工作機械摺動面を長期間メンテナンス・フリーにするグリース潤滑の開発

概要

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In the 21st century, as it is important to produce products with care for protecting the earth, a producer must be careful to conserve energy, save resources and reduce waste which pollutes environment. On the other hand, in case of a machine tool, much lubricating oil was used for smooth drive and positioning with high accuracy on the slide of most machine tools. The oil is wasted and scrapped in the natural world. This is large problem for protecting the earth. Therefore the grease lubrication with maintenance free for long term on the slide of a machine tool is developed and evaluated. The polymer (=Polyisobutylene PIB) was firstly added for high following property in the grease, then the optimum composition was decided for permanent lubrication. Then the W-rollers was developed for attracting the grease round the slider of the machine tool till the machine life. Lubrication property on the small machine tool using the W-rollers and the grease was evaluated in experiment. It is concluded from the results that; (1) Coefficient of friction regarding the grease with 3 % PIB was very small (<0.1) and its following property was very large, (2) W-rollers were very effective to attract the grease round the slider of the machine tool, (3) The slider using the permanet lubrication is moving with nice condition without maintenance, (4) The permanent lubrication was economical and eco-friendly.