DRILLING TOOLS
Dormer Pramet solution: R0036.8 Machining data:
Segment:
Hydraulic pumps parts sub-contractor (Italy)
Component:
Hydraulic flow control valve
Material: Coolant:
11SMnPb37 / 1.0737 (Free machining steel, 145 HB) Yes, external, water soluble oil emulsion (8%) Bridgeport CNC drilling before M8 thread, 35 mm deep with pecking Competing premium drill has setup according to manufacturer’s recommendation (v c = 64 m/min, f n = 0.25 mm/rev), but tool life of 2300 holes is not satisfactory.
v c
f n
a p
Application:
315 (96)
.008 (0.2)
1.378 (35)
Previous results:
Result with R003: Our drill outperforms competing premium drill by slightly better tool life and also productivity, proves to be the best cost- effective choice for the job!
Dormer Pramet solution: R0032.5 Machining data:
Segment:
Machinery parts sub-contractor (China)
Component:
Gearbox casing
Material: Coolant:
C45 / 1.0503 (Carbon steel, 225 HB)
Yes, external, water soluble oil emulsion (8%)
v c
f n
a p
Application:
Vertical CNC drilling, through holes
295 (90)
.002 (0.05)
.157 (4)
Previous results:
Long-term tests running to evaluate precisely cost per hole on most common job – steel case drilling.
Result with R003: Our drill with TiN tip achieved +15% longer tool life than similar competitor drill and a number of holes very close to a premium competitor drill.
Dormer Pramet solution: R0032.8 Machining data:
Segment:
General engineering, Automotive parts sub- contractor (Italy)
Component:
Splined shaft coupling
Material: Coolant:
11SMnPb37 / 1.0737 (Free machining steel, 145 HB) Yes, external, water soluble oil emulsion (8%) Doosan CNC lathe pre-drilling for M3 thread, 12 mm deep with pecking Competing uncoated carbide drill had stable tool life set on 1400 workpieces with v c = 27 m/min. It was difficult to regrind the drill afterwards as it was almost destroyed.
v c
f n
a p
131 (40)
.003 (0.08)
.472 (12)
Application:
Previous results:
Result with R003: Our TiN tip coated drill finished whole batch of 2000 workpieces with no visible wear with even higher cutting speed, improving productivity by 48%.
5
v c = cutting speed (ft/min) (m/min), f n = feed per revolution (in/rev) (mm/rev) , a p = axial depth of cut (in) (mm)
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