This is why I suggested the bolt pipe and hand nut. It makes a stop that keeps the vise or part from spinning if it grabs. This wont prevent it jumping when the drill breaks thru. You need to be on your toes with machine tools they will injure you if given the chance. I believe the drill press is one of the most over looked as to safety, No gloves ( chips will grab them and suck you in), Wear a hat or keep hair tied back, ( the spinning spindle chuck will grab hair and scalp you), safety glasses, no loose clothing.
I have seen shops that up graded fro belt drive drill presses to bigger gear drive machines and due to the heavier machines lack of slip injuries resulted. Sen one guy hand holding a vise drilling when the drill grabbed spinning the vise into the column with his fingers hand between column and vise . He had broken fingers and the vise was destroyed.
Please be careful when using machines they will bite and arnt forgiving