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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Chapter 9, Problem 2CS
To determine
The desired properties for a material to be a suitable candidate for the head of a carpenter’s claw hammer.
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Hints: Find the closed loop transfer function and then plot the step response for diFerentvalues of K in MATLAB. Show step response plot for different values of K.
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37. The vertical shaft shown in Figure P12-37 is driven at a
speed of 600 rpm with 4.0 hp entering through the bevel
gear. Each of the two chain sprockets delivers 2.0 hp to
the side to drive mixer blades in a chemical reactor vessel.
The bevel gear has a diametral pitch of 5, a pitch diameter
of 9.000 in, a face width of 1.31 in, and a pressure angle
of 20°. Use SAE 4140 OQT 1000 steel for the shaft. See
Chapter 10 for the methods for computing the forces on
the bevel gear.
Figure P12-37: P37-Bevel gear drive with two chain
sprockets
Each problem includes the following details:
■Design the complete shaft, including the specification of
the overall geometry and the consideration of stress con-
centration factors. The analysis would show the minimum
acceptable diameter at each point on the shaft to be safe
from the standpoint of strength.
Homework Problems 12-24, 12-35, and 12-37 from
textbook, done in spreadsheet form. Place drawings of the
load, shear, and bending moment body diagrams…
35. The double-reduction, helical gear reducer shown in
Figure P12-35 transmits 5.0 hp. Shaft 1 is the input,
rotating at 1800 rpm and receiving power directly from an
electric motor through a flexible coupling. Shaft 2 rotates
at 900 rpm. Shaft 3 is the output, rotating at 300 rpm. A
chain sprocket is mounted on the output shaft as shown
and delivers the power upward. The data for the gears
are given in Table 12-5. Each gear has a 1412° normal
pressure angle and a 45° helix angle. The combinations of
left- and right-hand helixes are arranged so that the axial
forces oppose each other on shaft 2 as shown. Use SAE
4140 OQT 1200 for the shafts.
Figure P12-35: P35-Double-reduction helical drive
Each problem includes the following details:
■Design the complete shaft, including the specification of
the overall geometry and the consideration of stress con-
centration factors. The analysis would show the minimum
acceptable diameter at each point on the shaft to be safe
from the standpoint of…
Chapter 9 Solutions
Degarmo's Materials And Processes In Manufacturing
Ch. 9 - What is the objective of a manufacturing...Ch. 9 - What are some undesirable features of...Ch. 9 - What problems are created by the availability of...Ch. 9 - In a manufacturing environment, why should the...Ch. 9 - How has the material balance shifted in the...Ch. 9 - How have different materials enabled advances and...Ch. 9 - Discuss the interrelation between engineering...Ch. 9 - What is design?Ch. 9 - What are the three primary stages of product...Ch. 9 - What are some of the features to be considered in...
Ch. 9 - What is the benefit of requiring prototype...Ch. 9 - What sequence of activities is common to nearly...Ch. 9 - Prob. 13RQCh. 9 - What is the most frequent pitfall when seeking to...Ch. 9 - What should be the first step in any materials...Ch. 9 - In what ways does the concept of shape or geometry...Ch. 9 - Prob. 17RQCh. 9 - Describe some of the possible mechanical...Ch. 9 - How might temperature enter into the specification...Ch. 9 - What are some physical properties of materials?Ch. 9 - What are some of the important aspects of the...Ch. 9 - What are some of the possible manufacturing...Ch. 9 - Why is it important to resist jumping to the...Ch. 9 - Prob. 24RQCh. 9 - What is the difference between an absolute and...Ch. 9 - Prob. 26RQCh. 9 - Prob. 27RQCh. 9 - Prob. 28RQCh. 9 - Give an example of a product or component where...Ch. 9 - What are some possible considerations relating to...Ch. 9 - Prob. 31RQCh. 9 - Prob. 32RQCh. 9 - Prob. 33RQCh. 9 - Prob. 34RQCh. 9 - Prob. 35RQCh. 9 - Why might material selection and process selection...Ch. 9 - Give an example of where selection of a material...Ch. 9 - Why is it likely that compromise, opinion, and...Ch. 9 - Why is it likely that multiple individuals will be...Ch. 9 - Why should the design and manufacture of a...Ch. 9 - Give an example where an unexpected problem might...Ch. 9 - Prob. 42RQCh. 9 - What are some of the different types of useful...Ch. 9 - How have high�speed, high�capacity computers...Ch. 9 - Prob. 1PCh. 9 - The chalk tray on a classroom chalkboard has very...Ch. 9 - Prob. 3PCh. 9 - Examine the properties of wood, aluminum, and...Ch. 9 - Automobile body panels have been made from carbon...Ch. 9 - Prob. 6PCh. 9 - Go to the local hardware or building supply store...Ch. 9 - Prob. 8PCh. 9 - Decorative fence posts for a residential home have...Ch. 9 - The individual turbine blades used in the exhaust...Ch. 9 - Prob. 11PCh. 9 - Hockey sticks are currently available in wood,...Ch. 9 - The 2019 Corvette C8 has moved to a mid�engine,...Ch. 9 - What is the normal use or uses of this product or...Ch. 9 - Prob. 2CSCh. 9 - Prob. 3CSCh. 9 - Prob. 4CSCh. 9 - Prob. 5CSCh. 9 - Prob. 6CSCh. 9 - Would there be any concerns relating to...
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