The red boundary is the shape of the work
envelope described by this type of robot. Unlike the simplest
robot of Cartesian type, this has one rotary base with two linear
axes for Vertical and Horizontal movements. These are besides
the three axes at the end of arm viz. Roll, Pitch and Yaw.
The rotary base gives a possibility of
accessing and interacting with its environment all around. In
special application requirements, it is possible to give a continuous
rotation for improving throughput, instead of wasting any retracing
paths, as would be the case in a ±360º type of implementation.
The requirements of communication and power distribution within
the robot are taken care of through “Bluetooth”/optonics
and slip ring technologies.
The cylindrical coordinate robots are eminently suitable for tending
to multiple machines or rotary sequential processes, viz. Incoming
bin Raw stock Furnace quenching bath Out going stock bin, positioned
in a semi-circular array. The robot need not retrace a wasteful
path to the Raw stock bin and instead can take a shorter path,
continuing the rotary action.
