Precision Machining Technology
3rd Edition
ISBN: 9781337795302
Author: Peter, Hoffman.
Publisher: Cengage Learning,
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Chapter 1.3, Problem 2RQ
List four personal skills beneficial to achieving success in a machining career.
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cutting
Instructions:
Do not copy the drawing.
Draw In third-angle orthographic projection, and to scale 1:1,
the following views of the hinge:
A sectional front view on A-A
A top view
⚫ A right view (Show all hidden detail)
Show the cutting plane in the top view
. Label the sectioned view
Note:
All views must comply with the SABS 0111 Code of Practice for
Engineering Drawing.
Galaxy A05s
Assessment criteria:
⚫ Sectional front view
026
12
042
66
[30]
11
10
1. Plot the moment (M), axial (N), and shear (S) diagrams as functions of z.
a)
b)
F₁ = 1250 N
F₁ = 600 N
M₁ = 350 000 N mm
F2 = 500 N
200 N
a = 600 mm
b=1000 mm
a=750 mm
b = 1000 mm
d)
M₁ = 350 000 N mm
F₁ = 600 N
F₂ =200 N
a = 600 mm
b = 1000 mm
M₁ 175 000 Nmm
F = 900 N
a-250 mm
b-1000 mm
-250 mm.
Figure 1: Schematics problem 1.
Given the following cross-sections (with units in mm):
b)
t=2
b=25
h=25
t = 1.5
b=20
b=25
t=2
I
t = 1.5
a=10
b=15
h-25
b=15
t=3
T
h=25
Figure 3: Cross-sections for problem 2.
1. For each of them, calculate the position of the centroid of area with respect to the given coordinate system
and report them in the table below.
2. For each of them, calculate the second moments of inertia I...
and I, around their respective centroid
of area and report them in the table below. Note: use the parallel axes theorem as much as possible to
minimize the need to solve integrals.
Centroid position
x
y
box
Moment of inertia
lyy
by
a)
b)
c)
d)
e)
Chapter 1 Solutions
Precision Machining Technology
Ch. 1.1 - Define the term machining.Ch. 1.1 - What is a machine tool?Ch. 1.1 - What is manufacturing?Ch. 1.1 - List four industries that depend on machining.Ch. 1.1 - What does the abbreviation CNC stand for?Ch. 1.1 - What is the purpose of the drill press?Ch. 1.1 - What machine tool produces cylindrical parts?Ch. 1.1 - Briefly describe the primary purpose of sawing...Ch. 1.1 - What machine tool is available with either...Ch. 1.1 - Abrasive machining makes use of ______ to remove...
Ch. 1.1 - What does the abbreviation EDM stand for?Ch. 1.1 - What are the two types of EDM machines?Ch. 1.1 - __________ uses a high-pressure stream of water...Ch. 1.1 - Briefly describe the principle of laser machining.Ch. 1.2 - What is an engineering drawing and what is its...Ch. 1.2 - What is the primary duty of a machine tool...Ch. 1.2 - What occupation involves preparing tools and...Ch. 1.2 - Briefly describe a CNC programmers...Ch. 1.2 - Prob. 5RQCh. 1.2 - Prob. 6RQCh. 1.2 - What career advancement opportunities exist for...Ch. 1.2 - What career area related to machining deals with...Ch. 1.2 - What occupation requires knowledge of several...Ch. 1.2 - What is metrology?Ch. 1.3 - Briefly compare and contrast technical and...Ch. 1.3 - List four personal skills beneficial to achieving...Ch. 1.3 - Explain why two of the four personal skills from...Ch. 1.3 - List four technical skills beneficial to achieving...Ch. 1.3 - Explain why two of the four technical skills from...Ch. 1.3 - What is the purpose of CTE or vocational...Ch. 1.3 - What are the similarities and differences between...Ch. 1.3 - What is an apprenticeship?Ch. 1.3 - What are two different ways that apprenticeships...Ch. 1.3 - What is a journeyperson?Ch. 1.3 - What does NIMS stand for?Ch. 1.3 - Discuss how NIMS certification is different from...Ch. 1.3 - Briefly describe a portfolio and give an example...
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- Problem 1: Analyze the canard-wing combination shown in Fig. 1. The canard and wing are made of the same airfoil section and have AR AR, S = 0.25, and = 0.45% 1. Develop an expression for the moment coefficient about the center of gravity in terms of the shown parameters (, and zg) and the three-dimensional aerodynamic characteristics of the used wing/canard (CL C and CM). 2. What is the range of the cg location for this configuration to be statically stable? You may simplify the problem by neglecting the upwash (downwash) effects between the lifting surfaces and the drag contribution to the moment. You may also assume small angle approximation. Figure 1: Canard-Wing Configuration.arrow_forwardProblem 2: Consider the Boeing 747 jet transport, whose layout is shown in Fig. 2 and has the following characteristics: xoa 0.25, 8 5500/2, b 195.68ft, 27.31ft, AR, 3.57, V = 0.887 Determine the wing and tail contributions to the CM-a curve. You may want to assume CM, reasonable assumptions (e.g., -0.09, 0, -4°. i=0.0°, and i = -2.0°. Make any other 0.9).arrow_forwardZ Fy = 100 N Fx = 100 N F₂ = 500 N a = 500 mm b = 1000 mm Figure 2: Schematics for problem 3. 1. Draw the moment (M), axial (N), and shear (S) diagrams. Please note that this is a 3D problem and you will have moment (M) and shear (S) along two different axes. That means that you will have a total of 5 diagrams.arrow_forward
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