US 10,399,151 B2 · Methods of forming holes in a workpiece and associated systems

Abstract

Described herein is a first method of forming a hole in a workpiece, having a first surface and a second surface opposite the first surface. The method includes forming a first hole, having a first diameter, in the workpiece by passing a first cutter through the workpiece from the first surface to the second surface. Additionally, the method includes forming a chamfer in the second surface of the workpiece concentric with the first hole using a second cutter. The chamfer has a second diameter larger than the first diameter. The method further includes forming a second hole, having a third diameter larger than the first diameter, in the workpiece concentric with the first hole by passing a third cutter through the workpiece from the first surface to the second surface.

Claims13

Dependent claims

A method of working a workpiece having a first surface and a second surface opposite the first surface, the method comprising:

forming a first hole, having a first diameter, in the workpiece by passing a first cutter through the workpiece from the first surface to the second surface, wherein the workpiece comprises a plurality of interlaminated layers;
forming a chamfer in the second surface of the workpiece concentric with the first hole using a second cutter, the chamfer having a second diameter which is a maximum diameter of the chamfer and which is larger than the first diameter;
and
forming a second hole, after forming the chamfer in the second surface, having a third diameter larger than the first diameter, in the workpiece concentric with the first hole by passing a third cutter through the workpiece from the first surface to the second surface, wherein the third diameter is larger than the second diameter.

1 more element

A method of working a multi-layer composite workpiece having a first surface and a second surface opposite the first surface, the method comprising:

forming a pilot hole in the multi-layer composite workpiece, the pilot hole extending from the first surface to the second surface, wherein the multi-layer composite workpiece comprises a plurality of interlaminated layers:
forming a chamfer, concentric with the pilot hole, in the second surface of the multi-layer composite workpiece;
and
with the chamfer formed in the second surface of the multi-layer composite workpiece, enlarging the pilot hole, wherein enlarging the pilot hole comprises enlarging the pilot hole to a diameter more than a maximum diameter of the chamfer.

1 more element

Dependencies are inferred from the claim text.

Methods of forming holes in a workpiece and associated systems

Life of this patent

Methods of forming holes in a workpiece and associated systems

Life of this patent

Abstract

Claims13