2. Precautions for clamping thin-walled aluminum profiles. Thin-walled aluminum profiles are easy to deform, so special attention should be paid to deep processing, and the clamping should not be too tight or too loose. When the machining is almost finished, loosen the fixture slightly, let the workpiece recover its shape, and then press it gently. This is a great test of the level of workers.
3. Choose the appropriate symmetrical machining. For parts with large machining allowance, you can choose symmetrical machining to better process heat dissipation.
4. Multi-cavity workpieces can be processed in layers for many times. If multiple cavities are machined one by one in sequence, the workpiece will be deformed due to uneven stress. Multi-layer processing is adopted, and each layer is processed into each cavity. This machining deformation can be greatly reduced.
5. Change cutting parameters to reduce cutting force and cutting heat. If the machining allowance is too large, the cutting force will not only deform the aluminum profile as much as possible, but also reduce the rigidity of the main shaft of the equipment and the service life of the tool. High-speed milling can overcome this problem in NC machining. As long as the amount of back cutting is reduced, the feed rate is correspondingly increased and the speed of the machine tool is increased, the cutting force can be reduced and the machining efficiency can be guaranteed.
6. When processing aluminum profiles with cavities, pay attention to the chip space of the milling cutter. If the milling cutter cuts directly, it may lead to insufficient chip space, which may lead to overheating, expansion, knife collapse and broken knife of aluminum profile parts. First, drill holes with a drill bit of the same size or one size larger than the milling cutter, and then use the milling cutter to mill.