Ejector pin hole drilling in plastic mold (HRC52)
Machining conditions
Work material |
STAVAX HRC52±2 |
Coolant |
water soluble cutting oil |
Machining process 1
Tool used |
TOGLON HARD SP |
Van code |
90TGHSP3CBALD |
Process |
Spot drilling |
Comparisson tool |
none |
Diameter |
φ2.5mm |
Drilling depth |
1mm |
Cutting speed |
25m/min |
Spindle speed |
3200min-1 |
Feed amount |
0.04mm/rev |
Feed speed |
128mm/min |
Machining process 2
Tool used |
TOGLON Hard Long Drill |
Van code |
TGHDL2CBALT |
Process |
Through hole drilling |
Comparisson tool |
none |
Diameter |
φ2mm |
Drilling depth |
40mm |
Cutting speed |
25m/min |
Spindle speed |
4000min-1 |
Feed amount |
0.04mm/rev |
Feed speed |
160mm/min |
Step length |
0.5mm |
Machining process 3
Tool used |
TOGLON Hard Long Drill |
Van code |
TGHDL4CBALT |
Process |
Through hole drilling |
Comparisson tool |
none |
Diameter |
φ4mm |
Drilling depth |
40mm |
Cutting speed |
25m/min |
Spindle speed |
2000min-1 |
Feed amount |
0.06mm/rev |
Feed speed |
120mm/min |
Step length |
0.5mm |
Test result
The ejector pin hole could be drilled into the pre-hardened steel without problems.