The Wolves claimed Hamilton off waivers Thursday. The 24-year-old Hamilton appeared in 24 games for the Miami Heat this season, averaging 2.8 points and 2.0 rebounds.
Hamilton was traded to New Orleans on Feb. 19 but did not appear in a game for the Pelicans. He was waived Tuesday.
With starting center Nikola Pekovic struggling with a sore right ankle, the Wolves needed some depth in the front court.
Robinson was a second-round draft pick this season. But he played only sparingly while being caught in a log jam on the wing behind Andrew Wiggins, Kevin Martin, Shabazz Muhammad, Gary Neal and Chase Budinger.