What are the common faults in CNC lathe machining?
CNC lathe processing is a high-tech processing method of precision hardware parts.In the process of processing,computer control technology is used,and the computer control of the lathe reduces the probability of problems in the lathe,but the reduction does not mean no,or it will malfunction.What are the common mechanical failures of CNC lathe machining?
CNC wear parts processing
1.The feed drive chain is faulty.Since the guide rails of CNC machine tools generally adopt rolling friction pairs,the failure of the feed drive chain is mainly caused by the deterioration of the motion quality,such as the mechanical parts not moving to the specified position,the operation is interrupted,the positioning accuracy is decreased,the backlash is increased,and the machine is mechanical.Crawling,bearing noise becomes larger(generally after the collision),etc.,this part of the fault can be solved by adjusting the pre-tensioning force of each sports pair,adjusting the loosening link,improving the motion accuracy and adjusting the compensation link.
2.The spindle component is faulty.Due to the use of adjustable speed motors,the spindle box structure of CNC machine tools is relatively simple,and the automatic tensioning device and automatic speed control device are prone to failure.
3.The automatic tool changer(ATC)is faulty.More than 50%of the faults of the machining center machine with automatic tool changer are related to the automatic tool changer.The main performances are:the movement of the tool magazine,the positioning error is too large,the handle of the robot is unstable,and the movement error of the robot is large.When the fault is serious,the tool change is stuck and the machine is forced to stop working.
4.The stroke switch pressing fault for detecting the movement position of each axis.On CNC machine tools,in order to ensure the reliability of the automation work,a large number of stroke switches for detecting the movement position are used.After long-term operation of the machine tool,the movement characteristics of the moving parts change,the reliability of the stroke switch pressing device and the change of the quality characteristics of the stroke switch itself have a great impact on the fault occurrence and troubleshooting of the whole machine.
5.Failure of the accessory.The reliability of the cooling device,the chip conveyor,the guide rail cover,the coolant shield,the spindle cooling thermostat tank,and the hydraulic oil tank on the CNC machine tool are not high,which may cause malfunction and affect normal operation.
In addition to the common mechanical failures of several kinds of CNC lathes mentioned above,we often encounter faults caused by human factors.Therefore,we must master the operation method of CNC lathe machining.We can't avoid certain faults of machinery.We can What you do is start from yourself,try to reduce the occurrence of faults and maintain the CNC lathe.