What needs to be considered during the CNC cutting process?
Monitoring of the cutting sound during the cutting process. In the automatic cutting process, when the cutting is generally started, the sound of the tool cutting the workpiece is stable, continuous, and brisk. At this time, the movement of the machine tool is stable. As the cutting process progresses, when there are hard spots on the workpiece or tool wear or tool clamping, the cutting process becomes unstable. The unstable performance is that the cutting sound changes and the tool and the workpiece collide with each other. Sound, the machine tool will vibrate. At this time, the cutting amount and cutting conditions should be adjusted in time. When the adjustment effect is not obvious, the machine tool should be suspended to check the condition of the tool and workpiece.
Finishing process monitoring, finishing is mainly to ensure the processing size and surface quality of the workpiece, the cutting speed is higher, and the feed rate is larger. At this time, attention should be paid to the impact of built-up edge on the machined surface. For cavity machining, attention should be paid to overcutting and tooling at corners. To solve the above problems, one is to pay attention to adjusting the spray position of the cutting fluid so that the machined surface is always in the best cooling condition; the other is to observe the quality of the machined surface of the workpiece, and adjust the cutting amount to avoid as much as possible Changes in quality. If the adjustment still has no obvious effect, the machine should be shut down to check whether the original program is reasonable.
Tool monitoring, the quality of the tool largely determines the processing quality of the workpiece. In the automatic machining and cutting process, it is necessary to judge the normal wear condition and abnormal damage condition of the tool through methods such as sound monitoring, cutting time control, pause inspection during cutting, and workpiece surface analysis. According to the processing requirements, the tools should be processed in time to prevent the processing quality problems caused by the tools not being processed in time.
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