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.
