4 Types of Robots Every Manufacturer Should Know | Robot manufacturer in delhi

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Here’s an overview of four types of industrial robots that every manufacturer should know.

1. Articulated Robots

It is the type of robot that comes to mind when most people think about robots. Much like the CNC mills, the articulated robots are classified by the number of points of rotation or axes they have. The most common is the 6-axis articulated robot. There are also 4- and 7-axis units in the market. Flexibility, dexterity and reach make articulated robots ideally suited for the tasks that span non-parallel planes, such as machine tending. Articulated robots can also easily reach into a machine tool compartment and under obstructions to gain access to a workpiece (or even around an obstruction, in the case of a 7-axis robot).

Sealed joints and protective sleeves allow the articulated robots to excel in clean and dirty environments alike. The potential for mounting an articulated robot on any surface (e.g., a ceiling or a sliding rail) accommodates a wide range of working options. The sophistication of an articulated robot comes with a higher cost compared to other robot types with similar payloads. And articulated robots are less suited than the other types of robots for very high-speed applications due to their more complex kinematics and relatively higher component mass.

2. SCARA Robots

A Selective Compliance Articulated Robot Arm (SCARA) is a good — and a cost-effective — choice for performing operations between the two parallel planes (e.g., transferring the parts from a tray to a conveyor). SCARA robots excel at the vertical assembly tasks such as inserting the pins without binding due to their vertical rigidity.

They are lightweight and have small footprints, making them ideal for applications in crowded spaces. They are also capable of very fast cycle times. Due to their fixed swing arm design, which is an advantage in certain applications, the SCARA robots face limitations when it comes to tasks that require working around or reaching inside objects such as fixtures, jigs, or machine tools within a work cell.

3. Delta Robots

Delta robots, also referred to as “spider robots,” use three base-mounted motors to actuate the control arms that position the wrist. Basic delta robots are 3-axis units but 4- and 6-axis models are also available. By mounting the actuators on or very close to the stationary base instead of at each joint (as in the case of an articulated robot), a delta robot’s arm can be very lightweight. This allows for rapid movement which makes the delta robots ideal for very high-speed operations involving light loads.

An important thing to note as you compare the delta robots to other robot types: Reach for delta robots is typically defined by the diameter of the working range, as opposed to the radius from the base, as in the case of articulated and SCARA units. For example, a delta robot with a 40” reach would only have half the reach (20” on a radius) of a 40” articulated or SCARA unit.

Also Read: Types of Robotic Arm and Its Uses

4. Cartesian Robots

They typically consist of three or more linear actuators assembled to fit a particular application. Positioned above a workspace, they can be elevated to maximize floor space and accommodate a wide range of work piece sizes. (When placed on an elevated structure suspended over two parallel rails, the cartesian robots are referred to as “gantry robots.”)

These robots typically use the standard linear actuators and the mounting brackets, minimizing the cost and complexity of any “custom” cartesian system. Higher capacity units can also be integrated with the other robots (such as articulated robots) as “end- effectors” to increase system capabilities. That said, the custom nature of the cartesian robots can make design, specification, and programming challenging or out of reach for smaller manufacturers intent on a “DIY” approach to robotics implementation. They are unable to reach into or around obstacles easily. And their exposed sliding mechanisms make them less suited for the dusty or dirty environments.

Choosing the Best Fit: When designers are making the decision to implement one of the five robot types in their processes, they need to consider the basic starting points for any motion application: load, orientation, speed, travel, precision, environment and duty cycle. Determining these factors will draw direct correlations to the corresponding robot type that will give them the most efficient and the effective results in their plant.