CONTROL RING Russian patent published in 2019 - IPC G01B3/34 G01B3/36 

FIELD: physics.

SUBSTANCE: invention relates to a control gauge, by means of which it is verified that at the output of the production line the dimensional characteristics of the fastening correspond to the design of attachment, Control ring for checking fastening comprising expanded head and cylindrical shaft arranged along axis, wherein the barrel comprises at least one coverage strip parallel to the axis, wherein the strip extends circumferentially across the width, wherein the ring comprises a cylindrical tubular body disposed along an axis of rotation between the first end and the second end. First end comprises two adjacent segments of arc, each segment of arc has end wall located in plane perpendicular to axis of rotation of ring, wherein planes of two walls do not coincide and shifted in axial direction relative to first end, and each segment of arc contains at least one side wall located in radial plane passing through axis of ring rotation. Width of arc segment is defined by minimum width of controlled strip, and total width of two segments of arc is defined by maximum width of controlled strip.

EFFECT: invention is aimed at increasing wear resistance and reliability.

14 cl, 8 dwg