Skip to content
English
Sign in
Go to Robotiq.com
  • There are no suggestions because the search field is empty.

Flipping Asymmetrical Parts with a V-Jig in Bin Picking Applications

Efficiently present parts on a consistent side using a simple mechanical jig.

Context

In many bin picking applications, parts are not symmetrical. This creates challenges for downstream operations, as the robot may randomly pick the part from either side A or side B. Training the system to handle both orientations adds complexity and reduces efficiency.

A practical solution is to flip all parts so they are consistently presented on the same side before processing

 

 

1. Problem: Asymmetrical Part Orientation

  • Without flipping:

    • Robot must be trained to handle two orientations.

    • Increases cycle time and programming effort.

    • Risk of inconsistent part presentation to downstream tools or stations.

  • With flipping:

    • All parts presented in a consistent orientation (e.g., always on side A).

    • Simplifies program logic and improves throughput.

 

2. Solution: Use a V-Shaped Jig

A V-shaped jig provides a simple, reliable way to flip parts automatically.

Process flow:

  1. Robot grips and drops the part onto the jig with its B side facing down.

  2. The angled surfaces guide the part into a flip motion.

  3. The part comes to rest on its A side.

  4. Robot picks the part again in the correct orientation.

 

3. Implementation Details

When designing or using a V-jig, consider the following:

  • Angle of the V:

    • Typically between 60°–90°, depending on part size and weight.

  • Material:

    • Use durable, low-friction surfaces (e.g., UHMW or coated steel).

    • Add anti-slip treatments if parts bounce or misalign.

  • Stability:

    • Securely mount the jig to avoid shifting during repeated flips.

  • Clearance:

    • Ensure the jig allows free flipping without trapping or wedging parts.

 

4. Throughput Considerations

Using a flipping step adds time to the cycle. To help assess feasibility:

  • Green zone: Feasible for moderate cycle times (low-to-medium throughput).

  • Yellow zone: Challenging for high-speed operations (requires careful optimization).

  • Red zone: Nearly impossible if throughput demands are extremely high.

Tip: For faster operations, you can optimize the dropping motion so parts flip directly onto side A in one step—bypassing the need for a second pick.

 

5. Safety and Reliability Tips

  • Use slow and controlled speeds when dropping parts to avoid bounce.

  • Test with multiple part samples to confirm flipping consistency.

  • Add guide walls if parts risk sliding off the jig.

  • Regularly check jig wear and replace surfaces if flipping accuracy decreases.

Conclusion

Flipping asymmetrical parts with a simple V-shaped jig ensures consistent orientation for downstream operations, simplifying robot programming and improving process reliability. While flipping adds a step to the cycle, it often pays off in reduced complexity and higher overall efficiency.