The effects of dub-off angle on chip evacuation in single-lip deep hole gun drilling

• Main Authors: Wan, S., Tnay, Guan Leong, Woon, Keng Soon, Yeo, Swee Hock
• Other Authors: School of Mechanical and Aerospace Engineering
• Format: Article
• Language: English
• Published: 2016
• Subjects: Deep hole gundrilling; Chip evacuation
• Online Access: https://hdl.handle.net/10356/84680; http://hdl.handle.net/10220/41932
• Institution: Nanyang Technological University

Without proper chip evacuation, gun drills will fail under intense thermal and mechanical loading during deep hole drilling of high temperature superalloys like Inconel 718. In gundrilling, the efficiency in evacuating chips is governed by the geometry of gun drills that defines the hydraulic bounda...