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Home> Industry Information> Fault Diagnosis of Ball Screw Pair in the Treatment of Common Faults of CNC Machine ToolsFault Diagnosis of Ball Screw Pair in the Treatment of Common Faults of CNC Machine Tools
January 07, 2022The majority of Ball Screw pair failures are caused by reduced motion quality, excessive backlash, mechanical creep, and poor lubrication.Serial numberFault phenomenoncause of issueelimination method1High roughness value of processed partsThe lubricating oil of the guide rail is not enough, causing the sliding plate to crawlAdd lubricating oil to eliminate lubrication failureThe ball screw is partially rough or damagedReplace or repair the screwReplace damaged bearingsThe servo motor is not adjusted well, the gain is too largeAdjust the servo motor control system2Large reverse error and unstable processing accuracyLoose cone sleeve of screw Shaft CouplingRetighten and repeat the test with a dial indicatorScrew shaft slide plate is too tight or too loose with the pressure plateRe-adjust or repair, use 0.03mm ruler to be qualifiedScrew shaft slide with wedge iron is too tight or too looseRe-adjust or repair to make the contact rate reach over 70%Ball screw pretension is too tight or too looseAdjust the preload force and check the axial runout value so that the error is not greater than 0.015mmThe end surface of the Ball Screw Nut is not perpendicular to the Coupling surface, the coupling is too looseRepair, adjustment or cushioningThe preload of the screw bearing is too tight or too looseRepair adjustmentLarge manufacturing error of ball screw or axial movementAutomatic compensation with the control system can eliminate the gap, use the instrument to measure and adjust the screw movementInsufficient or no lubricantAdjust to lubricating oil on each guide surfaceOther mechanical interferenceExclude interference3The torque of the ball screw is too large during operationTwo skateboards cooperate with the pressure plate too tight or damageReadjust or repair the pressure plate to make the 0.04mm caliper plug not qualifiedThe ball screw nut reverser is damaged, the ball screw is stuck or the shaft end nut pretension is too largeRepair or replace the screw and adjust carefullyScrew damagereplaceServo motor and ball screw are connected to different shaftsAdjust the coaxiality and tighten the connection seatNo lubricantAdjust the lubricating oil pathMechanical failure caused by overtravel switch failureCheck the fault and eliminate itServo motor overheating alarmCheck the fault and eliminate it4Poor lubrication of screw nutWhether the oil separator divides the oilCheck the quantitative oil separatorWhether the oil pipe is blockedRemove dirt and make the tubing unblocked5Ball screw noiseBall Screw Bearing gland is not pressed properlyAdjust the gland to make it tight against the bearingPoor lubrication of ball screwCheck the oil separator and the oil circuit to make sure the oil is sufficientThe above is the Fault Diagnosis of Ball Screw Pair in the Treatment of Common Faults of CNC Machine Tools we have listed for you. You can submit the following form to obtain more industry information we provide for you.
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