Reduced processing accuracy

1. Positioning error: If the material (such as plates, bars) is bent or twisted, it is difficult to ensure that the reference surface is parallel to the machine tool coordinate axis during clamping, resulting in deviations between the size and shape after processing and the design drawings.

2. Cutting force deformation: Unstraight materials may be further deformed due to uneven force during the cutting process, especially in the processing of thin-walled or slender parts, exacerbating dimensional deviations (such as cylindricality and straightness deviations)