Question: Both linear actuators and rotary actuators are actuators, so what are the differences between them?
In fact, linear actuators make objects move along a straight line, while rotary actuators make objects rotate at a certain angle. Therefore, linear actuators perform reciprocating motion, while rotary actuators perform rotational motion.
Simply put, a single motor is a rotary actuator. When current flows through a conventional servo motor, the motor rotates. Connecting the motor directly to a load creates a direct-drive rotary actuator. Many rotary actuators are combined with mechanical devices to form a mechanical lever structure, which helps to reduce rotational speed and increase torque. If the component ultimately performs rotational motion, then it is also a rotary actuator.
On the other hand, a rotary actuator can be connected to a mechanical device to convert rotary motion into reciprocating motion, thus creating a linear actuator.
What mechanical devices are mentioned here? Belts and pulleys, gearboxes, ball screws and lead screws, racks and pinions, etc. All of these mechanical devices can convert energy in some way. Belts and pulleys can be used to convert the rotary motion of a servo motor into linear motion. Gearboxes can convert rotary motion into linear motion by combining with mechanical devices. Ball screws and roller screws are commonly used to convert the rotary motion of a servo motor into precise linear motion.
It is worth noting that when motion transitions occur between multiple devices, certain physical laws must be followed to improve the actuator's response speed in order to achieve high bandwidth. Therefore, the actuator should be as close to the load as possible; for example, direct-drive rotary motors and direct-drive linear motor solutions typically provide the highest bandwidth systems.
What are the differences between linear actuators and rotary actuators ?
Question: Both linear actuators and rotary actuators are actuators, so what are the differences between them ?
In fact, linear actuators make objects move along a straight line, while rotary actuators make objects rotate at a certain angle. Therefore, linear actuators perform reciprocating motion, while rotary actuators perform rotational motion.
Simply put, a single motor is a rotary actuator. When current flows through a conventional servo motor, the motor rotates. Connecting the motor directly to a load creates a direct-drive rotary actuator. Many rotary actuators are combined with mechanical devices to form a mechanical lever structure, which helps to reduce rotational speed and increase torque. If the component ultimately performs rotational motion, then it is also a rotary actuator.
On the other hand, a rotary actuator can be connected to a mechanical device to convert rotary motion into reciprocating motion, thus creating a linear actuator.
What mechanical devices are mentioned here ? Belts and pulleys, gearboxes, ball screws and lead screws, racks and pinions, etc. All of these mechanical devices can convert energy in some way. Belts and pulleys can be used to convert the rotary motion of a servo motor into linear motion. Gearboxes can convert rotary motion into linear motion by combining with mechanical devices. Ball screws and roller screws are commonly used to convert the rotary motion of a servo motor into precise linear motion.
It is worth noting that when motion transitions occur between multiple devices, certain physical laws must be followed to improve the actuator's response speed in order to achieve high bandwidth. Therefore, the actuator should be as close to the load as possible; for example, direct-drive rotary motors and direct-drive linear motor solutions typically provide the highest bandwidth systems.
Tags: Kollmorgen actuators
