Mill-turn machining is a machining method that combines turning and milling operations at the same time. It has the following characteristics:

1. Multiple processing functions: turning and milling combined processing can realize the functions of turning and milling at the same time. Through a single device, it can complete the processing requirements of parts of different shapes and sizes, reducing equipment investment and process flow.
2. Improve processing efficiency: Compared with turning and milling operations separately, turning and milling combined processing can complete multiple processing operations in one clamping, avoiding repeated positioning and clamping processes, thereby significantly improving processing efficiency.
3. Improve machining accuracy: Turn-milling combined machining can provide higher machining accuracy through precise tool path control and stable cutting conditions. At the same time, since the accumulation of dimensional error and positioning error is small, the cumulative error of parts can be reduced.
4. Realize complex contour processing: Turn-milling composite processing can realize complex contour processing, such as inclined surfaces, hemispherical surfaces, complex curves, etc. Through reasonable tool path planning and multi-axis control, a high degree of processing freedom can be achieved.
5. Reduce equipment investment and production costs: By adopting the turning-milling composite processing method, one equipment can be used instead of multiple equipment for processing operations, thereby reducing equipment investment and production costs. At the same time, manual operations and processing cycles are reduced, further reducing production costs.

It should be noted that turning-milling combined processing has high requirements for equipment and programming, and it is necessary to master the corresponding CNC programming and processing technology. Before implementing turn-milling, it is necessary to evaluate the processing requirements and equipment capabilities to ensure that the accuracy and surface quality requirements of the parts can be met.