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AM Ball Screws - Manufacturing Drawing

Manufacturing Drawing

Economic Design Recommendations

Manufacturing Drawing Example

Design Key Points

Item Recommendation
1. Flange Diameter Flange diameter ≦ screw outer diameter da. Avoid flange diameter larger than da if possible.
2. Shaft Diameter Shaft diameter on at least one side of the thread for nut assembly, d = dk = d0 - ball diameter - 0.5 (also applies to undercut grooves).
3. Deep Nitriding AM ball screws have deep nitrided bearing seats. Please identify all surfaces that must remain unhardened. Fine pitch threads always remain unhardened.
4. Geometric Tolerances Geometric tolerances according to DIN 69051.
5. Series Design Provide screws of different lengths - with the same nominal diameter and lead - with identical screw ends and nuts ("part families").
6. Standard Nuts Consider nuts conforming to German standard DIN, preferably AM standard 2.51 or 2.52.

Drawing Specification Requirements

Please include the following performance characteristics in your drawings:

Characteristics Symbol Value / Option Unit
Nominal diameter d0 mm
Nominal lead P mm
Direction of lead L.H. (Left-hand) R.H. (Right-hand)
ISO precision class IT type
Tolerance of specified lead ±ep µm/lu
Variation V300p µm
Type of nut system (abbr.) type No.
Nut rigidity Rnu kN/µm
- No-load torque without wipers Tpr0 Nm
- Preload Fpr kN
Mean load Fm kN
Mean speed of rotation nm min-1
Max. speed of rotation nmax min-1
Acceleration a m/sec²
Moved mass m kg
Lubrication
Mounting position Horizontal Vertical
Driven element Nut Screw

Design Checklist

Drawing Review Points

  • Confirm flange dimensions do not exceed screw outer diameter
  • Check shaft diameter meets nut assembly requirements
  • Mark areas that need to remain unhardened
  • Confirm geometric tolerances conform to DIN 69051
  • Consider using standard nuts to reduce costs
  • For series products, unify screw end design
ESC