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Related Experiment Video

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A Bioinspired Compliant 3D-Printed Soft Gripper.

Ali Zolfagharian1, Saleh Gharaie1, Jack Gregory1

  • 1School of Engineering, Deakin University, Geelong, Australia.

Soft Robotics
|July 23, 2021
PubMed
Summary
This summary is machine-generated.

This study presents a 3D-printed soft gripper inspired by spiral springs. This compliant gripper, using a single actuator, can safely handle delicate objects for medical and agricultural applications.

Keywords:
3D-printedbioinspiredcompliantnonassemblysoft robot

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Area of Science:

  • Robotics
  • Materials Science
  • Mechanical Engineering

Background:

  • Soft grippers offer advantages in handling delicate or irregularly shaped objects.
  • Bioinspired designs can lead to novel and effective robotic mechanisms.
  • 3D printing enables rapid prototyping and customization of complex geometries.

Purpose of the Study:

  • To design and fabricate a compliant soft gripper using a bioinspired spiral spring mechanism.
  • To develop analytical and finite element models for understanding gripper functionality.
  • To demonstrate the gripper's efficacy in handling delicate objects for potential medical and agricultural applications.

Main Methods:

  • Bioinspired design of a spiral spring mechanism for gripper actuation.
  • Three-dimensional (3D) printing of the soft gripper using thermoplastic filament.
  • Analytical and finite element analysis (FEA) for kinematic and dynamic modeling.
  • Experimental validation on a robot arm for picking and placing fruits.

Main Results:

  • Successful fabrication of a compliant, monolithic soft gripper.
  • Demonstration of sensorless manipulation with a single linear actuator.
  • Validation of the gripper's ability to pick and place fruits without damage.
  • Accurate kinematic and dynamic models predicting gripper behavior.

Conclusions:

  • The bioinspired 3D-printed soft gripper provides a compliant and effective solution for delicate object manipulation.
  • The sensorless design and single actuator make it suitable for cost-effective robotic systems.
  • The mechanism shows significant potential for customization and application in the medical and agricultural industries.