Student Workbook and Project Manual for Hoffman/Hopewell's Precision Machining Technology
3rd Edition
ISBN: 9798214105710
Author: Peter J. Hoffman and Eric S. Hopewell
Publisher: Cengage Learning US
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Textbook Question
Chapter 3.6, Problem 10RQ
Name two types of tap wrenches.
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Students have asked these similar questions
Problem 1. Rod OAB is rotating counterclockwise with the constant angular velocity of 5 rad/s.
In the position shown, collar P is sliding toward A with the constant speed of 0.8 m/s relative to
the rod. Find the velocity of P and the acceleration of P.
y
B
3
P
300 mm
A
-
Answer: Up = -0.861 − 0.48ĵ™; ā₂ = 4.8î −1.1ĵ
m
A bent tube is attached to a wall with brackets as shown. . A
force of F = 980 lb is applied to the end of the tube with
direction indicated by the dimensions in the figure.
a.) Determine the force vector F in Cartesian components.
→
→
b.) Resolve the force vector F into vector components
parallel and perpendicular to the position vector rDA.
Express each of these vectors in Cartesian components.
2013 Michael Swanbom
cc 10
BY NC SA
g
x
B
A
א
Z
FK
с
кая
b
Values for dimensions on the figure are given in the table
below. Note the figure may not be to scale. Be sure to align
your cartesian unit vectors with the coordinate axes shown in
the figure.
Variable
Value
a
8 in
12 in
с
15 in
36 in
h
23 in
g
28 in
a. F =
b. FDA =
= (
+
k) lb
k) lb
FIDA =
2 +
k) lb
Problem 4. Part 1
100 mm
C
@
PROBLEM 15.160
Pin P slides in the circular slot cut in the plate shown at a
constant relative speed u = 500 mm/s. Assuming that at the
instant shown the angular velocity of the plate is 6 rad/s and
is increasing at the rate of 20 rad/s², determine the
acceleration of pin P when = 90°.
150 mm
is NOT zero. Answer: a = 3.4î −15.1ĵ m/s² )
P
(Hint: u is a constant number, which means that the tangential component of F is zero.
However, the normal component of
Part2. When 0 = 120°, u = 600 mm/s and is increasing at the rate of 30mm/s², determine the
acceleration of pin P.
Chapter 3 Solutions
Student Workbook and Project Manual for Hoffman/Hopewell's Precision Machining Technology
Ch. 3.1 - Information such as tolerances and scale can be...Ch. 3.1 - What view of a drawing usually shows the most...Ch. 3.1 - Prob. 3RQCh. 3.1 - The line type used to show edges of an object that...Ch. 3.1 - What line type is used to show edges of an object...Ch. 3.1 - What two line types work together to show sizes on...Ch. 3.1 - Identify the line types labeled in the print...Ch. 3.1 - Define and briefly describe the following...Ch. 3.1 - A dimension listed on an engineering drawing is...Ch. 3.1 - List and briefly describe the three types of...
Ch. 3.1 - Briefly describe the difference between a...Ch. 3.1 - The relationship between sizes of mating parts is...Ch. 3.1 - What does GDT stand for?Ch. 3.1 - A plane used as a reference for dimensions is...Ch. 3.1 - A GDT symbol and the amount of tolerance are shown...Ch. 3.1 - What are the five categories of symbols used in...Ch. 3.1 - What is a feature of size?Ch. 3.1 - Briefly explain the benefit of a position...Ch. 3.2 - Prob. 1RQCh. 3.2 - What is the purpose of layout fluid (dye)?Ch. 3.2 - Prob. 3RQCh. 3.2 - Briefly define a scriber and its use.Ch. 3.2 - What two angles can be laid out with the...Ch. 3.2 - What two tasks can a divider be used to perform?Ch. 3.2 - What safety precautions should be observed when...Ch. 3.2 - What would the divider setting be to scribe a...Ch. 3.2 - What would the divider setting be to scribe an arc...Ch. 3.2 - Prob. 10RQCh. 3.2 - Prob. 11RQCh. 3.2 - Briefly describe the use of a surface gage.Ch. 3.3 - What are three safety rules to observe when using...Ch. 3.3 - List three types of screwdriver tips.Ch. 3.3 - What is the advantage of using slip joint pliers?Ch. 3.3 - What is an advantage of using locking pliers?Ch. 3.3 - What are two uses for a ball peen hammer?Ch. 3.3 - What is the advantage of a soft face hammer?Ch. 3.3 - In what situation would a box-end wrench be chosen...Ch. 3.3 - List two precautions to observe when using...Ch. 3.3 - What is one method of preventing damage to work...Ch. 3.3 - List three safety precautions to be observed when...Ch. 3.3 - In which direction should hacksaw blade teeth...Ch. 3.3 - List two safety precautions that should be...Ch. 3.3 - Will a single-cut or a double-cut file remove...Ch. 3.3 - Will a single-cut or a double-cut file produce a...Ch. 3.3 - ___________ and _________ are two common filing...Ch. 3.3 - What tool is used to clean a file?Ch. 3.3 - What are the two forms of abrasives used in...Ch. 3.4 - Sawing machines can be divided into roughly four...Ch. 3.4 - The vertical band saw is particularly useful, as...Ch. 3.4 - The horizontal band saw is ideal for cutting...Ch. 3.4 - Cutting action on the power hacksaw is very...Ch. 3.4 - List three safety precautions to observe when...Ch. 3.4 - Briefly describe the process to prepare for...Ch. 3.4 - List three safety precautions to observe when...Ch. 3.4 - What type of band saw blade has HSS teeth welded...Ch. 3.4 - How many saw teeth should be engaged in the...Ch. 3.4 - Name the three different types of tooth patterns.Ch. 3.4 - What are the three types of tooth set and why is...Ch. 3.4 - The slot created in a workpiece by the saw blade...Ch. 3.4 - Explain how to use a push stick.Ch. 3.4 - Saws should be ____________ _____________ when a...Ch. 3.4 - Saw guides should be mounted ________ above the...Ch. 3.4 - Why must a band saw blade be annealed after...Ch. 3.4 - Why does a band saw blade need to be ground after...Ch. 3.4 - Clearance between the vertical band saw guides and...Ch. 3.4 - Band saw cutting speeds are given in _________.Ch. 3.5 - What is the main benefit of offhand abrasive...Ch. 3.5 - What type of metals should not be ground on a...Ch. 3.5 - Which wheel is finer, a 60 grit or a 36 grit?Ch. 3.5 - If a grinder runs at 3400 RPM and you have a wheel...Ch. 3.5 - How is a ring test performed?Ch. 3.5 - Why is it necessary to have blotters on both sides...Ch. 3.5 - The maximum distance that a spark breaker and tool...Ch. 3.5 - When should a grinding wheel be dressed?Ch. 3.5 - Where should you stand when using a grinder?Ch. 3.6 - Define drilling.Ch. 3.6 - What factors might determine when a hole must be...Ch. 3.6 - Prob. 3RQCh. 3.6 - Explain the purpose of a counterbore.Ch. 3.6 - What is the purpose of the pilot on a counterbore?Ch. 3.6 - What should be done as a drill nears the...Ch. 3.6 - Define thread as it relates to benchwork.Ch. 3.6 - Explain the major diameter of a thread.Ch. 3.6 - What is the TPI of a -20 thread?Ch. 3.6 - Name two types of tap wrenches.Ch. 3.6 - A 3/8-16 threaded hole needs to be tapped deeper....
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- Problem 5. Disk D of the Geneva mechanism rotates with constant counterclockwise angular velocity wD = 10 rad/s. At the instant when & = 150º, determine (a) the angular velocity of disk S, and (b) the velocity of pin P relative to disk S. (c). the angular acceleration of S. Disk S R=50 mm =135° |1=√ER- Disk D Partial answers: Ō = -4.08 Â rad/s ā¸ = -233 k rad/s²arrow_forwardProblem 3. In the figure below, point A protrudes from link AB and slides in the rod OC. Rod OC is rotating with angular velocity woc = 2 rad/s and aoc = 3 rad/s² in the directions shown. Find the following, remembering to clearly define your axes and the rate of rotation of the frame. a. The angular velocity of link AB and the velocity of A relative to rod OC. m (Answers: @AB is 2.9 rad/s CCW, rxy = .58! toward C) S b. The angular acceleration of link AB and the acceleration of A relative to rod OC. Answers: αAB = 7.12 rad/s² CCW, r = 6.3 m ܐܨ toward C. B C A 30° Фос 400 mm OA=500 mm docarrow_forwardProblem 2. 6 m 30° B PROBLEM 15.164 At the instant shown the length of the boom AB is being decreased at the constant rate of 0.2 m/s and the boom is being lowered at the constant rate of 0.08 rad/s. Determine (a) the velocity of Point B, (b) the acceleration of Point B. Partial answer: a = −0.049î +0.009ĵ m/s²arrow_forward
- A crate is hung by three ropes attached to a steel ring at A such that the top surface is parallel to the xy plane. Point A is located at a height of h = 121.92 cm above the top of the crate directly over the geometric center of the top surface. Use the given dimensions from the table below to perform the following calculations: →> a.) Determine the position vector IAD that describes rope AD. b.) Compute the unit vector cд that points from point C to point A. c.) If rope AB carries a tension force of magnitude FT = 760 → N, determine the force vector FT that expresses how this force acts on point A. Express each vector in Cartesian components to three significant figures. 2013 Michael Swanbom ↑z BY NC SA b x B У a D Values for dimensions on the figure are given in the following table. Note the figure may not be to scale. Be sure to align your cartesian unit vectors with the coordinate axes shown in the figure. Variable Value a 101.6 cm b 124.46 cm с 38.71 cm a. rдD = + b. ÛCA c. FT= =…arrow_forwardF3 N< Ꮎ 2 F2 -Y F1 There are 3 forces acting on the eye bolt. Force F1 acts on the XY plane has a magnitude of 536 lbf, and the angle of 0 = 38°. Force F2 acts on the YZ plane has a magnitude of 651 lbf, and the angle = 41°. Force F3 has a magnitude of 256 lb, and coordinate. = f direction angles of a 71°, B = 115°, and y = 33°. Determine the resultant force on the eye bolt. FR = ( + k) lbf FR magnitude: FR coordinate direction angle a: deg FR coordinate direction angle ẞ`: deg FR coordinate direction angle y: deg lbfarrow_forwardBall joints connect the ends of each of the struts as shown. The resulting structure supports a force of F = 1925 N which lies in the xz plane. a.) Determine the angle (in degrees) between strut AD and strut AC. b.) Determine the dimension g such that the force Fis →> perpendicular to гAC. 2013 Michael Swanbom CC BY NC SA B b C h/ L 不 g F ୮ d y LLC Values for dimensions on the figure are given in the table below. Note the figure may not be to scale. Be sure to align your cartesian unit vectors with the coordinate axes shown in the figure. Variable Value a 4.8 cm b 13.4 cm C 11.6 cm d 10.4 cm h 4.4 cm k 14.8 cm a. The angle between strut AD and strut AC is b. The dimension g is deg. cm.arrow_forward
- 13 F1 35 N = 37°. = Determine the resultant force on the eye bolt. FR = ( + FR magnitude: FR coordinate direction angle a: deg FR coordinate direction angle ẞ`: Ꭱ deg FR coordinate direction angle y: deg N k) Narrow_forwardA hollow cylinder with inner radius of 30 mm and outer radius of 50 mm is heated at the inner surface at a rate of 10^5m^2W and dissipated heat by convection from outer surface into a fluid at 80∘C with h=400 m2 KW. There is no energy generation and thermal conductivity of the material is constant at 15mKW. Calculate the temperature of inside and outside surfaces of cylinder.arrow_forwardplease read everything properly... Take 3 4 5 hrs but solve full accurate drawing on bond paper don't use chat gpt etc okkarrow_forward
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