CN112985729A - Multi-degree-of-freedom-based device and high-precision lamp vibration simulation system and method thereof - Google Patents
Multi-degree-of-freedom-based device and high-precision lamp vibration simulation system and method thereof Download PDFInfo
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- CN112985729A CN112985729A CN201911290082.7A CN201911290082A CN112985729A CN 112985729 A CN112985729 A CN 112985729A CN 201911290082 A CN201911290082 A CN 201911290082A CN 112985729 A CN112985729 A CN 112985729A
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- 238000004088 simulation Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 8
- 230000033001 locomotion Effects 0.000 claims abstract description 29
- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 238000009434 installation Methods 0.000 claims abstract description 22
- 230000001133 acceleration Effects 0.000 claims abstract description 7
- 238000013519 translation Methods 0.000 claims abstract description 3
- 238000012360 testing method Methods 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000013461 design Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims 3
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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
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/06—Multidirectional test stands
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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
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/08—Testing mechanical properties
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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
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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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
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/027—Specimen mounting arrangements, e.g. table head adapters
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Abstract
The invention discloses a vibration simulation system and method based on a multi-degree-of-freedom device and a high-precision lamp thereof, wherein the system comprises: the device comprises an installation base, a multi-degree-of-freedom movement mechanism and a clamping device, wherein the bottom of the installation base is connected with a vibration working platform, the top of the installation base is fixedly connected with a rack in the multi-degree-of-freedom movement mechanism through a bolt, the inner side of the installation base is matched with a sliding block in the multi-degree-of-freedom movement mechanism, an acceleration sensor is installed at the tail end of the multi-degree-of-freedom movement mechanism, the clamping device is fixedly connected with the floor of the installation base through a bolt, and. The invention realizes X, Y, Z direction translation and rotation of the coordinate system by controlling the multi-degree-of-freedom motion mechanism, can accurately simulate the installation angle of the lamp assembly after loading, and the acceleration sensor is used for detecting the resonance frequency of the invention. The invention can accurately simulate the mounting position and angle of the lamp after loading, and ensure the reliability of the invention.
Description
Technical Field
The invention relates to the field of automobile lamp detection, in particular to a multi-degree-of-freedom device and a high-precision lamp vibration simulation system and method thereof.
Background
The automobile lamp is an important component of an automobile, and the automobile lamp is used as an important part influencing driving safety, and the reliability requirement of the automobile lamp is higher and higher. The automobile lamp generates violent shaking and instant impact in the transportation and use processes, the lamp is subjected to vibration with different amplitudes, and the vibration can form great threats to the installation structural strength of the lamp and the assembly mode of internal parts of the lamp. Therefore, the vibration test of the automobile lamp is an extremely important item in lamp reliability test projects, and the vibration test is required to simulate and evaluate the installation structure strength of the automobile lamp and the reliability of the assembly mode of the internal parts of the lamp.
At present, the vibration test tool of the automobile lamp is inconvenient to disassemble and large in occupied space when stored; each lamp is provided with a corresponding vibration tool, the corresponding vibration test tool needs to be redeveloped when each project is made, and the lamp has high manufacturing cost, long period and no universality.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a multi-degree-of-freedom device and a high-precision lamp vibration simulation system and method thereof. The invention can realize the vibration simulation test of different types of automobile lamps, does not need to have a corresponding vibration tool for each lamp, and has wide applicability.
The invention provides a multi-degree-of-freedom device for high-precision lamp vibration simulation, which translates X, Y, Z and rotates along a movement shaft and comprises a straight-tooth rack, a straight-tooth gear, a straight-tooth motor rod, a motor, a straight-tooth gear, a shaft, a guide rod, a bracket, a nut slider, a support rod, a transmission screw rod and a motor, wherein the guide rod, the motor and the bracket are fixedly connected with the support rod; and the upper end of the linear motor rod (13) is in interference fit.
The invention discloses a high-precision lamp vibration simulation system based on a multi-degree-of-freedom device, which comprises: multiple freedom degree motion and clamping device, wherein:
the clamping device is used for clamping the tail end of a linear motor rod in the multi-axis freedom degree movement mechanism and comprises an adjusting block and a chuck, wherein the adjusting block is provided with 2 waist-shaped holes, a bolt can be connected with a threaded hole in the mounting base plate through the waist-shaped holes, and the adjusting block is also provided with four threaded inner holes; the chuck is opened there are 2 waist type holes, and the screw hole is connected on bolt accessible waist type hole and the adjusting block, chuck one side shape is the cockscomb structure for press from both sides tightly linear electric motor pole is terminal, ensures that linear electric motor pole has reliable stability.
Furthermore, a motor is installed in the linear motor sliding head and is in interference fit with the adapter, the adapter is fixedly connected with the motor, the motor is fixedly connected with the telescopic rod, the telescopic rod is fixedly connected with the fixed joint, and the acceleration sensor is installed on the fixed joint.
Furthermore, the vibration simulation system further comprises a mounting base which is a foundation of the whole vibration simulation system, wherein the mounting base comprises a mounting bottom plate, a slide rail cover plate, a mounting block and a right-angled triangular rib plate, the mounting bottom plate is connected with the mounting block through a bolt, the slide rail cover plate is connected with the mounting block through a bolt, and a right-angled surface of the right-angled triangular rib plate is respectively connected with the upper surface of the mounting bottom plate and the bottom surface of the mounting block through a bolt, so that the mounting base is a stable whole;
the mounting bottom plate and the mounting block are respectively provided with a counter bore and a threaded hole which correspond to each other and are used for connection;
a plurality of rows of through holes are formed in the periphery of the mounting bottom plate and are used for being connected with the mounting connecting platform so as to fix the whole vibration simulation system; the mounting bottom plate is provided with a plurality of rows of internal thread holes in the middle area of the mounting block and is used for being connected with the clamping device.
Furthermore, one side of the chuck in the clamping device is serrated, and the clamping stability can be ensured by the design structure.
Further, the type of the fixing joint may be selected according to the need.
The present invention proposes a vibration simulation method,
and 3, fixing the lamp assembly on a vibration test bed to perform a vibration test.
The invention provides a high-precision lamp vibration simulation system for solving the problems of repeated design, long development period, high cost and the like of a vibration tool for an automobile lamp assembly test. The test lamp is convenient to clamp in the invention, the mounting position and angle of the lamp after loading can be accurately simulated, and the reliability of the invention is ensured.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the mounting base of the present invention;
FIG. 3 is a schematic structural diagram of a multiple degree of freedom motion mechanism according to the present invention;
fig. 4 is a schematic structural view of the clamping device of the present invention.
Fig. 5 is a schematic structural view of a use state of the present invention.
In the figure: the device comprises a mounting base plate 1, a sliding rail cover plate 2, a mounting block 3, a right-angled triangular rib plate 4, a straight-tooth rack 5, a straight-tooth gear 6, a fixed joint 7, an acceleration sensor 8, a telescopic rod 9, a motor 10, a conversion joint 11, a linear motor sliding head 12, a linear motor rod 13, a motor 14, a straight-tooth gear 15, a shaft 16, a guide rod 17, a support 18, a nut sliding block 19, a support rod 20, a transmission screw rod 21, a motor 22, an adjusting block 23, a chuck 24 and a lamp assembly 25.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a high-precision lamp vibration simulation system according to the present invention, and as shown in fig. 1, the vibration simulation system includes: mounting base, multiaxis degree of freedom motion and clamping device, wherein:
fig. 2 is a schematic structural diagram of an installation base in the invention, as shown in fig. 2, the installation base is a foundation of the whole vibration simulation system, and the installation base comprises an installation bottom plate 1, a slide rail cover plate 2, an installation block 3 and a right-angled triangular rib plate 4, wherein the installation bottom plate 1 is connected with the installation block 3 through bolts, the slide rail 2 is connected with the installation block 3 through bolts, and right-angled surfaces of the right-angled triangular rib plate 4 are respectively connected with the upper surface of the installation bottom plate 1 and the bottom surface of the installation block 3 through bolts, so that the installation base becomes a stable whole;
holes for connecting external devices are formed in the mounting base plate 1 and the mounting block 3;
a plurality of rows of through holes are formed in the periphery of the mounting bottom plate 1 and are used for being connected with a mounting connecting platform so as to fix the whole vibration simulation system; the mounting base plate 1 is provided with an internal threaded hole in the middle of the mounting block 3 and is used for being connected with the clamping device;
fig. 3 is a schematic structural diagram of a multiple-degree-of-freedom motion mechanism in the present invention, as shown in fig. 3, the multiple-degree-of-freedom motion mechanism is configured to perform translation and rotation with different degrees of freedom along a motion axis, and includes a straight-tooth rack 5, a straight-tooth gear 6, a fixed joint 7, an acceleration sensor 8, an expansion link 9, a motor 10, a conversion joint 11, a linear motor slider 12, a linear motor rod 13, a motor 14, a straight-tooth gear 15, a shaft 16, a guide rod 17, a bracket 18, a nut slider 19, a support rod 20, a transmission screw 21, and a motor 22, wherein the straight-tooth rack 5 is mounted on the mounting block 3, the guide rod 17 is fixedly connected to the support rod 20, the motor 14 is fixedly connected to the support rod 20, the bracket 18 is fixedly connected to the support rod 20, the two straight-tooth gears 15 are respectively assembled with the motor 14 and the shaft 16, the, the shaft 16 is assembled with the straight-tooth gear 6, the transmission screw 21 is assembled with the support rod 20 through a bearing, the motor 22 is fixedly connected with the support rod 20, the motor 22 is connected with the transmission screw 21 through a key, a motor is installed in the nut slider 19 and is in interference assembly with the upper end of the straight-line motor rod 13, a motor is installed in the linear motor slider 12 and is in interference assembly with the conversion joint 11, the conversion joint 11 is fixedly connected with the motor 10, the motor 10 is fixedly connected with the telescopic rod 9, the telescopic rod 9 is fixedly connected with the fixed joint 7, and the acceleration sensor 8 is installed on the fixed joint 7;
fig. 4 is a schematic structural diagram of a clamping device according to the present invention, as shown in fig. 4, the clamping device is used for clamping the end of a linear motor rod 13 in the multi-axis degree-of-freedom movement mechanism, and comprises an adjusting block 23 and a chuck 24, wherein the adjusting block 23 is provided with 2 kidney-shaped holes, a bolt can be connected with a threaded hole on the mounting base plate 1 through the kidney-shaped holes, and the adjusting block 23 is further provided with four threaded inner holes; 2 kidney-shaped holes are formed in the chuck 24, a bolt can be connected with a threaded hole in the adjusting block 23 through the kidney-shaped holes, and one side of the chuck 24 is in a sawtooth shape and used for clamping the tail end of the linear motor rod 13 so as to ensure that the linear motor rod 13 has reliable stability;
upon installation of the vibration simulation system:
firstly, connecting a mounting bottom plate 1, a mounting block 3 and a right-angled triangular rib plate 4 of a mounting base into a whole through bolts;
then, assembling the multi-degree-of-freedom movement mechanism and the mounting base, and locking the slide rail cover plate 2 on the mounting block 3;
and finally, connecting the clamping device and the mounting base together through screws, wherein the clamping device clamps the tail end of a linear motor rod 13 in the multi-freedom-degree movement mechanism to form the vibration simulation system.
FIG. 5 is a schematic structural diagram of a use state of the present invention, as shown in FIG. 5, the present invention comprises a set of mounting base A, four sets of multi-axis freedom degree motion mechanisms B1, B2, B3, B4 and four sets of clamping devices C1, C2, C3 and C4, which are used in cooperation, when the present invention is used, according to the spatial coordinates of the lamp assembly 25 mounted on the automobile, the spatial coordinates of the fixed joints 7 in the multi-degree of freedom motion mechanisms B1, B2, B3 and B4 of the present invention are adjusted, so that the spatial coordinates of the fixed joints 7 in the multi-degree of freedom motion mechanisms B1, B2, B3 and B4 respectively correspond to the spatial coordinates of the lamp assembly 25 mounted on the automobile one-to-one, the lamp assembly 25 is placed at the fixed joints 7 in the multi-degree of freedom motion mechanisms B1, B2, B3 and B4, the lamp assembly 25 is fixedly connected with the fixed on the fixed joints 7 by bolts, and then the vibration test table is performed, the invention can well simulate the vibration working condition of the lamp assembly after loading.
The invention provides a high-precision lamp vibration simulation system for solving the problems of repeated design, long development period, high cost and the like of a vibration tool for an automobile lamp assembly test. The test lamp is convenient to clamp in the invention, the mounting position and angle of the lamp after loading can be accurately simulated, and the reliability of the invention is ensured.
Claims (7)
1. The utility model provides a multi freedom device of high accuracy lamps and lanterns vibration simulation which characterized in that: x, Y, Z translation and rotation are carried out along a movement shaft, the device comprises a straight-tooth rack (5), a straight-tooth gear (6), a linear motor rod (13), a motor (14), a straight-tooth gear (15), a shaft (16), a guide rod (17), a bracket (18), a nut slider (19), a support rod (20), a transmission screw rod (21) and a motor (22), wherein the guide rod (17), the motor (14) and the bracket (18) are fixedly connected with the support rod (20), the two straight-tooth gears (15) are respectively assembled with the motor (14) and the shaft (16), the bracket (18) is assembled with the shaft (16) through a bearing, the shaft (16) is assembled with the straight-tooth gear (6), the transmission screw rod (21) is assembled with the support rod (20) through a bearing, the motor (22) is fixedly connected with the support rod (20), and the motor (22) is connected with the transmission screw rod (21) through a key, a motor is arranged in the nut sliding block (19); and the upper end of the linear motor rod (13) is in interference fit.
2. A high-precision lamp vibration simulation system based on a multi-degree-of-freedom device is characterized by comprising: multiple freedom degree motion and clamping device, wherein:
the clamping device is used for clamping the tail end of a linear motor rod (13) in the multi-axis freedom degree movement mechanism and comprises an adjusting block (23) and a chuck (24), the adjusting block (23) is provided with 2 waist-shaped holes, a bolt can be connected with a threaded hole in the mounting base plate (1) through the waist-shaped holes, and the adjusting block (23) is also provided with four threaded inner holes; the clamp head (24) is provided with 2 waist-shaped holes, a bolt can be connected with a threaded hole in the adjusting block (23) through the waist-shaped holes, one side of the clamp head (24) is serrated and used for clamping the tail end of the linear motor rod (13), and the linear motor rod (13) is ensured to have reliable stability.
3. The multiple degree of freedom device based high-precision lamp vibration simulation system of claim 2, wherein: install the motor in linear electric motor slippery fellow (12), with crossover sub (11) interference fit, crossover sub (11) with motor (10) rigid coupling, motor (10) with telescopic link (9) rigid coupling, telescopic link (9) with fixed joint (7) rigid coupling, install acceleration sensor (8) on fixed joint (7).
4. The multiple degree of freedom device based high-precision lamp vibration simulation system of claim 2, wherein: the vibration simulation system is characterized by further comprising a mounting base which is a foundation of the whole vibration simulation system, wherein the mounting base comprises a mounting bottom plate (1), a sliding rail cover plate (2), a mounting block (3) and a right-angled triangle rib plate (4), the mounting bottom plate (1) is connected with the mounting block (3) through bolts, the sliding rail cover plate (2) is connected with the mounting block (3) through bolts, and right-angled surfaces of the right-angled triangle rib plate (4) are respectively connected with the upper surface of the mounting bottom plate (1) and the bottom surface of the mounting block (3) through bolts, so that the mounting base is a stable whole;
counter bores and threaded holes which correspond to each other are respectively arranged on the mounting base plate (1) and the mounting block (3) and are used for connection;
a plurality of rows of through holes are formed in the periphery of the mounting bottom plate (1) and are used for being connected with a mounting connecting platform so as to fix the whole vibration simulation system; the mounting bottom plate (1) is provided with a plurality of rows of internal thread holes in the middle area of the mounting block (3) and is used for being connected with the clamping device.
5. The high-precision lamp vibration simulation system based on the multi-degree-of-freedom device as recited in claim 2, wherein one side of the chuck (24) in the clamping device is serrated, and the design structure can ensure the stability of clamping.
6. The multiple degree of freedom device based high precision lamp vibration simulation system according to claim 1, characterized in that the type of the fixed joint (7) can be selected according to requirements.
7. A method of vibration simulation of a system as claimed in claim 2,
step 1, adjusting the space coordinate of a fixed joint (7) in a multi-degree-of-freedom motion mechanism according to the space coordinate of a lamp assembly installed on an automobile, so that the space coordinate position of the fixed joint (7) in the multi-degree-of-freedom motion mechanism corresponds to the space coordinate of an installation hole of the lamp assembly on the automobile one by one;
step 2, placing the lamp assembly at a fixed joint (7) in the multi-degree-of-freedom movement mechanism, and fixedly connecting the lamp assembly with the fixed joint (7) through a bolt;
and 3, fixing the lamp assembly on a vibration test bed to perform a vibration test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911290082.7A CN112985729A (en) | 2019-12-16 | 2019-12-16 | Multi-degree-of-freedom-based device and high-precision lamp vibration simulation system and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911290082.7A CN112985729A (en) | 2019-12-16 | 2019-12-16 | Multi-degree-of-freedom-based device and high-precision lamp vibration simulation system and method thereof |
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| CN112985729A true CN112985729A (en) | 2021-06-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114441136A (en) * | 2021-12-22 | 2022-05-06 | 武汉华迅捷检测设备技术有限公司 | Motor vehicle safety detection platform based on PLC acquisition control |
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| CN106768754A (en) * | 2016-11-25 | 2017-05-31 | 北京新能源汽车股份有限公司 | Vibration test fixture |
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| CN207779657U (en) * | 2018-01-15 | 2018-08-28 | 江苏新日电动车股份有限公司 | A kind of lamps and lanterns vibration-testing universal fixture |
| CN108507741A (en) * | 2018-07-10 | 2018-09-07 | 芜湖岭上信息科技有限公司 | A kind of car light testboard equipped with eccentric shaft type vibrator |
| CN208012833U (en) * | 2018-03-02 | 2018-10-26 | 浙江福林国润汽车零部件有限公司 | Front combination lamp vibration test fastening device |
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2019
- 2019-12-16 CN CN201911290082.7A patent/CN112985729A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103940563A (en) * | 2014-04-04 | 2014-07-23 | 同济大学 | Automobile instrument board framework modal test method and device |
| CN205246311U (en) * | 2015-11-30 | 2016-05-18 | 北京汽车研究总院有限公司 | Car headlight vibration test system assembly |
| CN206208482U (en) * | 2016-09-30 | 2017-05-31 | 武汉通畅汽车电子照明有限公司 | A kind of car light vibration test is with resonance frequency fixture high |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114441136A (en) * | 2021-12-22 | 2022-05-06 | 武汉华迅捷检测设备技术有限公司 | Motor vehicle safety detection platform based on PLC acquisition control |
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