CN109539932A - A kind of subframe examines positioning device and method - Google Patents
A kind of subframe examines positioning device and method Download PDFInfo
- Publication number
- CN109539932A CN109539932A CN201811428368.2A CN201811428368A CN109539932A CN 109539932 A CN109539932 A CN 109539932A CN 201811428368 A CN201811428368 A CN 201811428368A CN 109539932 A CN109539932 A CN 109539932A
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- Prior art keywords
- subframe
- mounting hole
- pedestal
- left front
- left back
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0025—Measuring of vehicle parts
Abstract
The present invention relates to a kind of subframes to examine positioning device and method, including pedestal, and the left front support, right anterior branch seat, left back support and the right rear support that are set on pedestal.The technical program passes through left front support, right anterior branch seat, left back support and right rear support be bonded with the datum target of subframe to be formed fit datum plane limit subframe Z-direction it is mobile, X-axis rotation and Y-axis rotate three degree of freedom, two freedom degrees are moved to mobile and Y-axis from the X of the cylindrical surface of master positioning pin limitation subframe, one degree of freedom is rotated by the arc surface limitation Z axis of rhombus pin, it completes the limitation of 6 freedom degrees of subframe and examines positioning, it can guarantee that each benchmark of cubing will not generate positioning and Planar Mechanisms when limiting the freedom degree of subframe, it is convenient that simple operations are set, detection efficiency is high.
Description
Technical field
The invention belongs to vehicle manufacturing technology field, particularly relates to a kind of subframe and examine positioning device and method.
Background technique
The fore sub frame load bearing component important as automobile front axle, it is upper connection vehicle body and vehicle front axle load, under
Connection and suspension, wheel, stationary deflector.Its geometric dimension, precision and intensity are to the safety of vehicle, reliability and vehicle
Performance influences very big.
The precision of subframe not only influences vehicle performance, but also is directly related to the installation of subframe and vehicle body, has an effect on
The assembly of diverter, suspension swing arm and subframe, therefore the precision of subframe is of crucial importance, when mass production, must pass through inspection
Tool is quickly and accurately detected.
Cubing is the positioning for Complex Automobile Parts and the special equipment for examining size and geometric tolerances everywhere, cubing
Production efficiency and control quality can be improved, suitable for the product that auto parts and components are produced in enormous quantities in this way, with substitution profession measurement
Tool, such as slide calliper rule, plug thread gauge, caliber gauge, and each spy for the components that can examine professional measuring tool that cannot examine
Correlation between sign.
Since subframe welding structure is complicated, shape face is irregular, cubing must be able to judge be between each body of subframe
It is no to meet design requirement, the dimensional tolerance and geometric tolerances of each body of subframe are examined, so the setting of cubing positioning datum
It is directly related to the quality of subframe.Any measuring tool requires measuring basis, and the cubing of subframe must be wanted according to drawing
Ask, reasonable cubing benchmark be set come positioning of testing, only in this way just can guarantee the precision of cubing, and with layout design base
It is quasi- consistent, guarantee the quality of the subframe of design.
The cubing of subframe is to guarantee the key tool of product quality, will the correct selected reference mesh on curved surface in design
Mark, then determination can place the datum level of subframe and hole benchmark limits 6 freedom degrees of subframe together, and guarantee to examine
Each benchmark of tool will not generate positioning, Planar Mechanisms when limiting the freedom degree of subframe, just can guarantee the essence of cubing in this way
Whether degree, the manufacture for the subframe that can just correctly judge meet design requirement.
Being used to fix 4 mounting holes of subframe on subframe is crucial hole location, the size and geometric tolerances of allothimorph
All with respect to this four holes.
Summary of the invention
The object of the present invention is to provide a kind of subframes to examine positioning device and method, is surveyed with solving the profession of the prior art
Amount tool cannot detect the problem of correlation between each feature of components.
The present invention is achieved by the following technical solutions:
A kind of subframe examines positioning device, including pedestal, and be set on the pedestal left front support, right anterior branch
Seat, left back support and right rear support；
Mounting hole before the right side of the cooperation of the left front mounting hole of the left front support and subframe, the right anterior branch seat and subframe
The left back mounting hole of cooperation, the left back support and subframe cooperates, and mounting hole is matched behind the right side of the right rear support and subframe
It closes；
The left front support includes left front pedestal, rhombus pin and with interior string side bushing；String side bushing is set in the band
In the diamond shape pin jack of the upper surface of the left front pedestal, string side bushing in the movable insertion band of rhombus pin；
The right anterior branch seat includes pedestal, master positioning pin and neck bush before the right side；The neck bush is set to the preceding bottom in the right side
In the master positioning pin jack of seat upper surface, the movable insertion neck bush of master positioning pin；
The left back support includes left back pedestal, the first adjustable mandril and the first nut；First nut and described the
One adjustable mandril is threadedly engaged；The lower end of the first adjustable mandril and the threaded hole screw thread of the left back pedestal upper surface are matched
It closes；
The right rear support includes right rear base, the second adjustable mandril and the second nut；Second nut and described the
Two adjustable mandrils are threadedly engaged；The lower end of the second adjustable mandril and the threaded hole screw thread of the right rear base upper surface are matched
It closes.
The rhombus pin includes barre, rhombogen and with string side cylindrical body；The barre, the rhombogen and the band string
Side cylindrical body, which is sequentially connected, to be structure as a whole；
The barre is cylindrical body, and the X of the cross section of the rhombogen is greater than Y-direction length to length；
The X is equal to the maximum solid internal diameter of left front mounting hole to length, and the rhombogen X is to leading flank and trailing flank
It is arc surface.
The radius of arc surface is a quarter of the X to length.
The master positioning pin includes upper cylindrical body, cone and lower cylindrical body, and the outer diameter of the lower cylindrical body is equal to right preceding peace
The maximum solid internal diameter in hole is filled, the cone lower end surface is bonded with pedestal upper surface before the right side.
The first adjustable mandril is identical as the structure of the described second adjustable mandril, cylindrical body and lower part by top
External screw rod composition.
The left front pedestal, it is described it is right before pedestal, the left back pedestal and the right rear base by upper cuboid and under
Cuboid composition, wherein the up and down direction section of upper cuboid is square.
It is provided with left front datum target below the left front mounting hole of the subframe, is provided with below mounting hole before the right side
Datum target before the right side, is provided with left back datum target below left back mounting hole, is provided with base behind the right side below mounting hole after right
Quasi- target.
The internal diameter of the left front datum target is identical as the diameter of left front mounting hole, and outer diameter is greater than the straight of left front mounting hole
Diameter；
It is described it is right before datum target internal diameter with it is right before the diameter of mounting hole it is identical, outer diameter is greater than the straight of mounting hole before the right side
Diameter；
The internal diameter of the left back datum target is identical as the diameter of left back mounting hole, and outer diameter is greater than the straight of left back mounting hole
Diameter；
It is described it is right after datum target internal diameter with it is right after the diameter of mounting hole it is identical, outer diameter is greater than the straight of mounting hole behind the right side
Diameter.
A kind of subframe inspection localization method, utilizes the inspection positioning device of any of the above-described, comprising:
By subframe be placed in left front pedestal, it is right before on pedestal, left back pedestal and right rear base, make left front datum target with
The upper surface of left front pedestal is bonded, and datum target is bonded with the upper surface of pedestal before the right side before the right side；
Rhombus pin pass through left front mounting hole after be inserted into diamond shape pin jack in in the bushing of interior string side；
Master positioning pin is inserted into the neck bush in master positioning pin jack after mounting hole before the right side；
Determine left back datum target is with datum target behind the upper surface or the right side of left back pedestal and the upper end of right rear base
No fitting；If not being bonded, unclamp corresponding nut, rotate the adjustable mandril not being bonded, make the upper surface of the non-adjustable mandril with
Corresponding datum target fitting.
The beneficial effects of the present invention are:
The datum target that the technical program passes through left front support, right anterior branch seat, left back support and right rear support and subframe
Fitting forms fit datum plane and limits the Z-direction movement, X-axis rotation and Y-axis rotation three degree of freedom of subframe, by master positioning pin
Cylindrical surface limitation subframe X to mobile two freedom degrees of mobile and Y-axis, by the arc surface limitation Z axis rotation one of rhombus pin
A freedom degree completes the limitation of 6 freedom degrees of subframe and examines positioning, can guarantee that each benchmark of cubing is limiting secondary vehicle
Positioning and Planar Mechanisms will not be generated when the freedom degree of frame, setting simple operations are convenient, and detection efficiency is high.
Detailed description of the invention
Fig. 1 is the main view of subframe；
Fig. 2 is the A-A cross-sectional view of Fig. 1；
Fig. 3 is the B-B cross-sectional view of Fig. 1；
Fig. 4 is the right view of Fig. 3；
Fig. 5 is the enlarged view at I of Fig. 2；
Fig. 6 is the enlarged view at II of Fig. 3；
Fig. 7 is subframe-locating device figure；
Fig. 8 is the C-C cross-sectional view of Fig. 7；
Fig. 9 is the D-D cross-sectional view of Fig. 7；
Figure 10 is enlarged drawing at the III of Fig. 8；
Figure 11 is enlarged drawing at the IV of Fig. 8；
Figure 12 is enlarged drawing at the V of Fig. 9；
Figure 13 is enlarged drawing at the VI of Fig. 9；
Figure 14 is rhombus pin schematic diagram；
Figure 15 is rhombus pin top view.
Description of symbols
1 left front support；11 left front pedestals；12 rhombus pins；121 barres；122 rhombogens；123 band string side cylindrical bodies；13 bands
Interior string side bushing；2 right anterior branch seats；Pedestal before 21 right sides；22 master positioning pins；Cylindrical body on 221；222 cones；223 lower cylindrical bodies；23
Neck bush；3 left back supports；31 left back pedestals；32 first adjustable mandrils；4 right rear supports；41 right rear bases；5 subframes；6 bases
Seat；101 left front mounting holes；Mounting hole before 102 right sides；103 left back mounting holes；Mounting hole behind 104 right sides；105 left front datum targets；
Datum target before 106 right sides；107 left back datum targets；Datum target behind 108 right sides.
Specific embodiment
Carry out the technical solution that the present invention will be described in detail by the following examples, embodiment below is merely exemplary, only
It can be used to explanation and illustration technical solution of the present invention, and be not to be construed as the limitation to technical solution of the present invention.
As shown in Figures 1 to 6, have on subframe left front mounting hole 101, it is right before mounting hole 102, left back mounting hole 103 and
Mounting hole 104 behind the right side；Further include diverter mounting hole, front beam hole, swing arm front lining mounting hole, swing arm back bush mounting hole,
Mounting hole after back cross beam hole and subframe.
Left front datum target 105 is provided with below the left front mounting hole 101 of subframe, before the right side below mounting hole 102
Be provided with datum target 106 before the right side, be provided with left back datum target 107 below left back mounting hole 103, it is right after mounting hole 104
Below be provided with datum target 108 behind the right side.
Left front datum target is that internal diameter is identical as the diameter of left front mounting hole, and outer diameter is greater than the diameter 10mm of left front mounting hole
Anchor ring.
Datum target is that internal diameter is identical as the diameter of mounting hole before the right side before the right side, and outer diameter is greater than the diameter 10mm of mounting hole before the right side
Anchor ring.
Left back datum target is that internal diameter is identical as the diameter of left back mounting hole, and outer diameter is greater than the diameter 10mm of left back mounting hole
Anchor ring.
Datum target is that internal diameter is identical as the diameter of mounting hole behind the right side behind the right side, and outer diameter is greater than the diameter 10mm of mounting hole behind the right side
Anchor ring.
The flatness of the anchor ring of four datum targets is 0.2 hereinafter, and benchmark mesh before left front datum target and the right side above
Mark is symmetrical, and left back datum target and datum target behind the right side are symmetrical.Wherein left front datum target, it is right before benchmark behind datum target and the right side
Three datum targets of target can form datum level, and the datum level and left back datum target form fitting benchmark, for subframe
It supports and positions below.
The application provides a kind of subframe inspection positioning device, as shown in Fig. 7 to Figure 15, including pedestal 6, and it is set to base
Left front support 1, right anterior branch seat 2, left back support 3 and right rear support 4 on seat.
The left front mounting hole 101 of left front support 1 and subframe cooperates, mounting hole 102 before the right side of right anterior branch seat 2 and subframe
The left back mounting hole 103 of cooperation, left back support 3 and subframe cooperates, and right rear support 4 is matched with mounting hole 104 behind the right side of subframe
It closes.
As shown in Fig. 8, Fig. 9, Figure 11 and Figure 12, left front support 1 includes left front pedestal 11, rhombus pin 12 and serves as a contrast with interior string side
Set 13；It is set to interior string side bushing in the diamond shape pin jack of the upper surface of left front pedestal, the movable insertion of rhombus pin is with interior string
In the inner hole of side bushing；With interior string, in the string of bushing, plane is parallel with the XZ plane of left front pedestal, in this application, X to for
Front-rear direction, Y-direction are left and right directions, and Z-direction is up and down direction.
Rhombus pin 12 is including barre 121, rhombogen 122 and with string side cylindrical body 123；Barre, rhombogen and with string Bian Yuan
Cylinder, which is sequentially connected, to be structure as a whole；Barre is used for the installation and removal of rhombus pin.
Barre is cylindrical body, and the X of the cross section of rhombogen is greater than Y-direction length to length；X is equal to left front installation to length d
The maximum solid internal diameter in hole, and rhombogen X to leading flank and trailing flank be arc surface；The radius of arc surface is X to length
A quarter；The other faces of rhombogen are plane, are inserted in the inner hole with string sidelining set with string side cylindrical body, string after insertion
When plane is with interior string, the string side plane of bushing is bonded, for install limit, prevent rhombus pin from rotating, rhombogen lower plane with
The upper surface of left front pedestal is bonded.
As shown in figs, right anterior branch seat 2 includes pedestal 21, master positioning pin 22 and neck bush 23 before the right side；Liner is arranged
It is placed in front of the right side in the master positioning pin jack of pedestal upper surface, and does not expose the upper surface of pedestal before the right side, master positioning pin is movable to be inserted
Enter in the inner hole of neck bush.
Master positioning pin 22 includes upper cylindrical body 221, cone 222 and lower cylindrical body 223, and upper cylindrical body is for master positioning pin
Dial-out and insertion, the outer diameter of lower cylindrical body is equal to the maximum solid internal diameter of mounting hole before the right side, before cone lower end surface and the right side on pedestal
End face fitting.
As shown in Fig. 9 and Figure 13, left back support 3 includes left back pedestal 31, the first adjustable mandril 32 and the first nut；First
Nut is threadedly engaged with the first adjustable mandril；The lower end of first adjustable mandril and the threaded hole screw thread of left back pedestal upper surface are matched
It closes.
Right rear support 4 includes right rear base 41, the second adjustable mandril and the second nut；Second nut and the second adjustable mandril
It is threadedly engaged；The lower end of second adjustable mandril and the threaded hole of right rear base upper surface are threadedly engaged.
First adjustable mandril is identical as the structure of the second adjustable mandril, by the cylindrical body on top and the external screw rod group of lower part
At.The flatness of the upper surface of the cylindrical body on top is 0.01 hereinafter, the verticality of external screw rod and upper surface is below 0.02.
Pedestal, left back pedestal and right rear base are made of upper cuboid and lower cuboid before left front pedestal, the right side, wherein on
The up and down direction section of cuboid is square.The upper surface of upper cuboid and the depth of parallelism of pedestal are 0.02 hereinafter, upper rectangular
The flatness of the upper surface of body is below 0.01.The upper end of diamond shape pin jack, master positioning pin jack or threaded hole and respective seat
The verticality in face is 0.01 hereinafter, as shown in Fig. 8 to Figure 13.
The application also provides a kind of subframe inspection localization method, utilizes the inspection positioning device of any of the above-described, comprising:
First left front support, right anterior branch seat, left back support, right rear support are fixed on the base according to the theoretical size of mounting design, water chestnut
Shape pin and master positioning pin be each passed through left front mounting hole, it is right before mounting hole, by subframe be put into left front pedestal, it is right before pedestal, a left side
On the upper surface of rear base and right rear base, and make left front datum target, it is right before datum target respectively with left front pedestal, right preceding bottom
The upper surface fitting of seat, if behind left back datum target or the right side datum target and two adjustable mandrils below one of upper end
Face is not bonded, unclamp nut, rotation be not bonded adjustable mandril, make thereon end face be bonded with datum target.
Specially left back datum target is opposite with left back pedestal upper surface, datum target and right rear base upper surface phase behind the right side
It is right, after subframe is placed, if left back datum target is bonded with the upper surface of left back pedestal, datum target and bottom behind the right side behind the right side
The upper surface of seat is not bonded, at this point, unclamping the second nut, the second adjustable mandril is rotated, so that the upper surface of the second adjustable mandril
It is bonded with datum target behind the right side.
If left back datum target is not bonded with the upper surface of left back pedestal, behind the right side upper surface of datum target and right rear base
The first nut is then unclamped in fitting, rotates the first adjustable mandril, so that the upper surface of the first adjustable mandril and left back datum target are pasted
It closes.
The upper surface and the two adjustable mandril upper surfaces in back of pedestal and the datum target of subframe are pasted before left front pedestal, the right side
Conjunction forms fit datum plane and limits the Z-direction movement, X-axis rotation, Y-axis rotation three degree of freedom of subframe, the circle of master positioning pin
Cylinder limits the X of subframe to movement, mobile two freedom degrees of Y-direction, and the arc surface limitation Z axis of the rhombogen 122 of rhombus pin revolves
Turn one degree of freedom, complete the limitation of the six-freedom degree of subframe 5 and examines positioning, meanwhile, it is installed before left front mounting hole, the right side
The surrounding in hole is thin plate, can be considered with a thickness of zero, there is no interfering between restrictive condition when positioning, rationally completes subframe
Positioning is examined, as shown in Fig. 1 to Figure 15.
Four datum targets are selected on curved surface, determination can place the datum level of subframe, limit three of subframe from
By spending, use one of subframe with vehicle body mounting hole as two freedom degrees of master positioning hole limitation, then with subframe another
One degree of freedom is limited as secondary location hole with vehicle body mounting hole, solves welding structure complexity, the irregular subframe in outer surface
Orientation problem.
Guarantee that each benchmark of cubing will not generate positioning, Planar Mechanisms when limiting the freedom degree of subframe, can detect
Geometric tolerances between the dimensional tolerance and each body of each body of subframe, make cubing can satisfy the design requirement of subframe,
Guarantee the precision of subframe, improves product quality.
Disclosed above is only the embodiment of invention, but is not used to limit itself, any skill for being familiar with this field
Art personnel, relevant design can be carried out according to its essential idea, is improved etc., without departing from the spirit of the invention, all answer
This is within the scope of the present invention.
Claims (9)
1. a kind of subframe examines positioning device, which is characterized in that including pedestal, and the left front branch being set on the pedestal
Seat, right anterior branch seat, left back support and right rear support；
Mounting hole is matched before the right side of the cooperation of the left front mounting hole of the left front support and subframe, the right anterior branch seat and subframe
It closes, the left back mounting hole of the left back support and subframe cooperates, and mounting hole cooperates behind the right side of the right rear support and subframe；
The left front support includes left front pedestal, rhombus pin and with interior string side bushing；String side bushing is set to described in the band
In the diamond shape pin jack of the upper surface of left front pedestal, string side bushing in the movable insertion band of rhombus pin；
The right anterior branch seat includes pedestal, master positioning pin and neck bush before the right side；The neck bush be set to it is described it is right before on pedestal
In the master positioning pin jack of end face, the movable insertion neck bush of master positioning pin；
The left back support includes left back pedestal, the first adjustable mandril and the first nut；First nut and described first can
Mandril is adjusted to be threadedly engaged；The lower end of the first adjustable mandril and the threaded hole of the left back pedestal upper surface are threadedly engaged；
The right rear support includes right rear base, the second adjustable mandril and the second nut；Second nut and described second can
Mandril is adjusted to be threadedly engaged；The lower end of the second adjustable mandril and the threaded hole of the right rear base upper surface are threadedly engaged.
2. subframe according to claim 1 examines positioning device, which is characterized in that the rhombus pin includes barre, water chestnut
Body and with string side cylindrical body；The barre, the rhombogen and band string side cylindrical body are sequentially connected and are structure as a whole；
The barre is cylindrical body, and the X of the cross section of the rhombogen is greater than Y-direction length to length；
The X is equal to the maximum solid internal diameter of left front mounting hole to length, and the rhombogen X is to leading flank and trailing flank
Arc surface.
3. subframe according to claim 2 examines positioning device, which is characterized in that the radius of arc surface is X to length
A quarter.
4. subframe according to claim 1 examines positioning device, which is characterized in that the master positioning pin includes upper cylinder
Body, cone and lower cylindrical body, the outer diameter of the lower cylindrical body are equal to the maximum solid internal diameter of mounting hole before the right side, the cone lower end
Face is bonded with pedestal upper surface before the right side.
5. subframe according to claim 1 examines positioning device, which is characterized in that the first adjustable mandril with it is described
The structure of second adjustable mandril is identical, is made of the cylindrical body on top and the external screw rod of lower part.
6. subframe according to claim 1 examines positioning device, which is characterized in that before the left front pedestal, the right side
Pedestal, the left back pedestal and the right rear base are made of upper cuboid and lower cuboid, and wherein upper cuboid is upper and lower
Direction section is square.
7. subframe according to claim 1 examines positioning device, which is characterized in that the left front mounting hole of the subframe
Below be provided with left front datum target, datum target before the right side is provided with before right below mounting hole, below left back mounting hole
It is provided with left back datum target, is provided with datum target behind the right side below mounting hole behind the right side.
8. subframe detection tool device according to claim 7, which is characterized in that the internal diameter of the left front datum target and a left side
The diameter of preceding mounting hole is identical, and outer diameter is greater than the diameter of left front mounting hole；
The internal diameter of datum target is identical as the diameter of mounting hole before the right side before the right side, and outer diameter is greater than the diameter of mounting hole before the right side；
The internal diameter of the left back datum target is identical as the diameter of left back mounting hole, and outer diameter is greater than the diameter of left back mounting hole；
The internal diameter of datum target is identical as the diameter of mounting hole behind the right side behind the right side, and outer diameter is greater than the diameter of mounting hole behind the right side.
9. a kind of subframe examines localization method, which is characterized in that utilize the inspection positioning device of any of the above-described, comprising:
By subframe be placed in left front pedestal, it is right before on pedestal, left back pedestal and right rear base, make left front datum target with it is left front
The upper surface of pedestal is bonded, and datum target is bonded with the upper surface of pedestal before the right side before the right side；
Rhombus pin pass through left front mounting hole after be inserted into diamond shape pin jack in in the bushing of interior string side；
Master positioning pin is inserted into the neck bush in master positioning pin jack after mounting hole before the right side；
Determine whether left back datum target pastes with datum target behind the upper surface or the right side of left back pedestal and the upper end of right rear base
It closes；If not being bonded, unclamp corresponding nut, rotate the adjustable mandril not being bonded, make the upper surface of the non-adjustable mandril with it is corresponding
Datum target fitting.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811428368.2A CN109539932A (en) | 2018-11-27 | 2018-11-27 | A kind of subframe examines positioning device and method |
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|---|---|---|---|
| CN201811428368.2A CN109539932A (en) | 2018-11-27 | 2018-11-27 | A kind of subframe examines positioning device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345834A (en) * | 2019-08-19 | 2019-10-18 | 宁海建新自动化设备有限公司 | Automobile front subframe assembly checking tool |
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Address after: 230601 No. 99 Ziyun Road, Hefei Economic and Technological Development Zone, Anhui Province Applicant after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 No. 669 Shixin Road, Taohua Industrial Park, Hefei City, Anhui Province Applicant before: Anhui Jianghuai Automobile Group Limited by Share Ltd |
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Application publication date: 20190329 |