How to avoid the deformation of aluminum alloy shell parts?

How to avoid the deformation of aluminum alloy shell parts?

Aluminum alloy is an important industrial raw material. However, due to its small hardness and large thermal contraction coefficient, it is easy to deform when Machining thin-walled and thin-plate parts. To prevent deformation, the performance of the tool can be improved and the internal stress of the data can be eliminated through early aging treatment, but from the perspective of Machining technology, the real technology is to minimize the Machining deformation of data. So how to avoid its deformation?

How to avoid the deformation of aluminum alloy shell parts?

For aluminum alloy parts with large machining allowance, to create better heat dissipation conditions and reduce thermal deformation, excessive heat concentration should be prevented as much as possible. This problem can be solved by symmetric treatment.


A 90mm thick aluminum alloy plate, needs to be milled to a thickness of 60mm. If one side is milled, flip it over and mill the other side immediately. Because each side is processed to a certain size at one time, if the allowance for continuous Machining is large, it will cause the problem of heat concentration.

For relatively small workpieces, the plane of the product should be flush with the workbench, and there should be no gaps when working on the reverse side. Then you can use the opposite side to solve the problem of deformation, or you can flatten the wool first, and then use the side as the bottom. Then use the other side as the front, so that the workpiece can be vertical and the workpiece will not be deformed too much.

For some thinner workpieces, it is reasonable to make side mount clamps. It is not possible to clamp a workpiece without force using bow clamps. It is best to flatten the workpiece with a right-angle iron, and then clamp the workpiece to the flat part of the right-angle iron with a bow clamp. In many cases, the deformation is caused by unreasonable clamping,

The flatness of the milled aluminum alloy plate can only reach 5mm. If the symmetrical Machining method of double-sided repeated feeding is adopted, each surface is processed at least twice until it reaches the final size, which is conducive to heat dissipation, and the flatness can be controlled at 0.3mm.

layered repetitive Machining

When the aluminum alloy plate to be processed has multiple cavities, if one cavity is processed in sequence, the cavity wall is easily deformed due to uneven force. A good Machining method is to adopt the method of layered and repeated Machining, that is, to stop Machining all the cavities at the same time, but not to complete the Machining at one time, but to divide it into several layers and process to the required size. In this way, the force on the part will be more uniform and the probability of deformation will be smaller.

Choosing the correct cutting parameters can effectively reduce the cutting force and cutting heat in the cutting process. During the machining process, the cutting amount is too large to cause the tool to go away.

It is said that reducing the number of back tools helps to ensure that the part does not deform, but it also reduces Machining efficiency. CNC high-speed milling can solve this problem. By increasing the speed of the machine tool and reducing the return stroke of the tool, the cutting force can be reduced to ensure Machining efficiency.

As a professional CNC Machining factory, AsianstarCNC has complete equipment and professional technology and has very rich experience in Machining parts deformation. If you want to know more about CNC Machining technology, please continue follow

Posted in Business News on February 12 at 08:25 AM

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