| 摘要 |
The method of assembling an electron gun for a cathode-ray tube comprises the steps loading of at least two electrodes (20, 70) one above the other, adjusting the distance between the electrodes along the longitudinal axis of the gun, and loading the electrodes between the two jaws (30, 30', 31, 31', 60, 60', 61, 61') of a positioning tool (35). The further includes positioning of the electrodes in the plane perpendicular to the longitudinal axis by clamping the jaws of the tool in a single direction, until a pressure is exerted on four comers (23) of each electrode and retaining by hot insertion of glass beads (40) into claws arranged on the periphery of the electrode openings of the positioning tool. The tool holds the electrodes in planes perpendicular to the longitudinal axis of the gun. The jaws have a profile intended to cooperate with the shape of the corners of the electrodes in such a way that upon closure of the jaws, the electrodes are brought to their nominal position in the plane perpendicular to the longitudinal axis.
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