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What Kind of Milling Cutter is Used for Processing Aluminum Parts?

Source: Browse:31 The release date:2020.06.18 [ Large medium small ]

Aluminum parts are much better processed than steel or stainless steel. Basically, all people who do machining are the most favorite to process aluminum parts. The first processing of aluminum parts does not hurt the milling cutter, and the second part of the aluminum parts does not resemble steel parts. It has a thick oxide layer and is clean. As long as the CNC has no problem with the accuracy of the machine tool, the size will generally be relatively stable, and a high-speed tungsten steel milling cutter will do. There are many reasons for the deformation of aluminum parts, which are related to the material, part shape, and production conditions. There are mainly the following aspects: deformation caused by internal stress in the blank, deformation caused by cutting force and cutting heat, and deformation caused by clamping force. What are the geometric parameters of milling cutters for aluminum processing? The following CNC Machining Bike Parts Exporter will come to tell you.

 

Under the condition of maintaining the strength of the cutting edge, the rake angle is appropriately selected to be larger, on the one hand, it can sharpen the sharp cutting edge, and on the other hand, it can reduce the cutting deformation and smooth the chip removal, thereby reducing the cutting force and cutting temperature. Never use a negative rake angle tool; the rake angle has a direct impact on the flank wear and the quality of the machined surface. Cutting thickness is an important condition for selecting the relief angle. During rough milling, due to the large feed amount, heavy cutting load and large heat generation, good heat dissipation conditions of the tool are required, so the back angle should be selected smaller. During fine milling, sharp edges are required to reduce the friction between the flank and the machined surface and reduce elastic deformation. Therefore, the rake angle should be larger; helix angle: In order to smooth the milling and reduce the milling force, the helix angle should be as much as possible Choose a larger one; main declination angle: appropriately reducing the main declination angle can improve heat dissipation conditions and reduce the average temperature of the processing area.

 

During high-speed cutting, due to large machining allowances and intermittent cutting, vibration is often generated during the milling process, affecting machining accuracy and surface roughness. Therefore, the numerical control high-speed cutting machining process can generally be divided into: rough machining-semi-finishing machining-clear angle machining-finishing machining and other processes. For parts with high accuracy requirements, it is sometimes necessary to perform secondary semi-finishing and then finishing. After roughing, the parts can be naturally cooled, eliminating the internal stress caused by roughing and reducing deformation.


 CNC Machined Aluminum Parts


CNC Machined Aluminum Parts can cause sticking in aluminum processing, mainly because aluminum parts have lower yield strength and lower hardness than most steel and cast iron materials. Therefore, in the actual production process, the aluminum alloy's flexibility can cause some problems in machining: aluminum particles will adhere to the surface of the cutting tool, which will seriously affect the surface roughness of the workpiece, or form a "bond" on the tool. "Dust build-up, which will generate greater resistance, so it needs a higher cutting force to form obvious chip marks. Aluminum is highly extensible, and it may form long strip-shaped cracks. These cracks will block the cutting area, making the cutting process difficult, and at the same time, the cut debris is difficult to be carried away by the cutting fluid; the high thermal expansion coefficient of the aluminum alloy. In machining, the heat generated by deformation and friction can quickly spread to the workpiece, making it difficult to accurately control the size of the workpiece and requiring greater cutting forces.

 

The above is the milling cutter required by Brass Accessories CNC Turning Exporter for processing aluminum parts.