Standard Values For Speeds With Hss - Eco - Twist Drilling; Switching On The Machine; Switching Off The Machine; Quick-Action Drill Chuck - Optimum OPTIDRILL B 17PRO Operating Manual

4.4 Standard values for speeds with HSS – Eco – twist drilling
Material
Steel, unalloyed,
2
up to 600 N/mm
Structural steel, alloyed,
quenched and subsequently
drawn, up to 900N/mm2
Structural steel, alloyed,
quenched and subsequently
drawn, up to 1200 N/mm2
Stainless steels up to 900 N/
mm2
e.g. X5CrNi18 10

The above mentioned indications are standard values. In some cases it may be advanta-
geous to increase or decrease these values.

When drilling a cooling or lubricating agent should be used.

For stainless materials (e.g. VA – or NIRO steel sheets) do not center as the material would
compact and the drill bit will become rapidly blunt.

The workpieces need to be tensed inflexibly and stably (vice, screw clamp).
4.5

Switching on the machine

The drilling machine is switched on in the following order.

Turn the change-over switch into the neutral position (0).

Push the green push-button, and wait two seconds.

Turn the change-over switch into the desired direction of rotation. The rotation of spindle
starts.
4.6

Switching off the machine


Push the red push-button, or turn the change over switch into the neutral position (0).
4.7

Quick-action drill chuck

The bench drilling machine is equipped
with a RÖHM quick-action drill chuck.
In order to clamp a drill bit, hold the upper
part of the quick-action drill chuck and turn
the lower part.
ATTENTION!
Make sure that the clamped tool is firmly and correctly fitted.
Operation
Version 2.0.2 2014-11-04
Cutter diameter
2 3 4 5
1)
n 5600 3550 2800 2240
2)
f 0.04 0.063 0.08 0.10
n 3150 2000 1600 1250
f 0.032 0.05 0.063 0.08
n 2500 1600 1250 1000
f" 0.032 0.04 0.05 0.063
n 2000 1250 1000 800
f 0.032 0.05 0.063 0.08
1): Speed [ n ] in r/min
2): Feed [ f ] in mm/r
3): Cooling: E = Emulsion; oil = cutting oil
Upper part of quick-
action drill chuck
Lower part of quick-
action drill chuck
Original operating instructions
OPTIMUM
M A S C H I N E N - G E R M A N Y
6 7 8 9
2000 1600 1400 1250
0.125 0.125 0.16 0.16
1000 900 800 710
0.10 0.10 0.125 0.125
800 710 630 560
0.08 0.10 0.10 0.125 0.125
630 500 500 400
0.10 0.10 0.125 0.125
Drill sleeve
Drill drift
Img.4-5: Quick action - drill chuck
B17Pro | B23Pro | B26Pro | B33Pro
Cooling
3)
10
1120
E
0.20
630
E/oil
0.16
500
Oil
400
Oil
0.16
Page 37
GB