ELECTRIC GRIP

The electric gripper achieves high precision and compact design by using an external rotor motor, series-connected brake, and a free-running gear to maintain torque without backlash, addressing performance and reliability issues while allowing energy-efficient operation.

DE102025155012A1Undetermined Publication Date: 2026-06-25CAMOZZI AUTOMATION SPA
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Patent Information

Authority / Receiving Office
DE · DE
Patent Type
Applications
Current Assignee / Owner
CAMOZZI AUTOMATION SPA
Filing Date
2025-12-23
Publication Date
2026-06-25

AI Technical Summary

Technical Problem

Existing electric grippers face challenges in achieving high performance, reliability, and compact dimensions while maintaining precise gripping and holding of workpieces, particularly when using an electric brake to block translational movement.

Method used

The electric gripper incorporates an external rotor electric motor, a gear drive with a series-connected electric brake, and a free-running connecting gear to minimize gear diameters, ensuring precise positioning and compact design, and allows energy-efficient operation by interrupting power to the motor when holding a workpiece.

Benefits of technology

The solution ensures high precision in holding workpieces, reduces gripper dimensions and weight, and enables energy-saving operation by maintaining torque without backlash, enhancing the gripper's reliability and maneuverability.

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Abstract

An electric gripper comprising a gripper body forming or supporting a jaw guide, at least one jaw which is translationally movable within the jaw guide between a gripping position and a release position, and an electric motor housed within the gripper body and operable to initiate the translational movement of the at least one jaw. A gear drive is suitable for transmitting the movement and torque of the electric motor to the at least one jaw.The gear transmission comprises a plurality of intermediate gear drives suitable for transmitting motion and torque from the motor shaft to an end shaft of the transmission, each intermediate gear drive being suitable for rotating about a corresponding gear drive shaft parallel to the motor shaft and the end shaft, and the intermediate gear drives being distributed side by side around the end shaft in such a way that they occupy a gear drive volume having a predominantly radial extent relative to the end shaft.
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