cnc engraving machine QT5620 conductor,semiconductor cut: graphite,epoxy board,carbide,stone,etc. TM ISO9001:2008 Main Technical DataTypeQT5620Worktable Tavel(mm ... and parts composed by linear lines and circular arc.The machine tool is composed of bed, coordinate worktable, abrasive ... , lubrication system, illumination and other parts. 1. BedThe machine tool is the cast iron box.Its upper part takes ...