Level

Taguchi method

Lineal regression equations

Quadratic regression equations

Exp.

Pred.

Error (%)

Exp.

Pred.

Error (%)

Exp.

Pred.

Error (%)

Ra (µm)

Vc2ap1 f1 (Optimum)

0.165

0.054

66.909

0.165

0.647

292.181

0.165

0.137

16.806

Vc1ap2 f2 (Random 2)

1.102

0.818

25.708

1.102

0.7592

31.107

1.102

1.080

1.916

Vc3ap1 f3 (Random 7)

1.157

1.111

3.915

1.157

1.007

12.964

1.157

1.131

2.167

VBmax (mm)

Vc1ap2 f3 (Optimum)

0.909

0.238

73.729

0.909

1.155

27.062

0.909

0.916

0.869

Vc1ap2 f2 (Random 2)

0.905

0.913

0.972

0.905

0.980

8.287

0.905

0.853

5.679

Vc3ap1 f3 (Random 7)

0.640

0.648

1.375

0.640

0.848

32.562

0.640

0.582

8.937