Tightened distribution of magnetic-head suspension-assembly stat

Details Tightened distribution of magnetic-head suspension-assembly stat Tightened distribution of magnetic-head suspension-assembly stat

1995-05-15

1996-12-31

Hughes, S. Thomas

Metal working

Method of mechanical manufacture

Electrical device making

72 173, 360109, G11B 510

Patent

active

055882005

ABSTRACT:
A process for modifying the static attitude characteristics of magnetic head suspension assemblies by applying an infrared heat source to relieve stresses in specific regions of interest. Each assembly is tested to measure its static-roll attitude with respect to a datum reference plane; the measurement preferably consists of a deflection angle. If the deflection angle is outside the limits of a predetermined allowable tolerance, thereby indicating a region that requires subjection to a torsional stress to bring the suspension within tolerance, an infrared beam is applied specifically to the region while the load beam is held at the torsional deflected state. The infrared source stress relieves the load beam so deflected, allowing it to establish a new free state with minimal residual stress remaining in the material of the beam. The assembly is then retested and retreated, if necessary, under varying angles of torsional stress until its static roll characteristics fall within acceptable tolerances. An adaptive control algorithm may be utilized to optimize the process, so that successive suspension assemblies in a manufacturing batch are automatically processed with progressive efficiency to achieve target set points.

REFERENCES:
patent: 4386458 (1983-06-01), Evans
patent: 4605979 (1986-08-01), Inoue et al.
patent: 4814908 (1989-03-01), Schmitz
patent: 5110758 (1992-05-01), Baskett
patent: 5111348 (1992-05-01), Baba
patent: 5256850 (1993-10-01), Maegawa et al.
patent: 5299081 (1994-03-01), Hatch et al.
patent: 5315454 (1994-05-01), Fukakuss
patent: 5341256 (1994-08-01), Murata et al.

Affiliated with

Also associated with

Rating

Tightened distribution of magnetic-head suspension-assembly stat does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tightened distribution of magnetic-head suspension-assembly stat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tightened distribution of magnetic-head suspension-assembly stat will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1133627