Rotating gripper

Rotary gripper with dual-motor independent gripping and rotation

This technology features a mechanical design that allows the gripper to grip and rotate objects independently, without requiring additional robot arm joints. It utilizes a dual-motor mechanism: a first motor drives a gripping shaft to move links linearly for grasping, while a second motor drives a rotation shaft to rotate the gripped object.

Conventional robots require the use of robot arm joints to rotate an object after gripping it, which limits the workspace, complicates the robot arm structure, and increases costs.

This technology arranges the gripping drive (first motor/shaft) and the rotation drive (second motor/shaft) side-by-side, using a ball spline and link structure to convert the motor's rotational motion into linear gripping movement and full-body rotation. By employing a gear transmission system, it minimizes slippage and enhances control precision. Applicable to manufacturing automation, assembly processes, and service robots, it enables object rotation without the need for robot arm joints, thereby reducing workspace requirements and structural complexity.

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Key Features:

• Gripping unit consisting of first and second gripping links for holding objects
• Gripping drive unit that moves the two gripping links in opposite directions along the longitudinal axis of the first rotation shaft
• Rotation drive unit that rotates the first and second gripping links in accordance with the rotation of the second rotation shaft
• Gripping movement unit that moves both gripping links in the same direction via a third rotation shaft extending from the first rotation shaft

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This invention was developed with support from the Ministry of Trade, Industry and Energy for the development of robot task control technology capable of gripping, manipulating, and using various objects in daily living environments based on multimodal perception.