ABSTRACT
In this study physical and physiological indicators were measured to define the level of hardness engendered by the action of deburring cast-iron parts with a vibrating tool. The measurements include: the forces applied to the tool, the muscular bioelectric activities (EMG) and the biomechanical parameters of the articular angulations. We also carried out these measurements on a simulated workstation in the laboratory environment. (Pre-study). The results show that the muscular forces used in working with the tool are high, considering the static character of the action. The risk ofMSD is, according to the standard NF EN 10053, almost 4 times as high as the acceptable risk. The results of the measures of bioelectric activity of muscles engaged during the work with the tool also confirm an excessive effort. The repetitiveness of the task of deburring constitutes a very important risk factor. The calculated OCRA index is 6 times over the limit of
Keywords: physical workload, EMG, vibrating tools, forces measurement
To refine the knowledge of hardness engendered by the action of deburring castiron parts with a vibrating tool, we realized in the laboratmy physical and
The realized measurements concerned:
the forces applied to the tool,
the muscular bioelectric activities (EMG), the biomcchanical parameters of the articular angulations.
