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 25, Problem 4RQ
When a large-diameter hole is to be drilled, why is a smaller-diameter hole often drilled first?
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Identify the drilling operation in which the top
portion of a hole is enlarged into a tapered conical
shape.
Reaming
O Gun drilling
O Counter boring operation
Counter sinking operation
What size hole was drilled in part? Would it be 3/16?
. Circle the correct section view out of the three possibilities.
Would a half section been effective in this case? (Yes, No)
Why? .
Chapter 25 Solutions
Degarmo's Materials And Processes In Manufacturing
Ch. 25 - What functions are performed by the flutes on a...Ch. 25 - What determines the rake angle of a drill? See...Ch. 25 - Basically, what determines what helix angle a...Ch. 25 - When a large-diameter hole is to be drilled, why...Ch. 25 - Equation 25.4 for the MRR for drilling can be...Ch. 25 - Are the recommended surface speeds for spade...Ch. 25 - What can happen when an improperly ground drill is...Ch. 25 - Why are many drilled holes oversize with respect...Ch. 25 - What are the two primary functions of a...Ch. 25 - What is the function of the margins on a twist...
Ch. 25 - What factors tend to cause a drill to drift off...Ch. 25 - The drill shown in Figure 25.13 has coolant...Ch. 25 - Prob. 13RQCh. 25 - Why do cutting fluids for drilling usually have...Ch. 25 - How does a gang-drilling machine differ from a...Ch. 25 - Prob. 16RQCh. 25 - How does the thrust force vary with feed? Why?Ch. 25 - Holding the workpiece by hand when drilling is not...Ch. 25 - Prob. 19RQCh. 25 - In terms of thrust, what is unusual about the...Ch. 25 - Prob. 21RQCh. 25 - Prob. 22RQCh. 25 - What are the primary purposes of reaming?Ch. 25 - What are the advantages of shell reamers?Ch. 25 - A drill that operated satisfactorily for drilling...Ch. 25 - What precautionary procedures should be used when...Ch. 25 - What is the advantage of a spade drill? Is it...Ch. 25 - Prob. 28RQCh. 25 - Why does drill feed increase with drill size?Ch. 25 - Suppose you specified a drilling feed rate that...Ch. 25 - Suppose you wanted to drill a 1.5-in.-diameter...Ch. 25 - How much time will be required to drill the hole...Ch. 25 - What is the metal removal rate when a...Ch. 25 - If the specific horsepower for the steel in...Ch. 25 - If the specific power of an AISI 1020 steel of...Ch. 25 - Prob. 6PCh. 25 - Assume that you are drilling eight holes, equally...Ch. 25 - What machining difficulties should this process...Ch. 25 - Why were the distances between the holes too...
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- WILL UPVOTE. NEED THE ANSWER IN 10MINUTES.arrow_forward-How many holes require drilling? -What is the center to center distance of the 6mm tapped holes? -What tap drill is used for holes marked Z? -How many surfaces are machine finished? -What are the dimensions of the face marked F & C? -What are the dimensions have symbols A, E &, B -In what dihedral angle is the drawing made? -What is the max and min dimensions of D -What is the tolerance of measurement D?arrow_forwardHow can hole depth be controlled during drilling operations?arrow_forward
- Answer the following questions by circling True or False. 9. Ceramics are the hardest tool materials in the world. 10. The smaller the cutting ratio, the larger the cutting deformation. 11. A shaper can be used for maching flat surfaces in horizontal and angular directions. 12. During the return stroke of the shaper, the cutting tool will simply be sliding... 13. The cutting speed of the hydraulic shaper changes throughout most of the cutting stroke. 14. Arbour-mounted cutters are used in vertical axis machines to generate flat surfaces... 15. Dividing head is an important attachment that is used to divide the periphery of the workpiece into a number of divisions to machine surfaces.. () () ()arrow_forwardWhat is the function of a drill bushing? In cases where a drill bushing is not used, how is the jig treated to guide the drill?arrow_forwardQuestion 3 The Extrude Cut feature in SOLIDWORKS can be used to create both through holes (holes that go all the way through a part) and counter bore holes (holes that do not go all the way through a part), such as the holes shown in the 2-dimensional image below. True False Counterborearrow_forward
- . What Do You Mean By Drill Sleeve And A Drill Socket ?arrow_forward2. Through hole of 12 mm diameter is to be drilled in a steel plate of 20 mm thickness, drilled spindle speed is 20 m/min, feed 0.25 mm/rev and drill point angle is 120°, the amount of material removed at the first 10 sec after full engagement of drill will be mm/sec. (a) 2300, (b) 2400, (c) 2500, (d) 2600, (e) 2700arrow_forwardHow does cutting small-diameter pipe differ from cutting large-diameter pipe?arrow_forward
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