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CNC Drilling Is One Of The Key Processes In A PCB Manufacturing Facility
- Jan 03, 2018 -

The drilling machine is computer-controlled. The operator selects the right drill program.  This tells the machine which drill to use and the X Y co-ordinates of the holes.  Our drills use air-driven spindles which can rotate up to 200,000 revolutions per minute.  High speed drilling ensures clean hole walls to provide a secure base for good plating on the hole walls.


Drilling is a slow process as each hole must be drilled individually.  So depending on the drill size we drill a stack of one to three PCB panels together.  We can drill holes down to 150 microns in diameter.  To give you an idea of the size, the diameter of a human hair is about 150 microns.  Drill change is fully automatic.  The machine selects the drill to use from the drill rack, checks that it is the correct size, and then loads it into the drill head.


Once all the holes are drilled the operator unloads the panels from the drilling machine and discards the entry and exit material.


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