| dc.description.abstract |
Machining is a production process using machine tools by utilizing relative
movement between the chisel and the workpiece so as to produce a product in
accordance with the desired geometric results. Hard materials have abrasive
properties and a high hardness value or Young's modulus ratio. As a result of all
this, the hard lathe process requires cutting tools that are much harder and less
abrasive. One type of chisel that has hardness and resistance to wear is carbide.
The aim of this research is to study the productivity of coated carbide chisels used
in turning hardened steel and adapt the mathematical model of coated chisel
productivity as a fitness function for the simulated annealing algorithm to obtain
optimum productivity values. There are 3 fitness functions produced, VMR (max) =
1692.656 – 15.977v – 769.877f + 70.6921a, TL (max) = 117.149 – 0.93665v –
107.831f – 9.9738a, Ra (min) = 2.38654 – 0.01665v + 7.869231f – 0.35385a. By
using this fitness function, the best fitness is produced with a fitness value =
432.6339 cm3 with a value of v = 65 m/min, f = 0.15 mm/ rev, and a = 1.5 mm. The
highest TL is 25.13 min with v = 65 m/min, f = 0.15 mm/rev, and a = 1.5 mm. This
option can be used if there is no urgent work (lots of free time) or if market
demand is low. The lowest Ra is 1.92 with v = 65 mm/min, f = 0.15 mm/rev, and a
= 1.5 mm. This option is used if we want to get the best quality product, namely
with the smallest possible roughness value.
Keywords: Cutting Speed (V), Chip Fracture Angle (Ф), Carbide Chisel Bit tin | en_US |
