Holzstar ZSM 560, Instruction Manual

Page: 14 / 32

14 ZSM 560 | Version 1.01
Operation
Fig. 10: Starting the ZSM 560 machine
12.3 Set feed rate
When selecting the feed rate for machining, consider va-
riables such as the hardness and condition of the wood,
the grit of sandpaper used, the desired surface finish,
etc. As a guide, wide or hard workpieces and the use of
finer grit sandpaper require a slower feed rate. The goal
in setting the proper feed rate is to achieve the desired
results for the operation without damaging the work-
piece.
To increase the feed rate, turn the variable feed rate
knob clockwise.
Fig. 11: Set feed rate
12.3.1 Variable feed rate ZSM 560 Vario
The variable feed rate can be set on the control box.
Fig. 12: Set variable feed rate
12.4 Adjust height adjustment
The proper depth of cut for surface grinding depends on
many variables, such as the hardness of the wood, the
width of the workpiece, and the feed rate. Generally, for
coarser grits or softer woods, a 1
⁄ 4 revolution of the
handwheel (0.8 mm depth of cut) per pass is acceptable.
A 1
⁄ 8 turn of the handwheel (0.4 mm depth of cut) is re-
commended for finer grits or harder woods.
Proceed as follows to set the height:
Step 1: Loosen the clamping screw (Fig.13).
Step 2: Turn the height adjustment handwheel counter-
clockwise to lower the grinding drum.
Step 3: Once the correct cutting depth for your operation
is set, retighten the clamping screw (Fig.13).
Fig. 13: Height adjustment
12.5 Grinding process
12.5.1 Rules for grinding on the machine
The grinding operation may only be performed by quali-
fied personnel experienced in working on these machi-
nes. The workpiece is fed with the automatic feed
against the direction of the drum. Feed the workpiece
with the thicker end first. Do not process heavily twisted
or bent workpieces or those whose thickness varies
greatly. Support long workpieces with roller blocks. Use
the height adjustment handwheel to set the grinding
drum to the desired chip removal rate.
Follow these precautions to ensure a safe grinding
process and high-quality results:
- Replace the sandpaper with a higher grit to
achieve a finer final result.
- When making multiple passes on the workpiece, do
not lower the sanding drum more than 1 ⁄ 32" or 1 ⁄ 4".
- If possible, feed the workpiece to the grinding drum
at a 60° angle. This will ensure more effective ma-
terial removal, less stress on the motor, and more
even wear on the abrasive paper.
Engine
Start button
Automatic
table feed
Table feed
rate
Screw
Scale
Hand wheel