Tools and CNC lathes are Precision machining Two magic weapons of manufacturers ， One big and one small ， Make the old and new contrast and complement each other 。 Tools are also Precision machining Manufactor Replace the most frequent tools ， In general, the tool must be replaced at least once in the machining procedure ， Complex parts must undergo several tool changes 。 Today, we will introduce the failure of the lower cutting tool in processing ：

　　1、 After processing ， Tool does not return to zero

　　 Natural Precision machining Program ， After operation ， The tool will automatically return to zero 。 If you do not return ， That's a problem with the control system 。 Cutting tool in the process of cutting ， Step motor cannot run too fast ， And Program At the end of the run ， The stepper motor is required to return quickly 。 If you want to run the stepper motor at high speed ， It must be driven by high voltage power ， The output torque can be increased 。 When the switch triode controlling the high voltage drive power supply fails ， Stay Program Return to zero point ， High voltage power supply cannot be connected ， The output torque of the motor does not meet the requirements ， The tool will not return to zero 。 Generally, replace the switch triode that controls the output of high-voltage drive power supply 。

　　2、 Tool return to zero ， But it's offside

　　 If the running resistance of the transmission system of the machine tool is too large ， Will appear Tool return to zero Offside 。

　　 Generally, the cutting tool is driven by low-voltage power supply ， Tool rest low speed feed ， The running torque of stepping motor is very small ， If the resistance of mechanical transmission system is too large, it will lose step 。 When the tool returns to zero, it is driven by high voltage power supply ， The running speed of stepping motor is high 、 Large torque ， No resistance in neutral operation ， Step motor will not lose step 。 Once in a while ， Sometimes lose step ， Don't lose step sometimes ， It will lead to offside when returning to zero 。 Check the gearbox of the next step motor ， Look at the drive gear 、 Screw 、 Whether there are sundries in the slide insert ， Is it too tight? ， Generally, it can be debugged normally 。