Small are useful in day by day life and

Small
scale industries have limited space in every countries. In 21st
century every production have been quicker due to innovation in technology but
this headway requests more investments. Expanding the productivity is one of
the fundamental requirement of production and design engineering in any kind of
manufacturing industry. It can be achieved either by decreasing the machining
time or by increasing the capability and efficiency of machine to produce the product
at the same time. In a recent time the machines accessible in the market are
for the single purpose utilize. For example drilling a hole we need drilling
machine, for cutting we need hacksaw machine. The machine which can operate
every single operations is available in the market however every one operations
working at a same time is not available without changing of instrument or tool.
We can overcome the problem of more land space required, heavy power
consumption and large amount of manpower required.

By
introducing multipurpose operating machine we can perform various operations
like cutting, drilling and shaping by the help of different combination of
mechanical mechanisms to transmit the power or feed from one tool to another. The
multipurpose operating machine can conduct all the operations simultaneously on
the materials like wood and soft metals. This type of machine can also use the
inversion of mechanical mechanism. This machine can use different type of gears,
belt drive, pulley, shaft, electric motor, cutting disk, grinding wheel, drilling
machine and mechanism to merge different machining operations into one.

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MECHANISM

The
basic physical or chemical process that are responsible to carried out
particular action which is known as mechanism. Mechanism is useful to transfer
power to one body to another.

TYPES
OF MECHANISM

Here
are some mechanism that are useful in day by day life and they are as Gears, gear
train, chain drive, belts and pulley, lever, wheel and axle, cams and screw
jack.

KINEMATIC
FOUR BAR CHAIN MECHANISM

Kinematic
four bar chain mechanism consist of four chain. All four links are
interconnected and the first link connected to last link as well. They all have
relative motion to each other.

INVERSION
OF MECHANISM

We
can fix any link from kinematic chain which is known as inversion of mechanism.
By fixing different link at a time we can get different relative motion or
power with respect to each other.

BELT
DRIVE WITH PULLEY

Pulley
are one of the common mechanism to lift the heavy loads and transmitting the
power across two or more different shafts .Two pulleys attached with flexible
belt rotating over its circumference. Pulleys are useful in variety of places.
Two pulleys makes a mechanism called belt drive. Belts and pulleys are
generally useful to transmitting power to longer distance. Driving factor of
pulley and belt is fricrion

SPUR
GEAR MECHANISM

It
is the most common gear mechanism that are available. They are classified by
their teeth. Teeth are at 90o to each other. Spur gear cannot be used
when the angle between two shafts is changed. Spur gear is a less expensive and
efficient.

HELICAL
GEAR MECHANISM

Helical
gears are equivalent to the spur gear instead of the teeth are placed at an
angle rather than similar to shaft. The length of teeth is longer than spur
gear. Angle of teeth is known as helix angle. Main disadvantage of helical gear
mechanism is that it is more expensive and production of it is more difficult
than spur gear. It can transmit higher power ratio.

RACK
AND PINION MECHANISM

Rack
and pinion gear mechanism are used to transmit power through right angle. Rack
is a small gear consist with teeth on its boundary. Pinion is a shaft having
thread of its entire length. It can converts rotational motion to longitudinal
motion. The use of it is limited but this mechanism can provide better
precision than other gear mechanism.

BEVEL
GEAR MECHANISM

 Bevel gear are gears where the axis of the
rotation of two cross and intersecting tooth-bearing face of the gears
themselves are conical shaped. Bear gears are also known as angle gear. Bear
gears are frequently mounted on a shafts that are 90 degree separated but in
any case, it can be intended to work at different angles also.  This gear is an excellent choice for cross and
intersecting choice.

 

SCOTCH
YOKE MECHANISM

A
scotch yoke mechanism is one the type of mechanical inversion mechanism which
can converts rotational movement to straight movement or the way around by
utilize a pin moving in a slot. This mechanism have two turning pair and two
sliding pair.

Multipurpose
operating machine consist of cast iron stand with four legs. Power is
transmitted by electric motor to the small pulley with belt drive. Centre of
small pulley is attached with drill chuck, where it can perform drilling
operation with different drill size. Small pulley is connect to the large
pulley with belt drive. Large pulley is connect to the shaft. Other end of
shaft is attach with the disk of scotch yoke mechanism. The links of scotch
yoke mechanism are connected in such a way that they transmit power in forward
and reverse motion with the help of shaft, where it can perform hacksaw cutting
and metal shearing operation.

Material
that can be used for setup is as bellow.

MATERIAL

QUANTITY

Stand with four legs

1

Shaft

2

Pulley

1

Bevel gear

1

Bearings

4-6

Electric motor

1

Shaping tool

1

Drill bits

As per diameter required

Hacksaw Blade

As per requirements

Belt

2

Drill chuck

1

 

ADVANTAGE

·     Total
timing of machining process can be reduced.

·     Multiple
operations can be performed simultaneously.

·     Production
rate can be increased.

·     Tool
setup time can be reduced.

·     Less
manpower required.

·     Power
consumption is low

·     Low
space required

·     Flexibility
of operation can be increased

CONCLUSION

The
main reason of this research is to fulfil the different needs of machining
operations like to decrease the time of machining, to utilize the minimum input
for maximum production, to reduce man power and to increase production rate. As
the production requirement gets increased day by day, this research  require further study and a few upgrades that
can turn multipurpose operating machine into marginable benefit to the
organization with lowest cost and higher production