Description Of Machine; Operation; Technical Data; Before Grinding - Proxxon BSG 220 Operating Instructions Manual

Overall view (Fig. 1):
1. Swivel arm
2. Clamp screw for drill shank
3. Positioning prism
4. Knurled screw with spring pressure hold-
down
5. Grinding wheel
6. Dressing device for grinding wheel
7. ON - OFF switch
8. Clamping prism
9. Index knob for rapid length adjustment
10. Drill feed spindle
11. Spanner to clamp the spiral drill
12. Clamp for drill guide
13. Adapter for drill with less than 3 mm in
diameter
14. Allen key for adapter

Description of machine:

With the PROXXON drill grinder BSG 220 you
can perfectly grind all spiral drills with a diameter
between 3 and 13 mm and a standard angle
(118°, DIN 1412). The drill may be of HSS, CrV
or WS (tool steel). With the swivel movement
around two axes during the grinding process the
correct "relief" for optimal drilling is achieved.
With the integrated dressing stone the special
fused alumina grinding wheel can be perfectly
cleaned and smoothened after longer use.
Scope of delivery:
1 pcs. drill grinder
1 pcs. spare grinding wheel
1 pcs. adapter for drills < ø3 mm
1 pcs. clamping bar cpl.
1 pcs. Allen key small
1 pcs. Allen key large

Technical data:

Motor:
Voltage:
Power:
Speed:
Noise development:
Degree of protection II
device
Machine:
Grinding wheel:
Dimensions:
Weight:
Only for use in
dry environments!
Do not dispose of the
machine with your
normal household refuse!
Working range:
Drill diameter:
Length of drill:
Fastening the drill grinder:
Before starting work fasten the drill grinder with
two wood screws to a stable wooden board. The
base plate of the machine is provided with the
necessary bores. The wooden plate can then be
fastened to a table with screw clamps.

Operation:

Before grinding:

Broken off drills must be manually pre-
ground on a buffing machine.
Only correctly ground drills will achieve
perfect results. Therefore please observe the
special information and tables in this manual.
Fig. 2 shows the essential drill data:
Main cutting edge (1)
Relief angle (2)
Chamfer (3)
Chisel edge (4)
Chip channel (5)
11
220 - 240 V, 50 Hz, ~
85 Watt
8000 rpm
< 70 dB(A)
Special fused alumina,
50 x 13 x 27 mm
290 x 200 x 110 mm
approx. 1.7 kg
3 - 13 mm
approx. 55 - 170 mm
Note!
Attention!