Trouble Shooting for Milling Machine Trouble The workpiece milled is not flat Solution Adjust the spindle bearing gap The gibs of X、Y axis are loose Adjust the gibs’ gap The processing amount is too Choose reasonable much processing amount The tools are damaged Change the tools The machine shakes The machine is located Retighten the machine when cutting unsteadily workpiece The cutting condition is not Choose suitable cutting good feed Handle feeling is the wedge is too tight Adjust the wedge heavy The gap between lead screw Adjust the gap and screw nut is not right Oil line blocked Check the oil line and repair it No oil in oil pump Add oil The oil pump does not work check the oil pump and oil line The spindle sleeve is The spindle sleeve lacks of oil Add oil tight The spindle sleeve is dirty Clean the spindle sleeve and repair it No coolant liquid The water pump does not work Check the water pump The water pump turns in Change its rotation reverse direction direction The spindle feed is not The fixed bar of hi‐lo sleeve is Loosen the fixed bar smooth not loosened The spindle brake The brake circle is damaged Change the brake circle does not work normally The spindle does not The switch has poor contact Check the power switch rotate The belt is too tight Adjust it Something with the motor Repair it Wrong rotation The power switch turns to the Change the switch direction wrong direction indication position Analysis The spindle bearing is loose

2. Maintenance 2.1Everyday maintenance 1Check the coolant liquid level, and decide whether the liquid should be added. 2Check the lubrication pump’s oil level, and decide whether the oil should be added. 3Clean the spindle hole with clean cloth, then sprinkle some light oil. 4Clean the scraps in the chuck to assure the accuracy. 5Clean the exposed limited switch to keep it from damage. 6When choosing the coolant system, clean the messes in the chip tray in case of liquid outlet blocking. 7Keep the environment all round the machine clean. 8The working light should be turned off in ten minutes after it is used for eight ...