Precision Machining Technology (MindTap Course List)
2nd Edition
ISBN: 9781285444543
Author: Peter J. Hoffman, Eric S. Hopewell, Brian Janes
Publisher: Cengage Learning
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Question
Chapter 4.3, Problem 14RQ
To determine
The number of turns a tap must turn to produce
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Students have asked these similar questions
0,5 mm
450 mm
350 mm
Bronze
A =
1500 mm²
E = 105 GPa
प
21.6 × 10-PC
Aluminum
A = 1800 mm²
£ = 73 GPa
=
a 23.2 × 10-PC
PROBLEM 2.58
Knowing that a 0.5-mm gap exists when the temperature is 24°C,
determine (a) the temperature at which the normal stress in the
aluminum bar will be equal to -75 MPa, (b) the corresponding exact
length of the aluminum bar.
0.5 mm
450 mm
-350 mm
Bronze
Aluminum
A
1500 mm²
A
1800 mm²
E
105 GPa
E
73 GPa
K
=
21.6 X 10 G <
= 23.2 × 10-G
PROBLEM 2.59
Determine (a) the compressive force in the bars shown after a
temperature rise of 82°C, (b) the corresponding change in length of
the bronze bar.
The truss shown below sits on a roller at A and a pin at E. Determine the magnitudes of the forces in truss members GH, GB, BC and GC. State whether they are in tension or compression or are zero force members.
Chapter 4 Solutions
Precision Machining Technology (MindTap Course List)
Ch. 4.1 - Upright drill presses are available in _______ and...Ch. 4.1 - List two general types of upright drill press...Ch. 4.1 - Explain how the size of an upright drill press is...Ch. 4.1 - Briefly describe the term sensitive drill press.Ch. 4.1 - Briefly describe a gang drill press and its...Ch. 4.1 - When would a radial-arm drill press most likely be...Ch. 4.1 - Briefly describe a micro drill press and its...Ch. 4.2 - What are the two main materials used to make...Ch. 4.2 - What two types of shanks are commonly found on...Ch. 4.2 - Name three functions of the flutes on a twist...
Ch. 4.2 - Name two types of flute styles for machine...Ch. 4.2 - Prob. 5RQCh. 4.2 - What is the major difference between counterboring...Ch. 4.2 - What must be used to secure a workpiece to an...Ch. 4.2 - What devices are used to elevate a workpiece to...Ch. 4.2 - If 50 parts measuring 1" I" 3" each needed a...Ch. 4.2 - Which would be the best workholding device for...Ch. 4.2 - Which would be the best workholding device for...Ch. 4.2 - Which would be the best workholding device for...Ch. 4.3 - List five drill press safety guidelines.Ch. 4.3 - Briefly define the term cutting speed.Ch. 4.3 - What unit of measure is used to define cutting...Ch. 4.3 - What is feed, and how is feed stated for drill...Ch. 4.3 - Briefly describe two methods for locating hole...Ch. 4.3 - What is spotting and why is it performed?Ch. 4.3 - What is pecking, or peck drilling?Ch. 4.3 - Briefly contrast the speed and feed differences...Ch. 4.3 - What drill press component can be used to control...Ch. 4.3 - Calculate feed depth for a 90-degree countersink...Ch. 4.3 - Calculate feed depth for an 82-degree countersink...Ch. 4.3 - What benefit does tapping on the drill press offer...Ch. 4.3 - How many turns must a 1/4-20 tap be turned into a...Ch. 4.3 - Prob. 14RQ
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