Patent ID: 7673381
Filing Date: 2010-03-09
Classification: G11B,Y10T

Abstract:
1. A method of manufacturing a head suspension that comprises a base to be attached to a carriage of a hard disk drive and turned around a spindle of the carriage, a load beam including a rigid part and a resilient part non-integral to the rigid part and configured to apply load onto a head that is arranged at a front end of the load beam in write and read data to and from a disk arranged in the hard disk drive, and a flexure attached to the load beam, supporting the head, and having read/write wiring patterns connected to the head, the method including: forming a flat plate framework for formation of the rigid part wherein the rigid part in finished form includes: said forming of said flat plate framework including providing a rigid part flat portion corresponding to said front end flat portion and said base end flat portion and defining a flat portion plane in which lay said inflection curved edges, and providing rail formation margins extending flat outward in said flat portion plane from said base end side edges, said front end side edges, and said inflection curved edges, and portions of said rail formation margins extending outward from said inflection curved edges forming longitudinally curved rail formation margins, said rail formation margins being configured to be formed into rails; and forming deformable parts in said longitudinally curved rail formation margins at positions adjacent each of said inflection curved edges, said deformable parts being rendered deformable by weakening said longitudinally curved rail formation margins adjacent said inflection curved edges in comparison to other portions of said rail formation margins; and forming the rails by bending the formation margins to form bent portions rising out of said flat portion plane and deform said deformable parts into curved rail portions.