BS 6101-4:1987
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Machine tool ball screws Method of calculation of static axial rigidity
Hardcopy , PDF
11-30-2006
English
07-31-1987
Foreword
Committees responsible
Method
0. Introduction
1. Scope
2. Definitions
3. Notation
4. Method of determining rigidity
4.1 General
4.2 Overall rigidity
4.3 Rigidity of the ball screw shaft
4.4 Rigidity of nut body and screw shaft under radial
component due to axial load
4.5 Rigidity in the ball/ball track area
4.6 Rigidity of a symmetrically preloaded nut system
4.7 Rigidity of the ball screw within the loaded ball
nut area
4.8 Accuracy factor
4.9 Overall rigidity
Appendices
A. A graphical solution to 4.5. Rigidity in the ball/
ball track area
B. Worked example of calculation of rigidity
Table
1. Accuracy factor
Figures
1. Notation of the ball screw
2. Ball screw shaft rigidly mounted at one end
3. Ball screw shaft rigidly mounted at both ends
4. Relative displacement between ball nut and ball
screw shaft due to axial backlash
5. Preloaded ball nuts
6. Graphs to illustrate calculation of rigidity
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