An arbour press would be my choice, however I'd also be checking the required cutting/shearing forces first to make sure I got a big enough one.

Although as John S has said, building a one shot press will be more efficient in the long run, it may be easier to do it in multistages, in terms of constructing the dies.
The dies could be laser cut, however they'd still need finished to tolerance by milling/grinding/polishing, with the cutting edges hardened, tempered then ground to create a durable edge.