student idea for project

1. Coconut Scraping
Machine

2. CONTENTS
 INTRODUCTION
 BASIC PRINCIPLE
 BLOCK DIAGRAM
 ADVANTAGES & DISADVANTAGES
 FUTURE SCOPE AND CONCLUSION

3. INTRODUCTION
Coconut is widely used in food Industry within industrial food plants as
well as at homes. Scraping coconuts is quite a time consuming task.
Manually doing so requires a lot of efforts and is not so economical. So
here we propose an automated coconut scraping machine project. It
provides fine scraped coconut as desired for food preparation and
requires no manual effort. It also does this work in a fraction of time. The
system uses a shaft with holder to hold half cut coconut in place. This
holder shaft is held in place by mounts designed for it. Also a frame is
made to hold the entire mechanism. On the other side has another shaft
that is mounted horizontally with scraping tool attached to it at one end.
At the other end it has a motor attached to the shaft. The motor is
powered by our electrical circuit to move the scraper tool and the
coconut can be pushed against it to achieve coconut scraping in a short
time without much manual effort.
Contd….

4. BASIC PRINCIPLE
Malayalis’ craving for grated coconut is a stuff of legend. But grating coconuts has
turned out to be a
daunting task for the ever-busy, on-the-move neo nuclear family, leaving them to
depend on packedproducts that are easily available in the market. There has been
no change in the way coconut isgrated, for several decades. The only change being
the introduction of a motorized blade. But still,one has to hold the coconut. But all
that is set to change with the invention of an innovative coconutgrater which can
do the job in just few minutes with improved safety and convenience

5. BLOCK DIAGRAM

6. DC MOTORS
 In any electric motor, operation is based on simple
electromagnetism. A current-carrying conductor generates a
magnetic field; when this is then placed in an external
magnetic field, it will experience a force proportional to the
current in the conductor, and to the strength of the external
magnetic field.
 Every DC motor has six basic parts -- axle, rotor (armature),
stator, commutator, field magnet's, and brushes. In most
common DC motors the external magnetic field is produced by
high-strength permanent magnets.

7. ADVANTAGES OF DC
MOTOR
High output power relative to motor size and weight.
Encoder determines accuracy and resolution.
High efficiency. It can approach 90% at light loads.
High torque to inertia ratio. It can rapidly accelerate
loads.
Has "reserve" power. 2-3 times continuous power for
short periods.

8. ADVANTAGES DISADVANTAGES
• Fast Coconut Scraping
• Easy To Use
• Automated Scraping
We have to check
mechanism from time to
time
Not work properly in
crossings

9. FUTURES COPE AND CONCLUSION
FUTURE SCOPE :-
More suitable and compact mechanisms to enhance efficiency.

10. CONCLUSION :-
The innovative coconut grating design is really time saving, less power
consuming, safe and costeffective. It can grate coconuts within seconds.
The only power it consumes is for rotating the motor.Also it is portable
and simple. The coconut will be scraped completely. The materials used
for makingthis machine are safe and long lasting.

11. THANK YOU