dr jekyll and mr hyde summary chapter 4
Mechanisms and Mechanical Devices Sourcebook - Chapter 3
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22/10/2012, 14:26
... photoemitter and photoreceiver.
Sclater Chapter 3 5/3/01 10:23 AM Page 90
64
Sclater Chapter 3 5/3/01 10:20 AM Page 64
81
Fig. 19 A paste belt applicator passes around the
pulley in a pastepot and slides ... lever, and is removed from the chute by a vibrat-
ing table.
Sclater Chapter 3 5/3/01 10:19 AM Page 60
84
Automatic Stopping Mechanisms (continued)
Sclater Chapter 3 5/3/01 10:22 AM Page 84
57
The ... machine-driving shaft.
Sclater Chapter 3 5/3/01 10:22 AM Page 87
66
Fig. 3 In another type of action, the forward and return strokes are accomplished by a suitable mechanism, while the raising and...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 4
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... four-bar linkages, 00
1
PQ.
Sclater Chapter 4 5/3/01 10 :44 AM Page 102
CHAPTER 4
RECIPROCATING AND
GENERAL-PURPOSE
MECHANISMS
Sclater Chapter 4 5/3/01 10 :44 AM Page 93
Fast Cam-Follower Motion
Fast ... every lobe on gear
4, and T
3
/T
4
= L
3
/L
4
= 2/3, where T
3
and
T
4
are the numbers of teeth on gears 3
and 4. T
1
and T
2
will denote the numbers
of teeth on gears
1 and 2.
Next, select ... number of lobes
L
3
and L
4
on
the gears
3 and 4. In the drawings, L
3
= 2
and
L
4
= 3. Any two lobes on the two
gears (i.e., any two lobes of which one is
on one gear and the other on the...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 5
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... 11 :45 AM Page 138
1 34
TWELVE EXPANDING AND CONTRACTING DEVICES
Parallel bars, telescoping slides, and other devices
that can spark answers to many design problems.
Fig. 1
Figs. 1 and 2 Expanding ... lever and cam drive for a tire gage.
Fig. 3 A lever and sector gear in a differential pressure gage.
Fig. 4 A sector gear drive for an aircraft air-
speed indicator.
Fig. 5 A lever, cam, and cord ... slides, friction drives, and gears.
Fig. 1 An axial screw with a rack-actuated gear (A) and an articulated driving rod (B)
are both irreversible movements, i.e., the driver must always drive.
Fig....
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Mechanisms and Mechanical Devices Sourcebook - Chapter 6
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22/10/2012, 14:26
... their seats.
Sclater Chapter 6 5/3/01 12:25 PM Page 191
CHAPTER 6
SPRING, BELLOW,
FLEXURE, SCREW, AND
BALL DEVICES
Sclater Chapter 6 5/3/01 12: 24 PM Page 173
installed and integrated into a ... about
0 .4 A linear spring rate and high load
resistance with small deflections.
For height to spring ratios between
0.8 and 1.0—An almost linear spring rate
for fasteners and bearing and in stacks.
For ... member (knob, wheel, handle), threaded device
(screw-nut set), and sliding device (plunger-guide set).
Sclater Chapter 6 5/3/01 12:25 PM Page 1 94
FLAT SPRINGS IN MECHANISMS
1 74
Constant force is...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 7
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22/10/2012, 14:26
... radii
r
1
,
r
3
, and r
4
. One such piece is shown in
Fig. 7. The templates have hubs that fit
into the drilled holes at
0
1
, 0
3
, and 0
4
.
Next the arcs
7-1, 3 -4, and 5-6 are filed
with ... r
4
for
facilitating hand filing.
Sclater Chapter 7 5/3/01 12:33 PM Page 2 04
220
Fig. 4( A) Pressures and temperature indica-
tors. A pressure change causes the diaphragm
and sheave to move vertically and the ... 3-
4 with center at 0
3
, arc 4- 5 with center at
0
1
, arc 5-6 with center at 0
4
, arc 7-1 with
center at
0
1
, and the straight lines 2-3 and
6-7. The method calls for a combination
of drilling,...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 8
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22/10/2012, 14:26
... PLANETARY DRIVES
PLANOCENTRIC DRIVE
WOBBLE-GEAR DRIVE
Sclater Chapter 8 5/3/01 12 :44 PM Page 2 74
287
RATCHET-TOOTH SPEED-CHANGE DRIVE
An in-line shaft drive, with reduction ratios of 1:1 and 1:16 ... causes one complete nutation of the
Sclater Chapter 8 5/3/01 12 :42 PM Page 244
249
Sphere -and- disk drives (Figs. 12 and
13).
The speed variations in the drive
shown in Fig. 12 are obtained by chang-
ing ... retainer.
Sclater Chapter 8 5/3/01 12 :43 PM Page 260
CHAPTER 8
GEARED SYSTEMS AND
VARIABLE-SPEED
MECHANISMS
Sclater Chapter 8 5/3/01 12 :42 PM Page 241
256
VARIABLE-SPEED FRICTION DRIVES
Fig. 2...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 9
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22/10/2012, 14:26
... feeding tasks and counting.
3 14
Fig. 1 A double-spring clutch drive.
Fig. 2 A basic spring clutch.
Fig. 3 A full-wave rectification drive.
Fig. 4 A shuttle-pinion drive.
Sclater Chapter 9 5/3/01 ... positive clockwise
drive to the driven planet carrier is established.
Fig. 4 Pawl and Ratchet Clutch: (External Control) The driving
ratchet of this clutch is keyed to the driving shaft, and the pawl ... constant angle.
Sclater Chapter 9 5/3/01 12:57 PM Page 317
336
LINKAGES FOR BAND CLUTCHES
AND BRAKES
Fig. 1 An outside band
clutch operated by a roller
and cone.
Fig. 2 An outside band
clutch made...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 10
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22/10/2012, 14:26
... machinery and protect
it and its operator.
Actuators Linear mechanical switches
Sclater Chapter 10 5/3/01 1:08 PM Page 356
CHAPTER 10
TORQUE-LIMITING,
TENSIONING, AND
GOVERNING DEVICES
Sclater Chapter ... devices.
The hydraulic operation is exactly the
same as that described for the hydraulic
drives.
Sclater Chapter 10 5/3/01 1:08 PM Page 353
A band brake intended to obtain a
friction drag will give ... rollers,
push-rods, and traveling nuts, are described and illustrated.
358
Sclater Chapter 10 5/3/01 1:08 PM Page 358
342
TORQUE-LIMITERS PROTECT
LIGHT-DUTY DRIVES
Light-duty drives break down...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 11
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22/10/2012, 14:26
... CHAPTER 11
PNEUMATIC AND
HYDRAULIC MACHINE
AND MECHANISM
CONTROL
Sclater Chapter 11 5/3/01 1:15 PM Page 369
375
Fig. 8 The housing ... the related components and linkages. The nested capsule (Fig. 4) requires
less space and can be designed to withstand large external overpressures without damage.
Sclater Chapter 11 5/3/01 1:16 ... motor.
Sclater Chapter 11 5/3/01 1:16 PM Page 392
40 2
INSTANT MUSCLE WITH PYROTECHNIC POWER
Cartridge-actuated devices generate a punch that cuts cable and pipe,
shears bolts for fast release, and provides...
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- 0
Mechanisms and Mechanical Devices Sourcebook - Chapter 13
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22/10/2012, 14:26
... establishes points A′
2
, A′
3
and
A′
4
, but here A′
3
and A′
4
coincide because of symmetry of A
3
and A
4
about A
0
B
0
.
4. Draw lines
A
1
A′
2
and A
1
A′
4
, and the perpendicular bisectors
of ... 4/ 0 .40 6 74 =
9.8 343 and
a = 15.127 in., b = 4 in., c =
10 .44 0 in., and
d = 10. 049 in., which is
very close to the proportions used. The
maximum deviation of the transmission
angle from 90º is 47 .98º.
This ... (A).
Fig. 4 Designing a toggle to lie within
space boundaries W and X. It can be
shown that for maximum snap-action, sin θ
= X/W.
Sclater Chapter 13 5/3/01 1:33 PM Page 45 4
44 5
DESIGNING CRANK -AND- ROCKER...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 14
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22/10/2012, 14:26
... can
46 6
Sclater Chapter 14 5/3/01 1 :44 PM Page 46 6
46 4
SOFTWARE IMPROVEMENTS
EXPAND CAD CAPABILITIES
Computer Aided Design (CAD) is a computer-based technology
that allows a designer to draw and ... thicker,
and more durable components with greater height-to-width
ratios. They can withstand high pressure and temperature excur-
Sclater Chapter 14 5/3/01 1 :44 PM Page 48 4
CHAPTER 14
NEW DIRECTIONS ... circle that
is at right angles to a line drawn between the contact point and
the center of the circle.
46 7
Sclater Chapter 14 5/3/01 1 :44 PM Page 46 7
47 9
Fig. 2 Wedge Stepping Motor: A close-up...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 15
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22/10/2012, 14:26
... Technologies Group, Radford, VA
ã Ledex Actuation Products, TRW Control Systems, Vandalia OH
ã Sandia National Laboratories, Sandia Corporation, Albuquerque, NM
ã SolidWorks Corporation, Concord, MA
ã ... prior written permission of the publisher.
12 345 67890 KGP/KGP 076 543 21
ISBN 0-07-136169-3
The sponsoring editor for this book was Larry S. Hager and the production supervisor
was
Pamela A. Pelton. ... applications beyond
NASA’s immediate objectives in space science and requirements for specialized equip-
ment. The names of the scientist/inventors and the NASA facilities where the work was
performed have...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 12
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22/10/2012, 14:26
... dimen-
sioned hubs and clamps so that they can be efficiently fastened to a
precision-ground shaft.
Sclater Chapter 12 5/3/01 1:25 PM Page 42 1
41 5
Sclater Chapter 12 5/3/01 1:25 PM Page 41 5
dle has ... release collar is a key feature of
this automatic grapple.
Sclater Chapter 12 5/3/01 1: 24 PM Page 40 7
41 3
From Handbook of Fastening and Joining of Metal Parts,
McGraw-Hill, Inc.
(A) A method for ... powered systems.
Sclater Chapter 12 5/3/01 1: 24 PM Page 40 8
40 6
REMOTELY CONTROLLED LATCH
This simple mechanism engages and disengages parallel
plates carrying couplings and connectors.
A new...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 16
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22/10/2012, 14:27
... 3 14
spring, double
3 14
comb,electrostatic
47 6 48 4
cone
adjustable
245
ball, and
250
belt
245
general
244 2 54 257
Graham
246
electrically-coupled
245
planetary
246
ring, and ...
43 2
rack -and- pinion
143
ratio
347
ring
94 99 112 263 267 289
ring, cont.
352 43 2 44 3
rolling
44 3 44 4
sheet-metal 2
79
shift arrangements
282
shifting, (gears and clutched)
2 84 ... angular
acceleration
43 8
displacement
44 0
velocity
44 1
eight-slot
43 7
formulas for
43 9
four-slot
1 04 409 43 9
kinematics data for
43 9
six-slot
44 0
slot-crank motion
43 9
locking-arm...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 17
Ngày tải lên :
22/10/2012, 14:27
... both classical and mod-
ern mechanisms and mechanical devices. This edition retains a large core of the con-
tents from both the first and second editions, (published in 1991 and 1996,
respectively), ... has been supplemented by new and revised articles reflecting present
and future trends in mechanical engineering and machine design.
The new articles in this edition address topics that are covered ... programmable computer and digi-
tal technology on those systems. Other articles discuss servomotors, actuators, sole-
noids, and feedback sensors—important electromechanical, and electronic components
used...
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- 0
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