A model For Surface Roughness in Turning of AISI 4140 Steel Using Coated Carbide Cutting Tool


Şahin Y., Motorcu A. R.

UMTİK 2004, International Conference on Machine Design and Production, Antalya, Türkiye, 13 - 15 Ekim 2004, ss.1-10

  • Basıldığı Şehir: Antalya
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.1-10

Özet

The surface roughness model is developed in terms of main cutting parameters such as cutting speed, feed rate, depth of cut and tool nose radius, using a full-factorial design approach. Machining tests were carried out in turning AISI 4140 steels with CVD-coated carbide cutting tools under different conditions. Moreover, analysis of variance is used to examine the impact of machining parameters on surface roughness. It is shown that the feed rate was found to be main influencing factor on the surface roughness, followed by tool’s nose radius. However, it decreased with decreasing the feed rate while it increased with decreasing the nose radius. The other parameters remained a stable. Furthermore, the interaction of feed rate/tool’s nose radius was found to be statistically significant on the surface finish because their p-values are smaller than 5%.

The  surface  roughness  model  is  developed  in  terms  of  main  cutting  parameters  such  as  cutting  speed,  feed  rate,  depth  of  cut  and  tool  nose  radius,  using  a  full-factorial  design  approach.  Machining  tests  were  carried  out  in  turning  AISI  4140  steels  with  CVD-coated  carbide  cutting  tools  under  different  conditions.  Moreover,  analysis  of  variance  is  used  to  examine the impact of machining parameters on surface roughness. It is shown that the feed rate  was  found  to  be  main  influencing  factor  on  the  surface  roughness,  followed  by  tool’s  nose  radius.  However,  it  decreased  with  decreasing  the  feed  rate  while  it  increased  with  decreasing  the  nose  radius.  The  other  parameters  remained  a  stable.  Furthermore,  the  interaction  of  feed  rate/tool’s  nose  radius  was  found  to  be  statistically  significant  on  the  surface finish because their p-values are smaller than 5%.