Working on the machine tool
Fixing and adjustment of cutters
5
5-1
15doc030910
Working on the machine tool
SECTION 5 WORKING ON THE MACHINE TOOL
5.1
Fixing and adjustment of cutters
The cutter head is designed to allow the use of planer blades with the dimensions 3mm x 35mm
x 410mm according to PN/D-54700. The planer blades are locked in place by tightening the
screws that press the wedge shaped bar against the planer blade. The whole assembly is
dinamically balanced. The planer knives should be straight and correctly sharpened (blade angle
should be 400 +/-2 degrees) and the length and thickness deviation should not exceed
+/-0.5mm. If these requirements are not met the balance of the assembly will be upset causing
excessive vibration, bearing wear and the risk of material being thrown back.
The knives set 1.1mm above the cutter head should be tightened using the tool provided (see
section 1.4) Extending the handle or hammering the handle is not permissible.
The planer knives must be less than 25 mm wide
The factory set for the planer knives is 1.1mm above the cutter head. To ensure ensure accurate
and trouble-free planing the deviation should not be more than +/-0.02mm.
To adjust the planing knives use the special tool provided - Section 1.5, Special Equipment
Tool DUKB for cutter adjustment ( relates to the thicknesser)
The tool DUKB is used in the knife adjustment on the thicknesser shaft with planing knives with
the nominal diameter of 122 mm.
Adjustment procedure
1. Set the indicator to zero using the check gauge
2. Insert the knife into a groove of the cutter shaft to about 1.5 mm of height and tighten lightly
the two outside pressure screws.
3. The instrument set to zero should be put onto the cutter shaft
4. Strike the knife with a wooden block and lower the knife to 1.1 mm (read the distance on the
indicator).
5. Repeat the procedure in three positions: middle, left and right (check the knife clearance
1.1mm)
6. Tighten carefully all screws starting from the middle to the left and right
7. Similarly, adjust the remaining knives.
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