Numerical control five axis machining is an advanced machining technology that can accurately process complex geometric shapes, especially free-form surfaces. This machining method mainly relies on a five axis machining center, which can be positioned and connected in five degrees of freedom, including three moving axes (x, y, z) and two rotating axes. Specifically, CNC five axis machining has the following advantages: 1, improved machining efficiency: As five axis machining can complete the machining of multiple surfaces in one clamping, it reduces the number of clamping times and auxiliary time, and improves machining efficiency. 2. Reduce machining difficulty: For complex surfaces and cavities that are difficult to complete with three-axis machining, five axis machining can be easily accomplished. 3. Improve machining accuracy: Five axis machining has high positioning accuracy, which can ensure the geometric shape accuracy and surface roughness of the machining. 4. Widely applicable: Five axis machining can be applied to various industries, such as aviation, aerospace, automotive, molds, etc.