CN112240821A - Five quiet rigidity testing arrangement - Google Patents
Five quiet rigidity testing arrangement Download PDFInfo
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- CN112240821A CN112240821A CN202011238443.6A CN202011238443A CN112240821A CN 112240821 A CN112240821 A CN 112240821A CN 202011238443 A CN202011238443 A CN 202011238443A CN 112240821 A CN112240821 A CN 112240821A
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- loading arm
- structural part
- loading
- acts
- shearing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
- G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
Abstract
A five-axis static stiffness testing device is characterized in that five-axis loading is generated through computer motion control, bending, torsion, shearing and tension-compression deformation are carried out on a tested structure, deformation values of various testing points are obtained through a displacement sensor, and loads are measured through a force sensor. The device is simple, convenient and automatic to operate and suitable for high-precision static stiffness tests of various structures.
Description
The technical field is as follows:
the invention relates to a static stiffness test device, in particular to a five-axis static stiffness test device.
Background art:
many practical engineering structures need to be subjected to static rigidity tests, such as structural members on space satellites, numerical control machine tool spindles, ball screw guide rail pairs and the like. The common static stiffness test adopts a testing machine or a hydraulic jack for loading, the testing machine generally adopts one-way loading, bending, shearing, twisting and pulling-pressing in one or two directions are carried out at one time, the hydraulic jack can be simultaneously loaded by a plurality of hydraulic jacks, but the control precision and the operation performance are poor, and the testing machine or the hydraulic jack can not be used for realizing the pure shearing loading particularly.
The invention content is as follows:
the invention aims to provide a five-axis static stiffness testing device aiming at the defects of the prior art. The device adopts computer control to carry out multiaxis loading measurement, and measurement accuracy is high, and degree of automation is high, and is easy and simple to handle.
The technical scheme of the invention is as follows:
the computer controls the motion control card to carry out five-axis loading, the structure is bent, sheared, twisted and stretched and pressed to deform through five loading arms, the stress and deformation of each measuring point are measured through the force and displacement sensors, and the computer automatically processes the static rigidity test result.
The invention has the beneficial effects that: compared with the prior art, the automatic testing device for multi-axis loading based on the computer-controlled motion control card has the advantages of high measurement precision, high automation degree and simplicity and convenience in operation.
Description of the drawings:
fig. 1 is a schematic structural view of the present invention.
The labels in the figure are: the device comprises a tension and compression loading arm 1, a shear loading arm in the 2Y direction, a shear loading arm in the 3Z direction, a bending loading arm 4, a torsion loading arm 5, a tested structural member 6, a loading table top 7, a motion control card 8, a computer 9, a displacement sensor 10 and a force sensor 11.
The specific implementation mode is as follows:
as shown in FIG. 1, a five-axis static stiffness testing device. The device comprises a tension and compression loading arm 1, a 2Y-direction shearing loading arm, a 3Z-direction shearing loading arm, a 4 bending loading arm, a 5 torsion loading arm, a 6 tested structural member, a 7 loading table top, an 8 motion control card, a 9 computer, a 10 displacement sensor and an 11 force sensor.
The tested structural part 6 is fixed on the loading table top 7; the upper end of the X-direction tension and compression loading arm 1 is fixed on the frame of the table top 7, and the lower end of the X-direction tension and compression loading arm acts on the upper end of the structural part 6 to be measured; the Y-direction shearing loading arm 2 acts on the measured structural part 6 in the horizontal direction; the Z-direction shearing loading arm 3 acts on the measured structural part 6 in the horizontal direction; the bending loading arm 4 acts on the tested structural part 6 in the horizontal direction; the torsion loading arm 5 acts on the structural part 6 to be tested in the vertical direction; the computer 9 controls the tension and compression loading arm 1, the Y-direction shearing loading arm 2, the Z-direction shearing loading arm 3, the bending loading arm 4 and the torsion loading arm 5 through the motion control card 8; the force sensor 11 and the displacement sensor 10 are connected to the computer 9; and the computer 9 processes the rigidity test result of the tested structural part 6.
The five-axis static stiffness testing device has the working principle that: the motion control card drives the bending, shearing, twisting, tension and compression loading arms at different action points under the control of the computer, the bending, shearing, twisting and tension and compression sub-item static stiffness tests can be independently carried out according to measurement requirements, the bending, shearing, twisting and tension and compression static tests can also be simultaneously carried out, and test results of the force sensor and the displacement sensor are automatically stored in the computer.
Further, the present invention achieves pure shear loading by the bending loading arms 4 and the Z-direction shear loading arms 3, which is fully satisfied for structural members having precise stiffness test requirements.
Claims (2)
1. A five-axis static stiffness testing device is characterized in that: the tested structural part (6) is fixed on the loading table top (7); the upper end of the X-direction tension and compression loading arm (1) is fixed on the frame of the table top (7), and the lower end of the X-direction tension and compression loading arm acts on the upper end of the structural part (6) to be measured; the Y-direction shearing loading arm (2) acts on the measured structural part (6) in the horizontal direction; the Z-direction shearing loading arm (3) acts on the measured structural part (6) in the horizontal direction; the bending loading arm (4) acts on the measured structural part (6) in the horizontal direction; the torsion loading arm (5) acts on the structural part (6) to be tested in the vertical direction; the computer (9) controls the tension and compression loading arm (1), the Y-direction shearing loading arm (2), the Z-direction shearing loading arm (3), the bending loading arm (4) and the torsion loading arm (5) through a motion control card (8); the force sensor (11) and the displacement sensor (10) are connected to the computer (9); and (4) processing by the computer (9) to obtain a rigidity test result of the tested structural part (6).
2. The five-axis static stiffness testing device according to claim 1, characterized in that: pure shear loading is realized by the bending loading arm (4) and the Z-direction shear loading arm (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011238443.6A CN112240821A (en) | 2020-11-09 | 2020-11-09 | Five quiet rigidity testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011238443.6A CN112240821A (en) | 2020-11-09 | 2020-11-09 | Five quiet rigidity testing arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112240821A true CN112240821A (en) | 2021-01-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011238443.6A Pending CN112240821A (en) | 2020-11-09 | 2020-11-09 | Five quiet rigidity testing arrangement |
Country Status (1)
| Country | Link |
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| CN (1) | CN112240821A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113340737A (en) * | 2021-05-06 | 2021-09-03 | 上海卫星工程研究所 | Rigidity test equipment suitable for different structural members and test method thereof |
-
2020
- 2020-11-09 CN CN202011238443.6A patent/CN112240821A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113340737A (en) * | 2021-05-06 | 2021-09-03 | 上海卫星工程研究所 | Rigidity test equipment suitable for different structural members and test method thereof |
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