Boring fixture for cross holes on differential case

The utility model discloses a boring fixture for cross holes on a differential case. The boring fixture comprises a fixture body provided with a positioning ring and a pressure plate. The positioning ring is detachably connected with the fixture body, and the pressure plate is an L-shaped hooked pressure plate and detachably connected with the fixture body. The boring fixture is short in replacement and adjustment time, and the improved fixture structure is a quick change fixture, by which boring procedures of cross holes on various types of differential cases on one machine tool are achieved.