TypeConference
TitleMACHINING AND CUTTING SIMULATION: EFFECT OF RAKE ANGLE AND CLEARANCE ANGLE ON WEAR CUTTING INSERT CARBIDE
SourceNTC-2009-004
AuthorHendri. Y., Jaharah A.G., Che Hassan C.H.

Abstract

High production rates at minimum cost will also be achieved by selecting correct cutting tool geometry for a particular combination of work material and cutting tool. Problem facing in precision turning is how to minimize tool wear in order to obtain good accuracy of geometrical part and surface finish. In this study the effect of changing the insert carbide geometries of rake angle to the wear level was investigated. The tungsten carbide insert type of DNMA 432 was used as cutting tool. FCD 500, a ductile cast iron, was chosen as work material. The seven series of simulations using Deform-3D were carried out using various tool geometries, whilst the cutting speed, feed rate and depth of cut were kept constant at 200 m/s, feed 0.35 mm/rev, and 0.3 mm respectively. Some combination of carbide insert geometries were set up to produce -15,-10, -5 deg (negative rake angle), 0 and +5, +10, +15 deg (positive rake angle) using pre processor of Deform-3D. Changing rake (followed by change of clearance angle) resulted in changes in the cutting forces, therefore causes the change of the wear depth in the tool edge of carbide insert. The simulation results were agreeable with theory, where increase in rake angle, caused conversely decreasing clearance angle and will be bigger area contact between of clearance face and work piece surface, so this caused increase of tool wear.


Content

NTC-2009-004