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Do you know the reason for the deformation of CNC machining parts? Next, the Xiehe cnc processing factory will tell you.

In the process of CNC machining, deformation of workpieces is very common. If the accuracy is not enough, secondary processing can be carried out, but the deformation of the processed parts must be returned to the furnace for remanufacturing. The deformation of the processed parts is a difficult problem to solve. A good solution is to eliminate the deformation of the CNC processed parts from the root. Let's take a look at the reasons for the deformation of CNC machining parts.

1. The influence of the material and structure of the workpiece on the deformation of the workpiece

The size of the deformation and the complexity of the shape, length, width and wall thickness are proportional to the rigidity and stability of the material. Generally, when designing parts, it is necessary to reduce the influence of these factors on the deformation of the workpiece. Especially in the structure of some larger parts, the structure needs to be reasonable. In the process of machining, it is necessary to control the defects such as hardness and porosity of the blank to ensure the quality of the blank and reduce the deformation of the workpiece.

2. Deformation caused by workpiece clamping

When the workpiece is clamped, it is necessary to select the correct clamping point and select the appropriate clamping force at this position. Therefore, it is necessary to keep the clamping point consistent with the support point, so that the clamping force acts on the support, the clamping point should be as close as possible to the processing surface, and the position where the force is not easy to cause clamping deformation should be selected.

3. Deformation formed during workpiece processing

During the cutting process, due to the effect of the cutting force, the workpiece will undergo elastic deformation in the direction of the force, which is the phenomenon of tool giving. For similar deformation, corresponding methods can be adopted on the tool. The tool is required to be sharp during finishing, so that on the one hand, it can reduce the resistance caused by the friction between the tool and the workpiece; ability, and then reduce the residual internal stress on the workpiece.