How is a delta robot characterized in terms of its work envelope?

A delta robot is characterized by its unique design, which typically includes three arms connected to universal joints at the base, allowing for a wide range of motion. This configuration enables the robot to operate within a cone-shaped work envelope. The design of the delta robot provides high speed and precision, making it suitable for applications such as pick-and-place tasks in manufacturing.

The cone-shaped work area results from the arm's ability to reach various points within a three-dimensional space while remaining anchored at the base. The servos that control the arms create a system that predominantly moves in a vertical and circular motion, defined by the geometry of its arm lengths and their fixed pivot points. Thus, the correct characterization of a delta robot emphasizes the distinctive cone shape of its operational range, where it can efficiently move to multiple points across a defined volume.