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Vibration Equipment
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| The optimum quality Vibration Equipment is designed and developed by us on the special demand of the clients. We have carved a niche as the leading Vibration Analysis Equipment Manufacturer and Supplier in India. Vibration Equipment has found its uses in different industries. The increasing demand of it has enforced us to cater a world class quality Vibration Equipment. Moreover we are experts in manufacturing Vibration Testing Equipment that compliance the Indian & international quality standards.
VIB- 01
INTRODUCTION
“EEE” Cam Analysis Machine is a motorised unit consisting of a cam shaft driven by a D.C. motor .The shaft runs in a double ball bearing. At the free end of the cam shaft a cam can be easily mounted. The follower is properly guided in gun metal bushes and can be changed to suit the cam under test. A protractor scale is fitted coaxial with the shaft. Dial gauge is provided to note the follower displacement for the angle of cam rotation. A spring is used to provide controlling force to the follower system.
Weights on the push rod can be adjusted as per the requirement . 2 amp closed type D.C. dimmer is provided for the speed regulation.
RANGE OF EXPERIMENTS
With the combinations of cams and followers provided the following tests can be
conducted.
1. Plotting and analysis of the displacement Vs angle (f) curve.
2. The velocities and accelerations of the follower may be derived and hence inertia forces plotted over the whole lift period. The condition of follower bounce can clearly be shown by carrying out theoretical calculations and graphs from X f curve.
3. Follower bounce can be observed by using a stroboscope (optional).
4. Test can be repeated by changing parameters like various compression springs follower weights and Cam speeds.
The formula relating to the parameters at the point of bounce is.
w = Angular velocity of cam shaft.
S = spring force.
W = Follower weights.
r = Lift of cam.
W+S
w= ------- r.W.
5. To study the effect of follower weights (W) on the speed of bounce.
6. To study the effect of initial spring compression on the speed of bounce.
SPECIFICATIONS
1. Cams :tangent, eccentric, circular arc.
2. Followers :roller, knife-edge, mushroom
3. Compression spring weights :1 kg, 500 gm 100 gm.
4. Motor :d.c. ¼ hp./ 0-1500 rpm.
Speed control unit.
Typical test results: -
1. Jump speed is found decreased with the increasing follower weights.
2. Jump speed is found to increase with the increasing force.
INSTRUCTION MANUAL
A manual is supplied which gives details of the apparatus and procedure of experiments.
SERVICE REQUIRED
Single phase AC. Mains supply of 220V, 50 Hz.
Space required : 1 mt x 1mt
VIB- 2 (Exp - 8)
INTRODUCTION
Figure represents an elastically supported machine rotating at w rad/sec. Let the unbalance mass
m have an eccentricity e. Let m be the total mass of the machine including the unbalance mass 0 m , and k and c the spring stiffness and the damping coefficient respectively in the direction of 0
vibration. Let the mass m make an angle wt with the reference axis, at any instant. Then the 0 2 centrifugal force m w e acts outward from the centre of rotation as shown in the figure. 0 Consider a spring-mass having viscous damping, excited by a sinusoidal forcing function F sin t o as shown in figure at any instant, when the mass is displaced from the mean position through a distance x in the downward direction positive direction of x, the external forces acting on the system are shown in the figure. These forces are
(a) kx in the upward direction
(b) cx in the upward direction.
F sin t in the downward direction o
For practical experimentation electric motor with excentric mass on both sides are used.
To excite spring member in vertical direction (transverse vibration).
RANGE OF EXPERIMENTS
1. To study forced vibration setup
2. To study excitation of excentric mass to generate vibration.
3. To study effect of damping on forced vibrations
4. To draw graph if Amplitude Vs frequency using strip chart recorder.
SPECIFICATIONS
1. Exciter assembly with PMDC motor having excentric masses on both sides.
1 PMDC motor / HP 1500 rpm 12
2. Proxity switch with digital RPM indicator.
3. Strip chart recorder to record sinusoidal vibration at different damping ratios.
4. Control panel with
(a) DC motor speed control
(b) Digital RPM indicator
(c) on / off Switches
(d) Strip chart recording control.
INSTRUCTION MANUAL
A manual is supplied which gives details of the apparatus and procedure of experiments.
SERVICES REQUIRED
A.C. 230 V single phase stabilised supply with earthing connection.
Space required 2 mtr x 1.5 mtr approx.
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PRODUCTS
