Degarmo's Materials And Processes In Manufacturing
13th Edition
ISBN: 9781119492825
Author: Black, J. Temple, Kohser, Ronald A., Author.
Publisher: Wiley,
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 25, Problem 12RQ
The drill shown in Figure 25.13 has coolant passages in the flutes. What is the purpose of these holes?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
23
The special hollow drill bits are used in core drilling.
Select one:
True
False
1. If a machinist wanted to drill a % inch hole in a piece of machine steel using a high speed steel
drill. At what speed in revolutions per minute should he operate the drill press?
2. Find the revolutions per minute of an 8 mm drill if it is used to cut an aluminum workpiece using
a high carbon steel drill.
3. The rpm setting of the drill press is set to 600 rpm. What is the maximum diameter in inches of a
high speed drill if it is used to drill a tool steel material?
4. A drill press has the following rpm settings; 350, 600, 1100, & 1600. What rpm setting must be
used if a 15 mm high speed steel drill is used to cut brass workpiece?
5.
A machine operator drills a hole of a 3/8 inch diameter to a stainless steel using a carbon steel
drill. He sets the drill press rpm setting to 900 rpm. Is he operating at correct setting? If not,
then what must be the correct rpm setting considering that the machine has the following rpm
settings of 300, 600, 900, 1200, and 1800?
Find the commercial tap drill size for 1⁄2”-20 NF bolt.
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...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
Neglect the mass of the motor and pulleys.
Engineering Mechanics: Dynamics (14th Edition)
24. If we increase the temperature in a reactor by 90 degrees Fahrenheit [°F], how many degrees Celsius [°C] wi...
Thinking Like an Engineer: An Active Learning Approach (3rd Edition)
Determine the resultant internal normal force, shear force, and bending moment at point C in the beam.
Mechanics of Materials
Determine the reactions at the supports. Prob. 4-6
Statics and Mechanics of Materials (5th Edition)
Determine the tension developed in cables AB, AC, and AD.
Engineering Mechanics: Statics
Compute points on the velocity profile from the pipe wall to the centerline of a 2 -in Schedule 40 steel pipe i...
Applied Fluid Mechanics (7th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- Briefly describe the term sensitive drill press.arrow_forwardDesign a jig to drill 8 holes of 10 mm diameter in a PCD of 240 mm circular plate of 300 mm outer diameter with 20 mm thicknessarrow_forward11 In uptight drill machine, the power is transmitted from electric motor to spindle with help of belt and pulley system. Select one: True Falsearrow_forward
- Briefly describe a micro drill press and its purpose.arrow_forward10. What are the component of pressure loss of drilling fluids flow for a well drilling? What's the objective of drilling hydraulics calculations? 11. What are the principle of high-pressure improving drilling rate in petroleum drilling? 12. How to select the weight on bit and rotary speed for both tricone bit and PDC bit?arrow_forwardWhat drill press component can be used to control counterbore depth?arrow_forward
- Sketch and explain any four different types of drill bits used in various drilling operationsarrow_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_forwardAdvantage and characteristics of turbine that used in dirictional drillingarrow_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_forwardThe part in Figure 1 is to be drilled on a turret-type drill press. The part is 15.0 mm thick. Threedrill sizes will be used: 8 mm, 10 mm, and 12 mm, which are to be specified in the part programby tool turret positions TO1, T02, and T03. All tooling is high speed steel. Cutting speed = 75mm/min and feed = 0.08 mm/rev. Use the lower-left corner of the part as the origin in the x-y axissystem. Write the part program in the word address format using absolute positioning.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_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Precision Machining Technology (MindTap Course Li...Mechanical EngineeringISBN:9781285444543Author:Peter J. Hoffman, Eric S. Hopewell, Brian JanesPublisher:Cengage Learning
Precision Machining Technology (MindTap Course Li...
Mechanical Engineering
ISBN:9781285444543
Author:Peter J. Hoffman, Eric S. Hopewell, Brian Janes
Publisher:Cengage Learning
HOME SHOP JIGS & FIXTURES PART 1, TYPES OF JIGS & ACCESSORIES AND THE THEORIE BEHIND THE TOOLS; Author: THATLAZYMACHINIST;https://www.youtube.com/watch?v=EXYqi42JimI;License: Standard Youtube License