Abstract
The objective of this work is to investigate the influence of machining parameters namely; feed, speed, depth of cut and number of plate on average roughness in milling machine using Poly vinyl chloride (PVC) composite plate. The four machining parameters are each set at three levels using response surface methodology (RSM) design. Unwanted vibrations & noise were eliminated in order to ensure higher accuracy and surface finish along with productivity. Experiment wise investigation of the PVC plates is fixed on to the slotted table below the workpiece specimen milling operation is carried out. The experiment was repeated for different sets of PVC plates, it was observed that the average roughness (Ra) decreases with increase in number of layers of sheets of composites plates.