High speed flat lapping platen, raised islands and abrasive beads

摘要

A rotatable abrasive lapper machine platen assembly is attached to a lapper machine frame. The assembly has at least:a) a circular-shaped rotatable horizontal platen having i) a front surface andii) a back surface;b) the circular platen having a platen radius, a platen outer circumference and a platen outer periphery;c) the circular platen front surface having an outer annular planar portion where the platen-outer-annular planar portion extends radially to the circular platen outer circumference; andd) a flexible abrasive disk secured in conformable flat contact with the circular platen front surface outer annular planar portion wherein the abrasive disk is positioned concentric with the circular platen.