Comparison Study Of Machinibility Performance Based On Automated Coolant Supply System

Wan Md Hatta, Wan Nor 'Izzati (2018) Comparison Study Of Machinibility Performance Based On Automated Coolant Supply System. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

CNC machine is an industrial manufacturing machine that is used to improve quality and productivity of a product. There are two basis ways of applying coolant which are dry machining and wet cooling machining. Therefore, some researches had been done in order to obtain information about the method involved. It had been found that there are disadvantages to both techniques and this had affected to the workpiece, tooling, health and also environment. Moreover, the used of wet cooling technique causes waste and increasing productivity cost. This is because only 10% to 15% of coolants is able to play their role when it is supplied to the tool and workpiece to decrease the temperature, and the other percents of coolant is not be used. Hence, the idea of using PLC that inspired the control system of coolant supply plays the main role in developing the modem technology and industry. The purpose of this project is to develop the time-based coolant supply system and to test the performance of the machining through the surface roughness of the workpiece. The structure of this project involved development in software and hardware. The adjusted device to control the coolant supply is used by applying a washing machine inlet control valve. Next, the used of PLC is to open and close the valve. The experiment started by testing the performance which are tool speed, depth of cut and feed rate of the machine with unloaded coolants by using 5s interval time to confirm the functionality of the system. Then, it is tested with flooded coolant with combination of parameters. Lastly, 8 interval times are used to run Experiment 2 and Experiment 3. The performance of each time interval between 2s to 25s of coolants supply is analysed in term of the surface roughness of workpiece and tool wear. Average data of the analysis setup is then obtained to plot the graph in order to get the best interval time in term of surface roughness with optimum condition of speed, depth of cut and feed rate.

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