Influence of Drilling Parameters to the Chip Formation of Machining Aluminum 6061 Using Hss Twist Drill
Year: 2024
Type: article
Abstract: ABSTRACT - The influence of drilling parameters on chip formation during the machining of aluminiumworkpieces using High-Speed Steel (HSS) tools plays a critical role in optimizing the process forenhanced efficiency, surface quality, and sustainability. Drilling parameters like cutting speed, feed rateand drill bit point angle can significantly influence the machining performance. This researchinvestigates the relationship between key drilling parameters such as spindle speed, feed rate, and drillbit point angle to the chip formation and hole surface roughness. Design of experiment (DoE) usingResponse Surface Methodology (RSM) was employed to optimize the experimental work. Themachining operation employed a CNC machine to drill a hole on aluminum 6061 using 10mm HSS twistdrill. The input parameters studied are spindle speed, feed rate and tool drill point angle while the chipformation and surface roughness are considered as an output parameter. The result reveals thatContinuous, segmental and discontinuous chip are produced at drill bit angle of 90°, 118° and 135°respectively. In addition, the ANOVA analysis identifies that the point angle is the most significant factorcontributes to surface roughness of drilled hole of p-value of 0.0001 which then followed by spindlespeed of p-value of 0.0103. Both spindle speed and point angle critically determine surface roughness,with lower spindle speeds and larger point angles resulting in rougher surfaces due to discontinuouschip formation. These findings provide valuable insights into optimizing drilling parameters to achievedesired machining outcomes, thereby supporting the development of more efficient and sustainablemanufacturing processes.
Institutions: Universiti Teknologi MARA, Politeknik Tuanku Sultanah Bahiyah
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
Funder: Universiti Teknologi MARA
Award: G4976065483
OpenAlex ID: W7219920847