In deep-hole drilling, small-diameter holes of less than 1 mm are machined using carbide gun drills, whereas holes of 15 mm and above are typically drilled using welded-edge drills, and holes of 25 mm and above are drilled efficiently using indexable-insert drills.

车铣复合数控机床是指既能够完成车工又能完成铣工的机床，既能当车床又当铣床。车铣复合机最早用于加工螺旋桨，主要是为避免2次装夹所带来的精度丢失及基准丢失等！

CNC machining in the tool selection and cutting amount of determination of tool selection and cutting amount of determination of CNC machining 360 Q&A process in the important content, it not only affects the processing efficiency of CNC machine tools, but also has a direct impact on the quality of machining. the development of CAD / CAM technology

As the manufacturing sector in the Zhangzhou region has developed, combined turning and milling technology has gradually emerged as a key process in the field of mechanical engineering. By integrating turning and milling functions, this method enables multiple operations to be carried out on a single machine, offering new solutions for component manufacturing.

核心优势：将车床的旋转主轴（工件主轴）与铣床的旋转刀具主轴（动力刀塔/电主轴）集成于一体。 通常具备X、Z、C轴（工件主轴定向），高d机型增加Y轴（横向移动）和B轴（刀架摆动）

What is 3+2 axis CNC machining? Both vertical and horizontal milling machines are capable of three machining axes as standard. However, a rotary table and tilting swivel trunnions have been fitted to provide rotary movement along the other two axes. Basically, this is a 3+2 axis machining process.

After all, compared to five-axis machining centres, three-axis machines have only three linear axes (X, Y and Z); their structure is simple, the tool axis does not change direction during machining, their range of motion is limited, and programming is relatively straightforward; whereas five-axis machining centres, on the face of it,

In recent years, five-axis CNC machining centres have made a big splash in the machining field, winning over many manufacturers with their high efficiency and quality features. Five-axis machine tools, that is, on the basis of the traditional X, Y, Z three linear moving axes, add two rotary axes

Furthermore, the widespread use of monolithic thin-walled structures and difficult-to-machine materials means that manufacturing processes are frequently hampered by bottlenecks such as long lead times, high material removal rates, low machining efficiency and significant machining deformation. In order to improve the machining efficiency and accuracy of complex aerospace components

The emergence of mill-turn machining equipment provides an effective solution for improving the machining accuracy and efficiency of aerospace parts. With the continuous development of CNC technology, computer technology, machine tool technology and machining process technology