Three-dimensional force sensor capable of reducing coupling effect

Abstract

The utility model relates to the technical field of three-dimensional force sensors, in particular to a three-dimensional force sensor capable of reducing coupling effect, which comprises a stress acquisition plate, a first component and a second component. The first component is connected to the lower portion of the middle of the stress collecting plate, and the two second components are installed on the two sides of the bottom of the stress collecting plate respectively; the front end and the upper end of the first component are respectively provided with an X-axis stress sheet and a Z-axis stress sheet, the three-dimensional force sensor adopts a layered structure design, when the three-dimensional force sensor is stressed in different directions, the X-axis stress sheet element, the Y-axis stress sheet element and the Z-axis stress sheet element are physically isolated from each other in structure through the structural layout among the axes, and the stress of the X-axis stress sheet element, the Y-axis stress sheet element and the Z-axis stress sheet element is greatly improved. By means of the design, the cross coupling effect between the X axis, the Y axis and the Z axis is remarkably reduced, the measurement accuracy and reliability are improved, the anti-interference capacity of the sensor is enhanced, and the three-dimensional force sensor is suitable for various occasions needing high-precision three-dimensional force measurement.

Description

TECHNICAL FIELD

[0001] The utility model relates to three -dimensional force sensor technical field especially relates to a three -dimensional force sensor of coupling effect reduction. BACKGROUND

[0002] Three -dimensional force sensor is widely used in various industrial and scientific research fields, such as robot technology, biomechanics research, and precision manufacturing etc. The main function of these sensors is to measure and analyze the three -dimensional force (usually along X, Y, Z axis) acting on it to provide accurate force information. However, there is a common problem in the measurement process of existing three -dimensional force sensors: there is cross coupling effect between forces in different measurement directions.

[0003] This cross coupling effect means that when a force in one direction (for example X axis) acts on the sensor, it will unfairly affect the measurement results of other directions (such as Y axis and Z axis). This phenomenon greatly reduces the accuracy and reliability of force sensor measurement. In order to overcome this problem, existing technology usually needs to use complex software algorithms for decoupling processing. These algorithms not only increase the time and complexity of data processing, but also may introduce additional errors, thereby affecting the final measurement results.

[0004] Based on this, in order to reduce the cross coupling effect in the structure direction, we propose a three -dimensional force sensor of coupling effect reduction. SUMMARY

[0005] The utility model discloses a three -dimensional force sensor of coupling effect reduction to solve the shortcomings of the prior art that there is cross coupling effect between forces in different measurement directions.

[0006] In order to achieve the above object, the utility model adopts the following technical scheme:

[0007] A three -dimensional force sensor of coupling effect reduction is designed, including:

[0008] Stress collection board, first component and second component;

[0009] The first component is connected below the middle of the stress collection board, and the second component is provided with two and is installed on the bottom of the stress collection board two sides respectively;

[0010] Wherein, X axis stress sheet and Z axis stress sheet are respectively configured at the front end and the upper end of the first component, and Y axis stress sheet is configured on the outer side of the second component.

[0011] Further, the first component includes a plate body and a connecting portion formed at both ends of the plate body, and the connecting portion is connected with the stress collection board.

[0012] Further, the upper end of the connecting part is formed with a first positioning part, the first positioning part and the stress collecting plate are penetrated, and are fixed by a fastener.

[0013] Further, deformation grooves are arranged at the front end and the upper end of the plate body, and first mounting feet are further formed on the two sides of the plate body.

[0014] Further, the second member comprises a side plate and two second mounting feet which are vertically connected to the end face of the side plate, and the two second mounting feet and the side plate form an L-shaped structural member.

[0015] Further, a bending part is formed at the top of the side plate, a second positioning part is arranged at the upper end of the bending part, the second positioning part penetrates the stress collecting plate and is fixed by a fastener.

[0016] The three-dimensional force sensor with reduced coupling effect has the advantages that the three-dimensional force sensor has a layered structure, when forces are applied in different directions, the X, Y and Z axis stress sheet elements are physically isolated from each other in structure, the measurement of each axis is not affected by forces in other directions, the design significantly reduces the cross coupling effect between the X, Y and Z axes, improves the accuracy and reliability of measurement, enhances the anti-interference ability of the sensor, and is suitable for various occasions requiring high-precision three-dimensional force measurement. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 is a structural schematic view of the utility model;

[0018] Fig. 2 is a first member structural schematic view of the utility model;

[0019] Fig. 3 is a second member structural schematic view of the utility model.

[0020] In the drawing: 1, stress collecting plate; 2, first member; 201, plate body; 202, connecting part; 203, first positioning part; 204, deformation groove; 205, first mounting foot; 21, X axis stress sheet; 22, Z axis stress sheet; 3, second member; 301, side plate; 302, second mounting foot; 303, bending part; 304, second positioning part; 31, Y axis stress sheet. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0022] Referring to Figs. 1-3 For an embodiment of the utility model, it discloses a three -dimensional force sensor of coupling effect is reduced, specifically this three -dimensional force sensor including stress collection board 1, first component 2 and second component 3,

[0023] The first component 2 is connected below the middle of the stress collection board 1, and the second component 3 is provided with two and is installed at the bottom of the stress collection board 1 two sides respectively,

[0024] Wherein, the front end and the upper end of the first component 2 are respectively provided with X-axis stress sheet 21 and Z-axis stress sheet 22, the outer side of the second component 3 is provided with Y-axis stress sheet 31, of course, the mounting surface of X-axis stress sheet 21, Z-axis stress sheet 22 and Y-axis stress sheet 31 in the embodiment constitutes a space area, to be used for detecting the stress of X, Y, Z direction respectively, in addition, the stress sheet is prior art, and its specific principle is not described here.

[0025] In some embodiments, the first component 2 in the utility model includes plate body 201 and connecting portion 202 formed at both ends of the plate body 201, the connecting portion 202 in the embodiment is preferably set as rectangular portion, which is used to contact the lower side of the stress collection board 1, and the connecting portion 202 is connected with the stress collection board 1.

[0026] Optionally, the upper end of the connecting portion 202 in the embodiment is formed with first positioning portion 203, the first positioning portion 203 is threaded with the stress collection board 1 and is fixed by fastener, in a preferred embodiment, the first positioning portion 203 in the utility model is set as cylindrical with threaded hole, the fastener is bolt, of course, two hole positions should be provided at the upper end of the stress collection board 1, the first positioning portion 203 is inserted into the hole position and is locked and fixed by bolt.

[0027] Further, in order to ensure that the stress collection board 201 can produce deformation in the corresponding stress direction when stressed, to ensure that X-axis stress sheet 21 and Z-axis stress sheet 22 can smoothly respond to stress, the deformation groove 204 is penetrated and provided at the front end and the upper end of the plate body 201 in the embodiment, and the first mounting leg 205 is formed on both sides of the plate body 201.

[0028] In some embodiments, the second member 3 comprises a side plate 301 and two second mounting feet 302 vertically connected to the end face of the side plate 301, the two second mounting feet 302 and the side plate 301 form an L-shaped structural member, and in the embodiment, the two second members 3 are symmetrically distributed along the central axis of the stress collecting plate 1, and the second mounting feet 302 can be integrally formed with the side plate 301.

[0029] On the basis of the above-mentioned embodiments, in the embodiment, a bending portion 303 is formed at the top of the side plate 301, the upper end of the bending portion 303 is provided with a second positioning portion 304, the second positioning portion 304 penetrates the stress collecting plate 1 and is fixed by a fastener, and in the embodiment, the bending portion 303 and the side plate 301 are vertically arranged and are used to contact the lower bottom surface of the stress collecting plate 1, and in the embodiment, the second positioning portion 304 is preferably a character-shaped structural member, and of course, the fastener in the embodiment can also be a bolt.

[0030] In summary, the three-dimensional force sensor in the embodiment has the following advantages: by adopting the layered structure design, when forces are applied in different directions, the X, Y and Z axis stress sheet elements are physically isolated from each other in structure through the structural layout between the axes, so that the measurement of each axis is not affected by the force in other directions, the design significantly reduces the cross-coupling effect between the XYZ axes, improves the accuracy and reliability of the measurement, enhances the anti-interference ability of the sensor, and is suitable for various occasions requiring high-precision three-dimensional force measurement.

[0031] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A three-dimensional force sensor that reduces coupling effects, characterized in that Include: Stress collection plate (1), first component (2) and second component (3); The first component (2) is connected below the middle of the stress collection plate (1), and the second component (3) is provided with two and is respectively installed on both sides of the bottom of the stress collection plate (1); Wherein, X-axis stress sheet (21) and Z-axis stress sheet (22) are respectively arranged at the front end and the upper end of the first component (2), and Y-axis stress sheet (31) is arranged on the outer side of the second component (3).

2. A three-dimensional force sensor with reduced coupling effects according to claim 1, characterized in that: The first component (2) comprises a plate body (201) and a connecting portion (202) formed at both ends of the plate body (201), and the connecting portion (202) is connected with the stress collection plate (1).

3. A three-dimensional force sensor with reduced coupling effects according to claim 2, characterized in that: The upper end of the connecting portion (202) is formed with a first positioning portion (203), and the first positioning portion (203) is penetrated by the stress collection plate (1) and is fixed by a fastener.

4. The three-dimensional force sensor of claim 2, wherein: The front end and the upper end of the plate body (201) are both provided with a deformation groove (204), and the two sides of the plate body (201) are further formed with a first mounting foot (205).

5. The three-dimensional force sensor of claim 1, wherein: The second component (3) comprises a side plate (301) and two second mounting feet (302) vertically connected to the end face of the side plate (301), and the two second mounting feet (302) and the side plate (301) form an L-shaped structural member.

6. A three-dimensional force sensor with reduced coupling effects according to claim 5, characterized in that: A bending portion (303) is formed at the top of the side plate (301), the upper end of the bending portion (303) is provided with a second positioning portion (304), the second positioning portion (304) penetrates the stress collection plate (1) and is fixed by a fastener.

Images