Yeah I was actually trying to figure out the best way to do that. I haven't done that robot DLC yet, though I do have it. My plan, was to just build some really strong synth based armor with good resistance mods, possibly even give them ballistic weave clothing, and then give them all really deadly melee weapons. Because, don't they have to have ammo for any ranged weapons you give them? So even if I build a tricked out minigun for them or whateve,r if they run out of rounds, they stop using it right? Which makes trying to send them out as patrols kind of temporary at best.Funny thing to do in Fallout 4 is with that robot add-on pack you can build robots, kit them all as Sentry bots with double laser gatling guns and double shoulder missile launchers and assign them all as the supply lines between the settlements. By the time I had contacted all the settlements I had constant minutemen patrols and there was almost always a super powered murder bot nearby to just unload on anything smaller than an albino deathclaw and turn it to mulch.
Took the challenge out of exploring the wasteland sure, but damned if I didn't make the commonwealth safer.
But if the robots you build have infinite ammo for the cannons you slap on them, I'll definitely be going that route long term. Can you confirm/deny ammo consumption for NPC's you trick out as supply chain leaders? I've never been able to get confirmation on that from any sites I've looked up on.