Firstly, the material of the workpiece should be considered. Different materials of workpieces require different milling methods. For materials with high hardness and brittleness, the top feed method can be chosen for milling, which can reduce thermal deformation of the workpiece surface and vibration during the cutting process. For soft materials or materials that are prone to deformation, side feed milling can be chosen to improve machining efficiency and surface quality.

Secondly, the shape and size of the workpiece should be considered. For workpieces with complex shapes and large dimensions, CNC milling machines can be chosen for processing. The motion trajectory of the milling tool can be controlled through CNC programs to achieve high-precision and high-efficiency machining. For small-sized workpieces, manual milling machines can be chosen for processing, which have high flexibility and are suitable for small batch production.

Once again, it is necessary to consider the precision and surface quality requirements of the machining. Different processing methods can have an impact on machining accuracy and surface quality. In the pursuit of precision and surface quality, advanced milling techniques such as high-speed cutting and dry cutting can be chosen to improve machining accuracy and surface quality. For workpieces with general requirements, conventional cutting methods can be chosen for processing.

Afterwards, it is necessary to consider processing efficiency and cost. Different milling machine processing methods may have certain differences in processing efficiency and cost. Generally speaking, using CNC milling machines for processing can improve processing efficiency and reduce labor costs. However, the cost of purchasing and maintaining CNC equipment is relatively high. Therefore, when choosing the milling machine processing method, it is necessary to comprehensively consider factors such as processing efficiency, cost, and workpiece quality, and choose according to specific processing requirements.

In general, selecting a suitable milling machine processing method requires comprehensive consideration of factors such as material, shape, size, accuracy, surface quality, efficiency, and cost. Reasonable selection should be made based on specific circumstances in order to achieve efficient and high-quality processing.