Machining method for thin and complex parts

Abstract

The invention discloses a machining method for thin and complex parts. The machining method comprises the following steps that a concave die with a workpiece strip is firstly placed on a worktable; then a punch is placed on the workpiece strip; the working pressure of a hydraulic press is set; and the punch is used to press the workpiece strip, the concave die is elastically deformed by applying the pressure by the hydraulic press, the workpiece strip is deformed by stretching and pressing, and the punch continues to apply the pressure to make the workpiece strip completely separated, so thata workpiece with the same shape as a template is obtained. The machining method for the thin and complex parts has the advantages of simple and convenient operation, low die cost, low production costand high production efficiency, and can be used to manufacture not only insulating end plates but also thin parts of other materials.

Description

technical field [0001] The invention belongs to the technical field of motor manufacturing, and in particular relates to a processing method for thin complex parts. Background technique [0002] The insulating end plates at both ends of the motor core play an important role in protecting the insulation of the slot and improving the reliability of the insulation. Usually, in the production process of micro-motors, the insulating end plate is generally punched out with a motor punching die first, and then punched and blanked or machined to reach the inner and outer circle dimensions. [0003] In the trial production of new motor products and small batch production (the armature punching die is not put into production), the iron core punching is processed by wire cutting, and the stator and rotor insulation end plates of the motor have the same shape as the punching sheet, but because the material is non-conductive, It cannot be processed by wire cutting. Because there is no ...

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Problems solved by technology

[0003] In the trial production of new motor products and small batch production (the armature punching die is not put into production), the iron core punching is processed by wire cutting, and the stator and rotor insulation end plates of the motor, although the shape is the same as the punching sheet, are not conductive because of the material. Cannot be processed by wire cutting method

Because there is no punching die, it is impossible to punch the insulating end plate, and it is often replaced by coating the end face of the iron core with insulating varnish, but its reliability is not as good as that of the insulating end plate

[0004] In recent years, with the widespread application of CNC machine tools and computer engraving machines, some people hope to use CNC machine tools or computer engraving machines to process insulating end plates, but practice has proved that CNC machine tools are time-consuming and labor-intensive, and the scrap rate is high. High, which seriously affects and restricts the production of this part

Some small motor insulation end plates with low structural strength cannot be machined at all

Computer engraving machine can process, but the cost is too high

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