The effects of cutting parameters on dimensional accuracy in wet and dry turning

Saari, Saadatunur (2015) The effects of cutting parameters on dimensional accuracy in wet and dry turning. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

In brief, turning operation is one of the cutting processes that are used in the major manufacturing system. With advancing technology nowadays, the operation of turning process has also developed from manual to computer numerical control (CNC). Other than that, the machining condition has also improved in order to keep up with the sustainable environment, for instance the machining condition with or without the presence of cutting fluid. In order to investigate production system that can balance the effective cost utilization and maintaining satisfied quality for customer requirements, a focused investigation is conducted to compare the effectiveness of using wet turning and dry turning and the effect on part’s dimensional accuracy in terms of their significant effect. The objectives of this research are to investigate the factors that influence affecting the dimensional accuracy for both machining conditions, to establish and validate the regression model of dry cutting and wet cutting and to compare the effectiveness of these machining conditions to achieve better dimensional accuracy. 81 samples were used in both experiments using CNC turning machine for both wet turning and dry turning within the factors of cutting speed (80-120 m/min), feed rate (0.5-0.7mm/rev), depth of cut (0.2-0.4mm), actual final cutting length (25-35mm) and actual final cutting diameter (10-15 mm). The results from these experiments were analyzed by regression analysis in Minitab 17. It has found that actual final cutting diameter gives the biggest impact on wet turning and depth of cut gives the biggest impact on dry turning. Other than that, the usage of wet turning in this specific parameter condition is better than dry turning, since it comply all the requirements of sustainable manufacturing, minimizing cost and most importantly producing better dimensional accuracy.

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