When engraving machines are used to engrave non-metallic materials such as extruded acrylic sheets or cast acrylic sheets, they usually have sticky knives. The main reason is that the cutting heat is large, which causes the cutting edges of the material to melt. The usual solutions are:
(1) Replace sharp tools: sharp tools can reduce cutting heat;
(2) Reduce the spindle speed: Decreasing the spindle speed reduces the cutting line speed, thus reducing the heat of cutting. Can avoid material melting;
(3) Increase the feed rate: the feed speed is increased, and the time for the tool to stay in one position is reduced, so that the heat of cutting per unit volume of material is reduced, and the melting of the material is avoided.
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