Tool life is evaluated by measuring the routed distance, at the point of tool failure (Destructive Test).
Evaluated by measuring the routed distance to the point where signs of swarf become visible in the routed slot.
Evaluated after routing, by measuring the diameter from the optional point of the bit point.
A tool diameter offset is applied, based on the measured diameter of the NEW router bit before
use.
A 20mm square test piece is routed out (anti-clockwise) and the material is "clipped out" for
measurement.
Routed out anti-clockwise test piece.
Test piece is clipped out from the substrate, the length and width are measured with the microscope,
and the parameter
accuracy is investigated. Calculation Formula
Routing Dimension Accuracy = (W1 + W2) / 2
Tool Bending Amount = [20 - (W1 + W2) / 2] / 2
Burr is evaluated by routed distance until signs of burr occurs, as which point distance routed and size and amount of burr are controlled.
Burr evaluation of external copper layer
The routed surface roughness is evaluated by a visual check.
The roughness can also be measured by a surface roughness test machine, if required, for precise
values.
PRODUCT 01 PCB Drills / Routers / Ultra precision micro-hole drill
