Because it is difficult to machine the thin wall of CNC lathe, especially the inner hole, because the thin wall is affected by the cutting force in the cutting process, it is easy to produce deformation. This leads to the phenomenon of “waist shape” with small ellipse or middle and big two ends. In addition, due to the poor heat dissipation during the processing of thin-walled casing, it is very easy to produce thermal deformation, making the size and shape and position errors. How to reduce the influence of cutting force on workpiece deformation is an important problem to be solved if it can not meet the drawing requirements.
The machining of thin-walled parts in CNC lathe is a difficult problem in turning, because of the poor rigidity and strength of thin-walled parts, which are easy to deform in machining, increase the form and position error of parts, and not easy to guarantee the machining quality of parts. It can make full use of the characteristics of high machining accuracy and high production efficiency of CNC lathe, and fully consider the influence of process problems on the machining quality of parts. Therefore, it can effectively overcome the deformation in the machining process of thin-walled parts and ensure the machining accuracy by testing the square surface of workpiece clamping, tool geometric parameters, programming, etc, It provides a good basis and reference for better machining thin-walled parts in the future.
No matter what form CNC lathe uses to process parts, first of all, it must start from checking the part drawing. It can be seen from the figure that the thin-walled parts are easy to deform when they are processed. It is not only inconvenient to clamp here, but also difficult to process the parts to be processed. A special thin-walled casing and shaft guard need to be designed.
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