Experienced CNC processing masters all know that CNC processing needs to be carried out in stages, so what is the significance of doing so? The main points are as follows:
(1) Rational use of CNC processing equipment
With large rough machining allowance and large cutting amount, the machine tool with high power, good rigidity, high efficiency and low precision can be used. High precision machine tool is used because of small cutting force and small damage to machine tool. This gives full play to the respective characteristics of the equipment, which can not only improve productivity, but also extend the use of precision equipment.
(2) It is convenient to find the defects of CNC blank in time
All kinds of defects (such as porosity, sand inclusion and insufficient allowance) of the blank can be found after rough machining, which is convenient for timely repair or scrapping, so as to avoid unnecessary waste caused by continuous machining.
(3) Easy to arrange heat treatment process
After rough machining, stress relief heat treatment is usually arranged to eliminate internal stress. Before finishing, quenching and other final heat treatment should be arranged. The deformation caused by heat treatment can be eliminated by finishing.
(4) Guarantee CNC machining quality
In the rough machining of CNC parts, the metal layer cut out is thicker, the cutting force and tightening force are larger, and the cutting temperature is also higher, which will cause greater deformation. According to the processing stage, the machining error caused by rough machining can be corrected by semi finish machining and finish machining, so as to ensure the machining quality of parts.
ken.tang @ chengcg.com
About the author