Method for manufacturing motor stamped steel into iron core

Abstract

The invention relates to a method for manufacturing motor stamped steel into an iron core. The method is characterized in that a set of positioning-compressing tool which takes the appearance of the stamped steel and a middle hole in the stamped steel as limiting reference settings, and is convenient for efficient overlapping, reliable curing-molding and efficient production of the iron core is adopted; and a liquid adhesive which is convenient to coat and reliable in bonding and molding after curing at a high temperature is taken as a bonding agent for curing and molding the stamped steel into the iron core. A process of integrally bonding the stamped steel and curing and molding the iron core is adopted, so that a process of molding and curing the iron core in a conventional fixed pointmechanical way is avoided; stress of the manufactured iron core stamped steel is uniform; the stamped steel is uniform in gaps; iron core molding is reliable; the working performance is stable; the phenomena of influences on product quality and working service life caused by cracking of the iron core, tilting of the stamped steel can be avoided; the designing demands on high-precise shape size, electromagnetic and electric performance and mechanical strength of the iron core can be met; the qualified product ratio and working reliability are increased; a wide application range is achieved; therequirement on high-quality iron cores manufactured by stamped steel of different shapes and thicknesses can be met; and very high practicability is achieved.

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 are mainly welding, buckle and riveting methods. 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...

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