Scan-to-path workflow for additive repair of crankshafts without CAD using a 3D scanner in eye-in-hand configuration and robot-referenced point clouds

Repair and remanufacturing using robot-assisted material deposition is often limited by the absence of up-to-date CAD models of the parts to be repaired. This occurs, for example, in crankshafts that arrive with irregular wear, previous repairs, or variations between batches, and which also incorporate small lubrication holes that must not be obstructed by the added material.

This article presents an automated scan → reconstruct → reference → plan workflow that allows usable geometry to be generated directly from the actual part, in the state in which it is to be repaired.