It is newly invented based on the experience of drum type grooving machine. This machine have function of automatic grooving (V groove, U groove ) + 4 corners die-cutting (remove corners). The corners die cutting by servo knife automatically, the cutting accuracy is ≤ 2mm. The grooving accuracy is ±0.1mm. The corner cutting function can be close when you no need it . So it suitable for processing various models of rigid boxes and cover cases.