Flexible robotic fingers

Machine, Science & engineering

UNMET NEED

Most manufacturers use, for handling their products during production or assembly, mechanical grippers on which they typically attach a set of jaws dedicated to grasping a particular geometry. However, a different set, often custom-made, must be used for each different object shape. A possible yet very costly alternative is to use articulated robotic hands, which can adapt to any shape, but besides their cost, controlling their numerous actuators is complex and time consuming. A versatile, simple solution that can grip both soft and rigid objects, fragile or sturdy, heavy or light, would be ideal.

Video demonstration

TECHNOLOGY OVERVIEW

The technology proposed here allows to integrate, directly on a classical industrial gripper, a set of mechanical fingers able to self-adapt to various shapes. Since they only use passive elements (i.e. no motor or electronics), these fingers are a lot cheaper than robotic hands but nevertheless able to achieve the same goal. They can seize objects by enveloping as well as pinching them, with a stable and secure grasp. No additional programming is required for the automatic system handling the gripper since all the intelligence, grasp selection and shape adaptation is realized mechanically by the fingers. The invention is tested under realistic conditions in several usage scenarios.

Advantage:
• Solid grip adapts to any shape of object
• Precise wrap-around and pinch grips
• Low cost and simple manufacture (passive components only)
• Easy transition for customers already using the gripper and jaw system
• No additional programming required
• Easily installed on any type of standard, translational or rotary gripper

 

COMPETITIVE ADVANTAGES

  • Versatility
  • Low-cost solution
  • Easy to implement
  • Potential of miniaturization

 

BUSINESS OPPORTUNITY

  • Technology available for licensing
  • Seeking industrial co-development partner

 

MARKET APPLICATIONS

  • Industrial automation
  • Robotics for the agriculture and food industry
  • Surgical robots or endoscopes

 

IP PROTECTION

 

PRINCIPAL INVESTIGATOR

Lionel Birglen

LEAD INVENTOR
Department of mechanical engineering
Polytechnique Montréal

Sébastien Bergeron

CONTACT
Operations Director, Transfer
sebastien.bergeron@axelys.ca