CN208721018U - A kind of scanning bracket based on photographic scanning technique - Google Patents
A kind of scanning bracket based on photographic scanning technique Download PDFInfo
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- CN208721018U CN208721018U CN201820970036.6U CN201820970036U CN208721018U CN 208721018 U CN208721018 U CN 208721018U CN 201820970036 U CN201820970036 U CN 201820970036U CN 208721018 U CN208721018 U CN 208721018U
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- bracket base
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Abstract
The utility model discloses a kind of scanning brackets based on photographic scanning technique, scanning bracket includes bracket base, the top of bracket base is stationary plane, stationary plane is equipped with fixed type frame, fixed is provided with benchmark gasket, workpiece to be scanned is placed on the gasket in fixed type frame, and bracket base is equipped with datum hole, and datum hole is used to generate the vehicle body coordinate system comprising reference coordinate as template.Type frame surface is equipped with positioning pin, and positioning pin after workpiece is fixed for scanning.Workpiece is scanned in a template, obtains the three-dimensional data of workpiece.The utility model can be measured instead of using cubing, be reduced work hours and manpower.
Description
Technical field
The utility model belongs to auto parts design field more particularly to a kind of scanning branch based on photographic scanning technique
Frame.
Background technique
Photographic scanning technique is by video camera to absorb image based on feature optical principle, handled through computer and calculate by
Survey the point cloud coordinate of workpiece.The equipment utilization multiple groups permanent datum intends the information data of Multiple-Scan measurement intake
Composition and division in a proportion is compared with automatic splicing can export the Digital Three-Dimensional data of measured surface point at single whole 3 dimensional drawing, be used for
Carry out curve reestablishing, product design, accuracy detection.
For in traditional auto parts design field, quality inspection personnel uses the inspection comprising accessories such as various blocks, bolts
The precision of tool measurement auto parts, when different accessories is placed in the corresponding position of cubing, needs to consume using cubing measurement accuracy
Take the more time, and the data that part is manually obtained using cubing are easy to produce biggish error.For more complex
Bodywork parts, might have multiple above measurement points and need to measure, many working hours and manpower can be expended.
For common optical scanner, scanning staff supports part using easy support frame, will lead to scanning branch every time
The variation for supportting position, is caused unstable.Or scanning staff is supported using the special stand for not including type frame, such bracket support
It is fixed for putting, and the later period is difficult to be adjusted flexibly.
Utility model content
To solve the problem above-mentioned, the utility model provides a kind of scanning bracket based on photographic scanning technique, the optics
Three-dimensional data of the scanning bracket based on tomography scan optical scanning technique measurement auto parts, it is artificial using inspection so as to reduce
Tool detects optical scanner to measure, and can provide a stable benchmark, while can also flexible setting supporting point.
The utility model adopts the following technical solution realizes:
A kind of scanning bracket based on photographic scanning technique, including bracket base, the bracket base are equipped with several
Datum hole.
It further, further include fixed type frame, workpiece to be scanned can be placed in the fixed type frame, the fixed
It is provided with the positioning pin that workpiece to be scanned is fixed, the fixed is provided with the benchmark being supported to workpiece to be scanned
Gasket.
Further, the bracket base is additionally provided with support rod, and the support rod and the fixed type frame support connect.
Further, the pedestal of the bracket base is equipped with the idler wheel of the bracket base easy to remove.
Further, the bracket base is additionally provided with suspension hook, and the suspension hook is set to the two sides of the bracket base.
Further, the pedestal of the bracket base is equipped with the forklift groove of the pedestal through the bracket base.
Further, the datum hole is equipped with rotatable dust excluding plate.
Further, the internal surface gaps of the outer surface of the type frame and theoretical workpiece are a fixed value H, this is fixed
Value is usually 3mm or 5mm.
Further, the type frame is equipped with dismountable benchmark gasket, and spacer height is fixed value H.
Further, the type frame detachably and is changed in the case where the workpiece does not need to be scanned for a long time
The type frame of other workpiece.
Compared with prior art, the utility model has the beneficial effects that:
The utility model discloses a kind of scanning bracket based on photographic scanning technique, which includes for positioning
The fixation type frame of workpiece and datum hole for establishing coordinate system, fixed type frame are equipped with movable for limiting workpiece to be scanned
Positioning pin converts reference point to same before datum hole can be facilitated scanning as the reference coordinate of photographic scanning technique
In a coordinate system, which is usually vehicle body coordinate system, the utility model compared with using precision of the cubing to measure workpiece,
It can reduce work hours and manpower, obtain more information content, more accurate detection result is provided.Also, by fixed
Frame places benchmark gasket, and using benchmark gasket as supporting surface, benchmark gasket is used to uniformly bear part gravity itself, prevents part
It is affected by gravity and workpiece is caused to deform, to improve the accuracy of the testing result of sheet type workpiece.Further, several
Benchmark gasket is detachably arranged at fixed type frame, and the position for the benchmark gasket for being used to support workpiece is adjusted flexibly,
By adjusting the position of benchmark gasket, several benchmark gaskets can be made uniformly to bear part gravity itself, prevent parts locally
Being affected by gravity causes to deform, to improve the accuracy of the result of scanning sheet workpiece.Moreover, the surface of fixed type frame is reason
A fixed value H is biased by the inner surface of workpiece to form, the thickness value of benchmark gasket is equal to fixed value H, so as to by by
Several benchmark gaskets support workpiece.
Detailed description of the invention
Fig. 1 is the schematic diagram of the forward structure of the utility model；
Fig. 2 is the schematic diagram of the backside structure of the utility model.
In figure: 10, datum hole；11, dust excluding plate；20, positioning pin；21, gasket；30, fixed type frame；40, forklift groove；50,
Idler wheel；60, lifting lug；70, support rod；100, bracket base.
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to the utility model, it should be noted that
Under the premise of not colliding, it can be formed in any combination between various embodiments described below or between each technical characteristic new
Embodiment.
As depicted in figs. 1 and 2, the utility model discloses a kind of scanning brackets based on photographic scanning technique, including branch
Frame pedestal 100, the top of bracket base 100 are stationary plane 101, and stationary plane is equipped with fixed type frame 30.Fixed type frame 30 is general
For gypsum production, the surface of fixed type frame 30 is that one fixed value H of inner surface biasing of theoretical workpiece is formed, fixed type frame 30
Surface be equipped with several gaskets 21, gasket 21 with a thickness of fixed value H, workpiece, which can be placed on fixed 30 surface of type frame, to be arranged
Gasket 21 on, the surface of fixed type frame 30 is equipped with several blind holes, and for installing positioning pin 20, positioning pin 20 can be to workpiece
It is positioned, guarantees that workpiece is accurately placed in fixed type frame 30.Four angles of stationary plane 101 are respectively provided with a datum hole 10,
By reference data set by datum hole 10, computer can convert coordinate according to the reference data in advance, after eliminating scanning
Reuse the step of software ajusts workpiece scan data.
In the present embodiment, bracket base 100 is additionally provided with support rod 70, and support rod 70 is set to stationary plane 101 and fixed type frame
30 contact position.In order to reduce weight support frame, fixed type frame 30 is under the premise of guaranteeing certain thickness, it is possible to reduce part gypsum
Dosage is arranged support rod 70 in the lower section for causing overhead positions, can prevent type frame from damaging because of force unbalance.
In the present embodiment, fixed type frame 30 further includes gasket 21, for the workpiece of thinner thickness, uses simple rack in the past
It is lack of standardization due to placing form difference or placement, it may cause workpiece bows deformation.Use the gasket 21 in fixed type frame 30
As supporting surface, it is used to uniformly bear part gravity itself, prevents because parts locally is affected by gravity and causes to deform.Pass through this
The accuracy of scanning sheet parts can be improved in method.
In the present embodiment, the pedestal of bracket base 100 is equipped with the idler wheel 50 of bracket base 100 easy to remove, is working
Scene generally requires bracket being moved to scanning area from storage area, but the heavier-weight of bracket is difficult to move, and is equipped with rolling
The bracket base 100 of wheel 50 is convenient mobile in scanning area.
In the present embodiment, the lifting lug 60 that bracket base 100 is additionally provided with convenient for overhead traveling crane transport, lifting lug 60 is set to bracket base
100 two sides.
The pedestal of bracket base 100 is equipped with one or more through the forklift groove 40 of the pedestal of bracket base 100, the present embodiment
With two forklift grooves 40, the pallet fork of fork truck is inserted into the forklift groove 40 and bracket base 100 is driven to be moved.
Bracket base 100 is equipped with dust excluding plate 11 corresponding with 10 quantity of datum hole, and the dust excluding plate 11 of the present embodiment includes one
A point of rotation, the point of rotation are set to the side of datum hole 10, and the plate body of dust excluding plate 11 is rotated around the point of rotation, scanned
After work, which can rotate to covering datum hole 10, and datum hole 10 is avoided to fall into dust.
The workflow of the utility model the following steps are included:
Before formally starting to be scanned workpiece, the scan templates for being suitable for scanning all workpiece are first established.
Wherein, scan templates establishment step the following steps are included:
Reference point setting steps: before scanning work starts, reference point is sticked to bracket and carries out tomography scan, pastes reference point
Position include around datum hole 10, do not covered by workpiece on the surface of the side of fixed type frame 30 and fixed type frame 30
Region, and the adapter for acquiring the actual element point of datum hole 10 is installed around datum hole 10.
Bracket base photography step: stationary plane 101 and fixed type frame 30 are taken the photograph using the photographic instrument of scanner
Shadow, due to the limitation of photographic equipment working principle, photographic equipment is typically only capable to acquire in one direction, in order to obtain stationary plane
101 and the fixed complete reference point three-dimensional information of type frame 30, generally require and photograph from multiple visual angles, by obtain it is multiple come
Complete reference point information is generated from the picture of different directions.
Bracket scanning step: three dimensional data collection is carried out using surface of the scanner to fixed type frame 30, due to
Stationary plane 101 and the fixed complete reference point information of type frame 30 are obtained by photography, it is only necessary to are scanned, be led to from multiple visual angles
Computer is crossed to be spliced using existing reference point.
Actual element point fit procedure: in the file of the three-dimensional digital model comprising reference point data and fixed type frame 30
The gross data for importing a fixation type frame surface comprising vehicle body coordinate system, on the basis of the gross data for fixing type frame surface
It is fitted, collector datum hole actual element point collected is constructed on stationary plane 101, and calculate in vehicle body coordinate system
Coordinate value corresponding to the actual element point out.
Reference Transforming Coordinate generation step: by the file of the three-dimensional digital model comprising reference point data and fixed type frame 30
Scanning step is reverted to, file only includes with reference to point data, with the seat for the datum hole actual element point that above-mentioned steps obtain at this time
Fitting is re-started on the basis of scale value, the actual element point of reference point and datum hole that bracket photography step obtains is fitted by system
To vehicle body coordinate system, to generate the template for being suitable for scanning workpiece.
After the completion of scan templates foundation, it can formally start to carry out tomography scan to workpiece, wherein workpiece scanning step
It is rapid the following steps are included:
Spraying imaging agent step: spraying imaging agent on the surface of workpiece to be scanned, since fixed type frame 30 has pasted reference point,
And reference point distribution be sufficient to scan, there is no need to paste reference point on workpiece, can save reference point and paste reference point when
Between, when especially batch workpiece scans, only need to spray imaging agent can be greatly improved efficiency.
Workpiece scanning step: the workpiece for coating imaging agent is placed in fixed type frame 30, is carried out with positioning pin 20 to it
Positioning is opened the camera of scanner in template file, is scanned simultaneously in multiple directions to workpiece using scanner
Generate the complete three-dimensional data of workpiece surface.
After workpiece is completed to scan, gridding processing is carried out to scanning result, due to being fitted to reference point before scanning
In vehicle body coordinate system, the data after gridding are not needed to be fitted again and can be compared with theoretical digital-to-analogue.
The workpiece that next is jetted through imaging agent can directly be replaced after scanning one workpiece of completion to be scanned, thus greatly
Reduce scanning working hour.
It is noted that replacing type frame every time or destroying the reference point in type frame, require to rebuild scanning mould
Therefore plate only when not scanning the workpiece for a long time, can just dismantle type frame.
Above embodiment is only preferred embodiments of the present invention, cannot be protected with this to limit the utility model
Range, the variation of any unsubstantiality that those skilled in the art is done on the basis of the utility model and replacement belong to
In the utility model range claimed.
Claims (7)
1. a kind of scanning bracket based on photographic scanning technique, including bracket base, it is characterised in that: set on the bracket base
There are several datum holes；The scanning bracket based on photographic scanning technique further includes fixed type frame, and workpiece to be scanned can be put
It is placed in the fixed type frame, the fixed is provided with the positioning pin that workpiece to be scanned is fixed, the fixed type frame
Equipped with the benchmark gasket being supported to workpiece to be scanned；The benchmark gasket is detachably arranged at the fixed type frame；It is described
Fixed type frame surface and the gap of theoretical work piece inner surface are a fixed value H, and the thickness of gasket is equal to the fixed value H.
2. as described in claim 1 based on the scanning bracket of photographic scanning technique, it is characterised in that: the bracket base is also set
There is support rod, the support rod and the fixed type frame support connect.
3. as described in claim 1 based on the scanning bracket of photographic scanning technique, it is characterised in that: the seat of the bracket base
Body is equipped with the idler wheel of the bracket base easy to remove.
4. as described in claim 1 based on the scanning bracket of photographic scanning technique, it is characterised in that: the bracket base is also set
There is suspension hook, the suspension hook is set to the two sides of the bracket base.
5. as described in claim 1 based on the scanning bracket of photographic scanning technique, it is characterised in that: the seat of the bracket base
Body is equipped with the forklift groove of the pedestal through the bracket base.
6. as described in claim 1 based on the scanning bracket of photographic scanning technique, it is characterised in that: the datum hole is equipped with can
The dust excluding plate of rotation.
7. as described in claim 1 based on the scanning bracket of photographic scanning technique, it is characterised in that: for a long time not to the work
In the case that part is scanned, the fixed type frame is detachably got off, and is changed to the type frame of other workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820970036.6U CN208721018U (en) | 2018-06-22 | 2018-06-22 | A kind of scanning bracket based on photographic scanning technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820970036.6U CN208721018U (en) | 2018-06-22 | 2018-06-22 | A kind of scanning bracket based on photographic scanning technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208721018U true CN208721018U (en) | 2019-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820970036.6U Active CN208721018U (en) | 2018-06-22 | 2018-06-22 | A kind of scanning bracket based on photographic scanning technique |
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| CN (1) | CN208721018U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112924192A (en) * | 2021-03-01 | 2021-06-08 | 机械工业第九设计研究院有限公司 | Vehicle body covering part dent inspection device |
-
2018
- 2018-06-22 CN CN201820970036.6U patent/CN208721018U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112924192A (en) * | 2021-03-01 | 2021-06-08 | 机械工业第九设计研究院有限公司 | Vehicle body covering part dent inspection device |
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