Optimum OptiGrind DG 20, Руководство по эксплуатации

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OPTIMUM
M A S C H I N E N - G E R M A N Y
Operation
Version 1.3.2 dated 2015-01-22 Page 23 Original operating instructions
DG20 US
4.9 Reduction of the chisel edge
Also refer to

"Bit geometry“ on page 18
The reducing of the chisel edge is only performed by infeed. The motion lever is not actuated.
The limit stop must be adjusted in a way that the left half of the twist drill is located on the right
outside of the cup wheel. The infeed is taken back again and the bit holder is turned by 180°
when the first side of the drilling with reduced chisel edge is being performed.

Incline the base completely to the rear.

Turn the drill in the bit holder as far as the cutting edges of the drill are offset by 45° to the
match edges on the bit holder.
Fig.4-12: Match edge on the bit holder

Loosen the clamp screw and incline
the base completely to the rear.

Tighten the clamp screw again.
Fig.4-13: Inclining the base

Adjust the base by 90°.

Adjust the drill in a way that the left
half of the twist drill is located on
the right outside of the cup wheel.

Use the infeed screw to reduce the
chisel edge on first side of drill.

Turn the drill with complete bit
holder on base and reduce the sec-
ond side of edge.
Fig.4-14: Reduction of the chisel edge
Bezugskante
Bezugskante
Sch
nei
dka
nte
Sch
nei
dka
nte
match edge match edge
cu
tti
ng
ed
ge
cut
tin
g e
dg
e
Bit holder
Base
Clamp screw
Standard
position