In a turning operation, life of the cutting tool has been observed to vary with change in spindle speed and feed as follows:
|
Spindle speed (r.p.m)
|
80
|
106
|
125
|
|
Feed (mm/rev)
|
0.35
|
0.30
|
0.25
|
|
Tool life (mm)
|
110
|
60
|
54
|
Determine tool life when the operation is performed at spindle speed of 130 r.p.m. with a feed of 0.22 mm/rev.