CN106273445A - The characteristic test method of a kind of 3D printer and device - Google Patents
The characteristic test method of a kind of 3D printer and device Download PDFInfo
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- CN106273445A CN106273445A CN201510296111.6A CN201510296111A CN106273445A CN 106273445 A CN106273445 A CN 106273445A CN 201510296111 A CN201510296111 A CN 201510296111A CN 106273445 A CN106273445 A CN 106273445A
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- 238000010998 test method Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000012360 testing method Methods 0.000 claims abstract description 17
- 238000005520 cutting process Methods 0.000 claims description 7
- 230000001186 cumulative effect Effects 0.000 claims description 3
- 238000007639 printing Methods 0.000 description 10
- 238000013178 mathematical model Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000004590 computer program Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010146 3D printing Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Abstract
The invention discloses the characteristic test method of a kind of 3D printer, including: set up the section group that one group of area is gradually increased, print one by one for described 3D printer；Set and use the first stripping means that the section in described section group is carried out demoulding process；Obtain the information of last safe demoulding correspondence section；Calculate the area of last safe demoulding correspondence section, as described safe area threshold.The present invention further simultaneously discloses the characteristic test device of a kind of 3D printer.
Description
Technical field
The present invention relates to 3D printing technique field, particularly relate to a kind of 3D printer characteristic test method and
Device.
Background technology
Lower light projector liquid 3D printing technique light source occurs at liquid container (hopper) bottom, curing reaction
Container bottom, needs upwards to lift cured printer model after having solidified one layer so that it is from the bottom of hopper
Portion peels off, and i.e. carries out demoulding process, in order to continue next layer of printer model.
A kind of stripping means is: controls print platform and rises, and drives printer model to rise therewith, directly will beat
Die type pulls up bottom hopper, the referred to herein as first stripping means.Being a risk that of this stripping means,
Knockout course is rigidity, easily causes the damage of printer model, i.e. can not the safe demoulding, reduction is printed as
Power.Especially for the section that area is bigger, adopt the demoulding in this way, as a consequence it is hardly possible to the safe demoulding.
Then many 3D printers are designed with the slant-pull structure of assisted demoulding, it is provided that another kind of stripping means；
Particularly as follows: control hopper, first along side, slow downward-sloping control print platform rises certain altitude again
Control hopper and recover level, the referred to herein as second stripping means.This stripping means make printer model with
Separation process bottom hopper, from the beginning of a lateral edges of printer model, the most slowly completes to peel off, significantly carries
High demoulding safety.But this stripping means is the most more, needed for the whole printer model of making is significantly increased
Time.
More preferably scheme is to use the first stripping means when the demoulding for the section that area is less, for
The section that area is bigger uses the second stripping means when the demoulding.But the premise of do so is intended to obtain 3D beats
When print machine uses the first stripping means to carry out the demoulding, it is possible to the maximum sliced surfaces product value of the safe demoulding, herein
It is referred to as safe area threshold.This safe area threshold is not only relevant with the structure of 3D printer, prints material
This threshold value is all had an impact by the design of material, hopper, moulding process, therefore, exists for same 3D printer
Under different print conditions, safe area threshold is it can also happen that change.Herein by printed material, hopper
Design, moulding process etc. affect the condition of the safe area threshold of 3D printer and are referred to as print conditions.
Therefore, safe area threshold is that a 3D printer is under certain print conditions, it is possible to use first
Stripping means carries out the largest face product value of the safe demoulding.Know this characteristic of 3D printer, to instructing 3D
It is significant that printer carries out 3D modelling.
Summary of the invention
For solving the technical problem of existing existence, embodiment of the present invention expectation provides the spy of a kind of 3D printer
Property method of testing and device, it is possible to test out the safe area that 3D printer is corresponding under specific print conditions
Threshold value.
The technical scheme of the embodiment of the present invention is achieved in that
The embodiment of the present invention provides the characteristic test method of a kind of 3D printer, and the method includes:
Set up the section group that one group of area is gradually increased, print one by one for described 3D printer；
Set and use the first stripping means that the section in described section group is carried out demoulding process；
Obtain the information of last safe demoulding correspondence section；
Calculate the area of last safe demoulding correspondence section, as described safe area threshold.
In such scheme, described set up the section group that one group of area is gradually increased and include:
Obtaining an empirical numerical model, the horizontal section area of described empirical numerical model is the most gradually
Increase；
Described empirical numerical model is carried out slicing treatment, obtains the section group that one group of area is gradually increased.
In such scheme, described empirical numerical model includes chamfered edge platform.
In such scheme, described characteristic test method includes:
Adjust the difference in areas between section in described section group, control measuring accuracy.
In such scheme, in described adjustment described section group, the difference in areas between section includes:
Adjust slice spacings when carrying out described slicing treatment.
In such scheme, when described empirical numerical model is chamfered edge platform, described adjustment described section group is cut
Difference in areas between sheet includes:
Adjust the slope ratio of described chamfered edge platform；And/or
Adjust the first floor section area that described chamfered edge platform is corresponding.
The embodiment of the present invention provides the characteristic test device of a kind of 3D printer, and this device includes: section
Set up module, demoulding setting module, data obtaining module and threshold determination module；Wherein,
Module is set up in section, for setting up the section group that one group of area is gradually increased, for described 3D printer
Print one by one；
Demoulding setting module, takes off the section in described section group for setting use the first stripping means
Mould processes；
Data obtaining module, for obtaining the information of last safe demoulding correspondence section；
Threshold determination module, for calculating the area of last safe demoulding correspondence section, as described peace
Gross area threshold value.
In such scheme, described section is set up module and is included:
Model acquiring unit, for obtaining an empirical numerical model, the level of described empirical numerical model is cut
Face area is gradually increased from bottom to top；
Slicing treatment unit, for described empirical numerical model is carried out slicing treatment, obtain one group of area by
Cumulative big section group.
In such scheme, described device also includes:
Precision controlling module, for adjusting the difference in areas between cutting into slices in described section group, controls measuring accuracy.
In such scheme, described precision controlling module includes:
Interval adjustment unit, for adjusting slice spacings when carrying out described slicing treatment；
Slope, than adjustment unit, for when described empirical numerical model is chamfered edge platform, adjusts described chamfered edge platform
Slope ratio；
First floor section adjustment unit, for when described empirical numerical model is chamfered edge platform, adjusts described chamfered edge
The first floor section area that platform is corresponding.
The characteristic test method of the 3D printer that the embodiment of the present invention is provided and device, by printing one group
The section group that area is gradually increased, and the stripping means of all sections in this section group is all set position first take off
Mould mode, in reality prints, gets the area of last safe demoulding correspondence section, thus tests
Obtain the safe area threshold that this 3D printer is corresponding under certain print conditions；And, it is also possible to logical
Cross adjust section between difference in areas to control the measuring accuracy of this test result, thus, can get more
The safest reliable area threshold.
Accompanying drawing explanation
The characteristic test method of the 3D printer that Fig. 1 provides for the embodiment of the present invention realize schematic flow sheet；
Fig. 2 is the chamfered edge platform schematic diagram shown in the embodiment of the present invention；
The composition structural representation of the characteristic test device of the 3D printer that Fig. 3 provides for the embodiment of the present invention.
Detailed description of the invention
In order to be illustrated more clearly that the embodiment of the present invention and technical scheme, below in conjunction with drawings and Examples pair
Technical scheme is described in detail, it is clear that described embodiment is of the present invention
Divide embodiment rather than whole embodiment.Based on embodiments of the invention, those of ordinary skill in the art exist
The every other embodiment obtained on the premise of not paying creative work, broadly falls into the model of present invention protection
Enclose.
In embodiments of the present invention, 3D printer is lower light projector liquid 3D printer, including host computer and under
Position machine, host computer, for 3D mathematical model to be printed is carried out slicing treatment, forms cutting of one group of two dimension
Sheet, and generate printing control information；Slave computer is for according to the information of control, and corresponding mathematical model is from bottom to top
Print the section that mathematical model is corresponding one by one, complete the making to physical print model.Here, described control
Information can be transmitted with the form of GCODE file.
The characteristic test method of the 3D printer that Fig. 1 provides for the embodiment of the present invention realize schematic flow sheet,
As it is shown in figure 1, the method includes:
Step 101, sets up the section group that one group of area is gradually increased, and prints one by one for described 3D printer；
Concrete, host computer is set up the section group that one group of area is gradually increased, prints one by one for slave computer.
In order to enable quick obtaining to meeting the section group required, it is preferred that above-mentioned set up one group of area and gradually increase
Big section group includes:
Obtaining an empirical numerical model, the horizontal section area of described empirical numerical model is the most gradually
Increase；
Described empirical numerical model is carried out slicing treatment, obtains the section group that one group of area is gradually increased.
Concrete, user can input or directly set up an empirical numerical model at host computer, if this experiment
The horizontal section area of mathematical model is to be gradually increased from bottom to top；Then, host computer is to described reality
Test mathematical model and carry out slicing treatment, just can get the section group that one group of area is gradually increased.
Here, why require that the horizontal section area of empirical numerical model is to be gradually increased from bottom to top, be
Because generally 3D printer is the printer model that the bottom from mathematical model starts printing and making entity, therefore,
If 3D printer is the printer model that the top from mathematical model starts printing and making entity, then to experiment
The requirement of mathematical model is: horizontal section area is to be gradually reduced from bottom to top.
Further, calculating the area of section for convenience, optional chamfered edge platform is as empirical numerical model.
It is further, optional that positive truncated rectangular pyramids is as empirical numerical model, as in figure 2 it is shown, this is just
The slope of truncated rectangular pyramids is than for t, and bottom 6 is L for the length of sidebSquare, the floor height of printing is h (i.e. slicing treatment
Time, the spacing between section), then the area of n-th layer section is:
Step 102, sets and uses the first stripping means that the section in described section group is carried out demoulding process；
Concrete, host computer sets use the first stripping means in described section group in printing control information
Section carry out demoulding process.
So, slave computer will be according to printing control information, after the arbitrary section in having printed described section group,
The most first stripping means carries out demoulding process.Along with the continuous increase of section area, knockout course will further
Difficulty, it is assumed that the when of printing to kth layer can the safe demoulding, and cannot pacify the when of having arrived kth+1 layer
The full demoulding, the i.e. demoulding make printer model there occurs damage.Then the section corresponding to kth layer is i.e. last
Secondary safe demoulding correspondence is cut into slices.
Step 103, obtains the information of last safe demoulding correspondence section；
Concrete, host computer obtains the information of last safe demoulding correspondence section.
Here, the information of last safe demoulding correspondence section can be cut into slices corresponding numbering or level number
Etc. the information that can identify section.These information, can be after user observes that printer model damages, the most really
Host computer is inputed to, it is also possible to be that demoulding situation is fed back to host computer by slave computer, host computer judge after Ding
After obtain.
Step 104, calculates the area of last safe demoulding correspondence section, as described safe area threshold
Value.The slice information got according to step 103, it is corresponding that host computer can calculate the last safe demoulding
The area of section, using calculated area value as tested 3D printer institute under the print conditions of test
The safe area threshold having.
In actual production process, with this safe area threshold as foundation, by the size according to area of cutting into slices
Classify: area is divided into a class less than or equal to safe area threshold；Area divides more than safe area threshold
For another kind of.For different classes of section, different stripping means can be set.
Obviously, the safe area that the safe area threshold obtained is actual less than 3D printer is according to said method tested
Threshold value, for approximation.And the safe area threshold that test obtains is less than 3D printer and actual safety surface
Difference between long-pending threshold value is less than the difference in areas between the section of last safe demoulding correspondence and its section afterwards.
Therefore, measuring accuracy to be controlled, if the difference in areas adjusted between cutting into slices in described section group.
When by empirical numerical model is carried out slicing treatment obtaining section group, entered by adjustment
Slice spacings (printing floor height) during row slicing treatment, the face between i.e. cutting into slices in section group described in adjustable
Product moment, thus reach to control the purpose of measuring accuracy.
In one embodiment, selection positive truncated rectangular pyramids as shown in Figure 2 is as empirical numerical model, and beats
The when of printing to kth layer can the safe demoulding, and the when of having arrived kth+1 layer cannot the safe demoulding, the most really
Fixed safe area threshold is Sk, and the difference in areas of kth+1 layer and kth layer is:
Understand according to formula (2), print floor height h except adjusting, compare t also by the slope adjusting chamfered edge platform
Or the length of side of first floor section is Lb(i.e. adjusting the area of first floor section), adjusts the difference in areas between section.
Fig. 3 is the composition structural representation of the characteristic test device of the 3D printer that the embodiment of the present invention provides,
As it is shown on figure 3, this characteristic test device includes: module 301, demoulding setting module 302, letter are set up in section
Breath acquisition module 303 and threshold determination module 304；Wherein,
Module 301 is set up in section, for setting up the section group that one group of area is gradually increased, prints for described 3D
Machine prints one by one；
Demoulding setting module 302, enters the section in described section group for setting use the first stripping means
The row demoulding processes；
Data obtaining module 303, for obtaining the information of last safe demoulding correspondence section；
Threshold determination module 304, for calculating the area of last safe demoulding correspondence section, as institute
State safe area threshold.
In above-mentioned characteristic test device, section is set up module 301 and is included:
Model acquiring unit, for obtaining an empirical numerical model, the level of described empirical numerical model is cut
Face area is gradually increased from bottom to top；
Slicing treatment unit, for described empirical numerical model is carried out slicing treatment, obtain one group of area by
Cumulative big section group.
Further, said apparatus may also include that
Precision controlling module, for adjusting the difference in areas between cutting into slices in described section group, controls measuring accuracy.
Above-mentioned characteristic test device, described precision controlling module comprises the steps that
Interval adjustment unit, for adjusting slice spacings when carrying out described slicing treatment；
Slope, than adjustment unit, for when described empirical numerical model is chamfered edge platform, adjusts described chamfered edge platform
Slope ratio；
First floor section adjustment unit, for when described empirical numerical model is chamfered edge platform, adjusts described chamfered edge
The first floor section area that platform is corresponding.
Above-mentioned modules and unit in actual applications, all can be by the host computers being positioned at 3D printer
Central processing unit (CPU), microprocessor (MPU), digital signal processor (DSP) or scene can
Programming gate array (FPGA) realizes.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or meter
Calculation machine program product.Therefore, the present invention can use hardware embodiment, software implementation or combine software and
The form of the embodiment of hardware aspect.And, the present invention can use and wherein include calculating one or more
The computer-usable storage medium of machine usable program code (includes but not limited to disk memory and optical storage
Device etc.) form of the upper computer program implemented.
The present invention is with reference to method, equipment (system) and computer program according to embodiments of the present invention
Flow chart and/or block diagram describe.It should be understood that can be by computer program instructions flowchart and/or side
Flow process in each flow process in block diagram and/or square frame and flow chart and/or block diagram and/or the knot of square frame
Close.Can provide these computer program instructions to general purpose computer, special-purpose computer, Embedded Processor or
The processor of other programmable data processing device is to produce a machine so that by computer or other can
The instruction that the processor of programming data processing equipment performs produces for realizing in one flow process or multiple of flow chart
The device of the function specified in flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions may be alternatively stored in and can guide computer or other programmable data processing device
In the computer-readable memory worked in a specific way so that be stored in this computer-readable memory
Instruction produces the manufacture including command device, and this command device realizes at one flow process of flow chart or multiple stream
The function specified in journey and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, makes
Sequence of operations step must be performed to produce computer implemented place on computer or other programmable devices
Reason, thus the instruction performed on computer or other programmable devices provides for realizing flow chart one
The step of the function specified in flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
Above-described all embodiments, only presently preferred embodiments of the present invention, it is not intended to limit this
Bright protection domain.
Claims (10)
1. the characteristic test method of a 3D printer, it is characterised in that described method includes:
Set up the section group that one group of area is gradually increased, print one by one for described 3D printer；
Set and use the first stripping means that the section in described section group is carried out demoulding process；
Obtain the information of last safe demoulding correspondence section；
Calculate the area of last safe demoulding correspondence section, as described safe area threshold.
Characteristic test method the most according to claim 1, it is characterised in that described set up one group of area by
Cumulative big section group includes:
Obtaining an empirical numerical model, the horizontal section area of described empirical numerical model the most gradually increases
Greatly；
Described empirical numerical model is carried out slicing treatment, obtains the section group that one group of area is gradually increased.
Characteristic test method the most according to claim 2, it is characterised in that described empirical numerical model bag
Include chamfered edge platform.
4. according to the characteristic test method described in any one of claims 1 to 3, it is characterised in that described characteristic
Method of testing includes:
Adjust the difference in areas between section, control characteristic measuring accuracy in described section group.
Characteristic test method the most according to claim 4, it is characterised in that described adjustment described section group
Difference in areas between middle section includes:
Adjust slice spacings when carrying out described slicing treatment.
Characteristic test method the most according to claim 4, it is characterised in that when described empirical numerical model
During for chamfered edge platform, in described adjustment described section group, the difference in areas between section includes:
Adjust the slope ratio of described chamfered edge platform；And/or
Adjust the first floor section area that described chamfered edge platform is corresponding.
7. the characteristic test device of a 3D printer, it is characterised in that described device includes: section is set up
Module, demoulding setting module, data obtaining module and threshold determination module；Wherein,
Module is set up in section, for setting up the section group that one group of area is gradually increased, for described 3D printer by
One prints；
Demoulding setting module, carries out the demoulding for setting use the first stripping means to the section in described section group
Process；
Data obtaining module, for obtaining the information of last safe demoulding correspondence section；
Threshold determination module, for calculating the area of last safe demoulding correspondence section, as described safety
Area threshold.
Characteristic test device the most according to claim 7, it is characterised in that module bag is set up in described section
Include:
Model acquiring unit, for obtaining an empirical numerical model, the horizontal cross-section of described empirical numerical model
Area is gradually increased from bottom to top；
Slicing treatment unit, for described empirical numerical model is carried out slicing treatment, obtains one group of area gradually
The section group increased.
Characteristic test device the most according to claim 7, it is characterised in that described device also includes:
Precision controlling module, for adjusting the difference in areas between cutting into slices in described section group, controls measuring accuracy.
Characteristic test device the most according to claim 9, it is characterised in that described precision controlling module
Including:
Interval adjustment unit, for adjusting slice spacings when carrying out described slicing treatment；
Slope, than adjustment unit, for when described empirical numerical model is chamfered edge platform, adjusts the slope of described chamfered edge platform
Ratio；
First floor section adjustment unit, for when described empirical numerical model is chamfered edge platform, adjusts described chamfered edge platform
Corresponding first floor section area.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109130191A (en) * | 2018-07-27 | 2019-01-04 | 北京鉴衡认证中心有限公司 | Test method, device and the computer equipment of 3D printer performance |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5559712A (en) * | 1992-09-18 | 1996-09-24 | Kabushiki Kaisha Toshiba | Three-dimensional model forming device |
| JP2012506326A (en) * | 2008-10-20 | 2012-03-15 | スリーディー システムズ インコーポレーテッド | Actinic intensity profile compensation for 3D modeling equipment |
| CN203994734U (en) * | 2014-09-05 | 2014-12-10 | 宁波市鄞州智造数字科技有限公司 | The demoulding sunk type workbench of DLP photocuring 3D printer |
| CN104626586A (en) * | 2015-01-28 | 2015-05-20 | 东莞理工学院 | Photo-curing molding method based on DMD (digital micro-mirror device) |
-
2015
- 2015-06-02 CN CN201510296111.6A patent/CN106273445B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5559712A (en) * | 1992-09-18 | 1996-09-24 | Kabushiki Kaisha Toshiba | Three-dimensional model forming device |
| JP2012506326A (en) * | 2008-10-20 | 2012-03-15 | スリーディー システムズ インコーポレーテッド | Actinic intensity profile compensation for 3D modeling equipment |
| CN203994734U (en) * | 2014-09-05 | 2014-12-10 | 宁波市鄞州智造数字科技有限公司 | The demoulding sunk type workbench of DLP photocuring 3D printer |
| CN104626586A (en) * | 2015-01-28 | 2015-05-20 | 东莞理工学院 | Photo-curing molding method based on DMD (digital micro-mirror device) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109130191A (en) * | 2018-07-27 | 2019-01-04 | 北京鉴衡认证中心有限公司 | Test method, device and the computer equipment of 3D printer performance |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A Method and Device for Testing the Characteristics of a 3D Printer Effective date of registration: 20230911 Granted publication date: 20180504 Pledgee: Bank of Nanjing Limited by Share Ltd. Suzhou branch Pledgor: SUZHOU DAYE 3D PRINTING TECHNOLOGY CO.,LTD. Registration number: Y2023980056065 |