* Main characteristics of this machine tool * This machine tool is mainly used for grinding internal hole, internal end face, external end face, stepped hole of work piece; * Setting and adjustment of machine tool parameters adopt touch screen. Human-machine dialogue can be realized; * All the movable guide rails of machine tool adopt high-precision linear rolling guide rails which have good sliding performance. Screws for feed and reciprocating motion adopt high-precision ball screws; * The feed system and reciprocating system of machine tool adopt Siemens servo system for double-axis linkage control. * Grinding wheel spindle of machine tool adopt high-speed motorized spindle and is controlled by static frequency converter to realize stepless speed adjustment. * The machine tool can be equipped with fixtures such as three-jaw chuck,hydraulic chuck,diaphragm chuck, pneumatic chuck,etc. for user to select. * The machine tool adopt fully-closed shell with beautiful and elegant appearance.