Browse Prior Art Database

Automatic Tool Block Positioning System

IP.com Disclosure Number: IPCOM000104658D
Original Publication Date: 1993-May-01
Included in the Prior Art Database: 2005-Mar-19
Document File: 4 page(s) / 93K

Publishing Venue

IBM

Related People

Balster, CH: AUTHOR [+2]

Abstract

A method for repeatedly placing multiple tool blocks in a magnetic tester with the utmost speed and precision is disclosed. This disclosure is not limited to a magnetic tester or testing but is applicable to all testers which have a need to hold a head/suspension assembly (HSA) in a particular orientation. The desired end result of the use of this invention would be to place an HSA in the tool block, move the tool block to the inspection station, place the tool block in a burnish tester, followed by the fly height tester, and last to the magnetic tester.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Automatic Tool Block Positioning System

      A method for repeatedly placing multiple tool blocks in a
magnetic tester with the utmost speed and precision is disclosed.
This disclosure is not limited to a magnetic tester or testing but is
applicable to all testers which have a need to hold a head/suspension
assembly (HSA) in a particular orientation.  The desired end result
of the use of this invention would be to place an HSA in the tool
block, move the tool block to the inspection station, place the tool
block in a burnish tester, followed by the fly height tester, and
last to the magnetic tester.

      There are two primary parts involved (Fig. 1): the base piece
3, which is permanently fixed in the tester, and the portable tool
block 1.  There are several portable tool blocks 1 per tester; for
example, one will be loaded with a new part while another one is in
the tester undergoing test.

      The base piece 3 has four locating pins 6, against which the
tool block 1 is located.  The location of the block 1 against the
pins 6 is automatically accomplished by the force of the spring
loaded clamp wedge 5.

      The location and orientation of the the clamp wedge 5 in
relation to the four pins 6 is critical.  The clamp wedge 5 engages a
mating slot on the underside of the portable tool block 1.  The slot
can be seen in the cutout in Fig. 3.  The location of the wedge 5 is
such that it pulls, it does not push, the tool block 1 into the
corner.

      In Fig. 2, the point of contact 3 between the wedge and the
tool block is inside a diagonal line formed between the two outmost
pins 2.  Also, the line of force 1 bisects the distance between the
pins 2, thereby driving the tool block into the corner with equal
force independent of the initial position or contact.  The tool block
could make first contact with either pair of pins 2 with equal
probability.

      The shape of the slot in the bottom of the tool block is
critical.  It must be formed as shown in Fig. 3; the contact area of
the wedge lies between A and B. ...