How to prevent deformation of precision CNC machining sets of parts?

How to prevent the deformation of precision CNC machining sets of parts? Precision CNC machining will generally prevent the deformation of sleeve parts and make corresponding technological measures. The structural feature of sleeve parts is that the thickness of the hole is thin. Thin-walled sleeve parts are often clamped during processing. force. Deformation is caused by the influence of cutting force and thermal deformation. How to prevent it? The following points:

Precision parts processing

    1. Separate roughing and finishing to reduce the influence of cutting force and cutting heat, so that the deformation caused by roughing can be corrected in finishing.

    2. Reduce the influence of clamping force. Take the following measures in the process to reduce the influence of clamping force:

    (1) When precision CNC machining uses radial clamping, the clamping force should not be concentrated on a certain radial section of the workpiece, but should be distributed over a larger area to reduce the unit area of the workpiece. Clamping force. For example, the workpiece can be installed in an open ring of appropriate thickness and clamped together with this ring. Special jaws that increase the contact area can also be used. When positioning with holes, open mandrels should be used for clamping.

    (2) The location of the clamping force should be selected at the part with strong rigidity to improve the deformation of thin-walled parts under the action of the clamping force.

    (3) Change the direction of clamping force and change radial clamping to axial clamping.

    (4) Precise CNC machining produces rigid craft bosses or craft threads on the workpiece to reduce clamping deformation. During machining, special structure jaws are used for clamping, and the convex edge is cut off at the end of machining.