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Self-Adjusting Damper Assembly

IP.com Disclosure Number: IPCOM000047455D
Original Publication Date: 1983-Nov-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 2 page(s) / 25K

Publishing Venue

IBM

Related People

Rosenberg, AM: AUTHOR

Abstract

This design provides an easily adjusted and maintenance-free damper for servo-controlled carriage systems used in connection with magnetic disk files. Damping is required to obtain minimum carriage seek times. The damper friction pad 1 is pneumatically loaded using a short stroke piston 2 diaphragm 3 system. The diaphragm eliminates sealing problems, and requires very little room, allowing for a low profile design which fits easily between the carriage 4 and bed 5. Being pneumatically loaded (8) allows for easy external adjustment. Damping pressure can be varied with the use of a pressure regulator mounted external to the machine. The friction pad 1 is mounted to a flexure 6 which is designed to provide a low spring rate working against the load pistons, and high stiffness in the direction of carriage travel.

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Self-Adjusting Damper Assembly

This design provides an easily adjusted and maintenance-free damper for servo-controlled carriage systems used in connection with magnetic disk files. Damping is required to obtain minimum carriage seek times. The damper friction pad 1 is pneumatically loaded using a short stroke piston 2 diaphragm 3 system. The diaphragm eliminates sealing problems, and requires very little room, allowing for a low profile design which fits easily between the carriage 4 and bed
5. Being pneumatically loaded (8) allows for easy external adjustment. Damping pressure can be varied with the use of a pressure regulator mounted external to the machine. The friction pad 1 is mounted to a flexure 6 which is designed to provide a low spring rate working against the load pistons, and high stiffness in the direction of carriage travel. The low spring rate allows the design to be self- adjusting. As the pad wears, the pistons will increase the flexure deflection with very little change in applied force. Being pneumatically loaded insures a constant force over the entire length of travel even with slight misalignments between the damper and friction bar 7.

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