Kaminsky grabbed six rebounds for the Badgers (17-3, 4-3 Big Ten), who snapped a three-game losing streak.
Sam Dekker had 15 points and seven rebounds and Traevon Jackson scored 15 points.
Ben Brust added 11 and John Gasser contributed 10 with seven rebounds as Wisconsin limited the Boilermakers to 35.4 percent shooting from the field.
Terone Johnson and Bryson Scott each scored 10 points to pace Purdue (13-7, 3-4).
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