CN103631982A - Reverse engineering digital model reconstruction method based on PRO/E - Google Patents
Reverse engineering digital model reconstruction method based on PRO/E Download PDFInfo
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- CN103631982A CN103631982A CN201310290002.4A CN201310290002A CN103631982A CN 103631982 A CN103631982 A CN 103631982A CN 201310290002 A CN201310290002 A CN 201310290002A CN 103631982 A CN103631982 A CN 103631982A
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Abstract
With the development of the industrial technology, the product requirements are diversified and complicated, the product production cycle is increasingly shortened, and therefore how to complete product design and manufacturing within the shortest time becomes an important task in the industrial community. In order to solve the problems that the design process of some products is complex, and 3D CAD data can not be produced, the reverse engineering technology emerges at the right moment. Pro/Engineer operation software occupies an important position in the current three-dimensional modeling software field. The software is set up on a database on a uniform base layer, and once an engineering detail drawing changes, NC tool routes can be automatically updated. If an assembly engineering drawing changes, the whole three-dimensional model can have completely the same response. Due to the advantage, the design is better optimized, the finished product quality is higher, and the price is lower. The invention relates to a reverse engineering digital model reconstruction method based on the PRO/E, and illustration is given by setting up a mouse entity model. Through the method, the product design cycle is effectively shortened, and the product accuracy is improved.
Description
Technical field
The present invention relates to a kind of reverse-engineering digital model reconstructing method based on PRO/E, and take and create mouse solid model and describe as example.
Background technology
Along with the continuous lifting of industrial technology, how the shortened of the variation of product demand, complicated and product life cycle, complete Design and machining of products within the shortest time, to grasp the first market opportunities, becomes the important topic of industry member.Yet be not that all products all have design drawing, its design process may be very miscellaneous and cannot produces 3D cad data.In order to overcome these problems, reverse Engineering Technology is arisen at the historic moment.
The idiographic flow of reverse-engineering is as follows: first utilize 3D digitalized measuring apparatus to record the profile coordinate figure of existing sample or model, again by after construction curved surface, editor, modification, reach CAD/CAM system, then through the NC machining path of cutter that CAM produces, deliver to mould or the model that CNC processing machine or rapidform machine (Rapid Prototyping) are produced sample, finally utilize fast mould technology to carry out various in a small amount system of turning over.
Pro/Engineer function software is the integrated three-dimensional software of CAD/CAM/CAE under U.S. parameter technology company (PTC), in current 3D sculpting software field, is seized of critical role.Pro/Engineer is on the database being based upon in unified basic unit, once engineering detail drawing change, NC(numerical control) tool path also can upgrade automatically; Packing engineering figure, if any any change, also reacts on whole three-dimensional model completely equally.This advantage, more optimizes design, and end product quality is higher, and product can be introduced to the market better, and price is also more cheap.
Summary of the invention
What the present invention proposed is a kind of reverse-engineering digital model reconstructing method based on PRO/E, and take establishment mouse solid model as example describes, and has effectively shortened the design cycle of product, has improved the precision of product.The step of the method is as follows: 1, obtain surface point data; 2, measurement data is carried out to pre-service; 3, curve; 4, curved surface builds; 5, surface-edit; 6, curved surface detects; 7, three-dimension curved surface is set up; 8, application pro/Engineer4.0 create mouse solid model.The scheme that the present invention takes is:
Obtain surface point data:
The mode that some data adopt non-contact laser scanner to measure mouse surface obtains.
Measurement data pre-service:
The pre-service of measurement data comprises: the steps such as the amalgamation of measurement data, noise spot removing, coordinates correction, cross-section data point obtain, data point is resampled, the rearrangement of cross-section data point.
Curve:
By setup control, count out and curve smoothing value, software carries out curve fitting automatically.
Curved surface builds:
The curve of looking unfamiliar is in the past that lifter surface can be constructed in basis.
Surface-edit:
By the grid of adjusting the reference mark of curved surface or directly adjusting curved surface, edited, make curved surface level and smooth.
Curved surface detects:
Utilize curvature to analyze and understand surface smoothing situation, assessment Surface quality quality.
Three-dimension curved surface is set up:
The curved surface of building up is saved as to IGES form, proceed to CAD/CAM integrated software and further edit surface model.
Create mouse solid model:
The mouse top of having handled well in Surfacer10 before opening in pro/Engineer4.0 and bottom scan file, carry out hypostazation.In pro/Engineer, create assembly, insert mouse top, then insert mouse bottom and assemble.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet that the present invention is based on the reverse-engineering digital model reconstructing method of PRO/E.
Fig. 2 is the shape data figure of laser scanner measurement mouse.
Fig. 3 is the some data illustraton of model of integrating.
Fig. 4 deletes ambient noise point diagram.
Fig. 5 is the point cloud chart after proofreading and correct.
Fig. 6 is a cloud sectional view.
Fig. 7 is comparison diagram before and after cloud data is repaired.
Fig. 8 is a data rearrangement figure.
Fig. 9 is curve figure.
Figure 10 builds lifter surface figure.
Figure 11 adjusts surface chart.
Figure 12 is complete surface chart.
Figure 13 utilizes Gaussian curvature to detect surface smoothness figure.
Figure 14 is the surface model figure that IDEAS software reads in IGES form.
Figure 15 is three-dimensional entity model figure.
Embodiment
Obtain surface point data:
The mode that some data adopt non-contact laser scanner to measure mouse surface obtains, as shown in Figure 2.
Measurement data pre-service:
The pre-service of measurement data comprises: the steps such as the amalgamation of measurement data, noise spot removing, coordinates correction, cross-section data point obtain, data point is resampled, the rearrangement of cross-section data point are below the processes of this work that data importing Surfacer10 software is completed.
(1) amalgamation of some data
Adopt the method for correcting coordinate of monumented point, the survey data decision coordinate transformation relation by three monumented points, transfers the coordinate system of twice survey data unanimously to.This method is used three foundations that monumented point is coordinate conversion, and measuring object need be pasted three monumented points, and scanning simultaneously, and the software that adopts Atos measuring instrument to carry carries out the amalgamation of a data, and the point cloud model after amalgamation as shown in Figure 3.
(2) noise spot is removed
To obtaining cloud data, carry out point group inspection, delete unwanted noise spot.Figure 4 shows that manual circle choosing removing noise spot.
(3) some cloud coordinates correction
For convenience of follow-up work, need to use the positioning function of Surfacer software to carry out a cloud coordinates correction.Point cloud position through adjusting as shown in Figure 5.
(4) cross-section data point obtains
The curve of construction curved surface can be used cross section mode given plane normal vector and interval, required Section Point data are extracted, cross section can with parallel, circular, radial, along modes such as outline lines, choose.This example is total to 30 cross sections of parallel cutting along Z-direction, as shown in Figure 6.
(5) some data modification
Mouse exemplar, due to surface some area defects (depression) or surperficial die parting line groove, makes laser scanning result occur local damage, need to carry out interpolation repairing, Figure 7 shows that software interpolation contrasts before and after repairing.
(6) cross-section data point rearrangement
After repairing and resampling, can destroy the sequence of legacy data, need to confirm that by the order of point (line in Fig. 8) mode rearranges, the direction of a curve while guaranteeing matched curve is consistent, while avoiding curved surface to build, is distorted.
Curve:
By setup control, count out and curve smoothing value, software carries out curve fitting automatically, as shown in Figure 9.
Curved surface builds:
The curve of looking unfamiliar is in the past for constructing lifter surface as shown in figure 10 in basis.
Surface-edit:
By the grid of adjusting the reference mark of curved surface or directly adjusting curved surface, edited, make curved surface level and smooth, as shown in figure 11.Complete curved surface after editor as shown in figure 12.
Curved surface detects:
Utilize curvature to analyze and understand surface smoothing situation, assessment Surface quality quality.Figure 13 utilizes Gaussian curvature analysis, and green expression smoothly, subregion occurs this region curvature variation of red or yellow explanation greatly.
Three-dimension curved surface is set up:
The curved surface of building up is saved as to IGES form, proceed to CAD/CAM integrated software and further edit surface model.Figure 14 shows that IDEAS software reads in the surface model of IGES form.Figure 15 shows that the three-dimensional entity model of setting up according to surface model.
Create mouse solid model:
(1) create the top entity model of mouse
The mouse top scanning document of having handled well in Surfacer10 before opening in pro/Engineer4.0, carries out hypostazation.
(2) create the bottom solid model of mouse
The mouse bottom scan file of having handled well in Surfacer10 before opening in pro/Engineer4.0, carries out hypostazation.
(3) in pro/Engineer, create assembly, insert mouse top, then insert mouse bottom and assemble.
Claims (9)
1. obtain surface point data:
The mode that some data adopt non-contact laser scanner to measure mouse surface obtains.
2. measurement data pre-service:
The pre-service of measurement data comprises: the steps such as the amalgamation of measurement data, noise spot removing, coordinates correction, cross-section data point obtain, data point is resampled, the rearrangement of cross-section data point.
3. curve:
By setup control, count out and curve smoothing value, software carries out curve fitting automatically.
4. curved surface builds:
The curve of looking unfamiliar is in the past that lifter surface can be constructed in basis.
5. surface-edit:
By the grid of adjusting the reference mark of curved surface or directly adjusting curved surface, edited, make curved surface level and smooth.
6. curved surface detects:
Utilize curvature to analyze and understand surface smoothing situation, assessment Surface quality quality.
7. three-dimension curved surface is set up:
The curved surface of building up is saved as to IGES form, proceed to CAD/CAM integrated software and further edit surface model.
8. create mouse solid model:
The mouse top of having handled well in Surfacer10 before opening in pro/Engineer4.0 and bottom scan file, carry out hypostazation.
9. in pro/Engineer, create assembly, insert mouse top, then insert mouse bottom and assemble.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310290002.4A CN103631982A (en) | 2013-07-11 | 2013-07-11 | Reverse engineering digital model reconstruction method based on PRO/E |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310290002.4A CN103631982A (en) | 2013-07-11 | 2013-07-11 | Reverse engineering digital model reconstruction method based on PRO/E |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103885390A (en) * | 2014-04-09 | 2014-06-25 | 哈尔滨工业大学 | Demonstration-free laser three-dimensional measurement method based on reverse engineering technology and device |
| CN106021885A (en) * | 2016-05-13 | 2016-10-12 | 江南大学 | Illumination model-based discrete surface quality analysis method and system |
| CN111767600A (en) * | 2020-06-30 | 2020-10-13 | 春涛国际建筑有限公司 | Curved surface flower bed face brick curvature control construction method and system |
| CN113806892A (en) * | 2021-10-08 | 2021-12-17 | 江苏食品药品职业技术学院 | Reverse engineering-based propeller digital design and processing method |
| CN115439720A (en) * | 2022-11-08 | 2022-12-06 | 成都数联云算科技有限公司 | CAM image reconstruction method, CAM image training method, CAM image reconstruction device, CAM image training device and CAM image training medium |
-
2013
- 2013-07-11 CN CN201310290002.4A patent/CN103631982A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103885390A (en) * | 2014-04-09 | 2014-06-25 | 哈尔滨工业大学 | Demonstration-free laser three-dimensional measurement method based on reverse engineering technology and device |
| CN106021885A (en) * | 2016-05-13 | 2016-10-12 | 江南大学 | Illumination model-based discrete surface quality analysis method and system |
| CN106021885B (en) * | 2016-05-13 | 2018-08-21 | 江南大学 | Discrete Surfaces Quality Analysis Methods based on illumination model and system |
| CN111767600A (en) * | 2020-06-30 | 2020-10-13 | 春涛国际建筑有限公司 | Curved surface flower bed face brick curvature control construction method and system |
| CN113806892A (en) * | 2021-10-08 | 2021-12-17 | 江苏食品药品职业技术学院 | Reverse engineering-based propeller digital design and processing method |
| CN115439720A (en) * | 2022-11-08 | 2022-12-06 | 成都数联云算科技有限公司 | CAM image reconstruction method, CAM image training method, CAM image reconstruction device, CAM image training device and CAM image training medium |
| CN115439720B (en) * | 2022-11-08 | 2023-01-24 | 成都数联云算科技有限公司 | CAM image reconstruction method, training method, device, equipment and medium |
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Application publication date: 20140312 |