CN105095155B - A kind of computational methods of 3D printing model consumptive material - Google Patents
A kind of computational methods of 3D printing model consumptive material Download PDFInfo
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Abstract
The present invention provides a kind of computational methods of 3D printing model consumptive material, comprises the following steps：（1）, modeling；（2）Determine on threedimensional model along the longest edge between Z axis any two points；（3）Threedimensional model is divided into discrete layer；（4）Build standard square body；（5）Standard square body is gradually arranged on the discrete layer, Part I is marked；（6）Part II is marked, stretching Part II is less than the length of side of standard cube, and calculates the volume of Part II；（7）The volume of Part I and Part II is calculated respectively；（8）3D printing model consumptive material usage amount is calculated according to the volume of threedimensional model.The computational methods of the 3D printing model consumptive material that the present invention is provided, it is to avoid accuracy is not high when calculating the usage amount of 3D printing consumptive material, the big defect of consumptive material wastage.Simultaneously, it is to avoid use complicated algorithm, computational efficiency is improved.
Description
Technical field
The present invention relates to 3D printing technique field, more particularly to a kind of computational methods of 3D printing model consumptive material.
Background technology
3D printing technique, also known as RP technique, are a kind of high-new manufacturing technologies based on material stacking method.Specifically
For, RP technique is exactly the data using threedimensional model, by rapidform machine, by material stacking from level to level into reality
Body prototype.
Model or the shape of part that 3D printer can be processed as needed, one is made every time has certain small thickness
The section of degree and given shape, then successively bonds them get up again, obtains the three-dimensional model or part for needing to manufacture.Generally
For flow be the file format that 3D printer support is converted into by computer photograph threedimensional model file, beaten in 3D
Consumptive material is put into print machine can just proceed by making.3D printing technique of the prior art has tended to ripe, except common
Stereolithography apparatus method, Selective Laser Sintering, layer separated growth method, fused deposition modeling method etc., more realize energy
Enough fine-resolutions that 600dpi is realized on 0.01mm thickness in monolayer.The commercial Application of 3D printing technique is more and more,
The proportion that consumables cost is occupied in whole technique is also increasing.For different processing methods, the consumptive material of consumption is also not
With.
The calculating of current 3D printing consumptive material is usually directly to calculate that the volume of part, model need to be printed, and is multiplied by consumptive material density
Obtain weight.But, the basic mode that actually 3D printer creates object is to deposit from lower to upper from level to level, calculates 3D objects
During the consumptive material of consumption, it can only also be calculated when running into irregular part according to complete structure.The weight actually calculated
Much larger than the consumptive material weight of actual use, while cost is increased, it also result in unnecessary consumptive material and waste.
The content of the invention
The present invention provides a kind of computational methods of 3D printing model consumptive material, it is intended to improve 3D printing model consumptive material computational accuracy
And computational efficiency.
The present invention provides a kind of computational methods of 3D printing model consumptive material, comprises the following steps：
（1）Set up the threedimensional model of print object；
（2）Determine on the threedimensional model along the longest edge L between Z axis any two pointsmax；
（3）Along the equidistant discrete longest edge L of Z-directionmax, the threedimensional model is divided into equal discrete of floor height
Layer；
（4）Using the floor height of the discrete layer as the length of side, standard square body is built, and define the length of side of the standard square body
For 1, volume is V0；
（5）Multiple standard square bodies are gradually arranged on the discrete layer along X-axis or Y-axis；If a mark
A part for quasi- square and the discrete layer is completely superposed, then it is Part I to mark the part, and is added up described first
The quantity divided；
（6）If a part for the discrete layer is less than the volume of standard square body, the part is marked to be
Part II；A summit of each Part II is set to be overlapped with a summit of the standard square body；Stretching institute
Side of the Part II less than the standard square body length of side is stated until equal with the length of side of the standard square body, by tension values with
The length of side of the standard square body is compared and obtains ratio value U;The volume of the Part II is V2 ’= V0-V0*U3, U ∈ { U1、
U2, …, Un};
（7）The volume of multiple Part I and the volume of multiple Part II, the three-dimensional mould are calculated respectively
The volume of type is equal to the volume of multiple Part I and the volume sum of multiple Part II；
（8）The weight of 3D printing consumptive material is calculated according to the volume of the threedimensional model.
Further, the discrete layer at least includes one layer.
Further, step（5）It is middle that multiple standard squares are gradually arranged on the discrete layer along X-axis or Y-axis
During body, a line of the standard square body is overlapped with the height of the discrete layer.
Further, the discrete layer is arranged in order from bottom to top, corresponding, and the standard is successively arranged from bottom to top
Square.
Further, by step（5）In multiple Part I for marking polymerize, multiple Part I after polymerization
Volume be V1；The quantity for defining the Part I is N, and N is positive integer, V1=N* V0 3。
Further, by step（6）Multiple Part II of middle mark are polymerize, multiple second after polymerization
The volume divided is V2；The quantity for defining the Part II is M, and M is positive integer, V2= M* （V0-V0*U3）, U ∈ { U1、
U2, …, Un}。
Further, the standard square body is stored as X when setting up the threedimensional model of print object: Y: Z: V0
The character string of form, wherein X, Y, Z are the floor height of the discrete layer.
The computational methods of 3D printing model consumptive material provided by the present invention, by pretreatment, three steps of segmentation and polymerization,
Avoid the accuracy when calculating the usage amount of 3D printing consumptive material not high, the big defect of consumptive material wastage.Simultaneously, it is to avoid use
Complicated algorithm, improves computational efficiency.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of flow chart of embodiment of computational methods of 3D printing model consumptive material proposed by the invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Shown in Figure 1, the computational methods for the 3D printing model consumptive material that the present embodiment is provided mainly include pretreatment, divided
Cut and polymerize three phases.
Specifically, pretreatment stage comprises the following steps：
S1, treat print object carry out three-dimensional modeling, obtain the threedimensional model under the corresponding perspective projection of object to be printed.
For complicated object to be printed, a series of subobjects can also be divided into.The size of subobject is approximate, and easily group
Dress and printing.
S2, is determined on threedimensional model or subobject along the longest edge L between Z axis any two pointsmax。
S3, along the longest edge L of Z-direction equidistant discrete threedimensional model or subobjectmax, by threedimensional model or subobject
It is divided into the equal discrete layer of floor height.The number of plies of discrete layer is determined according to the size of threedimensional model or subobject, is preferably provided with
Multilayer.For object to be printed simple in construction, layer scattering layer is also possible to realize same function.
S4, using the floor height of the discrete layer as the length of side, builds standard square body.
Then enter the segmentation stage, the segmentation stage do not imply that on essential meaning by three dimensional object or its subobject again
Split to next stage.Why it is referred to as the segmentation stage, its object is to using standard square body as seed, to by pretreatment rank
The threedimensional model of section is divided, and farthest calculates threedimensional model or the volume of its subobject with standard square body, it is to avoid
According to the volume of complete Structure Calculation irregularities, unnecessary consumptive material is caused to waste.
Specifically, the segmentation stage is divided into following steps：
S5, because the technique of 3D printing is typically layering progress from bottom to top, so, on the basis of Z axis, correspondence
, the division of each discrete layer is carried out successively from bottom to top using standard square body.For ease of processing, standard square body
The length of side is set as 1.It should be noted that, this length of side does not imply that the weights and measures on practical significance, but one it is similar with it is vectorial
Parameter, be convenient for the contrast of next step.
Since the discrete layer of basecoat, multiple standard squares are gradually arranged on the discrete layer along X-axis or Y-axis
Body.The a line of standard square body is kept to be overlapped with the height of the discrete layer.If a standard square body is discrete with this
A part for layer is completely superposed, then the part is marked as Part I, can also be referred to as criteria section.Define Part I
Quantity be N, N is positive integer.As long as the part on discrete layer is marked as Part I, N value is Jia 1.
S6, if during arrangement, a part for the discrete layer is less than the volume of a standard square body,
It is Part II then to mark the part.One summit of Part II is overlapped with a summit of standard square body.Due to second
Partial volume is less than the volume of standard square body, so the length of side of Part II at least a line is less than standard square body
The length of side.The side that the Part II is less than the standard square body is stretched, until less than the Part II of the standard square body
Side it is equal with the length of side of standard square body.Tension values are obtained into ratio value U, U ∈ { U compared with the length of side of standard square body1、
U2, …, Un, the volume of the Part II is V2 ’= V0-V0*U3.The quantity for defining Part II is M, and M is positive integer, as long as
A part on discrete layer is marked as Part II, and M value is Jia 1.For the ease of relatively and calculating tension values, the standard
Square is just to be stored as X setting up the threedimensional model of print object or its subobject: Y: Z: V0The character string of form, its
Middle X, Y, Z are the floor height of the discrete layer.
Next stage after segmentation is polymerization stage.
It is specifically that the volume of Part I and Part II is calculated, comprises the following steps：
S7, by step（5）In multiple Part I for marking polymerize, the volume of multiple Part I after polymerization
For V1；The quantity for defining the Part I is N, and N is positive integer, V1=N* V0 3.By step（6）Multiple the of middle mark
Two parts are polymerize, and the volume of multiple Part II after polymerization is V2；The quantity for defining the Part II is M, and M is just
Integer, V2= M* （V0-V0*U3）, U ∈ { U1、U2, …, Un}.The volume of threedimensional model or its subobject is V=V1 + V2 。
S8, the weight of 3D printing consumptive material is calculated according to the volume of the threedimensional model.No matter selected consumptive material when coiled material
Or powder, you can with the weight of 3D printing consumptive material needed for being calculated by bulk density formula.
The computational methods for the 3D printing model consumptive material that the present embodiment is provided, pass through pretreatment, three steps of segmentation and polymerization
Suddenly, it is to avoid when calculating the usage amount of 3D printing consumptive material, accuracy is not high, consumptive material wastage big defect.Simultaneously, it is to avoid
Using complicated algorithm, computational efficiency is improved.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (7)
1. a kind of computational methods of 3D printing model consumptive material, it is characterised in that comprise the following steps：
（1）Set up the threedimensional model of print object；
（2）Determine on the threedimensional model along the longest edge L between Z axis any two pointsmax；
（3）Along the equidistant discrete longest edge L of Z-directionmax, the threedimensional model is divided into the equal discrete layer of floor height；
（4）Using the floor height of the discrete layer as the length of side, standard square body is built, and it is 1 to define the length of side of the standard square body,
Volume is V0；
（5）Multiple standard square bodies are gradually arranged on the discrete layer along X-axis or Y-axis；If a standard is just
Cube and a part for the discrete layer are completely superposed, then it is Part I to mark the part, and the Part I that adds up
Quantity；
（6）If a part for the discrete layer is less than the volume of a standard square body, it is second to mark the part
Part；A summit of each Part II is set to be overlapped with a summit of the standard square body；Stretch described
Two parts are less than the side of the standard square body length of side until equal with the length of side of the standard square body, by tension values with it is described
The length of side of standard square body is compared and obtains ratio value U;The volume of the Part II is V2 ’= V0-V0*U3, U ∈ { U1、
U2, …, Un};
（7）The volume of multiple Part I and the volume of multiple Part II are calculated respectively, the threedimensional model
Volume is equal to the volume of multiple Part I and the volume sum of multiple Part II；
（8）The weight of 3D printing consumptive material is calculated according to the volume of the threedimensional model.
2. the computational methods of 3D printing model consumptive material according to claim 1, it is characterised in that the discrete layer is at least wrapped
Include one layer.
3. the computational methods of 3D printing model consumptive material according to claim 2, it is characterised in that step（5）It is middle along X-axis or
When Y-axis gradually arranges multiple standard square bodies on the discrete layer, a line of the standard square body with it is described from
The floor height for dissipating layer is overlapped.
4. the computational methods of 3D printing model consumptive material according to claim 3, it is characterised in that the discrete layer from it is lower to
On be arranged in order, it is corresponding, the standard square body is successively arranged from bottom to top.
5. the computational methods of 3D printing model consumptive material according to claim 4, it is characterised in that by step（5）Middle mark
The multiple Part I gone out are polymerize, and the volume of multiple Part I after polymerization is V1；Define the number of the Part I
Measure as N, N is positive integer, V1=N* V0 3 。
6. the computational methods of 3D printing model consumptive material according to claim 5, it is characterised in that by step（6）Middle mark
Multiple Part II at place are polymerize, and the volume of multiple Part II after polymerization is V2；Define the number of the Part II
Measure as M, M is positive integer, V2=M* （V0-V0*U3）, U ∈ { U1、U2, …, Un} 。
7. the computational methods of the 3D printing model consumptive material according to any one of claim 1 to 6, it is characterised in that the mark
Quasi- square is stored as X when setting up the threedimensional model of print object: Y: Z: V0The character string of form, wherein X, Y, Z are institute
State the floor height of discrete layer.
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| CN106738934B (en) * | 2016-12-28 | 2021-03-05 | 海尔集团技术研发中心 | 3D printing model consumable consumption calculation method and system |
| CN113459502B (en) * | 2021-06-25 | 2022-12-13 | 广东药科大学 | Multi-medicine formula combined medicine three-dimensional forming printing method and device |
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