Development of a clean table system for machine tools

滑轨的材料一般采用金属，并提供液态矿物油作为润滑剂。然而，这些结果在高速运行时，由于粘性摩擦的温度升高。此外，在高温、高真空和清洁度等极端环境条件下使用无油导轨的趋势越来越大，近年来人们对环境问题的兴趣也越来越大。本研究的目的是利用固体润滑剂开发机床无润滑剂滑动导轨。本研究在以下研究项目中进行：(1)固体润滑剂的研究趋势调查。(2)研制了一种提供平面接触条件的专用实验装置，以评估各种复合材料在实际机床工作台相同滑动条件下的摩擦学特性。(3)各种复合材料摩擦学特性的评价(4)气动半浮式接触机构的研制本文研究结果总结如下：(1)聚四氟乙烯添加的环氧合成树脂在摩擦特性上表现出优异的性能。(2)采用气动半浮式接触机构，复合材料具有较高的耐磨性能，满足实际使用。(3)环氧合成树脂中聚四氟乙烯（PTFE）的含量对滑道的摩擦磨损特性影响很大。

As the material for sliding guideways, metal is generally used and liquid mineral oil is supplied as the lubricant. However these result in the temperature rise during high-speed operations due to the viscous friction. Moreover, there are growing trends for oil-less guideways for uses in extreme environmental conditions such as high temperature, high vacuum and cleanliness as well as growing interests in the recent years in environmental issues. The purpose of this study is to develop lubricant-free sliding guideways for machine tools by applying solid lubricants. The study was carried out in following research items;(1) Investigation of the trend of the research of a solid lubricant.(2) Development of a special experimental device which provides a plane on plane contact condition in order toevaluate the tribological characteristics of various composite materials under the same sliding condition of practical machine tool tables.(3) Evaluation of the tribological characteristics of various composite materials(4) Development of a pneumatic half-floating contact mechanismThe result obtained in this study are summarized as follows;(1) PTFE added epoxy synthetic resin shows the excellent performances in the frictional characteristics..(2) By applying the pneumatic half-floating contact mechanism, the composite materials show high wear-resistance characteristics that can satisfy a practical use.(3) The content of PTFE in epoxy synthetic resin strongly influences on the friction and wear characteristics of slideways.