A polishing machine with driving means to move the grinding tool along a precession path and method to use it

摘要

A machine for abrading or polishing a workpiece (5) comprises a holding surface (4) holding the workpiece (5), a head member (7) arranged along a rotation axis (h) to rotate about the rotation axis (h), a working member (8) having a surface for abrading or polishing the workpiece (5) arranged on the head member (7) on the rotational axis for rotation about the rotation axis (h) with the head member, a first driving arrangement for driving a head member (7) and the working member (8) mounted thereon to rotate about the rotation axis, a head mounting arrangement for mounting the head member (7), a second driving arrangement (700-800) for driving the head mounting arrangement to incline the rotation axis of the head member (7) relative to a precession axis intersecting the rotation axis, and for moving the head member (7) to inclined positions with the rotation axis precessed about the precession axis, and a third driving arrangement for relatively moving the head mounting arrangement across the holding surface.