Burr Evaluation Method
The irregularity around the drilled hole is called a Burr.
-
If the evaluation using stack drilling has been done, the burr usually occurs on the entry side
of
the top panel and
the exit side of the bottom panel - these are the panels evaluated.
-
The burr is inspected by taking images of drilled hole from the top, or measured after
cross-section to confirm the
burr height.
Drilled hole image from the top (Entry side of the top panel, ø3.1mm）
