The deformation of aluminum milling alloy structural parts
Aluminum milling alloy structural parts are easy to deform under the action of cutting force due to low rigidity, large milling allowance and poor machining process. In addition, the residual stress in the workpiece has a great impact on the strength, fatigue life, stress corrosion resistance and structural dimension stability of the workpiece。At the same time, cutting force, cutting heat, mechanical vibration and other factors will also lead to workpiece deformation. Generally speaking, the factors that lead to the deformation of aluminum alloy structural parts in the process of machining can be divided into the following categories:① the influence of material itself; ② the thermo mechanical coupling effect between tool and workpiece in the process of cutting; ③ workpiece clamping mode; ④ initial residual stress, etc. After milling as shown in Figure 1, after clamping release, the parts with residual stress release during machining are prone to obvious warping deformation
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