| Abstrakt: |
Vibration is the crucial factor that adversely affects the machining accuracy and surface topography generated on the workpiece. The primary source behind the residual vibrations instigated in the machine tool is the rocking movement of the entire machine over its foundation. The conventional static foundation provides a constant response to all kinds of impacts and vibrations. Therefore, this work aims to develop a semi-active electrorheological fluid (ERF) machine mount capable of activating varying responses per quality needs. The proposed system also facilitates mounting a machine tool replacing conventional static foundations and helps attenuate the residual vibrations and the vibrations instigated due to impact loads. The process was initiated with the design and manufacturing of the ERF machine mount, which is then exposed against impact load during experimentation. The drop column technique analyzes the developed system's dynamic response against impact load. The dynamic response of the ERF machine mount is investigated about amplitude, the duration of the impulse, applied electrical potential, and impact load. The experimentation was conducted with variable parameters, including machine mount with and without ER fluid, applied electrical potential across poles (0 kV, 2.5 kV, 5 kV), release height of drop column facility (0.02, 0.04, 0.06, 0.08, 0.1, and 0.12 m) and load applied on drop column facility (4.25 kg and 6.25 kg). The results authorize that ERF machine mounts are 40 % more effective against the impact loads and instigated vibrations due to impact load than a conventional system. [ABSTRACT FROM AUTHOR] |
