How to control the flatness within 0.01 in aluminum sheet processing?

 Q: The aluminum plate processing is easy to deform, but the good clamping process can minimize the deformation. How do you handle the aluminum plate? The outer shape is 400*500.The flatness is 0.01.

answer:

basic condition:

The machine tool has a good verticality between the Z axis and the XY axis, otherwise it will be nothing to do.

Clamping:

To reduce the deformation to a smaller extent, it is required to have a high plane uniformity on the bottom positioning surface; try to use a clamping device with a small clamping force – in the case where the required yield is very high and the output is not high, AB can be selected. Glue or glue such as 502 is bonded. At the same time, it needs to match the small depth of cut and high-feeding small-diameter cutter to reduce the cutting force. The process requires repeated processing on the front and back. In the case of high output and high processing efficiency, the clamp is clamped back and forth, and the clamping force is successively reduced by using a jig with a small clamping force such as multiple processes and aerodynamics, based on the empirically estimated deformation amount. Processing until the requirements are met.

Tool:

The face milling cutter selects a milling cutter with a small cutting resistance and can adjust the height of the blade, and a diamond blade is used to prevent burrs.

Side profile milling is more selective, and sharp small diameter milling cutters with less cutting resistance are preferred.

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