DEVICE FOR FRICTIONAL FORCE MEASURING Russian patent published in 2009 - IPC G01N19/02 

FIELD: physics, trials.

SUBSTANCE: invention concerns field of trial of materials, in particular, devices of measuring of frictional force and estimate of spatial standing of vector of friction. Device for frictional force measuring contains the basis, the holder of the sample mounted on it, the chariot with guiding, the rod located perpendicularly of effective area of the sample with possibility of a translational motion in guiding, on which one extremity disposes a loading knot, and on other the holder of counterbody in the form of core with hunting possibility, measuring instrument of frictional force and spring, anchored on the chariot opposite from the different legs of the holder of counterbody in a plane, a parallel effective area of the sample, drive unit of travel of one of holders. The device is also supplied with flexible coupling, pairing rod with the holder of counterbody and fixing their cross angular standing, blob erected coaxially to rod and disposed inside the coupling between end faces of a rod and the holder of counterbody in such a manner that the spatial hunting of the holder of counterbody concerning its point of contact to blob is provided, and fixing of standing of blob is provided with coupler elasticity in an axial direction at the expense of its installation with a prestress negative allowance, additional measuring instrument of frictional force and the additional spring, erected on the chariot opposite from the different legs of the holder of counterbody in plane of parallel effective area of the sample and is orthogonal to a direction of installation of an initial measuring instrument of frictional force and spring.

EFFECT: increase of accuracy of estimate of frictional force and expansion of functionality of device.

3 cl, 1 dwg