04-03-2013, 12:02 PM
Automatic Cooling Unit
Automatic Cooling.doc (Size: 73.5 KB / Downloads: 30)
ABSTRACT
The project is to introduce automatic cooling unit instead of manual cooling process in lathe through design and fabricating the reservoir of the unit. Automatic cooling unit is a system typically delivers a controlled amount of coolant to specific locations on a machine while the machine is operating, at specific times from a central location. when the temperature at the work piece is increased above the reference temperature, the automatic coolant unit will activate and automatically pumps coolant and will reduce the temperature.
The temperature sensor or thermistor is placed near to the tool or work piece, as a result the thermistor senses the temperature from the tool -work piece interface and sends an electrical signal to the amplifier. The electrical signal is amplified by using amplifier, then this signal is send to the comparator then the comparator compares both input and reference signal. If the input signal is greater than the reference signal then the relay gets activated automatically to control the temperature to a certain level. So the coolant is pumped from the reservoir to the tool- work piece interface. Similarly when the temperature decreases below the reference value the control unit deactivates the pump by using the relay. The process will continue according to the increase and decrease of the temperature.
INTRODUCTION
The long working schedule in the lathe leads to increase the temperature at the tool as well as the work piece. This high temperature will affect the tool life and also will affect the surface finish of the work. So it is very important to introduce automatic coolant unit to the lathe instead of manual cooling, which will be very useful in the later manufacturing industry.An Automatic coolant unit comprises a pump, reservoir, valves and control unit. It typically delivers a controlled amount of coolant to specific locations on a machine while the machine is operating, at specific times from a central location. when the temperature at the work piece is increased above the reference temperature, the automatic coolant unit will activate and automatically pumps coolant and will reduce the temperature. So that we can work for longer time without any interruptions.
PLAN OF WORK
Planning is an important part of every project. Nobody plans to fail, but they fail to plan. So before staring our project work we made some planning for the successful completion of the project.
Selection of project
By considering the benefits of the project with the present conditions, the amount of money can be invested, availability of the material, duration of project, design and fabrication area the project can be planned.
Design and Drawings
Having been decided about the project to be manufactured, it must be designed. The work of the design should be done very carefully by considering all the relevant factors. After designing the project its detailed drawing are prepared so that no doubts are left for future, detailed specifications of raw materials and finished products should be decided carefully along with the specification of the machine required for their manufacture.
Purchase Consideration
It is very difficult to fabricate each and every components of the project. Fabrication must be based on the accuracy that can obtained from the components. If the project have some electronic components, then it is better to buy the components from the market, and assemble it to the requirement.
Fabrication
Fabrication of the components can be done with the help of designed calculations and drawings through different manufacturing process like cutting, welding, shaping etc