VERFAHREN UND VORRICHTUNG ZUR KONTROLLE DER MONTAGE VON HALBKEGELN AUF DEM VENTILSCHAFT.

摘要

Method to control the mounting of half-cones on the valve stem, characterised in that four differential measurements of height (A1), (A2), (A3), (A4) are taken, between three points (A), (B), (C) on the half-cones (3), (4), distributed at 120 DEG around the valve stem (1) and a point (D) on the extreme face (2) of the valve stem (1), making it possible to calculate the three height differences (A1 - A2), (A3 - A2), and (A4 - A2), as well as the absolute values of (A1 - A3), of (A3 - A4) and of (A4 - A1) which must be less than a value "t" which is the perpendicularity tolerance of the plane formed by the extremity of the two half-cones (3), (4), with respect to the axis of the valve (1) and to deduce therefrom the correct mounting of the said half-cones (3) and (4).