Something else to think about is customer safety, and to be honest your descriptions are not adding up to good to me.
Like for instance, you want it so a customer can walk up and bolt his part down and hit a button and the job gets done. But this is going to go on for 10 hours a day? You really do not want anything like this that a customer can even get close to, much less operate. You will be bankrupt, and even in jail for involuntary manslaughter, or worse.
Now more exact descriptions on what you are really doing/offering here would be a plus. But yes this does sound like a good job for a purpose built machine with a built in pick & place thing going on with the metal stock, air or hydrolic hold down system, and nothing but a button to push for the customer to say, yea I want one.
I am not understanding why these cant be pre made and on a shelf for the customer? ANd as simple as the base job itself is there are possibilities of paying someone to make them for you instead of buying/building a machine.
But just for a quick and dirty suggestion of a machine that could do the job ( not with any customers involved), and handle this amount of workload at a price that fits your budget, the Tormach PCNC 1100. This is a well built machine for this price range with great survice from the company and reliability from the machine. BUt it or any other machine in this class is nothing you ever want to let customers get anywhere close to. Without knowing anything else about your product and exactly why/how you want the customer involved my best suggestion is a purpose built machine with much thought put into the design around its exact role to be played with the customer. It may even could be very reasonable on price ot build such a machine, depending on many need to know important factors.
Jess
GOD Bless, and prayers for all.