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The challenge: 3D robot guidance requires offsets in 6 degrees-of-freedom

3D robot guidance requires calculating an object's pose in 6 degrees-of-freedom (DoF): position (x,y,z) and orientation (Rx, Ry, Rz).

By comparing a sample object's pose to its nominal pose an offset is calculated.

The object's nominal pose is known to the robot.  By applying the offset to the nominal pose, the robot adjusts to the sample part's pose before executing its pre-programmed task.

Liberty Reach takes an innovative approach to 3D robot guidance

LR Guidance Systems use 3D volumetric sensors with advanced proprietary algorithms to calculate part offsets in 6 degrees of freedom.  

This method has several advantages:

  • One shot is required to calculate offsets - a half a second from image to offset
  • No external lights are required; sensors are not affected by ambient lighting
  • Larger part shifts & rotations that fault other vision systems are not a problem
  • One set of sensors can be used for multiple part styles - no additional hardware is required
  • The system can help with quality control - triggering faults when a sample part is warped compared to the reference

The technology is made possible by recent advances in sensor technology, intelligent software, and computing technology:

Sensor Technology

Proprietary volumetric sensors generate a 3D point cloud to represent an object's surfaces in a single shot.  

Invisible, near-infrared lasers are built in - making the sensors immune to flashing factory lights that cause faults in other vision systems.

Intelligent Software

Advanced algorithms developed by Liberty Reach compare an object in different poses to generate an accurate offset in 6 degrees of freedom.  The offset is sent to the robot so it can adjust to the unique pose of the workpiece.

Improved Processors

Recent advances in computer processors allow 3D data to be processed in a fraction of the time.

Point cloud processing algorithms that used to take hours to calculate now take a quarter-second.

Want to learn more?

We're intentionally vague in describing our technology.  We don't want to share our secret sauce to the world on a website.

Request a demo, chat with us about your needs, and we'll happily fill you in about the inner workings of our technology.