Core lamination manufacturing method

Abstract

The invention discloses a method for manufacturing iron core laminations. After the iron core laminations of the same type are stacked into a stack of iron core laminations, they are connected and fixed at the excess portion beyond the finished iron core, and then wire cutting, laser cutting or other processing methods are used to Cutting forms the middle shape of the iron core, and then installs the inner pressure plate to compress the stack of scattered iron cores and then cuts the shape of the iron core. The accuracy of the cutting process is used to ensure the accuracy of the size and position of the iron core. . In the manufacturing method of the core laminations of the present invention, the tooling used is only a pressure plate with good parallelism and common fasteners, which requires less accuracy of the tooling, and can solve the problem of silicon steel sheet crystal cracking and partial insulating layer in the traditional lamination method. The problem of damage, loss and high heat generation can fully fill the gaps between the core pieces, strengthen the heat conduction of the core, and eliminate the fanning phenomenon of the core and the vibration noise of the core.

Description

technical field [0001] The invention relates to an iron core manufacturing process, in particular to an iron core lamination manufacturing method. Background technique [0002] Iron core is an important part of transformers and motors. When the motor is working, the iron core has to bear the combined effects of mechanical vibration, electromagnetic force and heat. [0003] The iron core of the motor is generally punched, and the iron core lamination means that a certain number of punched sheets are aligned, pressed, and fixed into an accurate, compact and suitable whole. Generally, circular iron cores use tire-expanding core laminations and press-fitting tools to tighten the iron core to make the inner circle neat, and then press the iron core on the press machine. Rectangular or other shaped iron cores also adopt similar principles. bit tooling for lamination. [0004] Punching is suitable for thicker (≥0.15mm) core pieces. The mold is expensive to make, and the punching...

AI Technical Summary

Problems solved by technology

Manual gluing has low labor productivity, and the thickness of the glue layer is difficult to accurately control; machine gluing requires a large investment, which is not suitable for small-scale production, and has certain requirements for the strength of loose pieces, which can easily cause broken pieces, and is not suitable for small and micro Manufacture of the iron core; the brushing method usually uses the method of first bonding the blanks into stacks and then wire-cutting the iron core. Due to the poor conductivity of the adhesive layer, wire cutting is difficult, time-consuming and easy to break, which greatly reduces labor productivity.

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