Load-sharing piezoelectric multi-dimensional force measuring device and method for manufacturing the same

Abstract

The invention discloses a load-sharing piezoelectric multi-dimensional force measuring device and a method for manufacturing the same, belongs to the field of piezoelectric sensors, and particularly relates to a testing device. The testing device is required for measuring force in three directions, and ranges of the force in the three directions are similar, and are of ten-thousand Newton classes. The method includes reasonably arranging a plurality of expansion pins on the periphery of a piezoelectric three-directional force sensor, and designing the expansion pins with different diameters so as to implement different load-sharing ratios; enabling the four expansion pins which are uniformly distributed to expand under actions of four taper pins so that a base can be tangentially and rigidly connected with an upper cover plate, and sharing load of force acting on the upper cover plate; and enabling the load-sharing ratios to be adjustable. The load-sharing piezoelectric multi-dimensional force measuring device comprises the base, the piezoelectric three-directional force sensor, the upper cover plate, the four expansion pins, the four taper pins, four set screws and a pre-tightening screw. The load-sharing piezoelectric multi-dimensional force measuring device and the method have the advantages that a testing application range of the piezoelectric multi-dimensional force measuring device is broadened by the method, and the load-sharing piezoelectric multi-dimensional force measuring device is wide in application space in fields of machining, aviation and aerospace.

Description

technical field [0001] The invention belongs to the field of piezoelectric sensors, and in particular relates to a test device that needs to measure forces in three directions, the forces in the three directions are similar in range, and the magnitude is at the level of 10,000 ox. Background technique [0002] In the general and traditional field of multi-dimensional force measurement, the range of force in three directions (Cartesian coordinate system) is generally at or below the kilonewton level, and the commonly used measurement methods are as follows: [0003] A. Strain-type multi-dimensional force measurement device based on strain gauge [0004] The strain gauge sensor is based on the physical property changes of specific materials during the deformation process, such as resistance, etc., and has the advantages of light weight, fast response, and small volume. Because the strain gauge has the characteristics of simple structure, flexible layout, high sensitivity, and...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to change the problem that the traditional piezoelectric multi-dimensional force measurement range cannot reach the 10,000-Nu level in two tangential directions, which leads to the problem that it cannot be applied in some occasions, and to invent a load-sharing piezoelectric Multidimensional force device and manufacturing method thereof

Images