公开(公告)号：US11819902B2

公开(公告)日：2023-11-21

申请号：US17187265

申请日：2021-02-26

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Peter J. Davies ,  Peng Dai ,  Zhi Bin Li ,  Jing Jing Cai ,  Jian Wei Li

IPC: B21D39/20 ,  B21D39/16 ,  B21D41/02

CPC classification number: B21D39/20 ,  B21D39/16 ,  B21D41/028

Abstract: An expansion tool includes a housing, a collar rotatably coupled to the housing, a plurality of jaws coupled for co-rotation with the collar, a mandrel movable relative to the housing between a retracted position and an extended position to expand the jaws, and a drive mechanism including a rotatable cam. Rotation of the cam moves the mandrel between the retracted position and the extended position. The expansion tool further includes an indexing gear configured to incrementally receive torque from the drive mechanism such that continuous rotation of the drive mechanism incrementally rotates the indexing gear, and a clutch assembly including a clutch gear meshed with the indexing gear, a clutch cover surrounding the clutch gear, and a plurality of rolling elements disposed between the clutch gear and the clutch cover. The clutch cover is drivably coupled to the collar such that rotation of the clutch cover rotates the collar.