MONITORING OF VIBRATION OF MACHINES WITH AN ELASTIC SUPPORT

Many production machines, when running, are the source of broad-band n oise and vibrations. One possible way of removing these unfavourable i nfluences on the environment, and especially on human beings, is elast ic base. Here, elastic elements are inserted between the frame of mach ine and the floor. Under these conditions, the transmission of vibrati on transferred to the floor declines, along with the level of noise. T he dynamic characteristics of a machine placed on an elastic base diff er somewhat from those of a machine fixed to the floor with a usual fi rm support. Therefore, the design of an elastic base has to be resolve d with respect to the running ability of the machine and to providing a minimum additional load on the parts resulting from the vibration on the elastic base. By measuring vibrations and establishing the operat ional deflection shapes, it is possible to verify the correctness of e lastic base design or to identify the weak spots in the construction; and to make corrections in the elastic base design or in the construct ion of the machine itself.