Screw and Nut Advice

I've been tasked with a design that will collaborate pneumatics and thread/nut assembly. The criteria is as folows:

    1. Move slide 18” in 5 seconds or less using standard ½” air ratchet gun
    2. Include in design a brush to clean threads during operation


Does anyone know how I can determine this movement/speed?

Does anyone know of any specialist in this area?

Does anyone have any models of screw assemblies they would be willing to share?

And how can I simulate this in SWX. 

Thanks

SolidworksGeneral