Case Studies: Connecting Rod
Just watch current case studies in automotive industry comparing Connecting Rod.CUSTOM CHAMFERING AND BORING BAR:
Material: Forged Steel (SMG 4)
Coolant: Water soluble oil
Operation: Crank bore rough boring (before cracking) and chamfering by circular interpolation
Criterion: Tool life
Fixturing: Hydraulic clamping fixture
Tool: Custom step boring bar Ø 49 mm
Insert 1: SCMT09T309-F2, TP2500
Cutting Data:
| | vc | fz | ap | z | k |
| Metric | 280 m/min | 0.18 mm/tooth | 2.5 mm | 2 | 2 |
| Inch | 920 sf/min | 0.007"/tooth | 0.098" | 2 | 2 |
Results:
- Tool life = 800 pcs.
- 25% increase to tool life via Duratomic insert grade TP2500.
SECO FEEDMAX™ CHAMFER DRILL:
Material: Forged Steel (SMG 4)
Coolant: Water soluble oil
Operation: Drilling the 2 bearing cap holes
Criterion: No tool deviation allowed
Fixturing: Hydraulic clamping fixture
Tool: SD245A-C45-9.5-40-14R1
Cutting Data:
| vc | fz | ap |
|---|
| Metric | 75 m/min | 0.25 mm/rev | 50 mm D.O.C. |
| Inch | 250 sf/min | 0.010"/rev | 1.97" D.O.C. |
Results:
- Tool life = 1350 holes
- 24% increase to tool life and improved hole centering due to drill geometry.