Optimum OPTIDRILL B 23PRO - Drilling Procedures and Tool Handling

OPTIMUM
MASCHINEN - GERMANY
Operation
Version 2.0.2 2014-11-04 Page 37Original operating instructions
B17Pro | B23Pro | B26Pro | B33Pro GB
4.4 Standard values for speeds with HSS – Eco – twist drilling
 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.
Img.4-5: Quick action - drill chuck
ATTENTION!
Make sure that the clamped tool is firmly and correctly fitted.
Material
Cutter diameter
Cooling
3)
2345678910
Steel, unalloyed,
up to 600 N/mm
2
n
1)
5600 3550 2800 2240 2000 1600 1400 1250 1120
E
f
2)
0.04 0.063 0.08 0.10 0.125 0.125 0.16 0.16 0.20
Structural steel, alloyed,
quenched and subsequently
drawn, up to 900N/mm2
n 3150 2000 1600 1250 1000 900 800 710 630
E/oil
f 0.032 0.05 0.063 0.08 0.10 0.10 0.125 0.125 0.16
Structural steel, alloyed,
quenched and subsequently
drawn, up to 1200 N/mm2
n 2500 1600 1250 1000 800 710 630 560 500
Oil
f" 0.032 0.04 0.05 0.063 0.08 0.10 0.10 0.125 0.125
Stainless steels up to 900 N/
mm2
e.g. X5CrNi18 10
n 2000 1250 1000 800 630 500 500 400 400
Oil
f 0.032 0.05 0.063 0.08 0.10 0.10 0.125 0.125 0.16
1): Speed [ n ] in r/min
2): Feed [ f ] in mm/r
3): Cooling: E = Emulsion; oil = cutting oil
Drill sleeve
Drill drift
Upper part of quick-
action drill chuck
Lower part of quick-
action drill chuck