What is an EDM machine?

Spark-erosion drilling machine refers to an EDM machine that uses the principle of EDM to process holes with a size of less than 5mm. It is used to process small and medium-sized punching dies. Its processing characteristics are not limited by the hardness of metal materials. The template can be quenched first and then the required hole type can be processed by this machine to ensure quality and increase service life. Tool electrode materials can be steel, cast iron, and copper.
The drilling machine is roughly divided into two types according to the different media used. One is a liquid drilling machine. Since the liquid needs to pass through the small holes of the copper rod during processing, it may block the small holes of the copper rod. Therefore, the minimum fine hole that can be processed is 0.15mm, and the depth can only be processed to 350mm. It is widely used. The other is a gas drilling machine. The medium passing through the small holes of the copper rod is gas, so it is not easy to be blocked, and more precise small holes can be processed.