Method for manufacturing motor stamped steel into iron core

Abstract

The invention relates to a method for making iron cores from motor punching sheets. Tighten the tooling, and use the liquid adhesive that is easy to apply and has reliable bonding and shaping after high temperature curing as the adhesive for the iron core to be cured and shaped by the punching sheet. The traditional fixed-point mechanical shaping and curing iron core process produces iron core punches with uniform stress, uniform punching gaps, reliable iron core shaping, and stable working performance, which can prevent core cracking and punching. It can meet the design requirements of high-precision shape and size of iron core, electromagnetic and electrical properties and mechanical strength, which is conducive to improving product qualification rate and improving work reliability. It has a wide range of work applications and can meet different shapes and thickness. The requirements for making high-quality iron cores have strong practicability.

Description

technical field [0001] The invention relates to the technical field of motor component manufacturing, in particular to a method for making iron cores from motor punching sheets. Background technique [0002] At present, in the manufacture of motor cores, a number of punched and formed motor punches ("punches" for short) are usually superimposed and then mechanically solidified and shaped. The more commonly used methods include welding, buckling and riveting. kind. Wherein: the welding method refers to a solidification connection method in which the punches with triangular or circular bumps preset on the edge of the outer circle are superimposed and then melted with argon tungsten arc welding to form a weld; the buckle The stacking method refers to a solidification molding method in which each piece is provided with a buttonhole and a buckle plug at the same position. After being superimposed and fastened, put them into the positioning tool, press them tightly with a fasten...

AI Technical Summary

Problems solved by technology

Since these production methods all have the characteristics of mechanically fixing local points, the quality of the produced iron core is easily affected by the thickness of the punching sheet, the surface burr, the size of the pressing force, the uniformity of the gap between the sheets, and the local limit point of the punching sheet. The constraints of factors such as uneven stress caused by the tightening state can easily cause the basic shape of the iron core to deviate from the design requirements, resulting in uneven gaps between punching sheets, unsatisfactory verticality of the inner hole surface and outer surface, and unsatisfactory overall surface flatness. It even leads to cracking of the motor iron core and local upturning and deformation of the punching sheet, which in turn affects the electromagnetic and electrical performance of the motor iron core, product yield, quality stability, and work reliability. It is difficult to meet the production accuracy requirements of motor cores for high-precision applications

Images