For parts with light weight, poor rigidity and weak strength, they are easily deformed by force and heat during processing, and the high scrap rate leads to a significant increase in costs.
For such parts, we must first understand the reasons for deformation:
Deformation due to stress:
This type of parts has thin walls. Under the action of clamping force, it is easy for the thickness to vary during machining and cutting. The elasticity is poor, and the shape of the parts is difficult to recover by itself.
Thermal deformation:
The workpiece is thin and light, and the radial force during cutting will cause thermal deformation of the workpiece, resulting in inaccurate dimensions.
Vibration deformation:
Parts are prone to vibration and deformation under the action of radial cutting force, which affects the dimensional accuracy, shape, position accuracy and surface roughness of the workpiece.
Processing methods for easily deformed parts:
For easily deformed parts, such as thin-walled parts, high-speed machining with small feed rate and high cutting speed can be used to reduce the cutting force on the workpiece during machining. At the same time, most of the cutting heat is taken away by the chips flying away from the workpiece at high speed, thereby reducing the workpiece temperature and thermal deformation.
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