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

    Modern Technology Achieving High-Precision, High-Efficiency Processing for Machining Centers


    In recent years, demand for high-precision processing has also been increasing, in machining of relatively-long parts and dies used for automobiles, semiconductor manufacturing devices, electronic components, etc. The size range of these workpieces is positioned between machining centers and large machines. Looking at the entire industry, there are only a few machine tools that target such workpiece sizes, and therefore the demanded accuracy has not been fully met. Mitsubishi Heavy Industries, Ltd. (MHI) developed and markets the LH250, which is one of the largest machining centers realizing machining accuracy equal to that of micro milling machines. This time, MHI developed additional new optional functions that enable high-precision machining without significantly changing the factory environment.