Optimization-Driven Design of Monolithic Soft-Rigid Grippers

TL;DR

This paper presents an optimization-driven approach combining rapid prototyping and simulation to improve the design process of soft-rigid grippers, reducing prototypes needed and enhancing manufacturing feasibility.

Contribution

It introduces a novel methodology that integrates advanced rapid prototyping with an optimization framework to streamline soft robotic gripper design and address sim-to-real transfer challenges.

Findings

Reduced number of prototypes needed for design validation

Improved alignment between simulated and real-world performance

Enhanced manufacturability of compliant components

Abstract

Sim-to-real transfer remains a significant challenge in soft robotics due to the unpredictability introduced by common manufacturing processes such as 3D printing and molding. These processes often result in deviations from simulated designs, requiring multiple prototypes before achieving a functional system. In this study, we propose a novel methodology to address these limitations by combining advanced rapid prototyping techniques and an efficient optimization strategy. Firstly, we employ rapid prototyping methods typically used for rigid structures, leveraging their precision to fabricate compliant components with reduced manufacturing errors. Secondly, our optimization framework minimizes the need for extensive prototyping, significantly reducing the iterative design process. The methodology enables the identification of stiffness parameters that are more practical and achievable within current manufacturing capabilities. The proposed approach demonstrates a substantial improvement in the efficiency of prototype development while maintaining the desired performance characteristics. This work represents a step forward in bridging the sim-to-real gap in soft robotics, paving the way towards a faster and more reliable deployment of soft robotic systems.