Additional Types Of Grinding On The Twist Drill - Optimum OPTIgrind GH 10T Betriebsanleitung

4.5

Additional types of grinding on the twist drill

Form A
Application:
Drills with a strong core, as well as with large drill diameters for drilling into solid material.

For ferrous materials and steels up to 1000 N/mm

Advantage:
Good centering during starting drilling and reduction of the feed force.
Form B
Application:
For drilling high-strength steels, for hard spring steels and manganese steels (over 10%)

With 118° point angle for tough materials (chip breaking)
With 130° point angle for high-strength materials over 1000 N/mm

Advantage: Insensitive to impact and no hooking into thin-walled parts
Form C
Application:
For drills with a very strong core as well as for partial hole drills. For particularly tough and

hard materials and forgings (crankshafts, connecting rods, etc.).
Advantage: Good centering and low feed force
Form D
Application:
For drilling into grey cast iron, malleable cast iron and forgings.

For drilling in non-straight gating surfaces such as pipes and shafts. Advantage: Protection

of the cutting corners by the extended main cutting edge.
Insensitive to shock loads.

Good heat dissipation

Form E
Application:
For drilling soft materials such as copper and thin sheet metal.

For drilling blind holes with flat bottom.

Advantage:
Good centring.

No hook-in at breakthrough.

Low burr formation when drilling through.

EN
GH 10T | GH 15T
52
With this drill grinding device adjustable or possible ?
pointed cross cutting edge
sharpened cross cutting edge with
corrected main cutting edge
Cross grinding
Grinding for grey cast iron
Centre point
Originalbetriebsanleitung
2
2
tensile strength
Yes
No
No
Yes
No
Operation
Version 1.1.4 - 2022-09-23