Pulling and pressing both-way decoupling and parallel connecting three-dimensional force sensor

Abstract

The invention discloses a pulling and pressing both-way decoupling and parallel connecting three-dimensional force sensor. A loading plate is arranged on an outer frame and provided with three nuts with the center connecting lines forming a regular triangle. The lower ends of supporting studs meshed with the nuts are connected with a force measuring plate. Three horizontal adjusting bolts are arranged on the side face of the force measuring plate, wherein the included angle formed by the corresponding center lines of the horizontal adjusting bolts is 120 degrees. The bolt heads of the bolts are located outside the outer frame. The force measuring plate is further provided with three vertical adjusting bolts with the center connecting lines forming a regular triangle, and the lower ends of the vertical adjusting bolts are located on a bottom plate of the outer frame. Four force measuring branch chains are arranged between the force measuring plate and the outer frame, the structures of the three horizontal force measuring branch chains on the side face of the force measuring plate are the same, the center lines of the three horizontal force measuring branch chains on the side face of the force measuring plate are located on the same horizontal plane and intersect with one another at one point of the force measuring plate, the 120-degree included angle is formed by the corresponding center lines of the three horizontal force measuring branch chains and vertical force measuring branch chains are arranged below the force measuring plate, wherein the center lines of the vertical force measuring branch chains are perpendicular to the center lines of the three horizontal force measuring branch chains and pass through the intersections of the center lines of the three horizontal force measuring branch chains. The pulling and pressing both-way decoupling and parallel connecting three-dimensional force sensor is small in inter-dimensionality coupling, high in measuring precision, simple and compact in structure and convenient to assemble and adjust, and the both-way decoupling measurement on the three-dimensional pulling and pressing force can be achieved easily.

Description

technical field [0001] The invention relates to a multidimensional force sensor. Background technique [0002] The key to the development of a multi-dimensional force sensor is the structural design of the force-sensitive element. For this reason, some implementation schemes have been proposed. For example, the patent ZL93224329.0 discloses a six-dimensional force sensor with a cross-beam structure, which adopts an integrated structure and has High rigidity, compact structure and other advantages. Patent ZL200810025591.2 discloses an orthogonal series linear elastic body type six-dimensional force sensor structure, which has the advantages of simple structure and easy miniaturization, but the sensor structure has a certain degree of inter-dimensional coupling. Inter-dimensional coupling is a common phenomenon when multi-dimensional load cells measure multi-dimensional force, which seriously affects the measurement accuracy of the sensor. At present, the commonly used three...

AI Technical Summary

Problems solved by technology

Coupling between dimensions is a common phenomenon when multi-dimensional force sensors measure multi-dimensional force, which seriously affects the measurement accuracy of the sensor

At present, the commonly used three-dimensional force sensors are made by adding multiple groups of patches on the basis of single-dimensional force sensors, and most of them have inter-dimensional coupling phenomena. Therefore, in order to achieve the purpose of accurate measurement, complex decoupling techniques are required to To reduce the inter-dimensional coupling error, the current inter-dimensional decoupling problem has become the key and bottleneck of the development of multi-dimensional force sensor technology

Patent ZL200810019550.2 discloses an air-floating multi-dimensional force sensor and multi-dimensional force measurement method. The sensor can realize decoupling measurement in principle, but it needs to be based on the difficult to achieve precise control of gas

Patent ZL201210117654.3 discloses a three-dimensional force sensor composed of one-dimensional force sensors, which uses steel ball decoupling to achieve decoupling measurement of compressive force, but cannot achieve decoupling measurement of tensile force

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