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How to solve the problem of THK ball screw
- Feb 13, 2019 -

How to solve the problem of THK ball screw


         1. After a long time of use of the ball screw, the track clearance will definitely increase with the

 wear of the ball, but how to adjust it back, the following is about the maintenance of the ball screw,

 but if the precision of the screw is damaged Unable to fix it.

 

         After the THK ball screw has been bent for a long time, some of the lead screws have a longer

 bending time. If the horizontal lathe bed rail or sliding guide rail wears, the sliding box cooperates

 with the opening and closing nut to sink. When the ball screw is working, it often only contacts the

 opening and closing nut that meshes with the upper half, and the lower half has a considerable gap.

 Radial forces can cause bending deformation of the lead screw together. Severe bending can cause

 sheet and torsional vibration of the drive, affecting the stability of the cutting and the quality of the

 machining. When checking, the dial of the rotating ball screw can be measured more accurately with

 a dial indicator. Straighten in time (such as pressure straightening, tapping and straightening). Try to

 eliminate internal stress during straightening. It can increase the low-temperature practical

 processing technology and reduce the thread and re-deformation of the light truck during use.

 

        2. The accuracy of the THK ball screw cannot be repaired, because if there is a thread problem,

 the screw will basically be scrapped. However, the clearance can be adjusted. If the positive and

 negative clearances are too large, the double nut screw can adjust the wear or damage. It is widely

 used to check and adjust the nut nut of the transmission on the CNC machine. In the process of using

 the ball screw, the nut will have different degrees of wear, deformation, looseness and displacement,

 which directly affects the machining accuracy of the machine tool. Regular inspections, adjustments

 and repairs must be carried out to restore specified accuracy requirements