UNI ISO 3408-4 : 2009
Current
The latest, up-to-date edition.
BALL SCREWS - PART 4: STATIC AXIAL RIGIDITY
11-12-2009
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and subscripts
4.1 Symbols
4.2 Subscripts
5 Determination of static axial rigidity, R
5.1 General
5.2 Static axial rigidity, R
5.3 Static axial rigidity of ball screw, R[bs]
5.4 Static axial rigidity of ball screw shaft, R[s]
5.4.1 General
5.4.2 Rigid mounting of ball screw shaft at one end
5.4.3 Rigid mounting of ball screw shaft at both ends
5.5 Static axial rigidity of ball nut unit, R[nu]
5.5.1 Static axial rigidity of ball nut unit with
backlash, R[nu1]
5.5.2 Static axial rigidity of symmetrically preloaded
ball nut unit, R[nu2,4]
5.5.3 Correction for accuracy, f[ar]
Annex A (informative) Example calculation of static axial
rigidity in preloaded symmetrical double
nut system
Annex B (informative) Correction for load application, f[al]
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