Armature iron core compensating method of large-sized brushless exciter

Abstract

The invention relates to an armature iron core compensating method of a large-sized brushless exciter, which includes steps of disposing at least two lead bars on an uppermost stamping sheet of the armature iron core at equal intervals of the circumference after completing stacking each time, performing cold pressing later, measuring the difference between the thickness of the lead bars close to measuring points at an outer ring and an inner ring, and increasing or decreasing number of layers of insulation sheets according to the difference. The armature iron core compensating method of the large-sized brushless exciter is free of affection on original stacking process, lead extrusion process and measuring statistics of the thickness of the lead bars are added on the basis of the cold pressing, then the number of the required insulation sheets can be calculated, and accordingly, the heights of the inner ring and the outer ring of an armature iron core can be kept equal, and stacking quality of the armature iron core is improved.

Description

Technical field [0001] The invention relates to a method for press-fitting quality control of a rotor armature core of a large brushless exciter, which is used in the stacking process of the rotor armature core and belongs to the field of assembling the rotor armature core of a brushless exciter. Background technique [0002] The brushless exciter is a rotating armature type AC generator. The AC output of the rotating armature is connected to the silicon rectifier bridge in the rotating rectifier disk for rectification, and direct current is directly introduced into the rotor winding of the generator. The conventional method of stacking the rotor armature core of the brushless exciter is to perform the stacking in stages according to the requirements of the figure, without any auxiliary materials in the middle. Since the core punching piece is made of silicon steel plate, the thickness of the inner and outer circle is different (usually the outer circle is thinner), and the entir...

AI Technical Summary

Problems solved by technology

Since the iron core punching sheet is made of silicon steel plate, there is a difference in the thickness of the inner and outer circles (usually it is thinner near the outer circle), and the entire armature core is formed by overlapping thousands of punching sheets, although a single punching sheet The thickness error may be small, but the cumulative error is large, which will eventually cause the height of the entire inner and outer circles of the armature core to be inconsistent, thereby affecting the excitation performance