水中マイクを用いた研削砥石自動接近システムの開発 : システムの信頼性向上(機械要素,潤滑,工作,生産管理など)

概要

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The authors previously developed an automatic wheel-approach system for a surface grinding machine using a hydrophone, which is installed in a coolant-supply nozzle. However the system was not reliable enough for an actual use because the coolant-flow in the nozzle is not stable and S/N ratio of the detected signal was not enough. Moreover the system could be applied only for a porous wheel. Then, a fluid-flow regulator and new fluid-supply nozzles are developed to enhance the S/N ratio and effects of the devices on the system reliability are experimentally investigated. The nozzle with a bill elongated by 40mm and nozzle-exit clearance diminished to 0.5mm showed an excellent performance in S/N ratio. An automatic approach of a porous-wheel from 5mm-clearance between the wheel and a workpiece, Ay, has been successfully performed. The wheel can be positioned as accurate as ⊿y=15-40μm in 4-8sec. The system can also be used for conventional and superabrasive wheels. Effects of wheel and workpiece widths on the system reliability are clarified.
社団法人日本機械学会の論文
2006-11-25