Bieber's Ex -- 3 Years of Protection from Machete-Wielding Man

The machete-wielding man who threatened to rape and kill Justin Bieber's ex-girlfriend Jasmine Villegas has been ordered to stay the hell away from her for the next three years ... TMZ has learned.

17-year-old Villegas -- who starred in Bieber's "Baby" video -- had already obtained a temporary restraining order against Steven Cintron after he posted several alarming YouTube videos, containing numerous violent threats.

Now, an L.A. Superior Court judge has extended the order -- requiring Cintron to stay at least 100 yards away from Villegas for the next three years. Cintron is also banned from posting any more videos about Villegas.