Browse Prior Art Database

Lapping Edge Blending Technique

IP.com Disclosure Number: IPCOM000085536D
Original Publication Date: 1976-Apr-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 23K

Publishing Venue

IBM

Related People

Woolston, RN: AUTHOR

Abstract

The edges and corners of items can be lapped round or blended by providing relative motion between the item and a resilient material covered by an abrasive coating. The item can be a slider body for an air bearing magnetic head, as disclosed in U. S. Patent 3,670,112 issued to J. F. Ruszczyk et al on June 13, 1972.

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Lapping Edge Blending Technique

The edges and corners of items can be lapped round or blended by providing relative motion between the item and a resilient material covered by an abrasive coating. The item can be a slider body for an air bearing magnetic head, as disclosed in U. S. Patent 3,670,112 issued to J. F. Ruszczyk et al on June 13, 1972.

As shown in the figure, a flat, taper flat, cylindrical or spherical item can have its edges rounded, corners blended and roughness smoothed simultaneously. The item is clamped into an assembly that provides either x-y, circular, or zig-zag motions, either separately or in combination.

The item is brought into contact with the resilient backed abrasive coated tape to lap the item smooth. The item will compress the resilient material, causing rounding of the edges and corners of the item when abraded by the coated tape. The abrasive material can be renewed quickly by providing a web of the abrasive coated tape and reeling the used tape to continually provide a fresh surface. The resilient material might also be coated with the abrasive material, or the abrasive material might be embedded therein to provide the resilient lapping surface.

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