How high can the machining accuracy of Sodick EDM be?

Author:           Date:2025-02-13

1. Dimensional accuracy

    Sodick EDM machine tools have excellent performance in dimensional accuracy. Under good machining conditions, its machining accuracy can reach ±0.001 - ±0.005mm, for example, when machining some small parts of precision moulds, such as inserts of mobile phone moulds, the dimensional accuracy can be controlled stably within ±0.003mm. This is thanks to Sodick's advanced CNC system and high-precision mechanical structure, which can precisely control the movement trajectory of the electrode wire.

2. Shape accuracy

   For shape accuracy, indicators like cylindricity and flatness can also reach a high level. In the processing of cylindrical parts, the cylindricity can reach 0.002 - 0.005mm. taking the processing of some small shaft parts in the aerospace field as an example, through the precision machining of Sodick EDM, the cylindricity of the parts can reach a very high standard and meet the requirements of high-precision assembly.

   In terms of flatness, the flatness error after machining can be controlled between 0.003 - 0.008mm, which is very important for the processing of some electronic component moulds with strict requirements on flatness.

3. Surface roughness

   Sodick EDM can achieve excellent surface roughness. Its surface roughness after processing can reach a value of Ra 0.1 - 0.8 μm. For example, in the processing of some optical moulds or medical parts, by optimizing the processing parameters, such as adjusting the discharge energy, electrode filament tension and walking speed, etc., the surface roughness can reach Ra 0.2 μm or so, to achieve the effect of similar to the mirror, reducing the subsequent polishing and other surface treatment processes.

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