Abstract：
:In this study, 3D finite element simulation of ultrasonically-assisted drilling is carried out to analyze the effect of ultrasonic vibrations on common difficulties existed in conventional drilling. Influence of harmonic movement of drill bit on the formation of built-up edge is experimentally evaluated and also discussed by investigation of heat generation on the tool faces in simulation. At the end, it was revealed that intermittent movement of drill bit in vibration method causes the total time of heat transfer between workpiece and drill bit to be reduced resulting lower built-up edge formation compared to conventional drilling. Moreover, linear motion of cutting tool in the feed direction results in the increase of chip strain and consequently damage value which causes to generation of broken chips.
journal_name
Ultrasonicsjournal_title
Ultrasonicsauthors
Lotfi M,Amini Sdoi
10.1016/j.ultras.2016.11.009subject
Has Abstractpub_date
2017-03-01 00:00:00pages
185-193eissn
0041-624Xissn
1874-9968pii
S0041-624X(16)30293-1journal_volume
75pub_type
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