Browse Prior Art Database

Free-Motion Disk Clamping Actuator

IP.com Disclosure Number: IPCOM000111827D
Original Publication Date: 1994-Apr-01
Included in the Prior Art Database: 2005-Mar-26
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Malagrino Jr, GD: AUTHOR [+3]

Abstract

Disclosed is a method for clamping media disks to a spindle while allowing the clamping portion to be free spinning in the unclamped state, thus allowing for ease of cleaning and minimizing any accidental adjustment of clamping pressure on standard draw rod designs.

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This is the abbreviated version, containing approximately 100% of the total text.

Free-Motion Disk Clamping Actuator

      Disclosed is a method for clamping media disks to a spindle
while allowing the clamping portion to be free spinning in the
unclamped state, thus allowing for ease of cleaning and minimizing
any accidental adjustment of clamping pressure on standard draw rod
designs.

      The Figure shows the disk registration height with disk 7
resting on the registration surface.  Part 2 is a threaded cylinder
which slides over the clamp pull bar 8.  The plastic portion 5
threads down the cylinder 2 so that when the pull bar 8 is retracted
into the chuck 1, the plastic comes down and creates a radial force
on the ring 6, thereby holding the disk 7 in place.  Once plastic
portion 5 is adjusted to the proper height, achieving the correct
amount of clamping pressure, nut 4 is turned down to lock portion 5
in place on the cylinder 2.  The cylinder 2 is held to the pull bar 8
by a screw 3 which has its head approximately 1 mm above the top
surface of cylinder 2.  This allows pieces 2, 4, and 5 to free spin
when unclamped around the pull bar shaft 8.  When the pull bar 8 is
retracted into the chuck 1, the 1 mm clearance is taken up and the
head of the screw 3 applies the pressure on the top of cylinder 2 to
achieve the clamp force.