Device and a Method for Machining Printed Circuit Boards
AssigneeSkybrain Vermögensverwaltungs GmbH
InventorsJochem Berkmann, Bernd Fokuhl, Markus Winterschladen
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Abstract
The invention relates to a device and to a method for machining, in particular, drilling printed circuit boards (PCB) having several conductive layers (Ln). The device has a drilling spindle (2) bearing an interchangeable drilling tool (1). The drilling tool (1) has a lateral surface that has a non-conducting layer (9) at least in sections, and a core (8) that is conductive at least in sections.
Claims11
1-10. (canceled)
A device for drilling printed circuit boards (PCB) having several conductive layers (Ln) using a drilling spindle bearing an interchangeable drilling tool, wherein the drilling tool has a lateral surface that is provided with a non-conductive coating at least in sections, and a core that is conductive at least in sections.
A method for machining several conductive layers (Ln) that are positioned on top of each other by means of an interchangeable drilling tool that is conductive in sections and non-conductive in sections, whereby between the drilling tool and the nth conductive layer (Ln) a difference in voltage (ΔV) is generated, and whereby the signal that can be tapped upon contact of the tip of the drilling tool with the nth conductive layer (Ln) is used to determine the drilling depth and/or for determining the position of the nth conductive layer (Ln).
Dependencies are inferred from the claim text.