- Why proper selection of cutting speed is important in machining? What is the main advantage of a turret lathe over to engine lathe? Give advantages of horizontal band saw over reciprocating power hacksaw. What is the difference in drilling operation using a drill press and lathe?arrow_forwardFor pocket operation of 2 x 3 inch surface and dept of 0.06 in using 0.5 in end mill tool. What is the time required to finished a cut when the depth of cut is 0.3 inch and the feed rate 0.05 inch/rev, spindle RPM is 60. The subject is Machine Shop Theory. Please make clear the solution and answer and understandable. Thanksarrow_forwardIn an orthogonal machining with a tool of gº orthogonal rake angle, the uncut chip thickness is 0.2 mm. The chip thickness fluctuates between 0.25 mm and 0 4 mm what is the ratio of the maximum shear angle to the minimum shear angle during machining?arrow_forward
- Make a figure and explain how shear plane angle effect the power requirements in the machining. How can you reduce the power requirements during machining in orthogonal cutting? plzz do it in 45 minutesarrow_forward2.15 What are the advantages to dry machining?arrow_forwardIn a classic cutting mill, there is a height difference between the two blades. Why?arrow_forward
- 21.17 What is shaping in machining? When would it be used?arrow_forwardThis is a machining process for producing internal straight cylindrical surface or profiles with process characteristics and tooling similar to those for turning operations.what is this machining process? (a) Boring (b)Drilling (c)Reaming (d) Millingarrow_forwardIf a fairing operation is executed at a rotational speed of 40.0 rev / min, the feed is 0.015 in / rev and the depth of cut is 0.180 in, it determines: a) cutting time to complete the fairing operation; and b) the cutting speed; and c) The speed of metal removal at the beginning and end of the cut d) The power dissipated.arrow_forward
- 1.) On a lathe, a cylindrical work piece of 100mm diameter is being turned. The RPM is 100. The cutting speed is _________?(m/min)arrow_forwardwhat are the three basic parameters (cutting variables) in the machining process? how to calculate themarrow_forwardA part to be turned in an engine lathe must have asurface finish of 1.6 mm. The part is made of a freemachining aluminum alloy. Cutting speed = 150 m/min,and depth of cut = 4.0 mm. The nose radius on the tool =0.75 mm. Determine the feed that will achieve thespecified surface finish.arrow_forward
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