模具零件中相关定位槽或锁紧位置（U形槽）加工错误一般是因工人粗心造成，定位槽加工错误一般可以加装镶件。U形槽是安装锁紧用，涉及模具的使用安全和使用寿命，U形槽夹持位置的厚度a和夹持面厚度b强度必须足够，以满足压力机夹持器的夹持要求，夹持面面积（C决定）必须足够，以确保夹持面能承受足够的压力；U形槽与模具本体连接处的壁厚D和倒角不能烧焊、不能存在应力集中，如图8所示。
The machining error of positioning slot or locking position (U-shaped groove) in mold parts is generally caused by carelessness of workers, and the insert can be added to the positioning groove processing error. The U-shaped groove is used for installation and locking, which involves the safety and service life of the die. The thickness a and the thickness B of the clamping surface of the U-groove must be strong enough to meet the clamping requirements of the press gripper. The area of the clamping surface (determined by C) must be sufficient to ensure that the clamping surface can bear sufficient pressure; the wall thickness D and chamfering of the joint between the U-groove and the mold body cannot be welded or stored In the stress concentration, as shown in Figure 8.
图9 型面机加工流程
Figure 9 machining process of profile
型面机加工是模具在一次装配后流水槽模具 u型槽模具 电缆槽模具 隔离墩钢模具 护坡砖模具 钢制闸门 螺杆式启闭机 卷扬式启闭机主要对模具零件型面进行机加工，型面机加工流程如图9所示。型面加工完成后，实际加工型面轮廓跟理论型面的偏差控制在0.01mm以内。型面加工容易出现的问题是在型面精加工时出现停电停机或者机加工数据出错，为保证型面加工精度，需要重新精加工，延长加工时间。
Surface machining is mainly used to machine the surface of mold parts after one-time assembly of the mold. The machining process is shown in Figure 9. After the profile is finished, the deviation between the actual profile and the theoretical profile is controlled within 0.01mm. In order to ensure the accuracy of surface machining, it is necessary to re finish and extend the processing tim