Thông tin cơ chế - Thiết bị cơ khí P7 doc
Thông tin cơ chế - Thiết bị cơ khí P1 docx
... typically offer continuous torque
ratings of 0.62 lb-ft (0.84 N-m) to 5.0 lb-ft (6.8 N-m), peak
torque ratings of 1.9 lb-ft (2.6 N-m) to 14 lb-ft (19 N-m), and
continuous power ratings of 0.73 hp ... the brush-type DC servomotor with its
iron-core rotor that permit more rapid acceleration and decelera-
tion because of their low-inertia, lightweight cup- or disk-type
armatures. The disk-type ....
Thông tin cơ chế - Thiết bị cơ khí P3 docx
... begin the cutting
action.
CUTTING MECHANISMS
These 3 four-bar cutters provide
a stable, strong, cutting action by
coupling two sets of links to chain
four-bar arrangements.
The cutting edges of ... The unit’s cut-and-stacked
label capacity is 4,500. An electric eye is provided for cutting
labels in web-roll form.
The flow of containers through this
labeler is shown by the top-view
drawing ......
Thông tin cơ chế - Thiết bị cơ khí P4 potx
... causes its link to oscil-
late. A second connecting link then con-
verts that oscillation into the desired in-
line output motion.
ROTARY-TO-RECIPROCATING DEVICES
Sclater Chapter 4 5/3/01 10:45 ... the cam shaft. The cam shaft car-
ries the second cam and the 80-tooth
gear. The 3 0- and 100-tooth gears are
integral, while the 20-tooth gear is
attached to the one-cycle drive shaft. One
of t...
Thông tin cơ chế - Thiết bị cơ khí P5 doc
... job because it cannot predict the exis-
tence of such mechanisms as the Bennett
R-R-R-R mechanism, the double-ball
joint
R-S-S-R mechanism, and the R-C-
C-R
mechanism (Fig. 2). These “special”
mechanisms ... a
single degree-of-freedom mechanism,
will have a passive degree of freedom of
its coupler link. When properly con-
structed, the configuration
R-C-C-R will
also have a passive degree-...
Thông tin cơ chế - Thiết bị cơ khí P6 ppt
... is
rotating. Air springs with one, two, or three
convolutions can be used. A standard rotat-
ing-air fitting is required.
Reciprocating linear force link: It recipro-
cates with one-, two-, or ... flex-
ure width in each plane is the same.
184
The Apollo telescope-mount cluster (top
left) had flexures for tilting an X-ray tele-
scope. The platform (top right) is tilted with-
out break-away .....
Thông tin cơ chế - Thiết bị cơ khí P7 doc
... A quick-acting
dwell cams.
Fig. 3 An adjustable-
dwell cam.
Fig. 1 A quick-acting floating
cam.
Fig. 5 A double-revolution cam. Fig. 6 An increased-stroke barrel cam. Fig. 7 An increased-stroke ... dif-
ferent timing schemes.
• Accurate rotary-to-linear motion con-
version (Fig. 3H).
• Driving two counter-rotating outputs
from a single input, using just a sin-
gle belt (Fig. 3I).
• Rotary-to-...
Thông tin cơ chế - Thiết bị cơ khí P8 doc
... cas-
sette audio-visual tape recorders.
The models included record-playback
and playback-only portables and decks.
Fixed parameters. The Philips cas-
sette concept has several fixed parame-
ters—the ... the other. Then
the wedge-type, two-way, over-running
clutch (second figure) disengages, free-
ing the wheel to spin without drag.
Variations. Each clutch has three posi-
tions: forward drive,...
Thông tin cơ chế - Thiết bị cơ khí P9 doc
... difference between magnetic-particle and mag-
netic-field clutches.
However, the magnetic medium in the parti-
cle clutch is a dry powder; in the fluid clutch it is a powder sus-
327
pended in oil. ... at the
rpm of the high-speed motor. The gear motor contin-
ues to drive the inner member, but the clutch is free-
wheeling.
Fig. 2 Backstopping permits rotation in one direc-
tion only. The clu...
Thông tin cơ chế - Thiết bị cơ khí P10 pot
... torque is transmitted
from the bevel gear through a torque-
splitting pinion to two torque-splitting
gears, then from the two torque-splitting
gears through the associated two bull
pinions to the ... still exists, control action is contin-
ued in the same direction. Thus, the con-
trol process is a step-by-step response to
make the correction and to stop the oper-
ation of the controller.
The...