​​​​​​​EDM processing: injection mold

EDM processing plays a key role in injection mold manufacturing, not only improving the accuracy of the mold, extending the service life of the mold, but also enabling complex mold designs to be realized.

Electric discharge machining can process mold parts that are difficult to process with traditional machinery. Universe Plastics engineers will take you to understand the detailed features and precautions of EDM processing of injection molds.

Advantages of EDM processing injection molds

1. Processing of complex shapes

EDM can process complex geometries that are difficult to handle with traditional methods, such as deep cavities, sharp angles, and subtle features. It is very effective in manufacturing detailed parts of molds, especially small grooves, pores and edges in mold cavities.

2. Processing of high hardness materials

EDM can easily process high-hardness mold materials, such as hardened steel, titanium alloys, etc. These materials are usually used to make molds with high wear resistance. Traditional machining methods may be difficult or impossible to process these materials efficiently.

3. Improve mold accuracy

EDM has high processing accuracy and can achieve micron-level processing accuracy, which is very important for molds that require high precision, such as injection molds for tiny parts. Through EDM processing, the matching accuracy between the mold cavity and the core can be ensured and mold processing errors can be reduced.

4. Processing inaccessible parts

In mold manufacturing, some locations are inaccessible using traditional machining tools due to design reasons. EDM can process these inaccessible areas by bringing electrodes into contact with the material.

5. Improvement of surface finish

The surface finish after EDM processing is higher, which can reduce subsequent polishing and trimming processes, thereby improving production efficiency and reducing processing costs.

6. Remove the broken knife or repair the mold

During the mold manufacturing or repair process, EDM can be used to remove tools that are broken in the workpiece, or to perform partial repair of the mold. In this case, EDM is more effective than traditional methods.

Precautions for EDM processing of injection molds

1. In actual operation, EDM processing of injection mold parts needs to follow necessary process specifications. The electrodes that need to be split by the design department must meet the requirements of precision processing, especially the processing of thin and delicate parts.

2. EDM processing content must produce relevant processing drawings, use accurate positioning methods, and calculate accurate processing data. Because many parts are processed with tiny parts, it is easy to mistake the shape before processing, so detailed 3D data must be provided to the processing personnel.