What Are The Judgment Methods Of Nc Tool Wear

[Esperanza Goudy]

1. Tool life table (based on the number of processed workpieces), which is used by some high-end equipment manufacturing industries or single product batch milling operation types production enterprises to guide production. This method is suitable for aerospace, steam turbine, automobile key components such as engine and other production enterprises with expensive workpieces
2. Look at the processing. If there are intermittent irregular sparks during the processing, it indicates that the tool has been worn. The tool can be changed in time according to the average service life of the tool
3. Look at the color of iron chips. If the color of iron chips changes, it indicates that the processing temperature has changed, which may be due to tool wear
4. Look at the shape of iron filings. There are serrations on both sides of iron filings. Iron filings curl abnormally and iron filings become finer. These phenomena are the basis for judging tool wear
5. There are bright marks on the surface of the workpiece, but the roughness and size have not changed greatly. In fact, the tool has been worn
6. Listen to the sound, the processing vibration intensifies, and abnormal noise will occur when the tool is not fast. At this time, pay attention to avoid "stabbing" and scrapping the workpiece
7. Observe the load of the machine tool. If there is an obvious incremental change, it indicates that the tool has been worn
in addition, obvious phenomena such as serious burr, roughness reduction and workpiece size change are also the criteria for judging tool wear.