A Linear Actuator is different from electric motor because it applies drive in a linear way instead of rotationally. The linear motion may be achieved in different ways and a linear actuator is likely one of the devices that may covert rotational motion to linear motion.
Mechanical type
A mechanical actuator converts the rotary motion to linear displacement via screws/gears to which a knob is attached. One of the renowned examples of mechanical actuator is a jackscrew or car jack. Mechanical actuator is used in lasers and optics for manipulating the position of mirror mounts, linear stages and many more positioning instruments.
Hydraulic type
A hydraulic actuator or cylinder has a hollow cylinder with a piston inside it. Controlled linear displacement of the piston is achieved by pressurizing/de-pressurizing two sides of the piston. Hydraulic car jack is the most common example of a manually operated hydraulic actuator.
Electro-mechanical type
A linear electromechanical actuator is a in which a nut is the main part of the motor. The lead screw of the actuator would not rotate and the lead nut is rotated by the motor. It’s just like mechanical actuator but an electrical motor is used instead of a management knob or handle.
The fashionable linear actuators come in numerous designs and each manufacture has their own proprietary methods of making actuators.
Principles of Linear Motion Actuators
The fundamental operation principle of linear motion actuators is an inclined plane. The lead screw has threads, which act as ramp and permit small rotational force that can be utilized over lengthy distance for achieving the movement of enormous load within a shorter distance.
Variations in Linear Movement Actuators
There are different variations within the basic design of linear actuators. Many of the units have general improvements like higher pace, effectivity or load capacity. Nowadays, manufacturers are additionally focusing more on reducing the dimensions of these actuators. There may be number of actuators available in market, which fits specific industrial needs of buyers.
What make linear motion actuators better compared to other motors are their quicker pace, higher accuracy and greater acceleration. These are used for gantry axes, general goal position, gantry axes and assembly machines. Linear actuators are specially meant for use in adverse conditions and act as replacement in opposition to other hazardous actuators for performing the job.
Apart from linear actuators, DC actuators are also used for performing related applications. These run smoothly and do not produce a lot noise. Many DC actuators available in the market are water proof. Buyers can go for normal as well as customized range of actuators depending on their need and budget.