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Diamond Coated Drill

Comparison of Drilling accuracy


Cutting Conditions
Drill Diameter : 3.0 Feed : 0.1mm/rev
Material : AS390
(Al-17%Si Alloy) 		Depth : 10mm Through Hole
Coolant : Emulsion
Speed : 80m/min Machine :Vertical MC

Performance of drilling High silicone



Conditions
Drill : 6mm
Speed : 800m/min
Feed : 0.20mm/rev
Depth : 20mm Through
Material : AS390
Coolant : Emulsion

Performance of drilling MMC

Conditions
Drill : 6mm
Speed : 20m/min
Feed : 0.03mm/rev
Depth : 24mm Through
Material : MMC
Coolant : Emulsion

Examples

Drill Diameter Material Comparison of Tool Life Drilling Condition
Convertional Carbide Drill Diamond-Coated Drill
2.5 ADC12
(Al-12%SiAlloy) 		20,000
Holes		 258,000
Holes
Rotation : 20,000 min-1
Feed : 0.08 mm/rev
Coolant : Emulsion
6.0 A390
(Al-17%SiAlloy)		 100 Holes 2,300
Holes
Rotation : 8,000 min-1
Feed : 0.1 mm/rev
Coolant : Emulsion
3.0 GFRP 3,000 Holes 30,000
Holes
Rotation : 40,000 min-1
Feed : 0.013 mm/rev
Coolant : Dry
1.5 Pre-Sintered
WC-Ceramics		 100 Holes 14,000
Holes
Rotation : 1,000 min-1
Feed : 0.01 mm/rev
Coolant : Dry
2.0 Pre-Sintered
Al2O3-Ceramics		 Half Day
to 3 days		 More than
3 months
Rotation : 3,300 min-1
Feed : 0.003 mm/rev
Coolant : Dry
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