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 23, Problem 21RQ
Why might it be desirable to use a heavy depth of cut and a light feed at a given speed in turning rather than the opposite?
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Figure and table given below shows the design details of a taper turning operation with a cutting speed of 22 m/ minute, feed 0.2 mm/ revolution; Depth of cut of 0.5 mm.
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If 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.
Find the machining time required to turn a mild steel rod from 65mm to 58 mm over a length of 100 mm by using a carbide insert. If the approach length and over run length is taken as 5 mm, Cutting speed as 20 m/min and feed is =0.2 mm/rev, and the depth of cut is 0.5mm
Chapter 23 Solutions
Degarmo's Materials And Processes In Manufacturing
Ch. 23 - How is the tool-work relationship in turning...Ch. 23 - What different kinds of surfaces can be produced...Ch. 23 - How does form turning differ from ordinary...Ch. 23 - What is the basic difference between facing and a...Ch. 23 - Which operations shown in Figure 23.3 do not form...Ch. 23 - Why is it difficult to make heavy cuts if a form...Ch. 23 - Show how equation 23.6 is an approximate equation.Ch. 23 - Why is the spindle of the lathe hollow?Ch. 23 - What function does a lathe carriage have?Ch. 23 - Why is feed specified for a boring operation...
Ch. 23 - Why are depths of cut in boring usually smaller...Ch. 23 - How can work be held and supported in a lathe?Ch. 23 - How is a workpiece that is mounted between centers...Ch. 23 - What will happen to the workpiece when turned, if...Ch. 23 - Why is it not advisable to hold hot-rolled steel...Ch. 23 - How does a steady rest differ from a follow rest?Ch. 23 - What are the advantages and disadvantages of a...Ch. 23 - Why should the distance the cutting tool overhangs...Ch. 23 - Prob. 19RQCh. 23 - How can a tapered part be turned on a lathe?Ch. 23 - Why might it be desirable to use a heavy depth of...Ch. 23 - If the rpm for a facing cut (assuming given work...Ch. 23 - Why is it usually necessary to take relatively...Ch. 23 - How does the corner radius of the tool influence...Ch. 23 - What effect does a BUE have on the diameter of the...Ch. 23 - How does the multiple-spindle screw machine differ...Ch. 23 - Why does boring ensure concentricity between the...Ch. 23 - Why are vertical spindle machines better suited...Ch. 23 - Prob. 29RQCh. 23 - Prob. 30RQCh. 23 - In which figures in this chapter is a dead center...Ch. 23 - Prob. 32RQCh. 23 - In which figures in this chapter showing setups do...Ch. 23 - How many form tools are being utilized in the...Ch. 23 - Prob. 35RQCh. 23 - Select the speed, feed, and depth of cut for...Ch. 23 - Calculate the rpm NS to run the spindle on a lathe...Ch. 23 - The lathe in problem 2 has rpm settings of 20, 30,...Ch. 23 - Calculate the cutting time if the length of cut is...Ch. 23 - Calculate the metal removal rate for machining at...Ch. 23 - Determine the speed, feed, and depth of cut when...Ch. 23 - At a speed of 90 fpm, feed of 0.030 ipr, and depth...Ch. 23 - Calculate the cutting time for a 4-in. length of...Ch. 23 - For a boring operation at V=90,fr=0.030, and...Ch. 23 - A cutting speed of 100 sfpm has been selected for...Ch. 23 - The following data apply for machining a part on a...Ch. 23 - A finish cut for a length of 10 in. on a diameter...Ch. 23 - A workpiece 10 in. in diameter is to be faced down...Ch. 23 - A hole 89 mm in diameter is to be drilled and...
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- with neat sketch explain any three different types mandrels used in a lathe. Why is it used?arrow_forwardChoose the most appropriate answers. The unit of cutting parameter "Feed"........ Conveyors designed within a restricted area is an example of........ Milling method in which the cutter axis is parallel to the machining surface is....arrow_forwardIn a classic cutting mill, there is a height difference between the two blades. Why?arrow_forward
- With a neat sketch, explain the 4 types of Taper turning operations?arrow_forwardA turning operation uses a 2/64 in nose radius cuttingtool on a free machining steel with a feed rate = 0.010in/rev and a cutting speed of 300 ft/min. Determine thesurface roughness for this cut.arrow_forwardWhy 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_forward
- to perform a rough cut single point facing operation in a lathe of 5 mm diameter cylinder workpiece made of bronce . Feed rate is 0.5 mm/rev , depth of cut of 4.5mm, and Specific Energy of 3 W-s/mm^3. What is the Material Removal Rate in mm^3/s?arrow_forwardWhere are the areas on the lathe that should be given most caution? Whyarrow_forwardFor 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. Thanksarrow_forward
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