Abstract
Since it is correspondent to environmental problems such as global warming, discharge of the emission, consumption of the energy, use of chemical substance, the cutting fluid-less processing has been exposed to the attention. As substitution processing of the cutting fluid, there is the cold-air jet processing. In the cold-air jet processing, it is important to efficiently supply the processing point with the low-temperature compressed air. In this study, vacuum insulated pipe with high thermal insulation performance has been installed in machine tool. The insulative property of vacuum insulated pipe has been clarified. It has been confirmed that there is almost no temperature loss, when it installs the vacuum insulated pipe in the spindle of machining center, and when it supplies the cold-air jet, and that it can supply the processing point with the cold-air jet. And, it has been confirmed that the machine tool dose not receive temperature effects by cold-air jet.
