Patent ID: 7509896
Filing Date: 2009-03-31
Classification: B23B,H01R,Y10T

Abstract:
1. A process for in situ machining of the peripheral surface of a rotating part, such as the commutator or slip-ring of an electric motor, which rotating part rotates about an axis (XX′) and which is fixed to a stationary frame, said process comprising; securing a machining tool having a cutting part mounted for movement on a tool holder plate to said stationary frame, moving said tool along an in-feed line (YY′) substantially perpendicular to the axis (XX′) toward said part to be machined, said tool also moving pivotally about an axis (ZZ′) which is substantially perpendicular to the line (YY′) and axis (XX′), wherein, by combining rotation of the tool around the ZZ′ direction and translational movement along the in-feed line (YY′) of the center of rotation around axis (ZZ′), the machining tool is displaced in a plane perpendicular to the axis (ZZ′) such that the trajectory of the cutting part includes at least one straight part parallel to the axis (XX′) of rotation.