TY  - JOUR
T1  - The Influence of Tool Path Strategies on Surface Roughness and
Machining Time in the CNC Milling of UHMWPE
AU - Lestari, W.D. AU - Anggoro, P.W. AU - Fergiawan, P.K. AU - Ismail, R. AU - Jamari, J. AU - Bayuseno, A.P. 
JO  - Journal of Engineering and Applied Sciences
VL  - 13
IS  - 1
SP  - 259
EP  - 263
PY  - 2018
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2018.259.263
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2018.259.263
KW  - Toolpath strategies
KW  -surface roughness
KW  -machining time
KW  -acetabular liner
KW  -maximum
KW  -standard
AB  - The right choice of tool path strategies in the CNC milling of UHMWPE can lead to significant
reduction in machining time, improvement of workpiece surface quality and tool life, thereby, leading to overall
cost reduction and higher productivity. In the study, the effects of toolpath strategies on the surface roughness
and machining time during CNC milling of UHMWPE materials as acetabular liners of artificial hip joints were
examined. The machining experiments were performed using 3-axis CNC milling and three toolpath strategies
such as raster, step and shallow and optimize constant Z machining were investigated. The cutting parameters
for machining UHMWPE was set-up using the toolpath strategy with step and shallow machining, at a spindle
speed of 7000 rpm, step over 0.01 mm and feed rate of 1500 mm/rev. The surface Roughness (Ra) of the outer
and inner acetabular liner generated by this CNC machine is 1.195 μm. The results meet the ASTM standard for
the Ra value of the acetabular liner for the artificial hip joint which requires a maximum Ra value of 2.0 μm.
ER  -