TY - JOUR
T1 - Investigation on the effect of a pre-center drill hole and tool material on thrust force, surface roughness, and cylindricity in the drilling of Al7075
AU - Ghasemi, Amir Hossein
AU - Khorasani, Amir Mahyar
AU - Gibson, Ian
PY - 2018/1/16
Y1 - 2018/1/16
N2 - Drilling is one of the most useful metal cutting processes and is used in various applications, such as aerospace, electronics, and automotive. In traditional drilling methods, the thrust force, torque, tolerance, and tribology (surface roughness) are related to the cutting condition and tool geometry. In this paper, the effects of a pre-center drill hole, tool material, and drilling strategy (including continuous and non-continuous feed) on thrust force, surface roughness, and dimensional accuracy (cylindricity) have been investigated. The results show that using pre-center drill holes leads to a reduction of the engagement force and an improvement in the surface quality and cylindricity. Non-continuous drilling reduces the average thrust force and cylindricity value, and High Speed Steels HSS-Mo (high steel speed + 5-8% Mo) reduces the maximum quantity of cutting forces. Moreover, cylindricity is directly related to cutting temperature and is improved by using a non-continuous drilling strategy.
AB - Drilling is one of the most useful metal cutting processes and is used in various applications, such as aerospace, electronics, and automotive. In traditional drilling methods, the thrust force, torque, tolerance, and tribology (surface roughness) are related to the cutting condition and tool geometry. In this paper, the effects of a pre-center drill hole, tool material, and drilling strategy (including continuous and non-continuous feed) on thrust force, surface roughness, and dimensional accuracy (cylindricity) have been investigated. The results show that using pre-center drill holes leads to a reduction of the engagement force and an improvement in the surface quality and cylindricity. Non-continuous drilling reduces the average thrust force and cylindricity value, and High Speed Steels HSS-Mo (high steel speed + 5-8% Mo) reduces the maximum quantity of cutting forces. Moreover, cylindricity is directly related to cutting temperature and is improved by using a non-continuous drilling strategy.
KW - Drilling
KW - Pre-center drill hole
KW - Surface roughness
KW - Thrust force
UR - http://www.scopus.com/inward/record.url?scp=85040831994&partnerID=8YFLogxK
U2 - 10.3390/ma11010140
DO - 10.3390/ma11010140
M3 - Article
AN - SCOPUS:85040831994
VL - 11
JO - Materials
JF - Materials
SN - 1996-1944
IS - 1
M1 - 140
ER -