CN107512002A - The compensation method of Material shrinkage and system in a kind of photocureable rapid shaping - Google Patents
The compensation method of Material shrinkage and system in a kind of photocureable rapid shaping Download PDFInfo
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- CN107512002A CN107512002A CN201710906019.6A CN201710906019A CN107512002A CN 107512002 A CN107512002 A CN 107512002A CN 201710906019 A CN201710906019 A CN 201710906019A CN 107512002 A CN107512002 A CN 107512002A
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- mock
- threedimensional model
- aperture
- shrinkage factor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
Abstract
The invention discloses a kind of compensation method of Material shrinkage in photocureable rapid shaping and system, methods described to include：First threedimensional model in the hole with default aperture is obtained, according to first threedimensional model, prepares the first mock-up；The aperture size in first mock-up is measured, obtains measured value；According to the measured value and the default aperture, the shrinkage factor of the moulding material of the first mock-up is calculated；According to the shrinkage factor, first mock-up is compensated.The automatic compensation shunk to moulding material can be achieved in the present invention.
Description
Technical field
The present invention relates to rapid shaping technique field, more particularly to a kind of shrinkage compensation process of rapid prototyping material and it is
System.
Background technology
Rapid shaping technique is to resolve into a little or resolve into face by three-dimensional modeling data using computer, then by material by point
Face is piled into, physical prototypes are obtained by face stack adult.Rapid shaping technique has photocureable rapid shaping, heat fusing extrusion at present
The model that shaping and three kinds of main ways of selective laser sintering, heat fusing extrusion molding and selective laser sintering obtain
Surface is more coarse, and precision is low, and the model surface obtained using SLA/DLP Introduction To Stereolithographies is smooth, precision compared with
Height, so Introduction To Stereolithography has obtained the favor of more people.
Material used in Introduction To Stereolithography is liquid photosensitive resin, and this kind of material is changed into solid from liquid curing
When, certain shrinkage factor be present, the hole on physical model for causing to obtain diminishes, and is not consistent with the aperture of needs, it is difficult to match somebody with somebody
Close.For the problem, current settling mode is to coordinate the physical model to form out to realize through polishing again, but this
Mode adds corresponding Making programme and workload, less efficient.
The content of the invention
For in the prior art the defects of, the present invention provides a kind of compensation method of Material shrinkage in photocureable rapid shaping
And system, the automatic compensation to Material shrinkage can be achieved.
In a first aspect, the invention provides a kind of compensation method of Material shrinkage in photocureable rapid shaping, methods described
Including：
First threedimensional model in the hole with default aperture is obtained, according to first threedimensional model, it is in kind to prepare first
Model；
The aperture size in first mock-up is measured, obtains measured value；
According to the measured value and the default aperture, the shrinkage factor of the moulding material of the first mock-up is calculated；
According to the shrinkage factor, first mock-up is compensated.
Further, it is described according to first threedimensional model, the first mock-up is prepared, is specifically included：
First threedimensional model is cut into slices, forms the first hierarchical model；
Based on the first hierarchical model, with moulding material, successively shaping obtains the first mock-up.
Further, it is described according to the shrinkage factor, first mock-up is compensated, specifically included：
According to the shrinkage factor, expand the aperture of first threedimensional model, obtain the second threedimensional model；
According to second threedimensional model, the second mock-up is prepared.
Further, it is described according to second threedimensional model, the second mock-up is prepared, is specifically included：
Second threedimensional model is cut into slices, forms the second hierarchical model；
Based on the second hierarchical model, with moulding material, successively shaping obtains the second mock-up.
Further, it is described according to the shrinkage factor, first mock-up is compensated, specifically included：
First threedimensional model is cut into slices, obtains multiple slice maps；
According to the shrinkage factor, expand the aperture of the multiple slice map；
According to the slice map after expansion, the second mock-up is prepared.
Second aspect, present invention also offers a kind of shrinkage-compensating system of Material in Stereolithography, the system
Including：Shaped device, measurement apparatus, computing device, compensation device；The shaped device is connected with the measurement apparatus, described
Measurement apparatus is connected with the computing device, and the computing device is connected with the compensation device；
The shaped device, it is three-dimensional according to described first for obtaining first threedimensional model in the hole with default aperture
Model, prepare the first mock-up；
The measurement apparatus, for measuring the aperture size in first mock-up, obtain measured value；
The computing device, for according to the measured value and the default aperture, the first mock-up to be calculated
The shrinkage factor of moulding material；
The compensation device, for according to the shrinkage factor, being compensated to first mock-up.
As shown from the above technical solution, the present invention provide in a kind of photocureable rapid shaping the compensation method of Material shrinkage and
System, contraction that can be to moulding material are compensated automatically, are solved the mock-up aperture that rapid shaping obtains and are not met demand,
The problem of can not coordinating；It is easy to operate, improve operating efficiency.
Brief description of the drawings
Fig. 1 shows the schematic flow sheet of compensation method provided by the invention.
Fig. 2 shows the structural representation of compensation system provided by the invention.
Embodiment
The embodiment of technical solution of the present invention is described in detail below in conjunction with accompanying drawing.Following examples are only used for
Clearly illustrate technical scheme, therefore be intended only as example, and the protection of the present invention can not be limited with this
Scope.
Embodiment one
Fig. 1 shows the schematic flow sheet for the compensation method that the embodiment of the present invention one provides.As shown in figure 1, methods described
Including：
Step S1, first threedimensional model in the hole with default aperture is obtained, according to first threedimensional model, prepare the
One mock-up.
Preferably, step S1 is specifically included：First, the first threedimensional model is designed, is designed in first threedimensional model more
Individual hole, and the aperture in multiple holes is the default aperture pre-set, can be identical aperture or different apertures,
Threedimensional model described herein is the dummy model designed by three-dimensional graphics software；Then, based on the first threedimensional model,
With moulding materials such as powdery metal or plastics, the first mock-up is formed by being successively molded.
Step S2, the aperture size in first mock-up is measured, obtains measured value.
Step S3, according to the measured value and the default aperture, the moulding material of the first mock-up is calculated
Shrinkage factor.
Preferably, step S3 is specifically included：The measured value and the default aperture are made into Function Fitting, tied according to fitting
Fruit, obtain the shrinkage factor of the moulding material.
Step S4, according to the shrinkage factor, first mock-up is compensated.
Preferably, step S4 is specifically included：According to the shrinkage factor, expand the aperture of first threedimensional model, obtain
Second threedimensional model；According to second threedimensional model, the second mock-up is prepared.
It is further preferred that according to second threedimensional model, the second mock-up is prepared, is specifically included：By described
Two threedimensional models are cut into slices, and form the second hierarchical model；Based on the second hierarchical model, with moulding material, successively it is molded
To the second mock-up.
Alternatively, step S4 also may be accomplished by, and specifically include：First threedimensional model is cut into slices, obtained
To multiple slice maps；According to the shrinkage factor, expand the aperture of the multiple slice map；According to the slice map after expansion, prepare
Second mock-up.
For moulding material of the same race, its shrinkage factor is identical, therefore after the shrinkage factor of material is obtained by step S3,
When carrying out forming operation using moulding material of the same race every time, it is only necessary to which repeat step S4 expands respective aperture again, you can compensation
The phenomenon that the aperture caused by Material shrinkage diminishes.
Based on above content, the technique effect that the embodiment of the present invention one can be realized is：By by aperture in mock-up
Comparing calculation is carried out with the aperture of setting, can obtain the shrinkage factor of moulding material, and then material can be collapsible into according to shrinking
Row compensation, solve the mock-up aperture that rapid shaping obtains and do not meet demand, the problem of can not coordinating；Pass through two dimension or three-dimensional
The mode of compensation, the aperture precision of photocureable rapid shaping can be improved；Compensation is automatically performed according to shrinkage factor, reduces polishing work
Sequence, improve operating efficiency.
Embodiment two
To the embodiment of the present invention one accordingly, Fig. 2 shows a kind of structure of compensation system provided in an embodiment of the present invention
Schematic diagram.As shown in Fig. 2 the system includes：Shaped device 101, measurement apparatus 102, computing device 103, compensation device
104；The shaped device 101 is connected with the measurement apparatus 102, and the measurement apparatus 102 connects with the computing device 103
Connect, the computing device 103 is connected with the compensation device 104.
The shaped device 101, for obtaining first threedimensional model in the hole with default aperture, according to the described 1st
Dimension module, prepare the first mock-up；And it is specifically used for：First threedimensional model in the hole with default aperture is obtained, with first
Based on threedimensional model, with moulding materials such as powdery metal or plastics, the first mock-up is formed by being successively molded.
The measurement apparatus 102, for measuring the aperture size in first mock-up, obtain measured value.
The computing device 103, for according to the measured value and the default aperture, the first mock-up to be calculated
Moulding material shrinkage factor；And it is specifically used for：The measured value and the default aperture are made into Function Fitting, tied according to fitting
Fruit, obtain the shrinkage factor of the moulding material.
The compensation device 104, for according to the shrinkage factor, being compensated to first mock-up.
Preferably, the compensation device 104 is specifically used for：According to the shrinkage factor, expand first threedimensional model
Aperture, obtain the second threedimensional model；According to second threedimensional model, the second mock-up is prepared.
Alternatively, the compensation device 104 can be additionally used in：First threedimensional model is cut into slices, obtains multiple slice maps；
According to the shrinkage factor, expand the aperture of the multiple slice map；According to the slice map after expansion, the second mock-up is prepared.
Based on above content, what the embodiment of the present invention two can reach has the technical effect that：By by aperture in mock-up
Comparing calculation is carried out with the aperture of setting, can obtain the shrinkage factor of moulding material, and then material can be collapsible into according to shrinking
Row compensation, solve the mock-up aperture that rapid shaping obtains and do not meet demand, the problem of can not coordinating；Pass through two dimension or three-dimensional
The mode of compensation, the aperture precision of photocureable rapid shaping can be improved；Compensation is automatically performed according to shrinkage factor, reduces polishing work
Sequence, improve operating efficiency.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme, it all should cover among the claim of the present invention and the scope of specification.
Claims (6)
1. the compensation method of Material shrinkage in a kind of photocureable rapid shaping, it is characterised in that methods described includes：
First threedimensional model in the hole with default aperture is obtained, according to first threedimensional model, prepares the first mock-up；
The aperture size in first mock-up is measured, obtains measured value；
According to the measured value and the default aperture, the shrinkage factor of the moulding material of the first mock-up is calculated；
According to the shrinkage factor, first mock-up is compensated.
2. compensation method according to claim 1, it is characterised in that it is described according to first threedimensional model, prepare the
One mock-up, is specifically included：
First threedimensional model is cut into slices, forms the first hierarchical model；
Based on the first hierarchical model, with moulding material, successively shaping obtains the first mock-up.
3. compensation method according to claim 1, it is characterised in that it is described according to the shrinkage factor, it is real to described first
Thing model compensates, and specifically includes：
According to the shrinkage factor, expand the aperture of first threedimensional model, obtain the second threedimensional model；
According to second threedimensional model, the second mock-up is prepared.
4. compensation method according to claim 3, it is characterised in that it is described according to second threedimensional model, prepare the
Two mock-ups, are specifically included：
Second threedimensional model is cut into slices, forms the second hierarchical model；
Based on the second hierarchical model, with moulding material, successively shaping obtains the second mock-up.
5. compensation method according to claim 1, it is characterised in that it is described according to the shrinkage factor, it is real to described first
Thing model compensates, and specifically includes：
First threedimensional model is cut into slices, obtains multiple slice maps；
According to the shrinkage factor, expand the aperture of the multiple slice map；
According to the slice map after expansion, the second mock-up is prepared.
6. the compensation system of Material shrinkage in a kind of photocureable rapid shaping, it is characterised in that the system includes：Shaping dress
Put, measurement apparatus, computing device, compensation device；The shaped device is connected with the measurement apparatus, the measurement apparatus and institute
Computing device connection is stated, the computing device is connected with the compensation device；
The shaped device, for obtaining first threedimensional model in the hole with default aperture, according to first threedimensional model,
Prepare the first mock-up；
The measurement apparatus, for measuring the aperture size in first mock-up, obtain measured value；
The computing device, for according to the measured value and the default aperture, the shaping of the first mock-up to be calculated
The shrinkage factor of material；
The compensation device, for according to the shrinkage factor, being compensated to first mock-up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710906019.6A CN107512002A (en) | 2017-09-29 | 2017-09-29 | The compensation method of Material shrinkage and system in a kind of photocureable rapid shaping |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710906019.6A CN107512002A (en) | 2017-09-29 | 2017-09-29 | The compensation method of Material shrinkage and system in a kind of photocureable rapid shaping |
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| CN107512002A true CN107512002A (en) | 2017-12-26 |
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| CN201710906019.6A Pending CN107512002A (en) | 2017-09-29 | 2017-09-29 | The compensation method of Material shrinkage and system in a kind of photocureable rapid shaping |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111113903A (en) * | 2020-02-27 | 2020-05-08 | 杭州电子科技大学 | Automatic calibration method for 3D printing micro-nano device based on artificial intelligence |
| CN112706406A (en) * | 2020-12-18 | 2021-04-27 | 湖南华曙高科技有限责任公司 | Processing method and device for rapid prototyping manufacturing model and computer equipment |
| US11138352B2 (en) | 2018-06-06 | 2021-10-05 | Hamilton Sundstrand Corporation | Additive manufacturing including compensation modeling methodology with shape transformation |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105817620A (en) * | 2015-02-10 | 2016-08-03 | 深圳光韵达光电科技股份有限公司 | 3D-printing assembly-free manufacturing method for model |
-
2017
- 2017-09-29 CN CN201710906019.6A patent/CN107512002A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105817620A (en) * | 2015-02-10 | 2016-08-03 | 深圳光韵达光电科技股份有限公司 | 3D-printing assembly-free manufacturing method for model |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11138352B2 (en) | 2018-06-06 | 2021-10-05 | Hamilton Sundstrand Corporation | Additive manufacturing including compensation modeling methodology with shape transformation |
| CN111113903A (en) * | 2020-02-27 | 2020-05-08 | 杭州电子科技大学 | Automatic calibration method for 3D printing micro-nano device based on artificial intelligence |
| CN112706406A (en) * | 2020-12-18 | 2021-04-27 | 湖南华曙高科技有限责任公司 | Processing method and device for rapid prototyping manufacturing model and computer equipment |
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