数控加工（CNC）是指机械工人运用数控设备来进行加工，这些数控设备包括加工中心、车铣中心、电火花线切割设备、螺纹切削机等，数控加工以连续的方式来加工工件，适合于大批量、形状复杂的零件。
Numerical control machining (CNC) refers to the use of CNC equipment by mechanical workers for machining, including machining centers, turning and milling centers, electric discharge wire cutting equipment, thread cutting machines, etc. CNC machining processes workpieces in a continuous manner, suitable for large-scale and complex shaped parts.
切削加工件要求
Requirements for machined parts
（1）零件应按工序检查、验收，在前道工序检查合格后，方可转入下道工序；（2）加工后的零件不允许有毛刺；（3）精加工后的零件摆放时不得直接放在地面上，应采取必要的支撑、保型托辊 吸水树脂 天津水处理设备 邯郸断桥铝门窗 唐山防水 检查井模具 沟盖板模具护措施，加工面不允许有锈蛀和影响性能、寿命或外观的磕碰、划伤等缺陷；（4）滚压精加工的表面，滚压后不得有脱皮现象；（5）工序热处理后的零件，表面不应有氧化皮，经过精加工的配合面、齿面不应有退火；（6）加工的螺纹表面不允许有黑皮、磕碰、乱扣和毛刺等缺陷。
(1) Parts should be inspected and accepted according to the process, and can only be transferred to the next process after passing the previous process inspection; (2) The processed parts are not allowed to have burrs; (3) When placing precision machined parts, they should not be placed directly on the ground, and necessary support and protection measures should be taken. The processing surface should not have rust, damage, or other defects that affect performance, lifespan, or appearance; (4) The surface of rolling precision machining shall not have peeling phenomenon after rolling; (5) After the heat treatment process, the surface of the parts should not have oxide skin, and the mating surface and tooth surface after precision machining should not be annealed; (6) The surface of the processed thread shall not have defects such as black skin, bumps, loose threads, and burrs.