Hitachi Koki P 20ST Instrucciones De Manejo página 11

CARBIDE BLADE ASSEMBLY AND
DISASSEMBLY AND ADJUSTMENT OF
CUTTER BLADE HEIGHT (FOR DOUBLE
EDGED BLADE TYPE)
1. Carbide blade disassembly
(1) As shown in Fig. 8, loosen the blade holder with
the attached box wrench.
(2) As shown in Fig. 9, remove the carbide blade by
sliding it with the attached box wrench.
CAUTION
Be careful not to injure your hands.
2. Carbide blade assembly
CAUTION
Prior to assembly, thoroughly wipe off all swarf
accumulated on the carbide blade.
(1) As shown in Fig. 10, lift set plate (B) and insert the
new carbide blade between cutter block and set
plate (B).
(2) As shown in Fig. 11, mount the new carbide blade
by sliding it on the set plate (B) so that the blade
tip projects by 1mm from the end of the cutter
block.
(3) As shown in Fig. 12, fix the bolts at the blade holder
after blade replacement has been completed.
(4) Turn the cutter block over, and set the other side
in the same manner.
3. Adjustment of carbide blade height
CAUTION
If the carbide blade's heights are inaccurate after
above procedures have been completed, carry out
the procedures described below.
(1) As shown in Fig. 13, use the box wrench to loosen
the three bolts used to retain the carbide blade, and
remove the blade holder.
(2) As shown in Fig. 14, after removing the carbide
blade, slide set plate (B) in the direction indicated
by the arrow to disassemble set plate (B).
(3) Loosen the 2 screws holding on the carbide blade
and set plate (A), set plate (B).
(4) As shown in Fig. 15, 16, press the turned surface
of set plate (A) to the wall surface b while adjusting
the carbide blade edge to the wall surface a of the
set gauge. Then, tighten them with the 2 screws.
(5) As shown in Fig. 17, 18, insert a turned portion of
set plate (A) attached to set plate (B) into a groove
on the flat portion of the cutter block.
(6) As shown in Fig. 19, place the blade holder on the
completed assembly and fasten it with the three
bolts. Ensure that the bolts are securely tightened.
Follow the same procedures for the opposite side
carbide blade.
BLADE ASSEMBLY AND DISASSEMBLY AND
ADJUSTMENT OF BLADE HEIGHT (FOR
RESHARPENABLE BLADE TYPE)
1. Blade disassembly
(1) As shown in Fig. 13, use the accessory box wrench
to loosen the three bolts used to retain the blade,
and remove the blade holder.
(2) As shown in Fig. 14, slide the blade in the direction
indicated by the arrow to disassemble the blade.
CAUTION
Be careful not to injure your hands.
2. Blade assembly
CAUTION
Prior to assembly, thoroughly wipe off all swarf
accumulated on the blade.
(1) Insert a turned portion of set plate (A) attached to
the blade into a groove on the flat portion of the
cutter block. (Fig. 17, 20)
Set the blade so that both sides of the blade protrude
from the width of the cutter block by about 1 mm
(Fig. 21)
(2) Place the blade holder on the completed assembly,
as shown in Fig. 22, and fasten it with the three
bolts. Ensure that the bolts are securely tightened.
(3) Turn the cutter block over, and set the opposite side
in the same manner.
3. Adjustment of blade height
(1) Loosen the 2 screws holding on the blade and set
plate (A).
(2) Press the turned surface of set plate (A) to the wall
surface b while adjusting the blade edge to the wall
surface a of the set gauge. Then, tighten them with
the 2 screws. (Fig. 15, 23)
SHARPENING THE RESHARPENABLE BLADES
Use of the accessory Blade Sharpening Ass'y is
recommended for convenience.
1. Use of Blade Sharpening Ass'y
As shown in Fig. 24, two blades can be mounted
on the blade sharpening ass'y to ensure that the
blade tips are ground at uniform angles. During
grinding, adjust the position of the blades so that
their edges simultaneously contact the dressing
stone as shown in Fig. 25.
2. Blade sharpening intervals
Blade sharpening intervals depend on the type of
wood being cut and the cutting depth. However,
sharpening should generally be effected after each
500 meters of cutting operation.
3. Dressing Stone
When a water dressing stone is available, use it
after dipping it sufficiently in water since such a
dressing stone may be worn during grinding works,
flatten the upper surface of the dressing stone as
often as necessary.
English
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