It seems that your father is afraid of you 'becoming a man' and becoming the head of your own family. You've probably enabled his behaviour in the past and he probably fears that you getting married will signify a change in that regards. From what you've said, he's being childish but you just need to let him know where you stand. If you act like a man then he will eventually treat you like one.
Btw, I don't think that uninviting him to your wedding is the right thing to do. You should have a family meeting, if you haven't done so, with both your dad and fiancée present and let him know that if he tries such a thing again you will deal with him. He will be angry but it seems, from what you've written here, that he's actually scared of getting into a physical confrontation with you.
Sending my prayers to you and your family.