+Robots.bmp) A SCARA robot has a linear vertical axis, two rotary axes that move the two arm linkages in the horizontal plane, and usually one additional axis for the wrist rotation. With a dedicated vertical axis, the vertical motions are smoother and quicker than in a coordinated axis motion. Furthermore, the rigidity of the robot frame is also very high in the vertical axis and the combination of the rotation motions assures a high compliance in the horizontal plane, facts very important in an assembly task.
A SCARA robot has a high repeatability (less than 0.025mm), and has also the highest speed of any other robot configuration (2000 to 5000mm/s). The robot structure is compact, such that the working envelopes are limited (ranges less than 1000mm). The payloads range from 10 to 100kg.
Due to its characteristics this robot was first used for precision, high-speed, light assembly. Common applications are inserting components on printed circuit boards, assembling small electromechanical devices and assembling computer disk drives. In recent years, the Scara robot has become more frequently used on a larger scale for palletizing applications.
+Robots2.bmp) Scara robots are well suited for stacking a single pallet where space is limited. A major "arm" is mounted such that the whole mechanism can move vertically. This arm is also capable of rotational movement. The wrist moves in a rotational manner as well, in order to rotate bags or cases for placement. Scara robots are fast and use little space. They may not be suited for applications that require multiple loading positions or pickup positions.
|
+Robots.bmp)
It's amazing how technology can help ease manual labour. I have just been employed in the Freight Forwarder business and technologies like this can greatly increase efficiency in terms of work rate or in profit terms. Sadly to say, I have not seen any of this in Singapore warehouses. It should be recommended to PSA don't you think?
Mohammad Farhan
Export Customer Service Officer