What Are Stationery Robots?

In modern day’s automation field, robots are used in industrial applications where they are tasked with handling dangerous, difficult and monotonous applications. These applications include lifting of objects, fixing parts, assembly, and also sorting and packaging of products. For this reason, robots are created differently to undertake different tasks.

Robots can be grouped into different categories based on their degree of freedom or collaborations, movement, function and also axes of rotation. Stationery robots are one type of these categories.

Stationery robots

These are a type of commercial robots with the ability to perform their task without changing or moving positions. The word stationery is used with relation to the base of the robot as opposed to the entire machine. While the base remains in one position, the robot above the base can move around to complete different tasks.

Stationery robots manipulate the environment they are in through position and orientation control of an end factor. These end factors can be welding, drilling or gripping of devices.

There are different categories of stationery robots:

Gantry robots

These are robots that operate in the X, Y and Z axes to reach an end position. Also referred to as rectilinear robots, these types of robots come with 3 linear joints that make use of the Cartesian coordinate system. The X, Y, and Z axes make use of guide rail that translates the end factor into the right position by moving the linear guide rails into the corresponding axis. These types of robots are ideal for pick and place applications, assembly operations as well as handling machine tools or arc welding.

Cylindrical robots

These are a type of cylindrical robots made with rotary joints on the joint axis that help with rotation movement. This robot comes with at least one rotary joint connected to the base and a prismatic joint that connects the links. These types of robots are used for spot welding, handling die cast machines and machine tools as well as in assembly operations.

Spherical robots

This is a type of robot that comes with a combined rotary joint, dual rotary joints, and a linear joint. Spherical robots operate in a polar coordinate system to create a spherical work envelope. The arms of these robots are connected to the base through a twisting joint. These robots can be used for spot welding, handling machine tools, fettling machines, die casting and gas or arc welding.

Scara robots

This is a type of robot used in assembly operation because of its movement abilities. They are created with a cylindrical compliant arm with two parallel joints that offer it compliance with one plane. These robots can be used to pick and place operations, handling of machine tools and sealant application.

Robotic arms

These are the common types of robots used in modern-day manufacturing plants. They are ideal for assembly operations which require the lifting of heavy and dangerous equipment. Also known as articulated robots, these arms are made with rotary joints ranging from simple 2 joints structure to a 10 or more joint structure.

Robotic arms are connected to bases with twisting joints. The rotary joints connect the links in the robotic arm with each joint going into a different axis. This provides the robotic arm with freedom. Robotic arm meant for industrial applications comes with 4 to 6 axes. These robots can be used for die casting, assembly operation, applying paint, gas and arc welding as well as fettling machines.

Parallel robots

These are types of robots used mainly for pick and place applications. They are most common in drug and food manufacturing companies as they offer efficiency in sorting and packaging. Also referred to as delta robots, parallel robots are created from joined parallelograms that are fixed to a common base. These parallelograms move one arm end tooling to create a dome-shaped envelope. These robots are capable of making precise and well-calculated movements in rotations. This is why they are suitable for food, electronics and pharmaceuticals industries.