Analysis of Surface-Modified Clamping Elements for Improved Clamping of Deformation-Sensitive Workpieces with a Sensor-Integrated Fixture

In machining deformation-sensitive components, clamping force-related impairments can affect component quality. The reduction of clamping forces to prevent deformation often limits parameters, productivity, and may lead to workpiece detachment. This study addresses these challenges by enhancing friction forces through tailored surface modifications, incorporating specifically designed structures and diamond-like carbon (DLC) coatings on clamping elements. The modified surface topographies were analyzed, and a sensor-integrated clamping device was employed to assess the clamping potential. Retention forces were investigated by varying clamping forces and subjecting workpieces to impulse-like excitation. The results demonstrate the potential for increasing clamping performance, validated for difficult-to-clamp components.