linear actuator

All drive systems that lead to a translational movement are referred to as linear drives or linear drive systems . Linear drives enable the movement of machines (elements) and systems (parts) in a straight line or another predetermined course.

In the technical version there are:

• Ball screw drives (threaded rod drives )
• Roller screw drives
  • Roller screw drive with roller return
  • Planetary roller screw drive
• Hydraulic cylinder
• Pneumatic cylinder
• electromechanical linear drives
  • Linear motors with an electrodynamic operating principle
  • Linear actuators with piezoelectric, electrostatic, electromagnetic, magnetostrictive or thermoelectric operating principle

The maximum travel range of linear drives can be increased by connecting several drives in series, as in telescopic drives. Linear drives can also be used to generate non-linear movements, for example via crankshafts or with the help of a hexapod .

literature

• James G. Humphrys: Electromechanical linear actuators solve specific application problems. Actuator Systems, Intertec Publishing Corp., Overland Park, Nov. 1979, pp. 26-31