The Study on Highly Precise Linear Motion Ball Guide System
Tohru Takahashi, Shoji NOGUCHI · Journal of the Japan Society for Precision Engineering · 2020
Linear Motion Ball Guide is widely used over various industrial machines commencing with machine tool, which becomes now an essential necessity as machine component. In the field where required high precision, however, a peculiar phenomenon in Linear Motion Ball Guide called “Waving” has been questioned and which kept some clients at a distance from using Linear Motion Ball Guide. It is known that the generating factor of Waving and Ball Circulation are linked closely, so I decided to apply the load distribution theory to each and every position of moving balls of Linear Motion Ball Guide to ascertain the condition of load distribution and posture displacement.What I found is that the crowning of raceway is intimately related to Waving, and that there is a configuration in crowning which minimize Waving. By applying this technology to the condition of clients using Linear Motion Ball Guide, and I developed the Linear Motion Ball Guide which can be used without problem even in the field of high precision.