Corner Cleaning Machine is used for cleaning the window corner after welding. CNC corner cleaning machine has totally 5 cutters (two pieces of vertical milling cutters, two pieces of pulling cutters, one piece of saw blade) will be automatically cleaning surface, vertical and inside rubber gasket groove. No need tool change. Can be linked with horizontal welding machine to become welding & corner cleaning production line for grand imagine and high efficiency. The V corner cleaning machine is used to clean V-notch welding seam of PVC window and door. Cleaning cutters could be adjusted according to the profile height without manual adjustment. Reduce the labor intensity.