Method for punching large-sized stator lamination

A stator punching and manufacturing method technology, which is applied in the manufacture of stator/rotor body, etc., can solve the problem of low material utilization rate, achieve considerable economic benefits, increase production efficiency, and improve production efficiency

Inactive Publication Date: 2009-08-26
上海电气集团上海电机厂有限公司
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of more waste and low material utilization in the above-mentioned large-scale stator punching process, and to provide a method to use a pair of double-piece molds on raw materials to complete 2 parts simultaneously in one process. The method of double-die punching for sheet punching is extremely simple and can be completed in one step, but it has the effect of improving production efficiency and saving raw materials

Method used

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  • Method for punching large-sized stator lamination

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Embodiment

[0015] refer to figure 1 , a 390MW gas turbine generator stator punch, the shape of the stator punch is fan-shaped, the diameter of the outer circle is φ2700mm, and the diameter of the inner circle is φ1230mm. 950mm, the chord length of the inner diameter is about 443mm, and the height is about 780mm. The distance between AA and BB in the figure is 20mm. In order to save raw materials and processing man-hours, two punches are used to complete the same process at the same time, see figure 1 , the fan-shaped piece 100 and the fan-shaped piece 200 are placed upside down in the figure. The outer diameter 52 of the sector piece 100 and the inner diameter 51 of the sector piece 200 are located on the same side, and the inner diameter 53 of the sector piece 100 and the outer diameter 54 of the sector piece 200 are located on the same side, so that complementary placement can make full use of materials. On the raw material, use a pair of double-piece molds to complete the punching o...

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Abstract

The invention relates to the field of motors, in particular to a method for punching a stator lamination of a 390MW gas turbine generator. The method for punching the large-sized stator lamination comprises the steps of positioning and punching, and is characterized in that the punching step is to punch two laminations synchronously in one working procedure on a raw material by using a pair of two-plate dies, wherein the two plates are placed in a way of complementary inner and outer diameters. Adopting the technical proposal, the method greatly saves the raw material, increases the punching efficiency by 100 percent and greatly improves the production efficiency.

Description

technical field [0001] The invention relates to the field of motors, in particular to a punching method for a stator punching piece of a 390MW gas turbine generator. Background technique [0002] As a new product of green, circular and energy-saving power station equipment, gas turbine generator does not use coal as fuel. It is another revolution in the field of thermal power equipment and the development direction of thermal power units. The stator punching of 390MW gas turbine generator is larger in size, its shape is fan-shaped, the diameter of the outer circle is φ2700mm, and the diameter of the inner circle is φ1230mm. 950mm, the inner diameter chord length is about 443mm, the height is about 780mm, the single piece width is about 950mm, the height is about 780mm, the width of the groove shape is 38.4±0.02mm, and the manufacturing precision is high. [0003] There are two commonly used punching methods for the existing motor segments: manual punching and single-chip as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K15/02
Inventor 唐群花蒋长泉
Owner 上海电气集团上海电机厂有限公司
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