Gantry milling processing and milling fill the gap that carving milling machine can’t process large-scale mold in the current market. The machine has the advantages of average transmission, high rigidity, heavy body and large processing size, which can meet the requirements of carving and milling of most large molds in the market at present.
The tool path of gantry milling must be in accordance with the following strategies:
1. High speed machining should be based on down milling to reduce tool wear and improve machining accuracy.
According to the principle of shallow cutting and small layer depth, the correct layering route is selected to complete the correct intelligence of machining and the stability of load.
3 arc cutting should be added at the corner to prevent the sudden change of velocity vector target and the sharp change of tool load.
4 in the plane two-way cutting, it is possible to add arc transition between two adjacent tool paths, so as to make the tool move smoothly laterally. In the process of two-way cutting in space, it is advisable to select several extended transition modes, such as space circular arc cutter, space inner circular arc cutter, space outer circular arc cutter and “Golf” type transition cutter, which not only ensures the smoothness of cutter path, but also effectively prevents the phenomenon of turning and hard bending between two lines. This transition mode is widely used in high-speed milling of various curved surfaces.
5 to prevent the normal direction direct feed and retreat on the appearance, the spiral, arc and diagonal mode should be selected to ensure smooth feed and retreat.
In order to prevent the sharp change of the cutting load, the different ways are used to separate the steep wall and the non steep wall, which can increase the cutting speed and average the surface roughness of the parts.
Gantry milling processing conditions:
● prevent sharp changes in tool movement.
● prevent feeding and withdrawing on the appearance. Sink directly to the next depth in appearance milling. If it can’t sink directly, it can sink through spiral or slope.
● the infeed (Fz) of each tooth shall be equal to (AE).
● real cutting roughness milling is selected for gantry milling – the step distance is calculated by the roughness of the tool.
● the best surface machining quality can be achieved when the feed rate of each tooth is constant.
Do you understand the above Longmen milling content? If you have any other questions, please call us for consultation. We will sincerely serve for you
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