CN106273445B - The characteristic test method and device of a kind of 3D printer - Google Patents
The characteristic test method and device of a kind of 3D printer Download PDFInfo
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- CN106273445B CN106273445B CN201510296111.6A CN201510296111A CN106273445B CN 106273445 B CN106273445 B CN 106273445B CN 201510296111 A CN201510296111 A CN 201510296111A CN 106273445 B CN106273445 B CN 106273445B
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- 238000010998 test method Methods 0.000 title claims abstract description 16
- 238000005520 cutting process Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 238000010146 3D printing Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 11
- 238000007639 printing Methods 0.000 description 11
- 238000004590 computer program Methods 0.000 description 7
- 238000013178 mathematical model Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material 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
- 230000003700 hair damage Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Abstract
The invention discloses a kind of characteristic test method of 3D printer, including：The section group that one group of area gradually increases is established, is printed one by one for the 3D printer；Setting carries out demoulding processing using the first stripping means to the section in the section group；Obtain the information of the corresponding section of the last time safety demoulding；The area of the corresponding section of the last time safety demoulding is calculated, as the safe area threshold.The present invention further simultaneously discloses a kind of characteristic test device of 3D printer.
Description
Technical field
The present invention relates to the characteristic test method and device of 3D printing technique field, more particularly to a kind of 3D printer.
Background technology
In liquid container (hopper) bottom, curing reaction occurs in container bottom lower light projector liquid 3D printing technique light source,
Need upwards to lift cured printer model after having cured one layer, it is peeled off from hopper bottom, that is, carry out at the demoulding
Reason, to continue next layer of printer model.
A kind of stripping means are：Control print platform rise, drive printer model rise therewith, directly by printer model from
Hopper bottom pulls up, referred to herein as the first stripping means.This stripping means are a risk that, knockout course be it is rigid,
The damage of printer model is be easy to cause, i.e., cannot be demoulded safely, reduces printing success rate.Cut especially for area is larger
Piece, demoulds in this way, as a consequence it is hardly possible to demoulds safely.
Then many 3D printers are designed with the slant-pull structure of assisted demoulding, there is provided another stripping means；Specially：Control
Hopper processed is first slowly tilted down along side --- control print platform rises certain altitude again ---, and control hopper recovers horizontal,
Referred to herein as the second stripping means.This stripping means make the separation process of printer model and hopper bottom from printer model
One side edge starts, and gradually slowly completes to peel off, greatly improves demoulding security.But this stripping means is time-consuming more, greatly
Width increase makes the time needed for whole printer model.
More preferably scheme be for area it is less section the demoulding when use the first stripping means, for area compared with
Big section uses the second stripping means in the demoulding.But the premise so done is that 3D printer to be obtained uses the first demoulding side
When formula is demoulded, the maximum section area value that can demould safely, referred to herein as safe area threshold.The safe area threshold
Value is not only related with the structure of 3D printer, and printed material, hopper design, moulding process all have an impact the threshold value, therefore,
For same 3D printer under different print conditions, safe area threshold is it can also happen that change.Herein will printing
The condition that material, hopper design, moulding process etc. influence the safe area threshold of 3D printer is known as print conditions.
Therefore safe area threshold be a 3D printer under certain print conditions, the first stripping means can be used
The largest face product value demoulded safely.This characteristic of 3D printer is known, to instructing 3D printer to carry out 3D modellings
It is of great significance.
The content of the invention
To solve existing technical problem, an embodiment of the present invention is intended to provide a kind of characteristic test side of 3D printer
Method and device, can test out 3D printer corresponding safe area threshold under specific print conditions.
What the technical solution of the embodiment of the present invention was realized in：
The embodiment of the present invention provides a kind of characteristic test method of 3D printer, and this method includes：
The section group that one group of area gradually increases is established, is printed one by one for the 3D printer；
Setting carries out demoulding processing using the first stripping means to the section in the section group；
Obtain the information of the corresponding section of the last time safety demoulding；
The area of the corresponding section of the last time safety demoulding is calculated, as the safe area threshold.
It is described to establish the section group that one group of area gradually increases and include in such scheme：
An empirical numerical model is obtained, the horizontal section area of the empirical numerical model gradually increases from bottom to top；
Slicing treatment is carried out to the empirical numerical model, obtains the section group that one group of area gradually increases.
In such scheme, the empirical numerical model includes chamfered edge platform.
In such scheme, the characteristic test method includes：
The difference in areas between cutting into slices in the section group is adjusted, controls measuring accuracy.
In such scheme, the difference in areas between cutting into slices in the adjustment section group includes：
Adjustment carries out the slice spacings during slicing treatment.
In such scheme, when the empirical numerical model is chamfered edge platform, between cutting into slices in the adjustment section group
Difference in areas include：
Adjust the slope ratio of the chamfered edge platform；And/or
Adjust the corresponding first floor section area of the chamfered edge platform.
The embodiment of the present invention provides also a kind of characteristic test device of 3D printer, which includes：Section establish module,
Demould setting module, data obtaining module and threshold determination module；Wherein,
Module is established in section, and the section group gradually increased for establishing one group of area, prints one by one for the 3D printer；
Setting module is demoulded, the section in the section group is carried out at the demoulding using the first stripping means for setting
Reason；
Data obtaining module, for obtaining the information of the corresponding section of the last time safety demoulding；
Threshold determination module, for calculating the area of the corresponding section of the last time safety demoulding, as the safe area
Threshold value.
In such scheme, module is established in the section to be included：
Model acquiring unit, for obtaining an empirical numerical model, the horizontal section area of the empirical numerical model
Gradually increase from bottom to top；
Slicing treatment unit, for carrying out slicing treatment to the empirical numerical model, obtains one group of area and gradually increases
Section group.
In such scheme, described device further includes：
Precision controlling module, for adjusting the difference in areas between cutting into slices in the section group, controls measuring accuracy.
In such scheme, the precision controlling module includes：
Interval adjustment unit, the slice spacings during slicing treatment are carried out for adjusting；
Slope is than adjustment unit, for when the empirical numerical model is chamfered edge platform, adjusting the slope ratio of the chamfered edge platform；
First floor section adjustment unit, corresponds to for when the empirical numerical model is chamfered edge platform, adjusting the chamfered edge platform
The first floor section area.
The characteristic test method and device for the 3D printer that the embodiment of the present invention is provided, it is gradual by printing one group of area
The section group of increase, and the stripping means of all sections in the section group are all set into the first stripping means of position, in actual printing
In, the corresponding area cut into slices of the last time safety demoulding is got, so as to test to obtain the 3D printer in certain print conditions
Lower corresponding safe area threshold；Also, the test result can also be controlled by adjusting difference in areas between section
Measuring accuracy, thus, can get more reliable more accurate safe area threshold.
Brief description of the drawings
Fig. 1 realizes flow diagram for the characteristic test method of 3D printer provided in an embodiment of the present invention；
Fig. 2 is the chamfered edge platform schematic diagram shown in the embodiment of the present invention；
Fig. 3 is the composition structure diagram of the characteristic test device of 3D printer provided in an embodiment of the present invention.
Embodiment
In order to illustrate the embodiments of the present invention more clearly and technical solution, below in conjunction with accompanying drawings and embodiments to the present invention
Technical solution be described in detail, it is clear that described embodiment is the part of the embodiment of the present invention, rather than entirely
Portion's embodiment.Based on the embodiment of the present invention, those of ordinary skill in the art are obtained without creative efforts
The every other embodiment obtained, belongs to the scope of protection of the invention.
In embodiments of the present invention, 3D printer is lower light projector liquid 3D printer, including host computer and slave computer, upper
Machine is used to 3D mathematical models to be printed carrying out slicing treatment, forms the section of one group of two dimension, and generates printing control information；
Slave computer is used for according to control information, and corresponding mathematical model prints the corresponding section of mathematical model, completion pair one by one from bottom to top
The making of physical print model.Here, the control information can be transmitted in the form of GCODE files.
Fig. 1 realizes flow diagram for the characteristic test method of 3D printer provided in an embodiment of the present invention, such as Fig. 1 institutes
Show, this method includes：
Step 101, the section group that one group of area gradually increases is established, is printed one by one for the 3D printer；
Specifically, establishing the section group that one group of area gradually increases in host computer, printed one by one for slave computer.
In order to quick obtaining to the section group met the requirements, it is preferred that it is above-mentioned establish that one group of area gradually increases cut
Piece group includes：
An empirical numerical model is obtained, the horizontal section area of the empirical numerical model gradually increases from bottom to top；
Slicing treatment is carried out to the empirical numerical model, obtains the section group that one group of area gradually increases.
Specifically, user can input or directly establish an empirical numerical model in host computer, as long as the empirical numerical mould
The horizontal section area of type is gradually to increase from bottom to top；Then, host computer cuts the empirical numerical model
Piece processing, can obtain the section group that one group of area gradually increases.
Here, it is gradually to increase from bottom to top why to require the horizontal section area of empirical numerical model, is because logical
Normal 3D printer is the printer model of the printing and making entity since the bottom of mathematical model, therefore, if 3D printer be from
The top of mathematical model starts the printer model of printing and making entity, then the requirement to empirical numerical model is：Horizontal cross-section face
Product is to be gradually reduced from bottom to top.
Further, the area of section is calculated for convenience, and chamfered edge platform may be selected as empirical numerical model.
Further, positive truncated rectangular pyramids may be selected as empirical numerical model, as shown in Fig. 2, the positive truncated rectangular pyramids
Slope ratio is t, and bottom 6 is that the length of side is LbSquare, the floor height of printing is h when slicing treatment (i.e., the spacing between section), then
N-th layer section area be：
Step 102, set and demoulding processing is carried out to the section in the section group using the first stripping means；
Specifically, host computer is set using the first stripping means in printing control information to the section in the section group
Carry out demoulding processing.
In this way, slave computer will according to printing control information, after any section in having printed the section group, all
One stripping means carry out demoulding processing.With the continuous increase of section area, knockout course will be further difficult, it is assumed that prints to the
It cannot be demoulded safely when can safely being demoulded when k layers, and arrive+1 layer of kth, i.e., the demoulding is so that printer model hair
Damage is given birth to.Then the section corresponding to kth layer is the corresponding section of the last time safety demoulding.
Step 103, the information of the corresponding section of the last time safety demoulding is obtained；
Specifically, host computer obtains the information of the corresponding section of the last time safety demoulding.
Here, the information of the corresponding section of the last time safety demoulding can be that the corresponding numbering of section or level number etc. can be marked
Know the information of section.These information, can be that after user observes printer model damage, host computer is inputed to after voluntarily determining,
It can also be that demoulding situation is fed back to host computer by slave computer, be obtained after being judged by host computer.
Step 104, the area of the corresponding section of the last time safety demoulding is calculated, as the safe area threshold.According to
The slice information that step 103 is got, host computer can calculate the area of the corresponding section of the last time safety demoulding, will calculate
The area value arrived is as tested 3D printer possessed safe area threshold under the print conditions of test.
In actual production process, using the safe area threshold as foundation, section is divided according to the size of area
Class：Area is divided into one kind less than or equal to safe area threshold；Area is divided into another kind of more than safe area threshold.For difference
The section of classification can set different stripping means.
Obviously, the safe area threshold according to said method tested is less than the safe area threshold of 3D printer reality, is
Approximation.And the safe area threshold that test obtains is less than most less than the difference between 3D printer and the safe area threshold of reality
The corresponding section of the once safety demoulding and the difference in areas after it between section afterwards.Therefore, measuring accuracy is controlled, as long as adjustment institute
State the difference in areas between cutting into slices in section group.
In the case of by carrying out slicing treatment to empirical numerical model to obtain section group, by adjusting cutting into slices
Slice spacings (printing floor height) during processing, you can the difference in areas between cutting into slices in the section group is adjusted, so as to reach control
The purpose of measuring accuracy processed.
In one embodiment, positive truncated rectangular pyramids as shown in Figure 2 are selected as empirical numerical model, and print to kth
Cannot be demoulded safely when can safely being demoulded when layer, and arrive+1 layer of kth, it is determined that safe area threshold be
Sk, and+1 layer of kth and the difference in areas of kth layer are：
Understood according to formula (2), except adjustment prints floor height h, can also be cut by adjusting the slope of chamfered edge platform than t or the first floor
The length of side of piece is Lb(area for adjusting first floor section), to adjust the difference in areas between section.
Fig. 3 is the composition structure diagram of the characteristic test device of 3D printer provided in an embodiment of the present invention, such as Fig. 3 institutes
Show, which includes：Module 301, demoulding setting module 302, data obtaining module 303 and threshold value are established in section
Determining module 304；Wherein,
Module 301 is established in section, and the section group gradually increased for establishing one group of area, beats one by one for the 3D printer
Print；
Setting module 302 is demoulded, the section in the section group is demoulded using the first stripping means for setting
Processing；
Data obtaining module 303, for obtaining the information of the corresponding section of the last time safety demoulding；
Threshold determination module 304, for calculating the area of the corresponding section of the last time safety demoulding, as the safety surface
Product threshold value.
In above-mentioned characteristic test device, module 301 is established in section to be included：
Model acquiring unit, for obtaining an empirical numerical model, the horizontal section area of the empirical numerical model
Gradually increase from bottom to top；
Slicing treatment unit, for carrying out slicing treatment to the empirical numerical model, obtains one group of area and gradually increases
Section group.
Further, above device may also include：
Precision controlling module, for adjusting the difference in areas between cutting into slices in the section group, controls measuring accuracy.
Above-mentioned characteristic test device, the precision controlling module may include：
Interval adjustment unit, the slice spacings during slicing treatment are carried out for adjusting；
Slope is than adjustment unit, for when the empirical numerical model is chamfered edge platform, adjusting the slope ratio of the chamfered edge platform；
First floor section adjustment unit, corresponds to for when the empirical numerical model is chamfered edge platform, adjusting the chamfered edge platform
The first floor section area.
Above-mentioned modules and unit in practical applications, can be by the centres of the host computer positioned at 3D printer
Device (CPU), microprocessor (MPU), digital signal processor (DSP) or field programmable gate array (FPGA) is managed to realize.
It should be understood by those skilled in the art that, the embodiment of the present invention can be provided as method, system or computer program
Product.Therefore, the shape of the embodiment in terms of the present invention can use hardware embodiment, software implementation or combination software and hardware
Formula.Moreover, the present invention can use the computer for wherein including computer usable program code in one or more to use storage
The form for the computer program product that medium is implemented on (including but not limited to magnetic disk storage and optical memory etc.).
The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that it can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or square frame in journey and/or square frame and flowchart and/or the block diagram.These computer programs can be provided
The processors of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that the instruction performed by computer or the processor of other programmable data processing devices, which produces, to be used in fact
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, thus in computer or
The instruction performed on other programmable devices is provided and is used for realization in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a square frame or multiple square frames.
Above-described all embodiments, are only presently preferred embodiments of the present invention, are not intended to limit the guarantor of the present invention
Protect scope.
Claims (10)
- A kind of 1. characteristic test method of 3D printer, it is characterised in that the described method includes：The section group that one group of area gradually increases is established, is printed one by one for the 3D printer；Setting carries out demoulding processing using the first stripping means to the section in the section group；Wherein, first demoulding side Formula is：Control the platform of the 3D printing to rise, drive printer model to rise therewith, directly by the printer model from hopper bottom Portion pulls up；Obtain the information of the corresponding section of the last time safety demoulding；The area of the corresponding section of the last time safety demoulding is calculated, as the safe area threshold.
- 2. characteristic test method according to claim 1, it is characterised in that it is described establish that one group of area gradually increases cut Piece group includes：An empirical numerical model is obtained, the horizontal section area of the empirical numerical model gradually increases from bottom to top；Slicing treatment is carried out to the empirical numerical model, obtains the section group that one group of area gradually increases.
- 3. characteristic test method according to claim 2, it is characterised in that the empirical numerical model includes chamfered edge platform.
- 4. characteristic test method according to any one of claims 1 to 3, it is characterised in that the characteristic test method bag Include：Adjust the difference in areas between cutting into slices in the section group, control characteristic measuring accuracy.
- 5. characteristic test method according to claim 4, it is characterised in that between cutting into slices in the adjustment section group Difference in areas include：Adjustment carries out the slice spacings during slicing treatment.
- 6. characteristic test method according to claim 4, it is characterised in that when the empirical numerical model is chamfered edge platform When, the difference in areas adjusted between cutting into slices in the section group includes：Adjust the slope ratio of the chamfered edge platform；And/orAdjust the corresponding first floor section area of the chamfered edge platform.
- 7. a kind of characteristic test device of 3D printer, it is characterised in that described device includes：Module is established in section, the demoulding is set Cover half block, data obtaining module and threshold determination module；Wherein,Module is established in section, and the section group gradually increased for establishing one group of area, prints one by one for the 3D printer；Setting module is demoulded, demoulding processing is carried out to the section in the section group using the first stripping means for setting；Its In, first stripping means are：Control the platform of the 3D printing to rise, drive printer model to rise therewith, directly by institute Printer model is stated to pull up from hopper bottom；Data obtaining module, for obtaining the information of the corresponding section of the last time safety demoulding；Threshold determination module, for calculating the area of the corresponding section of the last time safety demoulding, as the safe area threshold.
- 8. characteristic test device according to claim 7, it is characterised in that module is established in the section to be included：Model acquiring unit, for obtaining an empirical numerical model, the horizontal section area of the empirical numerical model is under And upper gradually increase；Slicing treatment unit, for carrying out slicing treatment to the empirical numerical model, obtain that one group of area gradually increases cuts Piece group.
- 9. the characteristic test device according to claim 7 or 8, it is characterised in that described device further includes：Precision controlling module, for adjusting the difference in areas between cutting into slices in the section group, controls measuring accuracy.
- 10. characteristic test device according to claim 9, it is characterised in that the precision controlling module includes：Interval adjustment unit, the slice spacings during slicing treatment are carried out for adjusting；Slope is than adjustment unit, for when the empirical numerical model is chamfered edge platform, adjusting the slope ratio of the chamfered edge platform；First floor section adjustment unit, for when the empirical numerical model is chamfered edge platform, adjusting the corresponding head of the chamfered edge platform Layer section area.
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| US8048359B2 (en) * | 2008-10-20 | 2011-11-01 | 3D Systems, Inc. | Compensation of actinic radiation intensity profiles for three-dimensional modelers |
| 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 |
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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 |
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