Browse Prior Art Database

Head Suspension Assembly for Servo Writing

IP.com Disclosure Number: IPCOM000116490D
Original Publication Date: 1995-Sep-01
Included in the Prior Art Database: 2005-Mar-30
Document File: 4 page(s) / 52K

Publishing Venue

IBM

Related People

Ishikawa, J: AUTHOR [+4]

Abstract

Disclosed is a structure of a head mount plate in a head suspension assembly for servo track writing in Hard Disk Drive.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Head Suspension Assembly for Servo Writing

      Disclosed is a structure of a head mount plate in a head
suspension assembly for servo track writing in Hard Disk Drive.

      In the current servo writing system, as shown in Fig. 1,
machining portion of the actuator is used for being pushed by a servo
writer for defining the actuator's position.  This machining portion
must be precisely cut and fined.

      Most of the current actuators are made of aluminum.  Since the
aluminum surface is so rough without machining, the surface of the
portion used for servo track writing must be precisely fined.

      The new actuator assembly for servo writing has a mount plate
that can be pushed by a pusher of a servo writer as shown in Fig. 1.
The pusher pushes head-mount plate, and the contact point (point c)
between pusher and mount plate is defined by the following geometric
assumption:
  1.  The pusher force is toward the center of head swage (line B).
  2.  The contact line of mount plate (line A) is perpendicular to
line
       B.

      The mount plate is made by a punch process.  The edge of mount
plate is precise in using the servo write datum.

      This new structure realizes the cost reduction by removing the
machining process of the actuator's edge (Fig. 2).