Theoretical Calculation and Simulation Analysis of Axial Static Stiffness of Double-Nut Ball Screw with Heavy Load and High Precision

Table 1

Geometric parameters of TDB-S-8010-type ball screw.

Parameter	Symbols and units	Number
Nominal diameter		80
Helical pitch		10
Nut outer diameter		105
The ball diameter		6.35
Contact angle	(°)	45
Helical angle	(°)	30
Raceway curvature ratio		1.04
Number of columns times the number of rolls		6
Thickness of pre-tightening gasket		14
Outer diameter of pre-tightening gasket		100
Pre-tightening gasket inner diameter		90
The thickness of the flange		20
Total nut length		290