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Linear Motion Tracks For Robotic Positioning

2019-04-09

By Lisa Eitel • Robot-positioning tracks can add flexibility to manufacturing spaces, but must be fast, accurate, and safe to be truly useful. Here we take a look at drives that deliver.

Robot positioning systems are long tracks in warehouse, aerospace, and automotive facilities to let one robot perform multiple tasks. Also called robot-transfer units or RTUs, these motion designs are increasingly common for assembly, large-scale welding, and warehousing.

Mifanohitra amin'ny fametrahana fomba fanao mahazatra ny robot iray amin'ny bolongana, ny RTU dia mandroso robots amin'ny asa-sela sy ny orinasa ary mamakivaky azy ireo eo anelanelan'ny fiantsonana. Ny fametrahana tsara indrindra ho an'ny RTU dia ireo naorina fotsiny na ireo izay ahafahan'ny processions sy ny milina mifandraika amina laharana mahitsy. Raha toa ka mandroso robots enina ny RTU, dia indraindray dia antsoina hoe ny ampahany fahafito (na mazàna kokoa, raha toa ka manana fahafahana fito ny fahafaha-manao, ny fahavalo fahavalo). Raha toa ka anisan'ireo endrik'ireo trakitra ireo ny tapany, anisan'izany ny endrik'ilay robot mihantona, dia izy ireo no entana.

No matter the robot or track morphology, the point of the extra axis is to add translational motion. This either extends the work envelope or lets a robot transport work-pieces or tools. In some arrangements, the former lets a robot tend multiple machines or pick pallets from rows, or machine very large components. For the latter, common applications are packing, welding, plasma-arc cutting, and other mechanical tasks.

Here we focus on drive options for RTUs. However, note that engineers must also decide between an array of guides and bearings (usually in the form of cam followers or profile guides).