Electrical discharge machining or EDM shapes metal by creating sparks that melt tiny portions of the workpiece. EDM is an exceptionally diverse process that generates no cutting forces. This allows the production of fragile parts that cannot take the stress of conventional machining. This DVD examines the components of an EDM system and the EDM erosion process. The two forms of EDM, ram and wire, are featured. You'll learn how this exceptionally diverse thermal cutting process produces products such as tiny electronic connectors, highly accurate medical parts, automotive stamping dies, and aircraft body panels. EDM's many benefits, as well as its limitations, are highlighted along with important definitions like duty cycle, gap distance, kerf, and more.
ELECTRICAL DISCHARGE MACHINING INTRODUCTION
- Parts produced by EDM
- Materials that can be EDM'd
- Benefits of EDM process
- Limitations of EDM process
THE EDM PROCESS INTRODUCTION
- Components of the EDM system
- The EDM erosion process
- EDM'd workpiece surface layers
- The EDM cycle time
- Gap distance & overcut in ram EDM
RAM EDMING INTRODUCTION
- Ram EDM subsystems
- The power supply
- The ram dielectric system
- The ram electrode
- The servo system
WIRE EDMING INTRODUCTION
- Wire EDM subsystems
- The power supply
- The wire dielectric system
- The wire feeding mechanism
- The wire positioning system
- Gap distance & overcut in wire EDM
- EDM holemaking machines
- Safety precautions in EDM