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Taking the above factors into consideration, experiment was conducted to determine the best combination factors to obtain optimum hole diameter and surface roughness quality.
A methodology was adopted to conduct these experiments in organized method which was the Design of Experiment DOE and the data from the experiment was analyzed.
1.1 Background
The aim of this work was to utilize taguchi method to investigate the effects of drilling parameters such as cutting speed 70,90 and 110 mmin, feed 0.1, 0.015, 0.02, 0.45 and
0.8 rev min and drill tool diameter 50, 75, 100mm on positioning accuracy in drilling of OHNS material using
solid drill. The analysis of variance ANOVA, and regression analysis are employed to analyze the effect of drilling parameters on the quality of positioning
accuracy. The experimental results are collected and analyzed using commercial software package MINITAB. Linear regression equations are developed with an objective to establish
a correlation between the selected drilling parameters with the quality characteristics of the drilled holes. The predicted values are compared with experimental data and are found to be
in good agreement.
1.2 Objective
Based on the title and problem statements of this project The main objective of this project are :
1. To study the effect of speed, feed rate , Tool length, and vibration in flood drilling
process of aluminum alloy for positioning quality. 2.
To analyze the influence slender cutting tool and cutting parameter in dimensional accuracy.
3. To monitor the vibration of cutting tool and the effect of vibration on the accuracy of
parts using an accelerometer. 4.
To establish empirical model for the cutting parameters and slender cutting tool when machining aluminum alloy by utilizing statistical data approach.
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1.3 Scope of Project
The scope of work was clearly define the specific field of the research and ensure that the entire content of this project is confined the scope. It was began with the literature review.
The next step was to perform experimental studies on flood drilling process of aluminum alloys to determined the significant parameters affecting positioning accuracy. The result of
the experiment for the positioning accuracy is analyzed under varying cutting speed, feed rates, feed rate and tool length with low and high values setting. Automatically the vibration
will read by using the data acquisition system while drilling machine run. The system named as accelerometer had been used to study the effect of vibration of machine tools on
dimensional accuracy.
Figure 1.1 : Flow chart represents the scope of work
Literature Review on Drilling Process Quality CharacteristicParameters Selection
Design of Experiment DOE – Full Factorial
Experiments Conduct Experiment - Diameter Hole Accuracy
ANOVA – Predict Optimum Performance
Overall Evaluation Criteria Confirmation Experiments
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1.4 Problem Statement
