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Precautions for CNC machining of aluminum alloy cavity

The CNC machining center is mainly used for the processing of key parts such as mold cores, inserts and copper molds. The quality of the mold core and inserts directly determines the quality of the molded part of the mold. Where should we pay attention to CNC machining aluminum alloy cavity in normal production?
The CNC machining center is mainly used for the processing of key parts such as mold cores, inserts and copper molds. The quality of the mold core and inserts directly determines the quality of the molded part of the mold. Where should we pay attention to CNC machining aluminum alloy cavity in normal production?

Aluminum alloy CNC machining cavity

1. Precautions for front mold processing

① Tool path sequence: large knife surface grooving tool path is rough, small knife contour contour tool path is rough, big knife (ball knife) parallel milling tool path light knife small knife parallel milling tool path light knife. The front mold is usually equipped with a matching copper male, mainly with a rough knife path, supplemented by a local curved light knife.
②It has a parting surface and a pillow surface. When adding together, the parting surface pillow surface is processed in place without leaving a margin, and the cavity part has a margin of 0.2-0.5 to make sparks. If there is only a young male, leave a margin of 0.3. If there are both young and old males, a margin of 0.5 can be left. The front die touches the penetrating position and the rubbing position can leave a margin of 0.1, which is used to match the front and rear molds.
③ Use a large-diameter round-nosed knife (knife handle) when opening. If the diameter of the tool is too small, it is easy to break the knife and spring the knife. Try to use it in the middle knife.
④The tool path range in curved surface machining is calculated based on the movement path of the tool center axis, that is, the actual machining area is one tool radius larger than the single side of the selected tool path range limit box, and the tool path range limit box parameters should be set reasonably. Avoid processing beyond the actual aluminum machining needs.
⑤The material of the front mold is hard, so check carefully before processing to reduce errors and cannot be easily welded!

2. Precautions for rear mold processing

① Rear die tool path sequence: large knife surface grooving tool path is rough, small knife limit range surface grooving roughing, angle clearing, large knife (ball knife) parallel milling tool path smooth, small knife (ball knife) parallel milling tool path limitation Range of angle-clearing, smooth knife, flat knife and other high-profile toolpaths.
②The material of the rear mold is the same as that of the front mold. Use a round nose knife (knife handle) as much as possible.

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