Vibration Reduction Module with Flexure Springs for Personal Tools

Authors: Donghyun Hwang, Soo-Hun Lee, Moon G. Lee

Abstract:

In the various working field, vibration may cause injurious to human body. Especially, in case of the vibration which is constantly and repeatedly transferred to the human. That gives serious physical problem, so called, Reynaud phenomenon. In this paper, we propose a vibration transmissibility reduction module with flexure mechanism for personal tools. At first, we select a target personal tool, grass cutter, and measure the level of vibration transmissibility on the hand. And then, we develop the concept design of the module that has stiffness for reduction the vibration transmissibility more than 20%, where the vibration transmissibility is measured with an accelerometer. In addition, the vibration reduction can be enhanced when the interior gap between inner and outer body is filled with silicone gel. This will be verified by the further experiment.

Keywords: Flexure spring, tool engineering, vibration damping.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1075050

References:

[1] K T Palmer, M J Griffin, H E Syddall, B Pannett, C Cooper, D Coggon, Raynaud-s phenomenon, "Vibration induced white finger, and difficulties in hearing", Occupational & Environmental Medicine, vol. 59 no. 9, pp. 640-642, 2002
[2] Singiresu S. Rao, Mechanical Vibration, 3rd ed. Addison-Wesley Publishing Company, New York, USA, 1995, pp. 228-242.
[3] DOW CORNING, Information About High Technology Silicone Materials, www.cowcorning.com.