An evaluation must be done of the application. The main things to consider are load, orientation, speed, travel, precision, environment, duty cycle and programming.
1. Load. This can limit which robotic solutions are available right away. Consult the manufacturer’s specs to each robot to see if it something the robot can handle. Heavy payloads can deflect a robotic arm making it harder to consistently position the load with accuracy.
2. Orientation. This depends on how the robot is mounted and how it situates parts or products that are being moved. Space within the work envelope must also be considered. The main goal of this is to match the robot’s footprint to the work area.
|Codian Delta Robot
4. Precision. Delta, SCARA and six axis robots have a predefined accuracy rating making it easy to determine their repeatability of movement. Although this is ideal for some applications it can lock the user into one level of accuracy. A Cartesian robot once again can be customized if necessary for better precision. Also consider deflection. Heavy payloads = tougher success with precision.
5. Environment. Three main things need to be considered: space available in work envelope, hazards and environmental situations. Overhead mounting is a good option in limited space or pick and place applications. For environmental issues many robots are available in an IP65 model.
|ONEreach Cartesian Robot
7. Programming. The most suitable robot for an application also depends on the requirements for controls and programmability. Typically the most basic controls are available with a Cartesian robot because of the simplicity of the design. Articulated, Delta and SCARA robots require more advanced functions which results in more time implementing them into action. Another thing to consider is communication with external additions such as an end effector, tool or vision system.