|
Point Geometry
|
Hyper Tool has developed 6 different point grinds which we have
found successful for drilling various materials. It is important
that the forces on the inner and outer cutting edges be balanced in
order to minimize hole runout, which means the relationship between
the inner and outer angles and the point location be coordinated. A
more detailed listing of recommended end clearances will be added
later.
| P-1 |
General Purpose Steel & Iron |
|
Outer Angle - 42 Degrees |
|
Inner Angle - 20 Degrees |
|
Point Location -Dia /5 |
|
End Clearance - 14 Degrees |
| P-2 |
General Purpose Steel & Iron, Stainless
Steel |
|
Outer Angle - 30 Degrees |
|
Inner Angle - 20 Degrees |
|
Point Location - DIA/4 |
|
End Clearance- 14 Degrees |
| P-3 |
Soft Steel |
|
Notch Grind |
|
Outer Angle- 20 Degrees |
|
Inner Angle- 20 Degrees |
|
Point Location- DIA/4 |
|
End Clearance- 16 Degrees |
| P-4 |
Aluminum |
|
Notch Grind |
|
Outer Angle- 42 Degrees |
|
Inner Angle- 25 Degrees |
|
Point Location- DIA/4 |
|
End Clearance- 16 Degrees |
| P-5 |
General Purpose |
|
Sweep Grind |
|
Stack Point Grind |
|
Outer Angle- 30 Degrees |
|
Inner Angle- 10 Degrees |
|
Sweep- 30 Degrees |
|
Point Location- DIA/3 To DIA/2.4 |
|
End Clearance- 16 Degrees |
| P-6 |
Sweep Grind |
|
Outer Angle- 45 Degrees |
|
Inner Angle- 5 Degrees |
|
Point Location- DIA/3 To DIA/2.4 |
Top of Page | Technical Help Index |
Peripheral
Geometry |
Gundrills, Gun Drills, Whip Guides, Gizmos,
Deep Hole Drilling, Single Flute Gundrills, gundrills, gundrill, gun
drills, gun drill, whip guides, whip guide, gizmo, gizmos, deep hole
drilling, single flute gundrills, detachable head gundrills, gun drill,
sharpening fixture, precision cutting tool.Gundrills, Gun Drills, Whip
Guides, Gizmos, Deep Hole Drilling, Single Flute Gundrills, gundrills,
gundrill, gun drills, gun drill, whip guides, whip guide, gizmo, gizmos,
deep hole drilling, single flute gundrills, detachable head gundrills, gun
drill, sharpening fixture, precision cutting
tool. |