Specifications

Stages in milling and drilling
ProtoMat 95s/II 47
7.0 Stages in milling and drilling
7.1 Securing the PCB on the machine bed
› Make 3.0 mm or 3.05 mm diameter congruent registration holes in
the base materialand drilling base in the x-axis.This can also be
done with any bench drill. Please note that the diameter decreases
during galvanic through-hole plating.
Note: The drilling base should be drilled to a larger diameter, such
as 5 mm, to allow for inaccuracies in the registration holes.
› Move the plotter head to the Pause position.
› Insert alignment pins in the front and rear registration hole strips.
It is essential that you make sure the front registration hole strip in
the machine groove is pushed against the reference pin at the front.
› Position the previously drilled base material and drilling base over
the alignment pins.
The format of the base material should be selected so that the
registration hole strip does not need to be moved more than 10 mm.
› Moving the registration hole strip more than 10 mm reduces the
accuracy of the registration hole system.
› Now additionally secure the base material in this position on all four
sides with adhesive tape (we recommend Tesakrepp 5250).
This prevent the corners of the board bending up.
fig. 33: Securing the board
The alignment pins hold the PCB in position.
They also act as a reference point when double-sided boards are turned.
The adhesive tape holds the board down at the edges. This is
particularly important for contour milling.
1
2
3
4
5
6
1
- Machine bed (aluminium base plate)
4
- 2 mm thick drilling base
2
- 3 mm diameter alignment pins
5
- Adhesive tape
3
- Base material approximately 1.6 mm thick
6
- Registration hole strip