718 工作機械用すべり案内面への固体潤滑材料の適用(工作機械の要素)(OS.1 生産加工・工作機械)

概要

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Sliding guideways have been conventionally applied to machine tool tables because of their high damping abilities. However, they have several problems such as stick-slip motion at low sliding velocities and the evolution of heat during high-speed operation. These problems are due to the high friction resistance between slider and rail. However, using so much lubricant oil will be against with today's activities regarding the protection of global environment. In response to these tendency, a special interest has been paid to the lubricant free sliding guideways. The purpose of this study is to develop the oil free type sliding guideways with using self-lubricating composite materials. The friction and wear characteristics of various composite materials were tested. A special test equipment was designed and developed in order to analyze the friction and wear characteristics under the practical condition. The frictional force, wear rate, surface roughness and temperature rise were measured during long distance friction test for each set of composite materials, and a design criteria for oil free sliding guideways was proposed.
2001-03-09