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Loosen
clamp screw holding clamp wedge (Pt. 2) so that opening is wide enough
to accept cutoff insert.
Install
insert into holder. Be sure pocket is free of chips and oil and
that insert is pushed all the way in so that it bottoms out at back end
of opening.
Clamp
insert securely by retightening clamp screw so that wedge holds insert
evenly and fully.
Tool
is now ready for use. Mount circular tool holder into machine and
set cutting edge of tool to centerline of workpiece, same as any other
tool.
When
cutting edge needs resharpening, remove worn insert only (Do not disturb
circular tool in machine toolpost) and replace with sharpened insert as
per previous instructions. Since clamping pressure is upward on
insert, replacement insert will be on same centerline as original
insert, thereby eliminating the need to reset tool for center
height. Also, since inserts are identical in form and have a
parallelogram configuration, they will maintain same workpiece lengths
and diameters. Machine should be producing perfect parts again in
less than a minute.
For
best size control and for longest life, insert should be sharpened as
soon as cutting edges start to show wear of .005" maximum.
To
sharpen dull insert, install insert into RQCSF-CO sharpening fixture and
clamp securely. Tap insert down to be sure it is fully seated
against bottom face. Mount fixture on magnetic chuck of surface
grinder horizontally or vertically depending on the wheel being used.
Remove
stock evenly from entire top surface of insert so that top and bottom
surfaces are parallel within .001" and as smooth as possible. It is
essential that the top surface of the insert is flat and free of steps
since steps would cause insert to not repeat center setting when
remounted in holder and could also result in lack of rigidity and
possible breakage of insert and damage to holder.
Grind
off only minimum amount necessary to remove wear of cutting edges.
Remember, inserts should be resharpened prior to .005" wear.
Always
spark out final grinding passes for better finish and longer tool life,
honing of top surface will further increase tool life and improve
finish.
Wheel
grade recommendation for carbide inserts: CMD180 R100 B-1/8
Style
of wheel: If grinding horizontally Use D1A1
If grinding vertically
Use D11V9
Take
.0001/.0003" deep passes if grinding dry.
Take
.0002/0005" deep passes if grinding wet.
For
best results true up wheel as per grinding wheel manufacturer's
instructions as needed.
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WARNING ********************
It
is always important to be certain that insert is clamped securely in the
tool holder. If insert is not clamped securely, machine damage or
personal injury can result.
Extra
care must be taken when you have resharpened the insert down to about
3/8" total thickness since it will no longer be possible to clamp
the insert in the holder. This is done intentionally so that
insert will not be used when it's thickness is less than that which is
required to support the cutting edge.
Therefore,
it is important to be certain that clamp is actually clamping on insert,
holding it securely in the holder and not merely bottoming out.
********************
WARNING ********************
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