A uniform pressure electromagnetic actuator for forming flat sheets

Electromagnetic forming can lead to better formability along with additional benefits. The spatial distribution of forming pressure in electromagnetic forming can be controlled by the configuration of the actuator. A new type of actuator is discussed which gives a uniform pressure distribution in forming. It also provides a mechanically robust design and has a high efficiency for flat sheet forming. An analysis of the coil is presented that allows a systematic design process. Examples of uses of the coil are then presented, specifically with regards to forming a depression, embossing and cutting. Some practical challenges in the design of the coil are also addressed. This work emphasizes the approaches and engineering calculations required to effectively use this actuator.