SURFACE MEASUREMENT SYSTEM AND METHOD Russian patent published in 2017 - IPC G01B7/34 

FIELD: metal processing.

SUBSTANCE: present invention elates generally to the field of abrasive surface preparation, and more particularly to methods and apparatus for measuring the profile of a prepared surface. Declared group of inventions includes a surface measurement method and a surface measurement device. Method comprises inspecting a plurality of samples of a first irregular workpiece surface in two dimensions, each of the plurality of samples has substantially the same size, determining, based on the inspections of the samples, total number of surface peaks on each of the plurality of samples, deriving a control limit from a statistical variation of the total number of surface peaks on each of the plurality of samples, control limit for specifying an out-of-tolerance condition for the total number of surface peaks on a second irregular workpiece surface, inspecting a portion of the second irregular workpiece surface in two dimensions, wherein the portion has substantially the same size as one of the plurality of samples, determining, based on the inspection of the portion of the second irregular workpiece surface, a total number of surface peaks on the portion; and comparing the total number of surface peaks on the portion to the control limit to determine whether the second irregular workpiece surface is in the out-of-tolerance condition.

EFFECT: technical result is providing a surface measurement method and a surface measurement device by means of which it is possible to carry out inspection and measurement of a workpiece surface, for example, determine if the surface profile is within desired specifications, control limits, or tolerances by identifying peaks and/or valleys on the surface, as well as it is possible to identify surface variations and irregularities caused by other conditions occurring during surface preparation, such as vibration, temperature, wheel speed, and etc.

20 cl, 7 dwg