CNC precision machining Factors affecting the precision
The requirement of CNC precision machining is that the precision must be accurate and indispensable. However, there are always external or own factors that affect the machining accuracy during CNC precision machining.
The requirement of CNC precision machining is that the precision must be accurate and indispensable, but there are always external or own factors that affect the machining accuracy during CNC precision machining. Then
1. It can avoid the factors that affect the dimensional accuracy of CNC machining
1. Processing technology
Most of the actual machining errors are caused by the unreasonable CNC precision machining process. On the basis of ensuring the basic machining process, try to minimize the machining error caused by iron filings on aluminum parts, because aluminum parts are very soft and the iron filings removed are very soft. It is easy to cause machining errors in aluminum parts.
2. Numerical calculation in manual programming and automatic programming
3. Three elements of cutting: cutting speed, feed, depth of cut and tool compensation
In simple terms, it is to adjust the parameters to give full play to the cutting performance of the tool under the premise of ensuring the quality of CNC precision machining and tool wear, so that the cutting efficiency is relatively high and the processing cost is lower.
4、Tool setting, inaccurate tool setting is also a factor that causes dimensional error, so try to choose a good edge finder, if the machine tool has an automatic tool setting device, it would be better
Two, irresistible factors:
1. The workpiece is cooled and deformed after processing
This is basically unavoidable. Try to pay attention to the use of coolant during processing, and pay attention to the deformation of the workpiece after cooling when performing on-site measurement.
2. The stability of the machine tool itself
If it is not a new machine tool or the machine tool has undergone a large number of CNC precision machining without debugging, there will be dimensional errors caused by the machine tool itself.