scholarly journals Effect of machining parameters and cutting tool coating on hole quality in dry drilling of fibre metal laminates

2019 ◽  
Vol 212 ◽  
pp. 159-174 ◽  
Author(s):  
K. Giasin ◽  
G. Gorey ◽  
C. Byrne ◽  
J. Sinke ◽  
E. Brousseau
2020 ◽  
Vol 107 (5-6) ◽  
pp. 2817-2832 ◽  
Author(s):  
K. Giasin ◽  
J. Hawxwell ◽  
J. Sinke ◽  
H. Dhakal ◽  
U. Köklü ◽  
...  

2021 ◽  
Vol 64 ◽  
pp. 996-1012
Author(s):  
Khaled Giasin ◽  
Alisha Dad ◽  
Emmanuel Brousseau ◽  
Danil Pimenov ◽  
Mozammel Mia ◽  
...  

Materials ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1783
Author(s):  
Hamza A. Al-Tameemi ◽  
Thamir Al-Dulaimi ◽  
Michael Oluwatobiloba Awe ◽  
Shubham Sharma ◽  
Danil Yurievich Pimenov ◽  
...  

Aluminum alloys are soft and have low melting temperatures; therefore, machining them often results in cut material fusing to the cutting tool due to heat and friction, and thus lowering the hole quality. A good practice is to use coated cutting tools to overcome such issues and maintain good hole quality. Therefore, the current study investigates the effect of cutting parameters (spindle speed and feed rate) and three types of cutting-tool coating (TiN/TiAlN, TiAlN, and TiN) on the surface finish, form, and dimensional tolerances of holes drilled in Al6061-T651 alloy. The study employed statistical design of experiments and ANOVA (analysis of variance) to evaluate the contribution of each of the input parameters on the measured hole-quality outputs (surface-roughness metrics Ra and Rz, hole size, circularity, perpendicularity, and cylindricity). The highest surface roughness occurred when using TiN-coated tools. All holes in this study were oversized regardless of the tool coating or cutting parameters used. TiN tools, which have a lower coating hardness, gave lower hole circularity at the entry and higher cylindricity, while TiN/TiAlN and TiAlN seemed to be more effective in reducing hole particularity when drilling at higher spindle speeds. Finally, optical microscopes revealed that a built-up edge and adhesions were most likely to form on TiN-coated tools due to TiN’s chemical affinity and low oxidation temperature compared to the TiN/TiAlN and TiAlN coatings.


Recently machining of hybrid stacking materials are much interested and challenging in manufacturing domains. Mostly, drill hole quality depends the machining parameters and type of cutting tool. This work investigates the experimental study for effects of drill bit geometry on hole quality of glass laminate aluminum reinforced epoxy (GLARE). GLARE have manufactured by alternative stacking of aluminum (AA7475) and glass fiber (E-glass)/epoxy composite through compression molding machine. Machining of GLARE by using of Computer numerical controller. Hole quality were studied with the aid of optical microscopic. Results show that a drill tip geometry to promote the reduction of delamination and structural damage. Superior hole quality is achieved with 2 fluted drill bit than 3 fluted drill bit.


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