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1. WO2000016056 - APPARATUS AND METHOD FOR MEASURING THE FORCE EXERTED BY AN ELASTIC ELEMENT

Publication Number WO/2000/016056
Publication Date 23.03.2000
International Application No. PCT/EP1999/006307
International Filing Date 27.08.1999
Chapter 2 Demand Filed 10.04.2000
IPC
G01L 5/00 2006.01
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
5Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
G11B 5/48 2006.01
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
48Disposition or mounting of heads relative to record carriers
CPC
G01L 5/0057
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
5Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
0057measuring forces due to spring-shaped elements
G11B 5/4806
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
48Disposition or mounting of heads ; or head supports; relative to record carriers
4806specially adapted for disk drive assemblies, e.g. assembly prior to operation, hard or flexible disk drives
Applicants
  • MARPOSS SOCIETÀ PER AZIONI [IT]/[IT] (AllExceptUS)
  • CIPRIANI, Riccardo [IT]/[IT] (UsOnly)
Inventors
  • CIPRIANI, Riccardo
Agents
  • TAMBURINI, Lucio
Priority Data
BO98A00052815.09.1998IT
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) APPARATUS AND METHOD FOR MEASURING THE FORCE EXERTED BY AN ELASTIC ELEMENT
(FR) APPAREIL ET PROCEDE DE MESURE DE LA FORCE EXERCEE PAR UN ELEMENT ELASTIQUE
Abstract
(EN)
An apparatus for measuring the force applied by an elastically flexible element undergoing a pre-set elastic deformation, includes a horizontal lever, unbalanced by a known and constant torque, the axis of rotation of the lever defined by a fulcrum. The lever is coupled to a slider, movable in a horizontal direction, and includes a rest surface that touches the slider, while a portion of the flexible element is fixed to a base. The slider is urged to displace in a horizontal direction and, in the course of the displacement, position sensors detect the height of the rest surface - indicative of the height of the slider and of the deformation of the flexible element - and the distance of the contact zone between slider and rest surface from the axis of rotation of the lever. The amount of said distance, when the height of the rest surface indicates the pre-set elastic deformation of the flexible element and the unbalance torque is balanced, is utilized for calculating the force to be measured.
(FR)
L'invention porte sur un appareil de mesure de la force appliquée par un élément flexible, élastique subissant une déformation élastique prédéfinie. Cet appareil comprend un levier horizontal, déséquilibré par un couple connu et constant, l'axe de rotation du levier étant défini par un point fixe. Le levier est couplé à un coulisseau, pouvant se déplacer dans un sens horizontal, et comporte une surface d'appui touchant le coulisseau, une partie de l'élément flexible étant fixée à une base. Le coulisseau est poussé de façon à se déplacer dans un sens horizontal et, au cours du déplacement, des capteurs de position détectent la hauteur de la surface d'appui - ceux-ci indiquent la hauteur du coulisseau et de la déformation de l'élément flexible - ainsi que la distance de la zone de contact entre le coulisseau et la surface d'appui à partir de l'axe de rotation du levier. Cette distance, lorsque la hauteur de la surface d'appui indique la déformation élastique prédéfinie de l'élément flexible et que le couple est équilibré, est utilisée pour calculer la force devant être mesurée.
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