What guarantees the machining accuracy of machine tools? -4
- 29 December 2020
- CNC plate drilling machine
What guarantees the machining accuracy of machine tools?
Repeated positioning accuracy: refers to the consistent degree of position accuracy obtained by repeatedly running the same program code on the CNC machine tool. It is the consistent degree of continuous results obtained by processing a batch of parts under the same conditions (the same CNC machine tool, different operation methods, and the application of the same part program).Cutting accuracy: it is a comprehensive inspection of the geometric accuracy and positioning accuracy of the machine tool under the cutting conditions.
It can be seen from the above that the accuracy of CNC machine tools can be divided into mechanical and electrical aspects, such as spindle accuracy, such as runout, bus, etc.; the accuracy of lead screw; the accuracy of fixture during processing; the rigidity of machine tool, etc. The electrical aspect is mainly the control mode, such as semi closed loop, full closed loop, feedback and compensation mode, interpolation accuracy during processing, etc. Therefore, the accuracy of the machine tool does not depend on whether the machine tool is fully closed-loop.
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