Two other installation methods for ball screws

One end is fixed, the other end is supported
One end is fixed and the other end supports this installation method. The bearing at the fixed end can also withstand axial force and radial force at the same time, while the supporting end only bears radial force, and can do a small amount of axial floating, and can reduce or avoid Bending due to the weight of the lead screw, in addition, the lead screw
Thermal deformation can freely extend to one end. Therefore, this is the most widely used structure. For example: domestic small and medium-sized CNC lathes, vertical machining centers, etc., all adopt this structure
Fixed at both ends
Both ends of the screw are fixed. In this way, the fixed end bearing can bear the axial force at the same time, and an appropriate pre-tightening force can be applied to the screw to improve the supporting rigidity of the screw, and at the same time, the thermal deformation of the screw can be partially compensated. Therefore, most large-scale machine tools, heavy-duty machine tools, and high-precision boring and milling machines adopt this structure. Of course, it also has shortcomings, that is, the use of this structure will make the adjustment work more cumbersome; in addition, if the pre-tightening force at both ends is too large during installation and adjustment, the final stroke of the screw will be longer than the design stroke. , The pitch will also be larger than the design pitch; and if the pre-tightening force of the nuts at both ends is not enough, it will cause the opposite result, which will easily cause the machine tool to vibrate and reduce the accuracy. Therefore, if the structure is fixed at both ends, it must be adjusted strictly in accordance with the instructions during disassembly or assembly, or adjusted with the aid of an instrument (dual-frequency laser interferometer) to avoid unnecessary losses. Ball Screw And Nut is your good choice.