Mitsubishi Heavy Industries Technical Review
    Vol. 52 No. 3 (2015)   Machine Tools
    Technical Papers

    Microdrilling Technology using Short Pulsed-laser

    Kiyotaka Nakagawa,
    Tsugumaru Yamashita,
    Yoshihito Fujita,
    Haruhiko Niitani

    In recent years, laser machining is highly anticipated as a technology to replace machine processing and electrical discharge machining. The reason is because this type of non-contact machining involves no tool wear and can be applied to metals and a wide range of other materials including nonconductive crustaceous materials and resins. There is a great need for the application of short-pulse laser machining to various industrial fields, as well as types of parts processing since a finer and higher-quality machined surface is obtained. But efficiency and quality can hardly be reconciled, resulting in an obstacle to wide penetration. Mitsubishi Heavy Industries, Ltd. (MHI), having proved that one method of short-pulse laser machining significantly differs from another in machining ability, reports here examples of laser-applied micro drilling.