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Power Screw and Ball Screw

Power Screw

This program (algorithm) is used to design and check power screws. It is used to solve the following tasks:

  • Calculation of kinematic parameters (speed, torque, revolutions and power output...)
  • Simple selection / definition of power screw (metric, square, trapezoidal...)
  • Screw check for tensile/pressure, thrust, bend, buckling and critical revolutions.
  • The program contains a table of materials, threads and friction coefficients.
  • Support of 2D CAD systems.

The calculation is based on data, procedures and algorithms from specialized literature and AGMA, ISO, DIN and BS standards.

List of standards: (ISO 68-1, 68-2, ISO 724, ISO 965, ISO 2904: 1977, DIN 513, CSN 01 4050, CSN 01 4052, ANSI/ACME B1.5-1977, ANSI/ACME B1.9-1973, ASME B1.1-2003, IS 4694-1968....)

Literature: Mechanical engineering design (Konstruování strojních součástí), Textbook of Machine Design, Machinery’s Handbook 26th Edition, Části a mechanismy strojů

Design and Check of Power Screws

Ball Screws

This program (algorithm) is used to design, calculate and check ball screws. It is used to solve the following tasks:

  • Preliminary design (minimum input parameters – sufficient to navigate and select from catalogs)
  • Detailed analysis (load, dimensions, parameter check)
  • Load spectrum table definition (speed, torque, revolutions and power output...)
  • Calculation of an equivalent load
  • Service life calculation, tolerances, temperature analysis
  • Tensile/Pressure, thrust, bend, buckling and critical revolutions
  • Lubrication proposal and efficiency calculation
  • The program contains tables of screws according to ISO and ANSI
  • Support of 2D CAD systems

The calculation is based on data, procedures and algorithms from specialized literature and AGMA, ISO, DIN and BS standards.

List of standards: ISO 3408-1:2006; ISO 3408-2: 1991; ISO 3408-3:2006; ISO 3408-4:2006; ISO 3408-5:2006; ISO 286-2:2010; DIN ISO 3408; JIS B1192-1997; JIS B1192-2018; DIN 69051-5; ANSI B5.48

Company cataloques: THK, PMI, KSK, NSK, SKF, HIWIN, KURODA, NOOK, THOMSON, Steinmayer, MANESMAN

Preliminary design - ball screw Ball screw basic dimensions
Ball screw mechanism Ball screw mounting 2D drawing of a bolt and nut