The Effect Of Cutting Parameter To The Hole Diameter Accuracy Of Aisi D2 Tool Steel In Drilling Process

Mohamad Ariff Haikal, Badrul Hisham (2015) The Effect Of Cutting Parameter To The Hole Diameter Accuracy Of Aisi D2 Tool Steel In Drilling Process. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Nowadays increasing of productivity and the quality of machined parts are the main challenges of metal cutting industry during drilling processes. Optimization methods for drilling process is really important for improvement of output quality in product and processes including in process parameters relationship and determination of optimal cutting conditions.This research is about the optimization method of selected cutting parameters which are feed rate, spindle speed and type of drill bit in drilling process on AISI D2 Tool Steel to achieve hole diameter accuracy. This project will be focus on drilling process using CNC Milling Machine with the present of coolant. The predetermined values for feed rate are 191 mm/min,381mm/min and 636 mm/min. While for spindle speed, the values are 955 RPM, 1273RPM and 1591 RPM. Lastly, types of the drilling tool were used are High Speed Steel (HSS) coated with Titanium Nitride (TiN), High Speed Steel (HSS) coated with Titanium Carbon Nitride (TiCN) and High Speed Steel (HSS) uncoated.The experimental layout was designed by Taguchi L9 (33) Orthogonal array technique. The value of hole diameter are measure by Coordinate Measuring Machine (CMM). The signal to noise (S/N) ratio and the analysis of variance (ANOVA) are employed in order to find out the optimal levels and analyse thehole diameter values. Confirmation tests were done using the optimal levels of parameter are carried out to measure the effectiveness of the Taguchi optimization method.

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