Bulletproof and Noise-Reducing Guards in Lightweight Design for Woodworking Machines

Abstract:

At present, guards on woodworking machine tools have to undergo an impact test with a 100 g projectile and an impact speed of 70 m/s to protect the operator against breaking tools. At the moment, only sheet metal housings and plastic elements of polycarbonate as well as particular safety curtain systems meet these requirements regarding the retention capacity of machine enclosures for woodworking centres according to EN 848-3. In context of this work, a machine enclosure made out of lightweight materials was developed as alternative to the conventional sheet metal housings. A solution for safety curtains that passes easy over the workpieces without damaging the edges was also worked out. With regard to rigid guards, many different kinds of material combinations were examined concerning retention capacity and acoustic behaviour. In addition to the experimental tests, a FEM model was developed representing the impact behaviour of the composite based. Finally, a lightweight enclosure prototype was designed and examined with regard to the retention capacity at critical spots and of sound emission.

• Periodical: Advanced Materials Research (Volume 907)
• Pages: 41-54
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.907.41
• Online since: April 2014
• Authors: Uwe Heisel*, Vincenzo Forcillo
• Keywords: Composite, Machine Tool, Safety, Simulation

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