LPKF ProtoMat 93s Manual
19
To make a new two-pin system, proceed as follows:
1. First press both two-pin strips into the machine groove,
with the front two-pin
strip pushed against the reference pin to the front of the groove
. The distance
between the two two-pin strips should be about the size of the base material in
the X axis.
2. Fit a drill measuring 3 mm in diameter (better 2.95 mm) so that the distance
between the base plate and the drill point is about 0.5 mm. This is the only
time a tool is not inserted into the collet as far as it will go.
3. Adjust the working depth limiter to the top using the knurled screw, in order to
increase the drill stroke.
4. Move the mill/drill head to HOME and then to the front two-pin strip. Then
manually drill a hole about 4 mm deep in the approximate center by pressing
down the drill head.
Afterwards, do not move the mill/drill head position in the Y
axis
.
5. Move the mill/drill head an exact, known distance (25 mm or 1 inch for
example) the +X direction and define this position as the new HOME position
(
Set Home
). Knowing this dimension is important because you need to know
the exact distance between the pins to prepare material later.
6. Move in the X axis a known amount to the second, rear two-pin strip and drill a
hole about 4 mm deep there too. Remember the distance between the two
holes because this will be the dimension you need when drilling holes in the
backing material and the copper clad.
By no means move in the Y-direction.
7. Now position the drill tool in the drill chuck as far as it will go.
8. Move the mill/drill head to the side. Insert two alignment pins in the holes now
made in the two-pin strip. Check that the pins are firmly inserted as any play
affects alignment accuracy.
9. Mark old holes with a felt pen so they cannot be confused with the new ones.
10.
Position the previously drilled base material and drilling base over the
alignment pins. The holes in the base material and the copper clad should
have been drilled using the system and at the same distance apart as the
alignment pins so the plastic strips do not have to be moved.
11. Now fix the base material thus positioned with adhesive tape on all four sides.
