DeGarmo's Materials and Processes in Manufacturing
12th Edition
ISBN: 9781118987674
Author: J. T. Black, Ronald A. Kohser
Publisher: WILEY
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 25, Problem 1RQ
What functions are performed by the flutes on a standard twist drill?
Expert Solution & Answer
To determine
The functions performed by the flutes on a standard twist drill.
Explanation of Solution
Cutting Tools used in drilling operation which can be used for different operations such as removing materials, creating holes. It is designed like a circular cross-section, containing cutting tool in the front having torsion or twist like shape. There are spaces in between the twist called flutes.
These drill bits are made up of different materials like High-speed steel, cobalt steel, tungsten steel, high carbon steel. The selection of the drill bit depends upon the material of the specimen.
The spaces in between the twist of the drill bit are called flutes, and the primary function of the flute is to pull out the removed material from the hole without wearing the tip of the drill bit. Another use of the flutes is to provide the cooling oil efficiently when the drill bit is inside the hole to prevent the wearing of the tool.
Want to see more full solutions like this?
Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
A 3-in.-radius drum is rigidly attached to a 5-in.-radius drum as shown. One of the drums rolls without sliding on the surface shown, and a cord is wound around the other drum. Knowing that at the instant shown. point A has a velocity of 4.875 in./sin./s and an acceleration of 15.50 in./s2in./s2 , both directed to the right, determine the accelerations of points A, B, and C of the drums.
The cord is wound around the 3 inch radius drum. Point B is at the bottom of the 5 inch radius drum. Point A is at the bottom of the 3 inch radius drum. Point C is on the right edge of the 5 inch radius drum.
The accelerations of point B is______ in./s2 .
The accelerations of point A is ______ in./s2 ______ ⦨ °. at what angle/direction
The accelerations of point C is______ in./s2 ______ ⦪ °. at what angle/direction?
A total volume of mud is 1,000 bbls that has a mud weight of 9.1 ppg. Calculate the volumefractions of water, Bentonite, and the weight of Bentonite used. Density of powder Bentonite is 156 lbm/ft3
A 3-in.-radius drum is rigidly attached to a 5-in.-radius drum as shown. One of the drums rolls without sliding on the surface shown, and a cord is wound around the other drum. Knowing that at the instant shown. point A has a velocity of 4.875 in./sin./s and an acceleration of 15.50 in./s2in./s2 , both directed to the right, determine the accelerations of points A, B, and C of the drums.
The cord is wound around the 3 inch radius drum. Point B is at the bottom of the 5 inch radius drum. Point A is at the bottom of the 3 inch radius drum. Point C is on the right edge of the 5 inch radius drum.
The accelerations of point B is ______ in./s2
The accelerations of point A is ______ in./s2 _____⦨ °.
The accelerations of point C is _______ in./s2 ____ ⦪ °.
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
Select a subject with which you are familiar and design a pseudocode for giving directions in that subject. In ...
Computer Science: An Overview (13th Edition) (What's New in Computer Science)
Consider the following skeletal C program: void fun1(void); / prototype / void fun2(void); / prototype / void f...
Concepts Of Programming Languages
In Exercises 41 through 46, identify the errors.
Introduction To Programming Using Visual Basic (11th Edition)
A geometric progression is defined as the product of the first n integers and is denoted as geometric(n)=i=1ni ...
Java: An Introduction to Problem Solving and Programming (8th Edition)
Circuit Board Price An electronics company sells circuit boards at a 35 percent profit. Write a program that wi...
Starting Out with C++ from Control Structures to Objects (9th Edition)
17–1C A high-speed aircraft is cruising in still air. How does the temperature of air at the nose of the aircra...
Thermodynamics: An Engineering Approach
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
- The average heat transfer coefficent for airflow over an odd shaped body is to be determined by mass transfer measurements and using the Chilton-Colburn analogy btwn heat and mass transfer. The experiemnt is conducted by blowing dry air at 1 atm at a free-stream velocity of 2 m/s over a body covered with a layer of naphthalene. The surface area of the body is .75 m^2, and it is observed that 100 g of maphthalene has sublimated in 45 min. During the experiemnt, both the body and the air were kep at 25oC, at which the vapor pressure and mass diffusivity of naphthalene are 11 Pa and Dab=0.61*10^-5 m^2/s respectively. Determine the heat transfer coefficent under the same flow conditions over the same geometry.arrow_forwardAuto Controls Design a PID controller for thefollowing system so that the modified system satisfies the followingspecifications : 1. settling time ,ts = 1.96 s and % Overshoot Mp = 70.7 % Assume a non-dominant pole at s = -15 to solve the problem The plot the compensated andThen plot the uncompensated system in MATLAB. what can you see from the plot ? what is your observation ?arrow_forwardAuto Controls The figure is a schematic diagram of an aircraft elevator control system. The input to the systemin the deflection angle of the control lever , and the output is the elevator angle phi.show that for each angle theta of the control lever ,there is a corresponding elevator angle phi. Then find Y(s)/theta(s) and simplify the resulting transfer function . Also note from the diagram that y and phi is relatedarrow_forward
- Fresh water is planned to be pumped in a certain pipe at constant pumping rate of 6.5 gpm. If water density and viscosity are 8.34 ppg and 1.0 cp, what is the minimum pipe inside diameter that make the fluid flow behave as turbulent flow?arrow_forwardUSE MATLAB ONLY provide typed code Turbomachienery . GIven: vx = 185 m/s, flow angle = 60 degrees, R = 0.5, U = 150 m/s, b2 = -a3, a2 = -b3 Find: velocity triangle , a. magnitude of abs vel leaving rotor (m/s) b. flow absolute angles (a1, a2, a3) 3. flow rel angles (b2, b3) d. specific work done e. use code to draw vel. diagram Use this code for plot % plots Velocity Tri. in Ch4 function plotveltri(al1,al2,al3,b2,b3) S1L = [0 1]; V1x = [0 0]; V1s = [0 1*tand(al3)]; S2L = [2 3]; V2x = [0 0]; V2s = [0 1*tand(al2)]; W2s = [0 1*tand(b2)]; U2x = [3 3]; U2y = [1*tand(b2) 1*tand(al2)]; S3L = [4 5]; V3x = [0 0]; V3r = [0 1*tand(al3)]; W3r = [0 1*tand(b3)]; U3x = [5 5]; U3y = [1*tand(b3) 1*tand(al3)]; plot(S1L,V1x,'k',S1L,V1s,'r',... S2L,V2x,'k',S2L,V2s,'r',S2L,W2s,'b',U2x,U2y,'g',... S3L,V3x,'k',S3L,V3r,'r',S3L,W3r,'b',U3x,U3y,'g',...... 'LineWidth',2,'MarkerSize',10),... axis([-1 6 -4 4]), ... title('Velocity Triangle'), ... xlabel('x'),ylarrow_forwardConsider a 12 cm internal diameter, 14 m long circular duct whose interior surface is wet. The duct is to be dried by forcing dry air at 1 atm and 15oC throught it at an average velocity of 3m/s. The duct passes through a chilled roo, and it remains at an average temp of 15oC at all time. Determine the mass transfer coeeficient in the duct.arrow_forward
- Consider a 5m by 5m wet concret patio with an average water film thickness of .2mm. Now wind at 50 km/h is blowing over the surface. If the air is at 1 atm, 15oC and 35 percent relative humidity, determine how long it will take for the patio to completely dry.arrow_forwardA double thread worm gear has a pitch of 1 1/8 and a pitch diameter of 3 in. It has a coefficient of friction of 0.20 and normal angle (pressure angle) of 14.5o. The worm is supplied by 12 hp at 1200 rpm motor. Find the tangential force on the gear. The worm is left hand threads.arrow_forwardA double thread worm gear has a pitch of 1 1/8 and a pitch diameter of 3 in. It has a coefficient of friction of 0.20 and normal angle (pressure angle) of 14.5o. The worm is supplied by 12 hp at 1200 rpm motor. Find the tangential force on the gear. The worm is left hand threads.arrow_forward
- A 2 mm thick, 5L vessel made of nickel is used ot store hydrogen gas at 358 K and 300 kPa. If the total inner surface area of the vessel is 1600 cm^2, determine the rate of gas loss from the nickel vessel via mas diffusion. Also, determine the fraction of the hydrogen lost by mass diffusion after one year of storage.arrow_forward< 7:19 The 1st homework 6. Multiple Choice a)唧筒机构 5G31 Which of followings can be th e kinematic diagram of this mechanism? A B Darrow_forward2:54 The 1st homework . 5G 27 b)回转柱塞泵机构 Which of followings can be the kinematic diagram of this mechanis m? A B D Carrow_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