Proceedings of the
World Congress on Micro and Nano Manufacturing (WCMNM 2022 )
19–22 September 2022, Lueven, Belgium
doi:10.3850/978-981-18-5180-3_RP18-0018
Feasibility of Orthogonal Micro Turning Incorporating High Speed Machining Using Minimum Quantity Lubrication
Department of Mechanical Engineering, Indian Institute of Technology (ISM) Dhanbad, Jharkhand, 826004, India
ABSTRACT
Micro turning is an emerging micromachining technology to fabricate high accuracy miniaturized cylindrical components. However, low material removal rate, high tool wear, and surface degradation have limited application of micro turning. In this article, the feasibility of high-speed orthogonal micro turning has been investigated. High speed micro turning has been introduced to improve the material removal rate and achieve the favorable effects. Micro turning has been performed on lead free brass by coated carbide inserts. Four different levels of feed rate, and depth of cut have been incorporated in the machining operation at two different spindle speeds. Minimum quantity lubrication (MQL) has been applied in the experiments considering its favorable effects. The surface topography, chip formation, and tool wear have been investigated. It has been observed that lower spindle speed possessed better performance in terms of surface formation, chip formation, and tool wear. On the other hand, the surface quality was completely degraded with unfavorable chip formation at higher spindle speed.
Keywords: Orthogonal micro turning, High speed micro turning, Minimum quantity lubrication, Surface roughness.
Department of Mechanical Engineering, Indian Institute of Technology (ISM) Dhanbad, Jharkhand, 826004, India
ABSTRACT
Micro turning is an emerging micromachining technology to fabricate high accuracy miniaturized cylindrical components. However, low material removal rate, high tool wear, and surface degradation have limited application of micro turning. In this article, the feasibility of high-speed orthogonal micro turning has been investigated. High speed micro turning has been introduced to improve the material removal rate and achieve the favorable effects. Micro turning has been performed on lead free brass by coated carbide inserts. Four different levels of feed rate, and depth of cut have been incorporated in the machining operation at two different spindle speeds. Minimum quantity lubrication (MQL) has been applied in the experiments considering its favorable effects. The surface topography, chip formation, and tool wear have been investigated. It has been observed that lower spindle speed possessed better performance in terms of surface formation, chip formation, and tool wear. On the other hand, the surface quality was completely degraded with unfavorable chip formation at higher spindle speed.
Keywords: Orthogonal micro turning, High speed micro turning, Minimum quantity lubrication, Surface roughness.
