METHOD OF DETERMINATION OF MICROMOTOR TRACTION DETERMINATION AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2008 - IPC G01L5/13 G01M15/00 

FIELD: physics.

SUBSTANCE: inventions are related to force-measurement equipment and may be used for determination of micrometer traction force, in particular, for adjustment of nozzles and design of micromotor and obtainment of valid characteristics of traction both in atmosphere and vacuum. Method consists in the following. In technological chamber that is made as composite of unconnected rigidly immovable and movable parts, and then to working chamber of micrometer working medium is supplied with required parameters. At that required parameters of working medium are established in technological chamber. Then micromotor working chamber nozzle is closed with cover of M_cover mass and summary force P₁ is measured - force of action on weigth force sensor of movable part of technological sensor with working chamber and nozzle of micromotor with absence of working medium flow through nozzle. Then cover is removed and summary force P₂ is measured with availability of working medium flow through nozzle and force of micromotor traction R. Device contains technological chamber, which is hydraulically connected by micromotor working chamber with nozzle, pipeline of working medium supply, which is connected with technological chamber, and facilities of traction measurement. At that technological chamber represents vertically installed cylinder, with slots in ends, in which hollow stem is installed with protuberant ends. Bottom end of stem is plugged and rests on force sensor, and on top end working chamber of micromotor is installed with its nozzle upwards. Stem cavity is hydraulically connected with volume of working chamber and by means of grooves with volume of technological chamber. At that stem has the possibility of vertical displacement in cylinder grooves, diameter of which exceeds stem diameter.

EFFECT: increase of traction measurement accuracy, simplification of reconstruction and reduction of dimensions of measurement device.

2 cl, 1 dwg