The industries that 3+2 positioning machining and 5-axis simultaneous machining are applicable to are different. 5-axis simultaneous machining is suitable for curved surface machining, while 3+2 positioning machining is suitable for planar machining.

Advantages of 3+2 positioning machining:

Can use shorter, more rigid cutting tools.

The tool can form a certain angle with the surface, and the spindle head can extend lower and closer to the workpiece.

The tool travel distance is shorter, and the program code is less.

Limitations of 3+2 positioning machining:

3+2 positioning machining is often considered to be setting a constant angle for the main spindle. Complex workpieces may require many inclined views to cover the entire workpiece, but this will result in tool path overlap, thereby increasing machining time.

Advantages of 5-axis simultaneous machining:

No need for special fixtures during machining, reducing fixture costs, avoiding repeated clamping, and improving mold machining accuracy.

Reduce the number of fixtures used.

Many special tools are eliminated during machining, thereby reducing tool costs.

Increase the effective cutting edge length of the tool during machining, reduce cutting force, improve tool life, and reduce costs.

Limitations of 5-axis simultaneous machining:

The spindle rigidity is slightly worse than 3+2 positioning.

In some cases, the five-axis scheme is not suitable, such as when the tool is too short or the tool holder is too large, and vibration cannot be avoided in any inclined angle condition.

The machining accuracy error is larger than that of a 3-axis machine tool.