Effects of Helix Angle on Cutting Performance for Machining Thin-Wall Aerospace Monolithic Component

Abstract:

The thin-walled component is mostly used in the aerospace industry. During machining the thin-walled components, deflection of wall occurs and causes the surface dimensional error. This paper focuses on the effect of end mill helix angle on the surface dimensional error and surface roughness when machining thin wall structure. End mills uncoated carbide were fabricated with a difference helix angle which are 25°, 30°, 35°, 40° and 45°. The results show, helix angle 35° produce smaller surface dimensional error and smoothest followed by 40°, 45°, 30° and 25°. The smaller helix angle provided high cutting force that causes more surface dimensional error due to chatter and reduction of contact time when then end mill engage with the workpiece material. Results from this research help to guide the machinist to machine thin-wall component with the right cutting tool.

• Periodical: Applied Mechanics and Materials (Volume 699)
• Pages: 3-8
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.699.3
• Online since: November 2014
• Authors: Abu Bakar Mohd Hadzley*, Mohamad Raffi Nurul Fatin, Raja Izamshah, Ahmad Siti Sarah, Mohd Shahir Kasim, Mohd Amran Ali, Mohd Amri Sulaiman
• Keywords: End Mill, Helix Angle, Machining, Milling, Surface Dimensional Error, Thin Wall Components

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