OPTIMASI PARAMETER PEMOTONGAN MESIN BUBUT CNC TERHADAP KEKASARAN PERMUKAAN DENGAN GEOMETRI PAHAT YANG DILENGKAPI CHIP BREAKER
ABSTRACT: In machining
operation, the quality of surface finish is an important requirement for many
turned workpieces. Thus, the choice of optimized cutting parameters is very
important for controlling the requied surface quality The focus of present
experimental study is to optimize for cutting speed, feed rate, and radius chip
breaker using two performance measures, metal removal rate and surface
roughness. Response Surface Methodology (RSM). has been applied for developing models
in the form of multiple regression equations correlating dependent parameters
with cutting parameters and radius chip breaker, in a turning process. The
central composite rotatable design was used to plan the experiment, and
analysis of variance were employed to study the performance characteristics for
three variable independent in turning operation. A second-order model which can
describe the relation then to find combination between cutting parameters and
radius chip breaker which resulting the maximum metal removal rate and minimum
surface roughness. The experimental results reveal that the most significant
cutting parameters for surface roughness is cutting speed, followed by feed
rate and radius chip breaker. Based on the optimization results, recommended
cutting speed, feed rate, and radius chip breaker is 35 m/mt, 0,2819 mm/rev,
and 0,85 mm. By implementing this parameters, the surface roughness and metal
removal rate is 2,18 μm and 6230,80 mm3/mt.
Penulis: Achmad Wibolo, Slamet
Wahyudi, Sugiarto
Kode Jurnal: jptmesindd110259
