CN107941526A - A kind of automobile instrument disc assembly abnormal sound detection device for assembly line - Google Patents
A kind of automobile instrument disc assembly abnormal sound detection device for assembly line Download PDFInfo
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- CN107941526A CN107941526A CN201711366154.2A CN201711366154A CN107941526A CN 107941526 A CN107941526 A CN 107941526A CN 201711366154 A CN201711366154 A CN 201711366154A CN 107941526 A CN107941526 A CN 107941526A
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- disc assembly
- sound detection
- automobile instrument
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- 238000001514 detection method Methods 0.000 title claims abstract description 36
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- 230000002950 deficient Effects 0.000 abstract description 3
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- 238000005259 measurement Methods 0.000 abstract 1
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Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The present invention discloses a kind of automobile instrument disc assembly abnormal sound detection device for assembly line, including the tool fixture for bearing automobile instrument disc assembly, the conveyer belt for tool fixture transport, vibration machine, jacking mechanism, the closed acoustic case for sound detection of the driving vibration machine vertical direction movement；The equipment is by digitizing means, accurate measurement automobile instrument disc assembly caused sound in the vibration values of each frequency, pass through the precise alignment of computer, it can find defective products, so as to achieve the purpose that detection screening, the equipment can be suitably used for modern plant flow line production, have higher and relatively stable efficiency.
Description
Technical field
The present invention relates to testing equipment field, and in particular to a kind of automobile instrument disc assembly abnormal sound for assembly line
Detection device.
Background technology
Figure one shows that the structure diagram of automobile instrument disc assembly, including instrument board bottom case 101, instrument 106, instrument refer to
Pin 105, circuit board 102, registration plate 103, panel cover 104.Ammeter, water-thermometer, hair are installed on traditional automobile instrument panel
One or more instrument physically such as motivation oil pressure gauge, fuel gauge, speedometer, engine speed indicator；Modern vapour
Car then with the addition of display of a series of digital display device as meter reading；The various instrument and device that the above is mentioned are main
It is fixed on by fastening means such as adhesive bonding, screw reinforcings on automobile instrument panel.In the process of moving, instrument board is or not automobile
It is evitable to be vibrated be subject to various frequencies, if instrument and device are fixed insecure or caused because stress is excessive when resonating
Loosen, the significant troubles such as instrument collision can be caused, therefore, it is necessary to carry out vibration detection to instrument board in the production phase.
At present, auto industry instrument panel vibrations test mainly by human ear judge instrument board vibrate when whether abnormal sound,
So as to judge whether instrument and device fasten, whether touched between each instrument and device.
Judging abnormal sound by human ear, there are many deficiencies：Abnormal sound judgment mode is subjective judgement, it is possible that judging
The situation of mistake, reinspection can increase workload；The sound of human ear catches to grab and is limited in scope, some should not human ear frequency reception range
Abnormal sound may be not easy to find；Manual work it is difficult to ensure that per subjob time it is identical, cause line tact disunity；Some
Unconspicuous fastening problems are not easy to check by ear detection, such as instrument board, some instrument fasten assembly not in place at certain
Resonate under one vibration frequency, if the vibration frequency is the frequency often reached in running car way, long-term work can cause
Instrument and device loosen aggravation inside instrument disc assembly.
Therefore, it is necessary to one kind to be suitable for flow line production, and the equipment that sound detection is accurate, sound detection frequency is wider carries out
The detection of automobile instrument disc assembly abnormal sound.
The content of the invention
In order to overcome described problem, the present invention provides a kind of automobile instrument disc assembly abnormal sound detection for assembly line and sets
Standby, which can be by digitizing means, and the accurate automobile instrument disc assembly that measures is caused by the vibration values of each frequency
Sound, passes through the precise alignment of computer, it is possible to find defective products, so as to achieve the purpose that detection screening, which can be suitably used for
Modern plant flow line production, has higher and relatively stable efficiency.
A kind of automobile instrument disc assembly abnormal sound detection device for assembly line provided by the invention, including for carrying vapour
The tool fixture of car instrument disc assembly, the conveyer belt for tool fixture transport, vibration machine, the driving vibration hair
Jacking mechanism, the closed acoustic case for sound detection of raw device vertical direction movement；The frock of the conveyer belt conveying thereon
On gauge to the vibration machine, the jacking mechanism jacks up the vibration machine, the tool fixture jacked up to
It is arranged in the acoustic case of top.
The automobile instrument disc assembly include instrument panel shell and be fixed on one or one of the instrument panel shell with
On Meter Parts；The instrument panel shell is fixed in tool fixture.
The jacking mechanism includes base, horizontally disposed top plate, the guide post being oriented to for vertical direction, hydraulic cylinder；Institute
State cylinder body to be fixed on the base, piston rod is connected with the top plate；The top plate is fixed in described guide post one end
On, the other end passes through the base.
The vibration machine includes the control of the vibration controller, the amplification vibration controller for controlling vibration frequency
The power amplifier of signal processed, the shake table for producing vibration；
The shake table includes vibrating base and table top, the vibrating base by be distributed with four connecting rods on apex angle with
The table top connection；
The vibrating base is installed on the top plate, is connected with power amplifier；Be provided with the table top with it is described
The vibrating sensor of vibration controller connection；
The power amplifier is connected with the vibration controller.
The table top is magnechuck.
The acoustic case include bottom surface open wide box-like casing of loudspeaker box, be attached to the casing of loudspeaker box inner wall sponge and with
The corresponding one or more microphone of metered quantity；The microphone fixed position is arranged on the tool fixture
Jacked to closed sidetone case, the surface of the instrument position.
The microphone is connected to the computer for audio analysis outside the acoustic case.
On the position of the non-instrument installation of casing of sound equipment, between the acoustic chamber interior wall and top plate, filled with sponge.
The bottom surface open surface match profiles of the top plate profile and the acoustic case are closed, and the hydraulic cylinder jacks shake table
Afterwards, the top plate periphery is bonded with the acoustic chamber interior wall.
The present invention is provided to the automobile instrument disc assembly abnormal sound detection device of assembly line, which can pass through digitlization
Means, it is accurate to measure automobile instrument disc assembly caused sound in the vibration values of each frequency, pass through the accurate ratio of computer
It is right, it is possible to find defective products, so as to achieve the purpose that detection screening, which can be suitably used for modern plant flow line production, have
There is higher and relatively stable efficiency.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 shows the three-dimensional structure explosive view of instrument board；
Fig. 2 shows the automobile instrument disc assembly abnormal sound detection device graphics for assembly line of the present embodiment；
Fig. 3 shows the front view of the present embodiment jacking mechanism；
Fig. 4 shows the connection diagram of the present embodiment vibration machine；
Fig. 5 shows the shake table schematic diagram of the present embodiment；
Fig. 6 shows the automobile instrument disc assembly abnormal sound detection device half sectional view for assembly line of the present embodiment.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained all other without creative efforts
Embodiment, belongs to the scope of protection of the invention.
Fig. 1 shows the three dimensional structure diagram of instrument board, and instrument board head cover 104 is fixed by snap with instrument board bottom case
On 101, the embodiment of the present invention is detected mainly for the instrument disc assembly for not installing instrument board head cover 104.
Embodiment one：
Fig. 2 shows the automobile instrument disc assembly abnormal sound detection device graphics for assembly line of the present embodiment.This hair
Bright embodiment provides a kind of automobile instrument disc assembly abnormal sound detection device for assembly line, including for bearing automobile instrument board
The tool fixture 202 of assembly 207, for the tool fixture transport conveyer belt 201, vibration machine 203, driving described in shake
Jacking mechanism 204, the closed acoustic case 205 for sound detection of dynamic generator vertical direction movement.
The conveyer belt 201 of the embodiment of the present invention is drum-type conveyer belt, and tool fixture 202 is rectangular flat, tool fixture
Instrument disc assembly is fixed with 202.
Tool fixture 202 is delivered on vibration machine 203 by conveyer belt 201, and vibration is reached in tool fixture 202
Before device 203, positioned by the guide pad 206 for being arranged in both ends above roller.
After the tool fixture 202 is transported on vibration machine 203, jacking mechanism 204 jacks up tool fixture 202
Into closed sidetone case 205, acoustic process is performed.
Embodiment two：
Fig. 3 shows the front view of the present embodiment jacking mechanism.The jacking mechanism of jacking mechanism include base 301,
Horizontally disposed top plate 303, the guide post 302 being oriented to for vertical direction, hydraulic cylinder 304；304 body of hydraulic cylinder is fixed on
On the base, piston rod is connected with the top plate 303；Described 302 one end of guide post is fixed on the top plate 303, the other end
Through the base 301；In order to limit the height jacked up upwards, stop nut 305 has been added in the lower end of guide post 302；Due to
Base 301 and top plate 303 are rectangle, and adjacent edge lengths are unequal, in order to avoid producing mistake, four guide posts on direction during installation
302 installation site is asymmetric.
Embodiment three：
Fig. 4 shows the connection diagram of the present embodiment vibration machine.The vibration machine includes shaking for control
The vibration controller 401 of dynamic frequency, the amplification vibration controller control signal power amplifier 402, shake for producing
Dynamic vibration machine；The vibration controller 401 of practicality of the embodiment of the present invention is computer；Due to vibration controller 401 and work(
Rate amplifier 402 is installed on outside assembly line, therefore, is not drawn in Fig. 1.
The vibration machine includes vibrating base 404 and table top 403, and the vibrating base 404 passes through distribution and apex angle
On four connecting rods 406 be connected with the table top 403；
The vibrating base 404 is installed on the top plate, is connected with power amplifier；It is provided with the table top and institute
State the vibrating sensor 405 of the connection of vibration controller 401；
The power amplifier 402 is connected with the vibration controller 401.
Fig. 5 shows the shake table schematic diagram of the present embodiment.Table top 403 is integrally connected with connecting rod 406, and connecting rod 406 gos deep into
In the air gap of vibrating base 404；Connecting rod 406, which is stretched on one end in the air gap, is provided with driving coil 501, between air
For gap surrounding to have magnetic permanent magnet 502, permanent magnet 502 produces the magnetic field 503 of fixation；When the side for changing driving coil 501
Xiang Shi, that is, change the direction of the power suffered by driving coil 501；When the current direction of driving coil 501 is with the change of certain frequency
When changing speed change, you can driving table top 403 produces the vibration of certain frequency.
Example IV：
When being vibrated in view of shake table, it may result in tool fixture and move on a vibration table, therefore, it is necessary to work
Dress gauge is fixed.Fixed form is magnetic-type fixed form used by the present embodiment, and the table top is provided with an electricity
Magnetic-disc 504, by the power on/off for controlling magnechuck 504, it is possible to achieve the fixation and release of tool fixture.
Embodiment five：
Fig. 6 shows the automobile instrument disc assembly abnormal sound detection device half sectional view for assembly line of the present embodiment；Institute
State acoustic case include bottom surface open wide box-like casing of loudspeaker box 600, be attached to the casing of loudspeaker box inner wall sponge 601 and with it is described
The corresponding one or more microphone 602 of metered quantity；Controlled arranged on the frock 602 fixed position of microphone
Tool is jacked to closed sidetone case, the surface of the instrument position.
The microphone 602 is connected to the computer for audio analysis outside the acoustic case.
On the position of the non-instrument installation of casing of sound equipment, between the acoustic chamber interior wall and top plate, filled with sponge
601。
The bottom surface open surface match profiles of 303 profile of top plate and the casing of loudspeaker box 600 are closed, the hydraulic cylinder 304
After shake table is jacked, 303 periphery of top plate is bonded with the acoustic chamber interior wall.
In actual motion, automobile instrument assembly 207 is initially secured in tool fixture 202, then with 202 quilt of tool fixture
On the transport of conveyer belt 201 to the table top 403 positioned at the shake table at 201 rear of conveyer belt, the magnechuck on vibration table surface 403
504 start, and tool fixture 202 is sucked；At this time, hydraulic cylinder 304 starts, and shake table is integrally jacked up into acoustic case, wherein,
303 periphery of top plate is bonded closed, one closed inner cavity of composition with surveying 600 inner wall of casing of loudspeaker box；In automobile instrument assembly 207 4
It is filled with sound-absorbing sponge week, wherein, cavity is equipped with above the position that instrument is fixed, microphone 602 is installed on cavity.
Then, vibration controller start send vibration signal to power amplifier, power amplifier vibration signal is amplified
Afterwards driving vibrating base 404 vibration takes place, by vibrating sensor 405 detection vibration frequency, test frequency from 10Hz~
2000Hz is gradually changed；In vibration frequency change procedure, each microphone 602 can record sound frequency data to computer
On, the voice data of each microphone 602 is analyzed by computer；When finding that some microphone 602 catches the voice data grabbed
It is inconsistent with standard frequency spectrum, or not in critical field, that is, show the instrument corresponding to the microphone 602 there may be fixation not
Situation in place, should reexamine；Testing time on resonant frequency should accordingly lengthen, to test resonant frequency to instrument pine
It is dynamic whether to impact；
After above step, hydraulic cylinder 304 drives shake table to decline, and one-off is completed.
Automobile instrument disc assembly abnormal sound detection device provided in an embodiment of the present invention for assembly line, is surveyed by computer
Sound, ensures the reliability and accuracy of test result, and does corresponding automatic improving to acoustic mechanism, is given birth to suitable for assembly line
Production, is conducive to accelerate production efficiency, reduces cost of labor.
The automobile instrument disc assembly abnormal sound detection device for assembly line provided above the embodiment of the present invention carries out
It is discussed in detail, specific case used herein is set forth the principle of the present invention and embodiment, above example
Explanation be only intended to help understand the present invention method and its core concept；Meanwhile for those of ordinary skill in the art,
According to the thought of the present invention, there will be changes in specific embodiments and applications, in conclusion in this specification
Appearance should not be construed as limiting the invention.
Claims (9)
1. a kind of automobile instrument disc assembly abnormal sound detection device for assembly line, it is characterised in that including for bearing automobile
The tool fixture of instrument disc assembly, the conveyer belt for tool fixture transport, vibration machine, the driving vibration occur
Jacking mechanism, the closed acoustic case for sound detection of device vertical direction movement；The frock of the conveyer belt conveying thereon is controlled
On tool to the vibration machine, the jacking mechanism jacks up the vibration machine, and the tool fixture is jacked up to cloth
It is placed in the acoustic case of top.
2. it is used for the automobile instrument disc assembly abnormal sound detection device of assembly line as claimed in claim 1, it is characterised in that described
Automobile instrument disc assembly includes instrument panel shell and is fixed on the one or more Meter Parts of the instrument panel shell；
The instrument panel shell is fixed in tool fixture.
3. it is used for the automobile instrument disc assembly abnormal sound detection device of assembly line as claimed in claim 2, it is characterised in that described
Jacking mechanism includes base, horizontally disposed top plate, the guide post being oriented to for vertical direction, hydraulic cylinder；The cylinder body
It is fixed on the base, piston rod is connected with the top plate；Described guide post one end is fixed on the top plate, and the other end passes through
The base.
4. it is used for the automobile instrument disc assembly abnormal sound detection device of assembly line as claimed in claim 3, it is characterised in that described
Vibration machine includes vibration controller, the power of the control signal of the amplification vibration controller for controlling vibration frequency
Amplifier, the shake table for producing vibration；
The shake table includes vibrating base and table top, the vibrating base by distribution and four connecting rods on apex angle with it is described
Table top connects；
The vibrating base is installed on the top plate, is connected with power amplifier；It is provided with the table top and the vibration
The vibrating sensor of controller connection；
The power amplifier is connected with the vibration controller.
5. it is used for the automobile instrument disc assembly abnormal sound detection device of assembly line as claimed in claim 4, it is characterised in that described
Table top is magnechuck.
6. it is used for the automobile instrument disc assembly abnormal sound detection device of assembly line as claimed in claim 5, it is characterised in that described
Acoustic case include bottom surface open wide box-like casing of loudspeaker box, be attached to the casing of loudspeaker box inner wall sponge and with the metered quantity
Corresponding one or more microphone；The microphone fixed position is jacked to closed arranged on the tool fixture
After sidetone case, the surface of the instrument position.
7. it is used for the automobile instrument disc assembly abnormal sound detection device of assembly line as claimed in claim 6, it is characterised in that described
Microphone is connected to the computer for audio analysis outside the acoustic case.
8. the automobile instrument disc assembly abnormal sound detection device for assembly line as described in right wants 7, it is characterised in that the sound
On the position for ringing the non-instrument installation of shell, between the acoustic chamber interior wall and top plate, filled with sponge.
9. it is used for the automobile instrument disc assembly abnormal sound detection device of assembly line as claimed in claim 8, it is characterised in that described
Top plate profile and the bottom surface open surface match profiles of the acoustic case are closed, after the hydraulic cylinder jacks shake table, the top plate
Periphery is bonded with the acoustic chamber interior wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711366154.2A CN107941526B (en) | 2017-12-18 | 2017-12-18 | Abnormal sound detection equipment for automobile instrument panel assembly of assembly line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711366154.2A CN107941526B (en) | 2017-12-18 | 2017-12-18 | Abnormal sound detection equipment for automobile instrument panel assembly of assembly line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107941526A true CN107941526A (en) | 2018-04-20 |
| CN107941526B CN107941526B (en) | 2023-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711366154.2A Active CN107941526B (en) | 2017-12-18 | 2017-12-18 | Abnormal sound detection equipment for automobile instrument panel assembly of assembly line |
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| Country | Link |
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| CN (1) | CN107941526B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110181436A (en) * | 2019-06-18 | 2019-08-30 | 广州准尚测控技术有限公司 | Automobile tool fixture |
| CN113483884A (en) * | 2021-06-21 | 2021-10-08 | 深圳市优瑞特检测技术有限公司 | Vibration abnormal sound testing device for package detection and detection method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110181436A (en) * | 2019-06-18 | 2019-08-30 | 广州准尚测控技术有限公司 | Automobile tool fixture |
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| CN113483884A (en) * | 2021-06-21 | 2021-10-08 | 深圳市优瑞特检测技术有限公司 | Vibration abnormal sound testing device for package detection and detection method thereof |
| CN113483884B (en) * | 2021-06-21 | 2023-09-26 | 深圳市优瑞特检测技术有限公司 | Vibration abnormal sound testing device for package detection and detection method thereof |
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