Mover6 vs AL5D

[dgallegom]

Hey

I’m picking up a project in which I need a robot arm with quite a good precision (smaller than 1 mm) and repetability. I’ve already worked with the AL5D but now I need something more robust with a better precision. I haven’t been able to gather all the information to compare both of them in terms of precision, so the question is: What are the main differences in performance between the two of them and is the mover6 really that better and reliable to have such a price difference?

Than you for your help

[scharette]

Hi,

Simply put, the Mover6 has a longer reach (~50/60 cm instead of ~33 cm) and larger maximum payload than the AL5D. Therefore, with a lighter load, the Mover6 will most likely perform better (more precision / less jitter / etc.) then the AL5D.
Of course, this depends also heavily depends on the load used and distance of it from the base. The further from the base the payload is, the worse the performance, as with any other robotic arm.
The device is targeted at universities / R&D and includes a custom 3D programming software, which also is part of the cost.

Here is what the manufacturer has to say about use cases and precision/repeatability of the arm:

@manufacturer

The Mover robot arms are [font=sans-serif]suitable for the following use cases:[/font]

]Education, R&D, and other comparable tasks/:m]
]e.g. pick-and-place tasks/:m]
]e.g. positioning of sensors and cameras/:m]
]e.g. testing touch screens/:m]
]standard joint and linear motions with 4 or 6 joints/:m]

The Mover robot arms are not suitable for the following use cases:

]replacing a standard industrial robot arm/:m]
]industrial production/:m]
]continuous operation/:m]
]high precision tasks regarding a precise end position or a precise path/:m]
]tasks that require smooth and slow motions like drawing, writing, engraving, milling, …/:m]
*]tasks that require to apply force on a defined vector, like pressing parts into a fitting

/*:m]

@manufacturer

[font=sans-serif]Precision of the Mover Robot Arms[/font]
We do not provide any measures of precision (repeatability or absolute accuracy according to ISO9283) because applications requiring high precision are not suitable for the Mover robot arms. Please have a look at the videos on our homepage to see the possible motions. As a raw estimate the repeatability of a position is smaller than 1 mm (without load).
The theoretical resolution of the joints 1-4 is 66.4 counts per degree. The theoretical resolution of the joints 5 and 6 in the Mover6 robot arm is 1024 counts per rotation. (these joints are smart servo based).

Therefore, if you need constant sub-1 mm precision and have a load on the end-effector, this arm may not be able to provide the precision that you require.
Sincerely,