How Critical Is Motor Consistency for a Flexible Feeding Vibration Platform Handling Small Parts?
In today's assembly, palletizing, sorting, injection-moulding and similar industries, rapid product upgrades constantly change part geometries. Conventional vibratory bowl feeders can no longer cope with this fast pace of change. At present, most robotic cells are still supplied by either vibratory bowls or by operators who place parts on belts or trays. Both approaches have serious drawbacks:
Manual placement
Traditional vibratory bowl feeding
Very limited universality; parts must meet strict shape and size rules
Time-consuming, costly change-overs and re-tuning
Long debug times and low efficiency
Risk of cosmetic damage to parts
Large footprint and heavy vibration; cannot be mounted directly on precision machinery
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With the rapid growth of vision-guided robotic assembly, a flexible vibratory feeding platform has emerged to fill the gap. It can handle many different parts and allows product change-overs in minutes, while interfacing seamlessly with vision localisation and robot picking systems.
The platform recognises and controls part orientation. Four linear motors (one at each corner) adjust their stroke to make parts move forward / backward / left / right or flip over, ensuring that every part stays within the field of view of the industrial camera and is presented in the correct orientation. The system is highly controllable, change-overs are tool-free, labour input and intensity are reduced, and throughput rises. Once the robot has emptied the visible area of correctly oriented parts, the vision controller signals the platform to re-shuffle the remaining parts until new, correctly oriented parts appear. No jamming, no wrong parts, even mixed parts can be distinguished. Changing parts only requires a parameter update—no mechanical adjustments. Combined with a robot and an intuitive vision interface, the solution paves the way for unattended production.
The motors inside a flexible vibratory tray are usually purchased as sub-assemblies made of permanent magnets and enamelled coils. The stationary part is the stator; the moving part (the forcer) can be either the magnets or the coils. The coil windings use multi-coated, pure-copper enamelled wire.
Poor motor consistency means that, even when the same electrical parameters are set, different motors cannot be swapped without losing synchronisation. Causes include:
Different magnet sizes or magnetisation patterns between batches, shifting the magnetic centre
Different copper-wire batches with varying diameters, altering the electromagnetic centre
Different machining sequences for the coil former/housing, leading to performance scatter
All of this complicates multi-motor commissioning.
Danikor has built a complete manufacturing and quality-control system for its flexible vibratory trays, flexible part arrayers and related accessories. The product line meets the needs of agile, low-volume / high-mix production where frequent product change-overs are the norm. Our mission is to solve every automatic feeding challenge and make part feeding simple.
Contact us for further information.