The invention discloses a combined
cutting tool for
processing a finned tube. The combined
cutting tool comprises a spindle (8), a transition blade (1), a design-finalized blade (3), a transition
gasket (2) clamped in the middle of the transition blade, a design-finalized
gasket (5) clamped in the design-finalized blade, a positioning
gasket (4) clamped between the transition blade and the design-finalized blade, a gasket (6) and a nut (7), wherein the transition blade (1) and the design-finalized blade (3) are fixedly sleeved on the spindle (8), and the gasket (6) and the nut (7) are used for locking and fixing the blades. The combined
cutting tool is characterized in that the transition blade (1) is kept to be invariant, the thickness of the design-finalized blade (3) is larger than that of the transition blade (1), the thickness of a fin is reduced through combining different cutting tools and gaskets, and accordingly the purpose of reducing the weight per unit length of the fin is achieved. The combined
cutting tool for
processing the finned tube has the advantages that the fin thickness is reduced, the weight per unit length of the fin reduced, and the cost is saved; the
fin height and the fin shape before the fin design is finalized are ensured; the stability in the
processing process is high; the die replacement time is reduced, and the work efficiency is improved; the gaskets can be used repeatedly; a
cutting tool combining and arranging mode is simple, the
cutting tool cost is low, and the blade using time is long.