CN207600754U - A kind of high-precision can centering automobile-used dent resistance testing equipment - Google Patents
A kind of high-precision can centering automobile-used dent resistance testing equipment Download PDFInfo
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- CN207600754U CN207600754U CN201721643543.0U CN201721643543U CN207600754U CN 207600754 U CN207600754 U CN 207600754U CN 201721643543 U CN201721643543 U CN 201721643543U CN 207600754 U CN207600754 U CN 207600754U
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- dent resistance
- centering
- testing equipment
- resistance testing
- transmission mechanism
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- 238000012360 testing method Methods 0.000 title claims abstract description 48
- 238000006073 displacement reaction Methods 0.000 claims abstract description 61
- 230000007246 mechanism Effects 0.000 claims abstract description 33
- 230000005540 biological transmission Effects 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims abstract description 4
- 239000003638 chemical reducing agent Substances 0.000 claims description 14
- 238000012546 transfer Methods 0.000 claims description 14
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 238000013519 translation Methods 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
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- 235000008434 ginseng Nutrition 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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Abstract
The utility model is related to automobile-used dent resistance technical field of test equipment more particularly to a kind of high-precision can centering automobile-used dent resistance testing equipment；Including rack, the frame upper end is equipped with mounting base, and linear displacement transmission mechanism is equipped in the mounting base；The driving end connection light centralising device of the linear displacement transmission mechanism, for carrying out normal direction loading centering to vehicle metal plate；The linear displacement transmission mechanism drives the smooth centralising device to do linear movement.High-precision disclosed in the utility model can centering automobile-used dent resistance testing equipment, by setting light centralising device, it is more prone to the normal direction loading that free form surface surface is realized in control, test accuracy is high, it avoids applying the problem of loading direction can only rely on testing crew naked-eye observation normal direction, cause test accuracy low.
Description
Technical field
The utility model is related to automobile-used dent resistance technical field of test equipment more particularly to a kind of high-precision can centering vehicle
With dent resistance testing equipment.
Background technology
With the development of automobile industry, the quality requirement of bodywork surface part is increasingly improved.Automobile research staff needs
Test the performances such as rigidity, the dent resistance of vehicle surface part to ensure that the car surface part that developed meets quality, no
It will appear because the problems such as car door generated when various contacts or shock loading is uneven is born on long-term use, surface.
The rigidity of test surfaces part, dent resistance need to use dent resistance testing equipment.Everybody uses currently on the market
Equipment generally existing problem：1. device simple but degree of freedom is inadequate；2. equipment can meet degree of freedom but not have curved surface pair
Middle ability, testing crew naked-eye observation normal direction can only be relied on by applying loading direction, cause test accuracy low；3. equipment volume is huge
Greatly, meet above-mentioned several requirements, there is this experiment process of electrical control.But due to the servo motor stepping in electrical control
It is long, it is unable to control and applies mounted mechanism load and unloading are applied to realize with the precision of micron level.Lead to not the examination for meeting ordinary test
Test precision.Such equipment widespread practice is to improve the load entirely tested, and expands measured piece sinking degree to cover precision not
Foot.Just there is dispute in such way, because in automobile in actual use, surface part will not relate to so big in itself
Load, experiment deviate with actual conditions, and result of the test is just without sufficient convincingness；4th, it is difficult to control and realizes free form surface surface
Normal direction loading.
Therefore, to solve the above-mentioned problems, be badly in need of inventing a kind of new high-precision can the automobile-used dent resistance experiment of centering set
It is standby.
Invention content
The purpose of this utility model is that：There is provided a kind of high-precision can centering automobile-used dent resistance testing equipment, Neng Goushi
Existing multiple degrees of freedom is adjusted, and is more prone to realize the normal direction loading on free form surface surface, and test accuracy is high.
The utility model provides following proposal：
A kind of high-precision can centering automobile-used dent resistance testing equipment, including rack, the frame upper end be equipped with mounting base,
Linear displacement transmission mechanism is installed in the mounting base；The driving end connection light centering dress of the linear displacement transmission mechanism
It puts, for carrying out normal direction loading centering to vehicle metal plate；The linear displacement transmission mechanism drives the smooth centralising device to do linearly
It is mobile.
Preferably, the linear displacement transmission mechanism bottom end is equipped with the first rotating connector, and the linear displacement transmits machine
Structure is in be rotatably connected with the mounting base by first rotating connector.
Preferably, first rotating connector includes the first rotary shaft and weight tray, and the linear displacement transmits machine
Structure is installed on the weight tray, and first rotary shaft is threaded onto in the mounting base and the weight tray, described to hold
Load floor is connected by first rotary shaft and the mounting base in left rotation and right rotation.
Preferably, the mounting base both ends are set up in by the second rotating connector in the rack, and with the rack
In being rotatably connected；The pivot center of first rotating connector and the pivot center of second rotating connector are perpendicular
Setting.
Preferably, second rotating connector includes being set to the second rotary shaft of the mounting base both sides and arc is led
To slot and the rotary steering bar being arranged in the rack, when the mounting base rotates, the mounting base is with described second
Shaft is in and is rotated up and down centered on rotary shaft；The rotary steering bar is slidably connected with the arc guide groove.
Preferably, the high-precision can the automobile-used dent resistance testing equipment of centering further include leading truck, the leading truck
The pivot center of central axis and first rotating connector be set in parallel；The leading truck includes being symmetricly set on institute
The guiding elongated slot of rack both sides is stated, second rotary shaft and the rotary steering bar are set in the guiding elongated slot, with institute
Guiding elongated slot is stated to be slidably connected, and pass through nut locking.
Preferably, the linear displacement transmission mechanism includes the ball screw framework being installed on the weight tray, institute
It states ball screw framework and includes leading screw pedestal and sliding block, the sliding block is equipped with transfer block, and the transfer block is consolidated with the sliding block
Fixed, the transfer block is equipped with force snesor, and one end of the force snesor is spirally connected with the transfer block, the force snesor
The other end is spirally connected with scroll chuck, and the smooth centralising device, the force snesor, the three-jaw are connected on the scroll chuck
Concentrically axis is set for chuck and the smooth centralising device；Reflector is equipped between the scroll chuck and the force snesor,
The reflector is connect by bolt with the scroll chuck and the force snesor respectively；The leading screw pedestal is equipped with displacement
Mounting frame for sensor, the displacement transducer mounting bracket are adjusted with the leading screw position base by bolt and connect；Institute
Be spirally connected the post rod type displacement sensor in displacement sensors mounting bracket, the mandril of the post rod type displacement sensor and institute
Reflective Board position is stated to be correspondingly arranged.
Preferably, the linear displacement transmission mechanism further includes the hand speed reducer being installed on the weight tray, institute
Hand speed reducer is stated to be correspondingly arranged with the ball screw framework position, and pass through shaft coupling and connect with the sliding block.
Preferably, the post rod type displacement sensor and the force snesor are electrically connected with data acquisition device.
Preferably, the base board of the rack is equipped with the adjusting elongated slot for adjusting with iron floor link position.
The advantageous effect that the utility model generates：
1st, high-precision disclosed in the utility model can centering automobile-used dent resistance testing equipment, by set light centering fill
It puts, is more prone to the normal direction loading that free form surface surface is realized in control, test accuracy is high, avoids application loading direction that from can only relying on
Testing crew naked-eye observation normal direction, the problem of causing test accuracy low；
2nd, by setting rotating connector and guide frame, the multiple degrees of freedom for realizing equipment is adjusted, and is more prone to realize
The normal direction loading on free form surface surface, meets experimental condition；
3rd, realize that control applies mounted mechanism and realizes that Shi Zaiyu is unloaded with the precision of micron level by linear displacement transmission mechanism
It carries, test accuracy is high；And equipment is simple, it is small.
Description of the drawings
Fig. 1 be the utility model high-precision can centering automobile-used dent resistance testing equipment structure diagram it is (three-dimensional
Figure)；
Fig. 2 be the utility model high-precision can centering automobile-used dent resistance testing equipment structure diagram (main view
Figure).
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model part of the embodiment, instead of all the embodiments.Based on the embodiment in the utility model, sheet
Field those of ordinary skill all other embodiments obtained without making creative work, belong to this practicality
Novel protected range.
In the description of the present invention, it should be noted that term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation of the instructions such as " level ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position relationship, are only
The utility model must have specific with the device or element for simplifying description rather than instruction or hint meaning for ease of description
Orientation, with specific azimuth configuration and operation, therefore it is not intended that limitation to the utility model.In addition, term " the
One ", " second ", " third " are only used for description purpose, and it is not intended that instruction or hint relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally
Connection；Can be mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, can above-mentioned art be understood with concrete condition
Concrete meaning of the language in the utility model.
Ginseng is seen figure 1 and figure 2, a kind of high-precision can centering automobile-used dent resistance testing equipment, it is described including rack 1
Frame upper end is equipped with mounting base 2, and linear displacement transmission mechanism is equipped in the mounting base；The linear displacement transmission mechanism
End connection light centralising device 14 is driven, for carrying out normal direction loading centering to vehicle metal plate；The linear displacement transmission mechanism driving
The smooth centralising device does linear movement.The linear displacement transmission mechanism bottom end is equipped with the first rotating connector, described linear
Displacement transmission mechanism is in be rotatably connected with the mounting base by first rotating connector.First rotating connector
Including the first rotary shaft 15 and weight tray 4, the linear displacement transmission mechanism is installed on the weight tray, and described first
Rotary shaft is threaded onto in the mounting base and the weight tray, and the weight tray passes through first rotary shaft and the peace
Seat is filled to connect in left rotation and right rotation.The mounting base both ends are set up in by the second rotating connector in the rack, and with it is described
Rack is in be rotatably connected；The pivot center of first rotating connector and the pivot center of second rotating connector are in
It is vertically arranged.Second rotating connector includes being set to the second rotary shaft 16 and arc guide groove of the mounting base both sides
17 and the rotary steering bar 3 that is arranged in the rack, when the mounting base rotates, the mounting base is with described second
Shaft is in and is rotated up and down centered on rotary shaft；The rotary steering bar is slidably connected with the arc guide groove.Described is high-precision
Degree can the automobile-used dent resistance testing equipment of centering further include leading truck, the central axis of the leading truck connects with the described first rotation
The pivot center of fitting is set in parallel；The leading truck includes the guiding elongated slot 18 for being symmetricly set on the rack both sides, institute
It states the second rotary shaft and the rotary steering bar is set in the guiding elongated slot, be slidably connected, and lead to the guiding elongated slot
Cross nut locking.The linear displacement transmission mechanism includes the ball screw framework 6 being installed on the weight tray, the rolling
Screw mechanism includes leading screw pedestal 19 and sliding block 20, and the sliding block is equipped with transfer block 10, the transfer block and the sliding block
Fixed, the transfer block is equipped with force snesor 11, and one end of the force snesor is spirally connected with the transfer block, the power sensing
The other end of device is spirally connected with scroll chuck 13, and the smooth centralising device, the force snesor, institute are connected on the scroll chuck
Stating scroll chuck and the smooth centralising device, concentrically axis is set；It is equipped between the scroll chuck and the force snesor anti-
Tabula rasa 12, the reflector are connect by bolt with the scroll chuck and the force snesor respectively；On the leading screw pedestal
Equipped with displacement transducer mounting bracket 8, the displacement transducer mounting bracket is adjustable by bolt and the leading screw position base
Section connection；Be spirally connected the post rod type displacement sensor 9 in the displacement transducer mounting bracket, the post rod type displacement sensor
Mandril be correspondingly arranged with the reflective Board position.The linear displacement transmission mechanism, which further includes, to be installed on the weight tray
Hand speed reducer 5, the hand speed reducer is correspondingly arranged with the ball screw framework position, and passes through shaft coupling 7 and institute
State sliding block connection.The post rod type displacement sensor and the force snesor are electrically connected with data acquisition device.For data
Harvester is known technology, does not represent in figure, be not repeated herein.The base board of the rack be equipped with for adjust with
The adjusting elongated slot 21 of iron floor link position.The smooth centralising device is laser pen；When it is implemented, the smooth centralising device is also
RF transmitter may be used.
Described in the present embodiment high-precision can centering automobile-used dent resistance testing equipment, by setting light centralising device, more
Add and be easy to control the normal direction loading for realizing free form surface surface, test accuracy is high, avoids application loading direction that from can only relying on experiment
Personnel's naked-eye observation normal direction, the problem of causing test accuracy low；By setting rotating connector and guide frame, realize and set
Standby multiple degrees of freedom is adjusted, and is more prone to realize the normal direction loading on free form surface surface, is met experimental condition；Pass through linear displacement
Transmission mechanism realizes that control applies mounted mechanism and applies load and unloading with the precision of micron level to realize, test accuracy is high；And equipment letter
It is single, it is small, it is easy to use, accurately curved surface normal orientation can be loaded and have required all degree of freedom.
Shown in Figure 1 in the present embodiment, as schemed, the adjusting elongated slot on the base board of the rack is used for for coordinate definition
Realize the translation of the translation, mainly coarse adjustment and Y-direction of X-direction；The mounting base is used to implement translation and the Y side of Z-direction
To rotation；The loading bottom plate, is used to implement the rotation of Z-direction；The linear displacement transmission mechanism, is used to implement X-direction
Translation, mainly fine adjustment.The post rod type displacement sensor：For measuring load deflection and unloading displacement；The power passes
Sensor：For measuring the size of loading force.
Rack described in the present embodiment is used to support the pedestal of a whole set of dent resistance equipment, can be by the long slot bore on pedestal
X on iron floor, it is translated in Y-direction.The mounting base is connected with rack, moves up and down achievable Z-direction translation, which is provided with second
Rotary shaft and arc guide groove are, it can be achieved that Y-axis rotates.The rotary steering bar is stud, by twisting after the mounting base rotation
Top nut allows mounting base to couple with rack fastening.The weight tray：It is provided for ball-screw, speed reducer on weight tray etc.
There are a circular through hole in firm banking, tail portion, are connected by bolt with mounting base.Z axis rotation can be achieved, treat that Z axis rotation has adjusted
The tooling can be fixed by tightening bolt with nut after finishing.The hand speed reducer：Ball screw framework is driven by hand speed reducer
Rotation, the precision to ensure load deflection select 1 herein：The speed reducer of 50 reduction ratio, under there is mounting hole to be connected with weight tray.
Ball screw framework：Dent resistance testing equipment provides the part of loading, which can drive thereon after being rotated by hand leading screw
Sliding block anterior-posterior translation, loading and unloading is realized with this.Under there is mounting hole to be connected with weight tray.Shaft coupling：It is responsible for connection hand
Speed reducer and ball-screw are shaken, realizes transmission.Displacement sensor pedestal：It is responsible for installation and supporting post-rod formula displacement sensor, with
Ball-screw pedestal is connected.Ball-screw pedestal has multiple mounting holes, can allow displacement sensor pedestal front and rear using without position
Installation meets a variety of using locational requirement.Displacement sensor：It is responsible for measuring loading and unloading displacement.Select a thimble-type position
Displacement sensor, since precision needs to select Japanese three rich micrometer LGK-542-158 model sensors, the transducer range herein
For 10mm, precision is up to 1um.The part is to realize the high-precision key component of dent resistance testing equipment with hand speed reducer.It should
Device is installed on displacement sensor pedestal.Transfer block：The sliding block and force snesor being responsible on switching ball-screw, this part and cunning
Block is bolted.Force snesor：It is responsible for measuring the force value size of loading and unloading, selects S-type force sensor herein.The sensor
Respectively there are one the threaded hole of M8, one end is connected by bolt with transfer block for rear and front end.Reflector：This plate has two effects.Its
First, displacement sensor is tested part, thus plate reacts translation distance.Secondly be responsible for accept laser it is reflective, help observer
Laser reflection position is observed to use.Scroll chuck：It is responsible for clamping pressure head and laser pen, this tooling is matured product in the market, is clamped
After can ensure high-precision coaxial degree, make loading direction become straight line.The part is passed by a studs and S types power
The sensor other end is connected, and centre clamps reflector across reflector together.
High-precision described in the present embodiment can the course of work of automobile-used dent resistance testing equipment of centering be：
Near mobile equipment to measured piece, rack is fixed on iron floor after preliminary range estimation centering.
Laser pen on scroll chuck will be installed, laser pen is opened and be pointed into tested curved surface.
Laser reflection position is observed, adjusting device allows laser reflection light to be overlapped with transmitting light, is then Surface Method at this time
To direction.
Fixed all degree of freedom.
It unclamps scroll chuck to unload laser pen, changes experiment pressure head.
Speed reducer is rotated, by movable press head to close to the position of measured piece.
Displacement sensor position base is adjusted, allows one position of displacement sensor elder generation precommpression, is ensured when loading later
Reflector moves forward, and distance does not exceed displacement sensor longest outreach.Sensor base is fixed later.
It shakes hand speed reducer and applies load, unload load.
The record record shift value X1 from force value is not 0, force value are suspended when reaching experiment predicted value F1, record position at this time
Move X2.Load is unloaded, record force value becomes shift value X3 when 0 again.
Calculate measured piece rigidity value K=F1/ (X2-X1)；Dent resistance is X3-X1.
Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, those of ordinary skill in the art should
Understand：It can still modify to the technical solution recorded in foregoing embodiments either to which part or whole
Technical characteristic carries out equivalent replacement；And these modifications or replacement, this practicality that it does not separate the essence of the corresponding technical solution are new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of high-precision can centering automobile-used dent resistance testing equipment, it is characterised in that：Including rack, the frame upper end is set
There is mounting base, linear displacement transmission mechanism is installed in the mounting base；The driving end connection of the linear displacement transmission mechanism
Light centralising device, for carrying out normal direction loading centering to vehicle metal plate；The linear displacement transmission mechanism driving smooth centering dress
It puts and does linear movement.
2. high-precision according to claim 1 can centering automobile-used dent resistance testing equipment, it is characterised in that：It is described linear
Displacement transmission mechanism bottom end is equipped with the first rotating connector, and the linear displacement transmission mechanism passes through first rotating connector
It is in be rotatably connected with the mounting base.
3. high-precision according to claim 2 can centering automobile-used dent resistance testing equipment, it is characterised in that：Described first
Rotating connector includes the first rotary shaft and weight tray, and the linear displacement transmission mechanism is installed on the weight tray,
First rotary shaft is threaded onto in the mounting base and the weight tray, and the weight tray passes through first rotary shaft
It is connected with the mounting base in left rotation and right rotation.
4. high-precision according to claim 2 can centering automobile-used dent resistance testing equipment, it is characterised in that：The installation
Seat both ends are set up in by the second rotating connector in the rack, and are in be rotatably connected with the rack；Described first turn
The pivot center of follower link and the pivot center of second rotating connector are vertical setting.
5. high-precision according to claim 4 can centering automobile-used dent resistance testing equipment, it is characterised in that：Described second
Rotating connector includes being set to the second rotary shaft of the mounting base both sides and arc guide groove and is arranged on the rack
On rotary steering bar, the rotary steering bar is slidably connected with the arc guide groove.
6. high-precision according to claim 5 can centering automobile-used dent resistance testing equipment, it is characterised in that：It further includes and leads
To frame, the central axis of the leading truck and the pivot center of first rotating connector are set in parallel；The leading truck
Guiding elongated slot including being symmetricly set on the rack both sides, second rotary shaft and the rotary steering bar are set to described
It is oriented in elongated slot, is slidably connected, and pass through nut locking with the guiding elongated slot.
7. high-precision according to claim 6 can centering automobile-used dent resistance testing equipment, it is characterised in that：It is described linear
Displacement transmission mechanism includes being installed on ball screw framework on weight tray, the ball screw framework include leading screw pedestal and
Sliding block, the sliding block are equipped with transfer block, and the transfer block is fixed with the sliding block, and the transfer block is equipped with force snesor,
One end of the force snesor is spirally connected with the transfer block, and the other end and the scroll chuck of the force snesor are spirally connected, and described three
The smooth centralising device is connected on dog chuck, the force snesor, the scroll chuck and the smooth centralising device are concentrically
Axis is set；Between the scroll chuck and the force snesor be equipped with reflector, the reflector by bolt respectively with institute
Scroll chuck is stated to connect with the force snesor；The leading screw pedestal is equipped with displacement transducer mounting bracket, and the displacement passes
Sensor mounting bracket is adjusted with the leading screw position base by bolt and connect；It is spirally connected in the displacement transducer mounting bracket
Post rod type displacement sensor, the mandril of the post rod type displacement sensor are correspondingly arranged with the reflective Board position.
8. high-precision according to claim 7 can centering automobile-used dent resistance testing equipment, it is characterised in that：It is described linear
Displacement transmission mechanism further includes the hand speed reducer being installed on the weight tray, the hand speed reducer and the ball wire
Thick stick mechanism position is correspondingly arranged, and is passed through shaft coupling and connect with the sliding block.
9. high-precision according to claim 8 can centering automobile-used dent resistance testing equipment, it is characterised in that：The mandril
Formula displacement sensor and the force snesor are electrically connected with data acquisition device.
10. high-precision according to claim 9 can centering automobile-used dent resistance testing equipment, it is characterised in that：The machine
The base board of frame is equipped with the adjusting elongated slot for adjusting with iron floor link position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721643543.0U CN207600754U (en) | 2017-11-30 | 2017-11-30 | A kind of high-precision can centering automobile-used dent resistance testing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721643543.0U CN207600754U (en) | 2017-11-30 | 2017-11-30 | A kind of high-precision can centering automobile-used dent resistance testing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207600754U true CN207600754U (en) | 2018-07-10 |
Family
ID=62761514
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721643543.0U Expired - Fee Related CN207600754U (en) | 2017-11-30 | 2017-11-30 | A kind of high-precision can centering automobile-used dent resistance testing equipment |
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| Country | Link |
|---|---|
| CN (1) | CN207600754U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107741330A (en) * | 2017-11-30 | 2018-02-27 | 北京长城华冠汽车技术开发有限公司 | A kind of high accuracy can centering automobile-used dent resistance testing equipment |
-
2017
- 2017-11-30 CN CN201721643543.0U patent/CN207600754U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107741330A (en) * | 2017-11-30 | 2018-02-27 | 北京长城华冠汽车技术开发有限公司 | A kind of high accuracy can centering automobile-used dent resistance testing equipment |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180710 |