In order to successfully implement a robot arm, some things should be taken into account when designing the system. When considering implementing an industrial robot, you should for instance think about the kind of task the robot is intended to perform.
6 Degree of Freedom (DOF) is a 6-axis robot: If your task is an operational task, you need to look for a robot that is very flexible and easy to implement, and typically, a 6-axis robot is the best choice because it is a so-called “robot arm”. It can move in 6 axes, which is easy to see because the robot's 6-joint motor is rotatable. This is also called 6 DOF (6 Degree of Freedom).
The reason for choosing 6 axes for a typical robot arm is that with 6 axes, the robot arm can turn and twist and reach almost all positions within its reach. A robot with less axes, for instance 5 or 4 axes, will typically have a blind spot where it cannot position itself because of limitations of physics. Notice that the joints consist of usual, rotating motors (i.e., they do not consist of linear motors).
Notice that the joints consist of usual, rotating motors (i.e., they do not consist of linear motors). This was a basic introduction to 6-axis robots. If you would like to know more about a suitable choice of robot and a successful implementation of robots, please read the next chapter on Learn About-Robots . It presents more details about specific types of tasks.
Operational task: Is it an operational task or a sequence of tasks, like what an operator currently does, for example tending another machine or handling items? An operational task is best understood if you consider that it is performed point to point, like for example pick and place where the picking and placing points are in focus. During an operational task, items are typically carried from one place to another – and although it is important that a certain path is followed in order not to run into some obstacle, it is actually not that important to follow a very accurate route between the picking point and the placing point. Process task: Or is it a process task which can be defined as producing or manufacturing something, for example painting, blasting, welding, gluing, or grinding? A process task is best understood if you consider that it is a continuous process from point to point, and it is therefore very important that a specific path is followed from point to point, e.g. laying out a glue fluid.
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