Overload protection device for multi-axial force sensor

Abstract

The multi-axis force sensor overload protection device is characterized in that the upper and lower end covers are fixed on the end surface of the supporting platform of the elastic body, and the upper and lower end covers and the supporting platform are in the shape of a "worker"; The upper and lower end caps are respectively formed with axially limited limit bosses, and there is an axial limit gap δ 2 ; The limit pin fixed on the limit boss matches the radial clearance of the limit pin hole on the upper and lower end covers at the corresponding position, and the limit backlash δ 1 , the limit pin is parallel to the axis of the supporting platform. The device of the invention has simple structure and reliable operation, and does not affect the load range of the multi-axis force sensor under the linear working condition.

Description

Technical field: [0001] The invention relates to sensor technology, more specifically to an overload protection device for a multi-axis force sensor in the actual operation of a robot. Background technique: [0002] The overload protection of the multi-axis force sensor is directly related to the safety and practical application of the multi-axis force sensor, and has always been the focus of attention, but so far there is no better solution. The overload protection method of the multi-axis force transmitter produced by the American LOARD company is difficult to ensure the design accuracy. To ensure the reliability of the overload protection, the overload protection device itself will inevitably affect the load range of the multi-axis force sensor under normal linear working conditions. produce coupling interference. The SAFMS series multi-axis force sensor jointly developed by the Hefei Institute of Intelligence, Chinese Academy of Sciences, Southeast University and Harbin...

AI Technical Summary

Problems solved by technology

The overload protection method of the multi-axis force transmitter produced by the American LOARD company is difficult to ensure the design accuracy. To ensure the reliability of the overload protection, the overload protection device itself will inevitably affect the load range of the multi-axis force sensor under normal linear working conditions. produce coupling interference

The SAFMS series multi-axis force sensor jointly developed by the Hefei Institute of Intelligence, Chinese Academy of Sciences, Southeast University and Harbin Institute of Technology uses screws to achieve overload protection, but it is also difficult to ensure the gap accuracy and the strength and stiffness of the overload device. To ensure the overload protection Reliability, it is necessary to reduce the rated working load of the multi-axis force sensor, thus greatly limiting the use effect and application occasions of the multi-axis force sensor

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