Cartesian Robots Are a Simpler, Lower-Cost Alternative to SCARA and Six-Axis Robots

Of the various robots used for automated assembly, the Cartesian robot is the least complex. Also known as a linear or gantry robot, a Cartesian robot can only move its end effector in straight lines along the X, Y and Z axes.

Source: Cartesian Robots Are a Simpler, Lower-Cost Alternative to SCARA and Six-Axis Robots