Method for measuring radial circular run-out quantity of iron core inner circle reference axes from stopping openings at two ends of stator

Abstract

The invention relates to a method for measuring the radial circular run-out quantity of the iron core inner circle reference axes from stopping openings at two ends of a stator. The method is applied to indirect measurement of the radial circular run-out quantity of the public reference axes of the stopping openings at two ends for a stator iron core inner circle. The method comprises the steps of using a detection device to contain the stator iron core inner cylindrical surface, enabling center shafts at two ends of a detection device mandrel to be positioned on the center line of the stator iron core inner cylindrical surface, and then conventionally measuring the radial circular run-out quantity of the center shafts at two ends of the detection device mandrel for the stopping openings at two ends. The detection device is composed of the mandrel, an elastic sleeve, a pressing ring, a mandrel nut and a step-shaped screw. The middle of the mandrel is provided with the outer conical surface, the elastic sleeve is cylindrical, non-penetrating groove slits are alternately bi-directionally arranged on the elastic sleeve in the axial direction to equally divide a sleeve body along the circumference, the inner conical surface of the elastic sleeve is matched with the outer conical surface of the mandrel, the mandrel nut penetrates through a central round hole of the pressing ring, and the pressing ring is constrained in an outer circle ring groove of the mandrel nut two nuts and connected with the annular end face of the elastic sleeve through the step-shaped screw. The method has the advantages that the detection device is simple in structure and measurement operation is convenient.

Description

technical field [0001] The invention relates to a method for measuring the radial circular runout from the spigots at both ends of the stator to the reference axis of the inner circle of the iron core, which is applied to the indirect measurement of the radial circular runout of the inner circle of the stator core to the common reference axis of the spigots at both ends. Background technique [0002] In Appendix E of "General Rules for Quality Classification of Small and Medium-sized Motor Products", the inspection of the item: "radial circular runout of the inner circle of the stator core to the common reference axis of the two ends of the spigot" is carried out. The inspection tools used are circular runout measuring instruments and Seam die; the inspection method is: the two ends of the stator are snapped into the seam die without gaps, the measuring instrument is close to the inner surface of the seam die, and the two are kept in good contact. Measure a number of points ...

AI Technical Summary

Problems solved by technology

[0003] The disadvantages of this measurement method are: first, the notch mold with no clearance fit should correspond to the notch of the measured submers one by one, and it is very labor-intensive to achieve one-to-one correspondence

The second is that the stator core is made of laminated thin punched sheets, and the irregularity is relatively large. The values ​​measured on the two sections 10-20mm away from the end face of the stator core only reflect the conditions of "two sections" and do not represent Inner cylindrical surface of stator core

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