PRECISION MACHINING TECHNOLOGY PACKAGE
3rd Edition
ISBN: 9780357262788
Author: Hoffman
Publisher: CENGAGE L
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Question
Chapter 5.1, Problem 4RQ
To determine
The two main components of carriage.
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What are some ways Historical Data can be used and applied to an estimate?
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
Chapter 5 Solutions
PRECISION MACHINING TECHNOLOGY PACKAGE
Ch. 5.1 - List the four main parts of the engine lathe.Ch. 5.1 - What are the two main purposes of the lathe...Ch. 5.1 - What part of the lathe is used to set the feed...Ch. 5.1 - Prob. 4RQCh. 5.1 - Prob. 5RQCh. 5.1 - What is the purpose of the leads crew of a lathe?Ch. 5.1 - What two functions can the lathe tailstock...Ch. 5.1 - The standard taper in most lathe tailstocks is the...Ch. 5.1 - Define the swing and the bed length of a lathe.Ch. 5.2 - What is the special name for the type of jaw-type...
Ch. 5.2 - The most common variation of the above chuck has...Ch. 5.2 - Name two material shapes that can be properly held...Ch. 5.2 - List two advantages of using a self-centering...Ch. 5.2 - Name two material shapes that can be properly held...Ch. 5.2 - List three benefits of holding a workpiece between...Ch. 5.2 - List three potential advantages of using an...Ch. 5.2 - List three characteristics of a workpiece that...Ch. 5.2 - What type of mandrel would be ideal for gripping a...Ch. 5.2 - Name the type of tailstock center that raid be...Ch. 5.2 - What two auxiliary devices can be used to...Ch. 5.2 - Explain the differences between the two auxiliary...Ch. 5.2 - Name the device that is used to transmit the...Ch. 5.2 - Which two tool posts are the most efficient if...Ch. 5.2 - What is the major advantage of using...Ch. 5.2 - What direction is a right-hand turning tool...Ch. 5.2 - What is an inscribed circle related to carbide...Ch. 5.2 - Would a 0.010 or 0.031 tool nose radius be...Ch. 5.2 - Which device may be used for either toolholding or...Ch. 5.3 - If a 0.050" depth of cut is taken on the diameter...Ch. 5.3 - A lathe cross slide uses a diameter-reading...Ch. 5.3 - In what units are feed rates measured for lathe...Ch. 5.3 - Are deeper cuts used for roughing or finishing...Ch. 5.3 - Calculate spindle RPM and machining time for...Ch. 5.3 - List three safety precautions related to clothing...Ch. 5.3 - What two materials are most commonly used for...Ch. 5.3 - What feature of a lathe cutting tool has a direct...Ch. 5.3 - Is a left-hand or right-hand tool normally used...Ch. 5.3 - What part of the lathe is used to feed the tool...Ch. 5.3 - When facing, why should the tool not be fed past...Ch. 5.3 - Should a left-hand or right-hand tool be used when...Ch. 5.3 - When and how should chips he removed from the work...Ch. 5.3 - What are two reasons for center drilling on the...Ch. 5.3 - When drilling and reaming on the lathe, how are...Ch. 5.3 - How can hole depth be controlled during drilling...Ch. 5.3 - What are two reasons boring may be selected to...Ch. 5.3 - Why must extra care be taken when performing...Ch. 5.3 - How can a tap be aligned when threading a hole on...Ch. 5.3 - Briefly define form cutting.Ch. 5.3 - How do grooving and cutoff speeds compare to...Ch. 5.3 - How can tool binding be overcome when cutting deep...Ch. 5.3 - List the two basic knurl patterns.Ch. 5.3 - How is knurling different from other lathe...Ch. 5.3 - List and briefly describe the two different types...Ch. 5.4 - The distance of actual contact of two mating...Ch. 5.4 - What feature of mating threads determines the...Ch. 5.4 - How many classes of fit are there in the Unified...Ch. 5.4 - Determine the major diameter limits for the...Ch. 5.4 - Determine the minor diameter limits for the...Ch. 5.4 - Determine the pitch diameter limits for the...Ch. 5.4 - Determine the approximate compound-rest in-feed...Ch. 5.4 - What is the name for the rotating device that...Ch. 5.4 - When threading, what is the reason for feeding the...Ch. 5.4 - Prob. 10RQCh. 5.4 - Why should the depth of cut be reduced for each...Ch. 5.4 - What dimension of the thread is measured by using...Ch. 5.4 - What measuring tool is used to visually inspect...Ch. 5.4 - List two applications of Acme threads.Ch. 5.4 - What type of thread is machined on a tapered...Ch. 5.5 - Briefly define a taper.Ch. 5.5 - What is the difference between an included angle...Ch. 5.5 - What does TPI stand for in relation to tapers?Ch. 5.5 - What are the TPI and TPF of a part with end...Ch. 5.5 - What are the corresponding centerline and included...Ch. 5.5 - What is the corresponding centerline angle of a...Ch. 5.5 - What is the limitation of the tool bit taper...Ch. 5.5 - What must be known to use the compound-rest taper...Ch. 5.5 - What taper turning methods allow use of the lathes...Ch. 5.5 - What two steps can be taken to eliminate backlash...Ch. 5.5 - The TPI specified on a print is 0.030". If...Ch. 5.5 - If TPF is 0.42", how much movement should register...Ch. 5.5 - What is the benefit of using the offset tailstock...Ch. 5.5 - What are two ways to reduce uneven pressure on...Ch. 5.5 - Calculate tailstock setover for a 13.5" part with...
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- 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.arrow_forwardProblem 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_forward
- Problem 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_forwardA 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_forward
- Ball 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_forward13 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_forward
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