How to prevent deformation of sleeve parts during machining?

The most common problem of machining sleeve parts is deformation, which not only wastes financial and material resources, but also wastes our energy; Then, how to prevent sleeve parts from deformation? The following sub section makes a summary of the correlation to share with you:
A structural feature of sleeve parts is that the wall thickness of the hole is relatively thin, and the thin-walled sleeve parts are often deformed due to the influence of clamping force, cutting force and thermal deformation during the processing. Some process measures are often taken to prevent deformation:

1、 The rough and finish machining shall be carried out separately. In order to reduce the influence of cutting force and cutting heat, the deformation caused by rough machining shall be corrected in the finish machining.
2、 To reduce the impact of clamping force, the following measures shall be taken in process to reduce the impact of clamping force:
1. When adopting radial clamping, the clamping force should not be concentrated on a certain radial section of the workpiece, but should be distributed on a larger area to reduce the clamping force on the unit area of the workpiece. If the workpiece can be installed in an open ring of appropriate thickness, clamp it together with this ring. Special jaws with increased contact area can also be used. When positioning by holes,

open spindle clamping should be adopted.
2. The clamping force should be located at the part with strong rigidity to improve the deformation of thin-walled parts under the clamping force.
3. Change the direction of clamping force, and change the radial clamping to axial clamping.
4. A process boss or process thread with enhanced rigidity shall be made on the workpiece to reduce clamping deformation. Clamps with special structure shall be used during processing, and the convex edge shall be cut off at the end of processing.

3、 Reduce the influence of cutting force on deformation:
1. Increase the main deflection angle and main rake angle of the tool, so that the cutting edge is sharp and the radial cutting force is reduced.
2. Separate the rough machining from the finish machining, so that the deformation caused by the rough machining can be corrected in the finish machining, and adopt smaller cutting parameters.
3. The internal and external surfaces are processed at the same time to offset the cutting force.
4、 The heat treatment is arranged between rough machining and finish machining to reduce the influence of heat treatment deformation; After heat treatment, sleeve parts will generally have large deformation, which can be corrected during finishing, but attention should be paid to properly increase the margin of finishing.