B29 Thermal Behavior and Chip Formation on Rotary Cutting of Difficult-to-cut Materials Utilizing Multi Tasking Lathe and MQL(Advanced machining technology)

抄録

To achieve high speed rotary cutting of high hardness super alloys, influences of tool peripheral speed, tool diameter, and tool inclination angle on thermal behavior and adhesions are investigated. Additionally MQL's cooling and lubricating effects are verified. Rotary cutting tests of Inconel718 of HRC45, are carried out using coated carbide tools at up to 500 m/min of surface speed. By employing a larger diameter tool and selecting an appropriate tool peripheral speed so as to reduce the tool-workpiece contact time and frictions, tool temperatures and failures are suppressed. Adhesions are also reduced utilizing the tool inclination angle control and MQL.