The Method of Thermal-error Compensation Embedded in CNC Based on Bus

Thermal errors is the major contributor to the inaccuracy of the precision machine tools.The spindle thermal deformation measurement and modeling with THK6370 horizontal machining center were introduced.The method of the thermal error compensation embedded in the CNC system based on bus was expounded.The software and hardware designing of the compensation module were presented and the module was developed.The experimental result in THK6370 shows that the precision is increased 30%.