Precautions during cutting

Choose the right cutting tools: For the cutting of industrial aluminum profiles, cutting tools designed specifically for aluminum materials should be selected, such as high-speed steel saw blades or cemented carbide saw blades. The sharp edge of these tools can reduce the extrusion and friction on the surface of the profile when cutting. For example, the use of a saw blade with a large number of teeth and a tooth shape suitable for aluminum processing can make the cutting surface smoother, avoid excessive burr and tearing, and thus prevent the strength of the profile from being affected.

Control cutting parameters: When cutting, it is necessary to reasonably control the cutting speed and feed. Too fast cutting speed may cause the surface of the profile to overheat, so that the microstructure of the aluminum profile changes, and then affect its mechanical properties. According to the thickness of the profile and the performance of the cutting tool, the cutting speed is controlled in a suitable range. At the same time, the feed amount can not be too large, otherwise it will increase the cutting resistance, resulting in surface damage and dimensional accuracy decline.

Cooling measures: Because aluminum profiles are easy to generate heat during the cutting process, effective cooling measures need to be taken. Coolant can usually be used for cooling, which not only can the temperature of the cutting area, but also can wash away the chips generated during the cutting process and prevent the chips from causing scratches to the profile surface.

Points to note during drilling

Bit selection and sharpening: Choosing the right bit is important for protecting the performance of aluminum profiles. A bit with a smaller top Angle and a larger spiral Angle should be selected, so that it is easier to cut into the aluminum profile when drilling and reduce the axial force. At the same time, the cutting edge of the drill should be kept sharp and the edge should be sharpened regularly to avoid excessive heat and extrusion pressure when the dull drill is drilling. For example, when drilling a deep hole, a sharp drill can reduce the accumulation of aluminum chips in the hole, drilling resistance, and prevent the deformation of the profile due to excessive local forces.

Drilling speed and feed control: As with cutting, the drilling process should also control the speed and feed. The high drilling speed will cause the friction heat between the drill bit and the profile to increase sharply, which may lead to a decrease in the hardness of the aluminum profile or a hot crack. Appropriate drilling speed, and adjust the feed rate according to the drill diameter and profile material, so that the drilling process is smooth and reduce the damage to the internal structure of the profile.

Chip removal treatment: aluminum chips will be produced when drilling aluminum profiles, to ensure that aluminum chips can be discharged in time. If aluminum chips accumulate in the hole, it will increase the friction and wear of the drill bit, and may also deteriorate the surface quality of the hole wall. A suitable chip removal method can be used, such as using compressed air to blow chips or a drill with an internal cold hole.

Protective measures during milling

Tool selection and tool path planning: When milling industrial aluminum profiles, it is necessary to select the appropriate milling cutter. End milling cutter is a more commonly used tool, and its cutting edge shape and material should be selected according to the specific situation of aluminum profiles. At the same time, reasonable planning of the tool path can reduce the repeated cutting of the profile, and the influence of cutting force on the performance of the profile. For example, using the down-milling method, the rotation direction of the milling cutter is the same as the feed direction of the workpiece, which can make the cutting force more stable and reduce the vibration and deformation of the profile.

Optimization of cutting parameters: Optimization of milling parameters, including cutting speed, feed speed and depth of cut. Because the texture of the aluminum profile is relatively soft, the cutting speed can be appropriately improved, but care should also be taken to avoid generating too much heat. The feed speed should be moderate to ensure the smoothness of the cutting process. The setting of the cutting depth should consider the thickness and strength of the profile to avoid damaging the profile with too much cutting depth.

Machining allowance control: When milling, it is necessary to reasonably control the machining allowance. Excessive processing allowance will increase the milling workload and cutting force on the profile, which may lead to a decline in the profile surface quality and performance damage. Through accurate process design and size calculation, to determine the appropriate processing allowance, not only to ensure the dimensional accuracy of the profile processing, but also to greatly reduce the impact on the performance of the profile.