Many people are asking, can the spark machine process without touching the object? Yes, because it is an electric discharge tool, the electrode does not make any contact with the material, the workpiece is corroded by electric discharge, and the machining process does not have a macro cutting force.
When the spark discharges, enough instantaneous explosive force is small local average to cause deformation and displacement of the workpiece. It can be "flexible", because the tripod extends directly to use electricity and heat to remove the strength and hardness of the metal material. The workpiece material has very little, so it can be processed with soft tool electrodes for hard work.
The spark machine can be applied to metal materials that are difficult to process, and the material is removed by the electrical and thermal effects generated by the discharge, so the determination of whether the material is suitable for EDM is related to the conductivity and thermal properties of the workpiece. This can not only break the limitations of traditional tools, but also process hard workpieces with soft tools, and even process superhard materials such as polycrystalline diamond and cubic boron nitride. Currently, most electrode materials are copper or graphite, so tool electrodes are easier to process.
Spark machining can process parts with special needs, such as thin-walled, small elasticity, low rigidity, small holes, small holes with special shapes, deep small holes and other parts with special requirements. Because the electrode and the object will not contact, and will not produce cutting force, so it is only suitable for micro processing.
Spark machining can process surfaces with complex shapes. Because the spark machine can easily move the electrode state to the material, the spark machine is also suitable for processing some complicated materials, especially the use of numerical control technology to make complex-shaped parts and simple Electrode processing becomes a reality.
