초록 ▼

A method of producing a hole in a fiber reinforced composite material workpiece includes the step of providing a cutting tool having a shaft, a cutting head, and an axis of rotation. The cutting head has a diameter which is substantially smaller than the diameter of the hole that is produced. The sh

A method of producing a hole in a fiber reinforced composite material workpiece includes the step of providing a cutting tool having a shaft, a cutting head, and an axis of rotation. The cutting head has a diameter which is substantially smaller than the diameter of the hole that is produced. The shaft has a diameter which is substantially smaller than the diameter of the cutting head. The cutting head has a height which is substantially smaller than the depth of the hole that is produced. The cutting tool is oriented such that the axis of rotation of the cutting tool is substantially orthogonal to the surface of the workpiece. The workpiece is simultaneously machined in both an axial and a radial direction relative to the longitudinal axis of the hole, by simultaneously rotating the cutting tool around the axis of rotation, moving the cutting tool in an axial direction, and moving the cutting tool eccentrically around the longitudinal axis of the hole.

대표청구항 ▼

[ What is claimed is:] [1.] A method of producing a hole in a composite material workpiece, the workpiece being reinforced by a plurality of fibers and having a surface, the hole having a longitudinal axis, a first diameter and a depth, said method comprising the steps of:providing a cutting tool ha

[ What is claimed is:] [1.] A method of producing a hole in a composite material workpiece, the workpiece being reinforced by a plurality of fibers and having a surface, the hole having a longitudinal axis, a first diameter and a depth, said method comprising the steps of:providing a cutting tool having a shaft, a cutting head, and an axis of rotation, the cutting head having a second diameter which is substantially smaller than the first diameter of the hole that is produced, the shaft having a third diameter which is substantially smaller than the second diameter of the cutting head, the cutting head having:a height which is substantially smaller than the depth of the hole that is produced;an axial machining surface extending substantially continuously across said second diameter; anda radial machining surface;orienting the cutting tool such that the axis of rotation of the cutting tool is substantially orthogonal to the surface of the workpiece; andsimultaneously machining the workpiece in both an axial and a radial direction relative to the longitudinal axis of the hole, by simultaneously rotating the cutting tool around the axis of rotation, moving the cutting tool in an axial direction, and moving the cutting tool eccentrically around the longitudinal axis of the hole.