I've no clue how an axis can expand. But then I've no idea what your question is intended to convey either.

The expansion of the universe is viewed as being the expansion of space-time itself. Nothing is moving ... the measured distance between objects not closely bound together by the strong, weak, and electromagnetic forces, and to some extent by gravity are increasing.

You can attribute this increase in distance to one of two equivalent causes:

1. The space between the objects is increasing
2. The speed of light is decreasing

Neither requires that anything move. Neither requires an axis.

I don't know your age but I'd sugget you hit amazon.com, look up books by Brian Greene, and if you can't find them at a local library ... purchase them.

DA Morgan