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Hardstop Adjustment for Variable Pressure-Spindle Disk Clamp

IP.com Disclosure Number: IPCOM000103370D
Original Publication Date: 1990-Oct-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 1 page(s) / 40K

Publishing Venue

IBM

Related People

Malagrino, GD, Jr: AUTHOR [+4]

Abstract

A tooling provides a hardstop mechanism for vertical travel drawrods that limits the amount of pressure applied on a disk.

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

Hardstop Adjustment for Variable Pressure-Spindle Disk Clamp

      A tooling provides a hardstop mechanism for vertical travel
drawrods that limits the amount of pressure applied on a disk.

      As illustrated in the figure, clamping device 1 is attached to
an internal common drawrod 2, and therefore creates the initial
clamping motion to the external clamp ring 3, as the drawrod is
retracted into the disk chuck 4. The inner cylinder 5 screws into the
device 1 to the appropriate distance to provide the optimum downward
distance of the device 1 into the chuck 4.

      This is accomplished by the bottom surface of 5 coming into
contact with the chuck inner surface 6.  Device 1 has a slot 7 by
which an allen wrench can be inserted into the holes drilled in
cylinder 5 and used to turn cylinder 5 for adjustment.  Once piece 5
is adjusted into place, a set screw 8 holds the cylinder 5 from
turning.  Therefore, this creates a hardstop so that no matter how
much additional spring/air pressure is applied by the drawrod 2, the
radial force that the disk will observe is constant.  Once the
drawrod 2 is extended the pressure will be released from the clamp
ring 3 and the disk will be unclamped.

      Disclosed anonymously.