The design optimisation of the self-locking moving device using CAD software

In the paper results of the design optimisation process for the self-locking moving device using CAD software are shown. As the object of the design optimisation the plier barrier subassembly was selected. The decision about selecting of the plier barrier subassembly as the optimisation object was made taking into account its importance for the device operating and safety. The optimisation process was carried out in Autodesk Inventor software. As a result, a new modified design of the plier barrier was developed. The design was next used for manufacturing of the self-locking moving device prototype. The prototype device was subjected to load mechanical tests in order to check its mechanical strength and the plier barrier clamping force effectiveness. The results of the mechanical tests in the content of the paper are presented in whole. The carried out experiments proved the device correctness of operation. Having these done, the self-locking moving device data sheet was prepared. Taking into account fact that according to The Machinery Directive, Directive 2006/42/EC the self-locking moving device is a machine, it was necessary to perform technical risk assessment. Summarizing up, thanks to performed design optimisation, it was possible to raise the safety level of the device operation, increase the device moving speed and to decrease the overall production costs by simplifying the device design.