Adding a seventh axis to your six-axis robotic system can be beneficial in a number of ways. Your work envelope is expanded, allowing the use of smaller, less-expensive robots. Parts can also be transferred to multiple workstations at greater distances, and more machines and processes are able to be serviced with one robot, which reduces costs.
When adding a seventh axis to your system, it’s important to consider not just the needs of the robot, but also the requirements of the supporting actuator. In particular, you’ll have to pay attention to the actuator’s duty cycle, expected life and maintenance requirements.
Also, plan in advance your cable track mounting size and location to ensure that all necessary cabling will fit and the cable track movement will not interfere with the robot’s movements.