How to monitor and adjust during cnc processing?

After the workpiece is aligned and the program is commissioned, it can enter the automatic machining stage. During the automatic machining process, the operator monitors the cutting process to prevent workpiece quality problems and other accidents caused by abnormal cutting.

The following aspects are mainly considered for monitoring the cutting process:

1. Process monitoring The main consideration of roughing is the rapid removal of excess allowance on the surface of the workpiece. During the automatic machining of the machine tool, the tool automatically cuts according to the predetermined cutting path according to the set cutting amount. At this time, the operator should pay attention to observe the change of the cutting load during the automatic machining process through the cutting load table, adjust the cutting amount according to the bearing capacity of the tool, and maximize the efficiency of the machine tool.

2. Monitoring of cutting sound during cutting In the automatic cutting process, when the cutting is started, the sound of the cutting workpiece is stable, continuous and brisk. At this time, the movement of the machine is stable. As the cutting process progresses, the cutting process becomes unstable when there are hard spots on the workpiece or tool wear or tool feeding. The unstable performance is that the cutting sound changes, and the tool and the workpiece will collide with each other. Sound, the machine 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 should be suspended and the condition of the tool and workpiece should be checked.

3. Finishing process monitoring and finishing, 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 influence of the built-up edge on the machined surface. For the cavity machining, it should also pay attention to the machining of the cut and the knife at the corner. For the solution of the above problems, one should pay attention to adjust the spray position of the cutting fluid, so that the machining surface is always in the cooling condition; the second is to pay attention to observe the quality of the machined surface of the workpiece, and to avoid the change of quality as much as possible by adjusting the cutting amount. If the adjustment still has no obvious effect, it should be reasonable to stop the inspection of the original program. It is important to note that when you pause or stop the inspection, pay attention to the position of the tool. If the tool stops during the cutting process, a sudden spindle stop will cause a tool mark on the surface of the workpiece. Generally, stop the machine when the tool leaves the cutting state.

4, the quality of the tool monitoring tool 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 of the tool through sound monitoring, cutting time control, pause check during cutting, and surface analysis of the workpiece. 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.