The 22-year-old beat Kenyan Benson Gicharu Njangiru 3-0 in the quarter-finals, with the top four in Baku sure of going to Brazil.
Britain's Pat McCormack and Josh Kelly also qualified for Rio in the light-welterweight and welterweight categories.
Britain now has boxers qualified in all 10 men's weight divisions, closing the door to any professionals, and two in the women's competition in what will be the country's biggest Olympic team yet.
Amateur boxing's governing body AIBA has allowed professionals to compete in Rio, but they must qualify at a tournament in Venezuela next month and only in divisions where their countries have not yet already secured slots.
(Reporting by Alan Baldwin, editing by Pritha Sarkar)
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