What are the advantages of CNC processing parts have

CNC machining is the computer according to the appearance structure and material characteristics on the product drawings, design CNC program, through the fine CNC machine tool milling to meet the size requirements of the drawing parts. 

But the surface obtained by CNC milling is not the final appearance of the product.During milling, the surface is under extrusion molding and grinding, which will produce plastic deformation and change the appearance surface of the workpiece.The final product appearance surface will also need to be obtained by CNC grinding and processing.Before grinding, evaluate the appearance quality of the workpiece, and select the appropriate grinding processing process.There are generally five aspects to assessing the external quality of the work piece.