Background technique
Increasing material manufacturing, that is, 3D printing, 3D printing are using metal powder or non-metal powder as raw material, and laser is energy source,It is printed along each slicing layer fusing powder of the threedimensional model of object with realizing, then obtains integrally formed object.However,The prior art is easy to appear the situation of powder supply deficiency, needs in this case during printing to each slicing layerAmount of powder needed for each slicing layer prints manually is constantly regulate, to complete object printing, since whole printing process needs manuallyContinuous intervention, then lead to waste of human resource；In order to avoid in the insufficient situation of powder, when printing current slice layer,Current slice layer is printed using numeric ratio biggish amount of powder, however which can exist since amount of powder is excessively ledThe problem of causing recovery processing heavy workload.
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In consideration of it, the embodiment of the present application is designed to provide a kind of determining amount of powder and 3D printing method, apparatus and depositsStorage media so that 3D printing equipment can based on the respective corresponding powder of required amount of powder of each slicing layer of printing objectsRealization automation printing, manual intervention is not necessarily in print procedure, saves human resources, while also avoiding scarce powder or powder excessiveThe drawbacks of.
In a first aspect, the embodiment of the present application provides a kind of 3D printing method, it is applied to 3D printing equipment, the method packetIt includes: receiving and need to treat the print command that the model of printing objects is printed for characterizing；The print command is responded, is determinedThe current slice layer for currently needing to print in the model to be printed；Determine current powder needed for printing the current slice layerAmount, wherein current amount of powder needed for the current slice layer is according to the cross-sectional area and slice thickness of the current slice layerIt determines；The powder amount controller of control instruction to the 3D printing equipment is sent according to the required current amount of powder, so thatThe powder amount controller control material cylinder exports powder corresponding with the required current amount of powder to the 3D printing equipmentPrint area；The entity of the current slice layer is printed using the powder.
During above-mentioned realization, need to treat printer model printed when, respond the print command, determine instituteCurrent amount of powder required for the current slice layer for currently needing to print in model to be printed is stated, is then worked as according to described requiredPreceding amount of powder sends the powder amount controller of control instruction to the 3D printing equipment, so that powder amount controller control materialCylinder exports powder corresponding with the required current amount of powder and prints to the print area of the 3D printing equipment currentlyThe entity of slicing layer, so that 3D printing equipment can be based on the respective required actual powder amount of each slicing layer with printing objectsCorresponding powder realizes automation printing, and manual intervention is not necessarily in print procedure, saves human resources, wherein described currentCurrent amount of powder needed for slicing layer is determined according to the cross-sectional area and slice thickness of the current slice layer, is guaranteed described requiredCurrent amount of powder determination precision, then avoid scarce powder or the excessive drawback of powder.
Based in a first aspect, determining current powder needed for printing the current slice layer in a kind of possible designThe step of amount includes: the cross-sectional area for obtaining the current slice layer；According to the cross-sectional area of the current slice layer and in advanceDetermining slice thickness determines current amount of powder needed for printing the current slice layer.
During above-mentioned realization, when the current amount of powder needed for needing to print the current slice layer, if described work asPreceding amount of powder does not predefine, then passes through the cross-sectional area and the predetermined slicing layer according to the current slice layerThickness determines current amount of powder needed for printing the current slice layer, to guarantee that the current amount of powder can be by accurately reallyIt makes.
Based in a first aspect, the cross-sectional area for obtaining the current slice layer includes: to obtain in a kind of possible designCharacterize multiple coordinate positions of the profile size of the current slice layer；Profile size based on the current slice layer it is multipleCoordinate position determines the cross-sectional area of the current slice layer.
During above-mentioned realization, since the profile size of current slice layer and the cross-sectional area of current slice layer are in justCorrelation, therefore, in the way of the area for solving the current slice layer in the way of integral compared with, by using described currentMultiple coordinate positions of the profile size of slicing layer can quickly obtain the cross-sectional area of the current slice layer.
Based in a first aspect, determining current powder needed for printing the current slice layer in a kind of possible designThe step of amount includes: the thickness for obtaining the current slice layer；Obtain the cross-sectional area of the current slice layer；Worked as according to describedThe cross-sectional area of the thickness of preceding slicing layer and the current slice layer determines current powder needed for printing the current slice layerEnd amount.
During above-mentioned realization, it needs to be determined that the current amount of powder, and the thickness of the current slice layer notWhen predefining, need to obtain the thickness of the current slice layer, then according to the thickness of the current slice layer and describedThe cross-sectional area of current slice layer accurately determines current amount of powder needed for printing the current slice layer.
Based in a first aspect, in a kind of possible design, receive for characterize need to treat the models of printing objects intoBefore the print command of row printing, the method also includes: obtain whole slicing layers of the model of the object to be printed；ForEach slicing layer in the whole slicing layer, cross-sectional area and slice thickness based on the slicing layer are determined to print the sliceAmount of powder needed for layer；Each slicing layer in whole slicing layers is closed with the corresponding of amount of powder needed for printing the slicing layerSystem is stored；It is corresponding, determine current amount of powder needed for printing the current slice layer, comprising: currently cut based on describedLamella finds out the required current amount of powder corresponding with the current slice layer from the corresponding relationship.
During above-mentioned realization, by determining to print the object to be printed before printing the model to be printedThe respective required amount of powder of each slicing layer in whole slicing layers of the model of body, and will each be cut in whole slicing layersLamella and the corresponding relationship of amount of powder needed for the printing slicing layer are stored, and are then being needed to the model to be printedWhen the current slice layer, directly found out from the corresponding relationship and the current slice layer is corresponding described required works asPreceding amount of powder improves printing effect.
Based in a first aspect, for each slicing layer in whole slicing layers, being based in a kind of possible designAfter the cross-sectional area and slice thickness of the slicing layer determine amount of powder needed for printing the slicing layer, the method is also wrappedInclude: the sum of amount of powder needed for determining printing whole slicing layers is total amount of powder；It is generated based on total amount of powderHint instructions, to prompt user that the powder of total amount of powder is injected the material cylinder.
During above-mentioned realization, before printing the model to be printed, determine needed for printing whole slicing layersThe sum of amount of powder be total amount of powder, and hint instructions are generated based on total amount of powder, with prompt user will it is described alwaysThe powder of amount of powder inject the material cylinder, guarantee the amount of powder injected inside material cylinder can just be used to print completion it is described toPrinter model, then guarantee be not in print procedure scarce powder or powder it is excessive and the problem of waste.
Based in a first aspect, sending control instruction according to the required current amount of powder in a kind of possible designTo the powder amount controller of the 3D printing equipment, so that powder amount controller control material cylinder output is worked as with described requiredThe corresponding powder of preceding amount of powder to the 3D printing equipment print area, comprising: obtain the cross-sectional area of the material cylinder；It is based onThe cross-sectional area of the material cylinder and current amount of powder needed for printing the current slice layer, determine with it is described required currentPowder height of the corresponding powder of amount of powder in the material cylinder；Control instruction is sent to the powder according to the powder heightAmount controller, so that the powder amount controller controls material cylinder output powder corresponding with the powder height to the 3DThe print area of printing device.
During above-mentioned realization, after the current amount of powder needed for determining to print the current slice layer, pass throughIt determines powder height of the powder corresponding with the required current amount of powder inside material cylinder, can then guarantee powder controlDevice processed can be controlled the material cylinder based on the powder height and accurately export powder corresponding with the required current amount of powderEnd to the 3D printing equipment print area.
Second aspect, the embodiment of the present application provide a kind of amount of powder and determine method, which comprises obtain described wait beatPrint whole slicing layers of the model of object；For each slicing layer in whole slicing layers, the transversal of the slicing layer is determinedThe thickness of area and the slicing layer；The thickness of cross-sectional area and the slicing layer based on the slicing layer, determines to print the sliceAmount of powder needed for layer, so that 3D printing equipment prints the slice based on powder corresponding with amount of powder needed for the slicing layerThe entity slice of layer.
During above-mentioned realization, for each slicing layer in whole slicing layers, based on the transversal of the slicing layerThe thickness of area and the slicing layer accurately determines amount of powder needed for printing the slicing layer, so that 3D printing equipment canThe entity slice that the slicing layer is printed based on powder corresponding with amount of powder needed for the slicing layer, then avoids 3D printingThe excessive drawback of scarce powder or powder in the process.
The third aspect, the embodiment of the present application provide a kind of 3D printing device, and described device includes: receiving unit, for connecingIt receives and needs to treat the print command that the model of printing objects is printed for characterizing；Response unit, for responding the printingInstruction, determines the current slice layer for currently needing to print in the model to be printed；Determination unit is worked as described in printing for determiningCurrent amount of powder needed for preceding slicing layer, wherein current amount of powder needed for the current slice layer is according to the current sliceThe cross-sectional area and slice thickness of layer determine；Control unit, for sending control instruction according to the required current amount of powderTo the powder amount controller of the 3D printing equipment, so that powder amount controller control material cylinder output is worked as with described requiredThe corresponding powder of preceding amount of powder to the 3D printing equipment print area；Print unit, for being printed using the powderThe entity of the current slice layer.
Based on the third aspect, in a kind of possible design, the determination unit is also used to obtain the current slice layerCross-sectional area；And cross-sectional area and predetermined slice thickness according to the current slice layer, it determines described in printingCurrent amount of powder needed for current slice layer.
Based on the third aspect, in a kind of possible design, the determination unit is also used to obtain characterization and described currently cutsMultiple coordinate positions of the profile size of lamella；And multiple coordinate positions of the profile size based on the current slice layer,Determine the cross-sectional area of the current slice layer.
Based on the third aspect, in a kind of possible design, the determination unit is also used to, and obtains the current slice layerCross-sectional area；Obtain the thickness of the current slice layer；And it described cuts according to the thickness of the current slice layer and currentlyThe cross-sectional area of lamella determines current amount of powder needed for printing the current slice layer.
Based on the third aspect, in a kind of possible design, described device further include: storage unit, it is described for obtainingWhole slicing layers of the model of object to be printed；For each slicing layer in whole slicing layers, based on the slicing layerCross-sectional area and slice thickness determine amount of powder needed for printing the slicing layer；By each slicing layer in whole slicing layersIt is stored with the corresponding relationship of amount of powder needed for the printing slicing layer；Corresponding, the determination unit is also used to based on instituteCurrent slice layer is stated, the required current powder corresponding with the current slice layer is found out from the corresponding relationshipAmount.
Based on the third aspect, in a kind of possible design, described device further include: prompt unit, for determining printingThe sum of amount of powder needed for the whole slicing layer is total amount of powder；And prompt is generated based on total amount of powder and is referred toIt enables, to prompt user that the powder of total amount of powder is injected the material cylinder.
Based on the third aspect, in a kind of possible design, described control unit is also used to obtain the transversal of the material cylinderArea；Cross-sectional area based on the material cylinder and current amount of powder needed for printing the current slice layer, determine with it is describedPowder height of the required corresponding powder of current amount of powder in the material cylinder；And it is sent and is controlled according to the powder heightInstruction is to the powder amount controller, so that the powder amount controller control material cylinder output is corresponding with the powder heightPowder to the 3D printing equipment print area, wherein the powder corresponding with powder height is in the material cylinderInterior height is the powder height.
Fourth aspect, the embodiment of the present application provide a kind of amount of powder determining device, and described device includes: acquiring unit, useIn the whole slicing layers for the model for obtaining the object to be printed；First determination unit, for in whole slicing layersEach slicing layer, determine the cross-sectional area of the slicing layer and the thickness of the slicing layer；Second determination unit, for being cut based on thisThe cross-sectional area of lamella and the thickness of the slicing layer, determine amount of powder needed for printing the slicing layer, so that 3D printing equipmentThe entity slice of the slicing layer is printed based on powder corresponding with amount of powder needed for the slicing layer.
5th aspect, the embodiment of the present application provides a kind of electronic equipment, including processor and is connected to the processorMemory, computer program is stored in the memory, when the computer program is executed by the processor, so that instituteIt states electronic equipment and executes method described in first aspect and second aspect.
6th aspect, the embodiment of the present application provide a kind of storage medium, are stored with computer program in the storage medium,When the computer program is run on computers, so that the computer executes side described in first aspect and second aspectMethod.
Other feature and advantage of the application will be illustrated in subsequent specification, also, partly be become from specificationIt is clear that by implementing the embodiment of the present application understanding.The purpose of the application and other advantages can be by written theorysSpecifically noted structure is achieved and obtained in bright book, claims and attached drawing.
Specific embodiment
Below in conjunction with attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application is described.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang YiIt is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.Meanwhile the application'sIn description, term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
Fig. 1 is please referred to, Fig. 1 is a kind of flow chart of 3D printing method provided by the embodiments of the present application, the method includesStep: S100, S200, S300, S400 and S500.
S100: it receives and needs to treat the print command that the model of printing objects is printed for characterizing.
S200: responding the print command, determines the current slice layer for currently needing to print in the model to be printed.
S300: current amount of powder needed for printing the current slice layer is determined, wherein needed for the current slice layerCurrent amount of powder is determined according to the cross-sectional area and slice thickness of the current slice layer.
S400: it is controlled according to the amount of powder that the required current amount of powder sends control instruction to the 3D printing equipmentDevice is beaten so that powder amount controller control material cylinder exports corresponding with required current amount of powder powder to the 3DThe print area of printing apparatus.
S500: the entity of the current slice layer is printed using the powder.
It describes in detail below to the above method.
When needing to the current slice layer of the model to be printed, in order in the way of searching come directRequired current amount of powder corresponding with the current slice layer is found out, to improve printing effect, therefore, as a kind of implementationMode, before S100, the method also includes steps: A1, A2 and A3.
A1: whole slicing layers of the model of the object to be printed are obtained.
As an implementation, A1 is comprising steps of A11 and A12.
A11: the model of the object to be printed is obtained.
Since 3D printing process is to treat each slices of printing objects to be overlapped printing, i.e., cut in the entity printedNew entity slice is printed on the basis of piece, then obtains the entity of integrally formed object, it is therefore, soft using image procossingPart treats printing objects and carries out 3D modeling, obtains the model of the object to be printed.
As an implementation, when there is the model for predefining the object to be printed, institute is directly acquiredState the model of object to be printed.
As an implementation, the mark based on the object to be printed, from the mould of pre-stored object to be printedIn first corresponding relationship of type and mark, the mould of the object to be printed corresponding with the mark of the object to be printed is found outType.
A12: carrying out plane layer slice to the model of the object to be printed, obtains whole slicing layers, wherein describedThe quantity of whole slicing layers is the integer more than or equal to 2.
After the model for getting the object to be printed, with the direction of the central axis with the threedimensional model,Plane layer successively is carried out to the threedimensional model of the object to be printed from top to bottom or from bottom to up using image processing softwareSlice obtains whole slicing layers so that the section of each slicing layer in the whole slicing layer with the central axisVertically；Wherein, the thickness size of each slicing layer according to the actual situation depending on, the thickness of each slicing layer can be identical, can alsoWith difference, determined with specific reference to actual conditions.The quantity of the whole slicing layer can be two, three etc..The whole is cutThe quantity of lamella is depending on the thickness of each slicing layer and the general thickness of the model of the object to be printed.
As an implementation, the section of any one slicing layer in whole slicing layer and the central axis itBetween angle can be acute angle, or obtuse angle.Wherein, the angle between the section of each slicing layer and the axle center can be withIt is identical, it can also be different.
A2: for each slicing layer in whole slicing layers, cross-sectional area and slice thickness based on the slicing layerDetermine amount of powder needed for printing the slicing layer.
As an implementation, the step of determining amount of powder needed for printing the slicing layer includes: A21 and A22.
A21: the cross-sectional area of the slicing layer is obtained.
As an implementation, A21 is comprising steps of A211 and A212.
A211: the multiple coordinate positions for characterizing the profile size of the slicing layer are obtained.
After getting whole slicing layers, by establishing coordinate system, for each slicing layer, so that the slicing layer positionIn in the coordinate system, acquisition characterizes coordinate position of the multiple points of the profile size of the slicing layer in the coordinate system.ItsIn, characterize the quantity of coordinate position of the multiple points of the profile size of the slicing layer in the coordinate system and the shape of slicing layerIt is related.For the slicing layer, the quantity of the coordinate position of acquisition is at least three, because 1 points of coordinate position isIt can determine that a face.When the shape of slicing layer is triangle, the seat for characterizing multiple points of profile size of the slicing layer is obtainedThe quantity of cursor position is at least three, and 1 points of coordinate position includes: the coordinate bit on three vertex on the slicing layerIt sets；When the shape of the slicing layer is quadrangle, the coordinate position for characterizing the multiple points for the profile size for deserving slicing layer is obtainedQuantity be at least four, wherein 1 points of coordinate position includes: the coordinate bit on four vertex on the slicing layerIt sets；When the shape of the slicing layer is round, the number for characterizing the coordinate position of multiple points of profile size of the slicing layer is obtainedAmount is at least three.
A212: multiple coordinate positions of the profile size based on the slicing layer obtain the cross-sectional area of the slicing layer.
Wherein, the quantity of multiple coordinate positions of the slicing layer is more, and the calculating of the cross-sectional area of the slicing layer is more accurate,But computation complexity is relatively also bigger, and for the slicing layer, the required coordinate position in the cross-sectional area for determining the slicing layerQuantity be at least three because three points just can determine that a face.Coordinate position using multiple points on the slicing layer is trueThe shape of the slicing layer is made, the cross section of the slicing layer is then determined using the coordinate position of multiple points on the slicing layerProduct.
For example, the slicing layer be triangle when, and the quantity of multiple coordinate positions of the slicing layer be three when, utilizeThree coordinate positions on the slicing layer determine the triangle for characterizing the slicing layer profile size, then determine triangleThe size θ for the angle that the length a and b on any both sides of shape and any both sides are constituted, then inputs triangle for a, b and θAreal calculation formula S=1/2*a*b*sin (θ), determine the area of the slicing layer.
For example, when the slicing layer is round, using multiple coordinate positions of the slicing layer, determine that one characterizes this and cutsThe circle of lamella profile size, then determines the radius of the slicing layer using multiple coordinate positions of the slicing layer, then willThe radius of the slicing layer inputs circular areal calculation formula, determines the cross-sectional area of the slicing layer.
A22: according to the cross-sectional area and slice thickness, amount of powder needed for printing the slicing layer is determined.
When the slice thickness of the slicing layer is predetermined, the cross-sectional area of the slicing layer and predetermined is determinedThe product of slice thickness is the volume of the slicing layer.
As an implementation, after determining the volume of the slicing layer, based on powder used in the printing slicing layerDensity, the product of the volume and the density that determine the slicing layer be print the slicing layer needed for amount of powder.
As an implementation, it after determining the volume of the slicing layer, determines and prints powder used in the slicing layerDensity, the volume of the slicing layer, and printing after slice entity compactedness product be printing the slicing layer needed for powderEnd amount.
When the thickness of the slicing layer does not predefine, amount of powder needed for printing the slicing layer is determined, comprising steps ofA221, A222 and A223.
A221: the thickness of the slicing layer is obtained.
After getting the slicing layer, the thickness for characterizing the slicing layer that the slicing layer is located in the coordinate system is obtainedThe coordinate position of two points determines that the distance of the coordinate position of described two points is the thickness of the slicing layer.
A222: the cross-sectional area of the slicing layer is obtained.
Wherein, the embodiment of step A222 can be refering to step A212, therefore details are not described herein.
A223: it according to the cross-sectional area of the thickness of the slicing layer and the slicing layer, determines needed for printing the slicing layerAmount of powder.
After determining the thickness of the slicing layer, the product of the cross-sectional area of the slicing layer and the thickness of the slicing layer is determinedFor the volume of the slicing layer.
As an implementation, after determining the volume of the slicing layer, based on powder used in the printing slicing layerDensity, the product of the volume and the density that determine the slicing layer be print the slicing layer needed for amount of powder.
As an implementation, it after determining the volume of the slicing layer, determines and prints powder used in the slicing layerDensity, the volume of the slicing layer, and printing after slice entity compactedness product be printing the slicing layer needed for powderEnd amount.
A3: by each slicing layer in whole slicing layers and the corresponding relationship of amount of powder needed for printing the slicing layer intoRow storage.
The corresponding relationship of amount of powder needed for establishing each slicing layer in whole slicing layers and printing the slicing layer, andBy each slicing layer in whole slicing layers and the corresponding relationship of amount of powder needed for printing the slicing layer is with file or tableThe form of lattice.
As an implementation, it by the number of plies of each slicing layer in whole slicing layers and prints needed for the slicing layerThe corresponding relationship of amount of powder stored.
As an implementation, it by the mark of each slicing layer in whole slicing layers and prints needed for the slicing layerThe corresponding relationship of amount of powder stored.Wherein, the mark can be English character or other are used to distinguish each cutThe character of lamella, such as aa, bb, cc etc..
S100: it receives and needs to treat the print command that the model of printing objects is printed for characterizing.
After obtaining whole slicing layers of model of the object to be printed, the model to the object to be printed is being neededWhen being printed, by choosing the model of the object to be printed, sends to 3D printing equipment and need for characterizing to be printedThe print command that the model of object is printed, 3D printing equipment are received for characterizing working as the model for needing to treat printing objectsThe print command that preceding slicing layer is printed.
As an implementation, the print command include: currently need to print in the model to be printed it is currentThe number of plies of slicing layer.
As an implementation, the print command includes: the cross-sectional area of the current slice layer.
As an implementation, the print command include: characterize the current slice layer profile size it is multipleCoordinate position.
S200: responding the print command, determines the current slice layer for currently needing to print in the model to be printed.
In the print command include the model to be printed in currently need to print current slice layer the number of plies when,The print command is responded, from the current slice for determining currently to need to print in the model to be printed in the print commandThe number of plies of layer.
As an implementation, from each slicing layer of whole slicing layers in the model to be printed of pre-selection storageThe number of plies and slicing layer model corresponding relationship in, search corresponding with the number of plies of the current slice layer current slice layerModel.
As an implementation, when the print command includes: the cross-sectional area of the current slice layer, institute is respondedPrint command is stated, the cross-sectional area of the current slice layer is determined from the print command.
As an implementation, the print command include: characterize the current slice layer profile size it is moreA coordinate position responds the print command, determines that the profile for characterizing the current slice layer is big from the print commandSmall multiple coordinate positions.
S300: current amount of powder needed for printing the current slice layer is determined, wherein needed for the current slice layerCurrent amount of powder is determined according to the cross-sectional area and slice thickness of the current slice layer.
As an implementation, after the number of plies for determining the current slice layer, S300 includes: based on described currentThe number of plies of slicing layer the number of plies of each slicing layer and prints needed for the slicing layer from pre-stored whole slicing layersIn the corresponding relationship of amount of powder, the required current amount of powder corresponding with the number of plies of the current slice layer is found out.
As an implementation, after the model for determining the current slice layer, S300 includes: based on described currentSlicing layer, the correspondence of each slicing layer and amount of powder needed for the printing slicing layer from pre-stored whole slicing layersIn relationship, the required current amount of powder corresponding with the current slice layer is found out.
When not finding out the required current amount of powder corresponding with the current slice layer, as a kind of embodiment partyThe step of formula, current amount of powder needed for determining the printing current slice layer includes: B1 and B2.
B1: the cross-sectional area of the slicing layer is obtained.
As an implementation, when the print command includes the cross-sectional area of the current slice layer, from describedThe cross-sectional area of the current slice layer is obtained in print command.
As an implementation, include in the print command current slice layer the number of plies when, based on describedThe number of plies of current slice layer, from the number of plies of each slicing layers of whole slicing layers in the pre-stored model to be printed andIn the corresponding relationship of the cross-sectional area of slicing layer, the current slice layer corresponding with the number of plies of the current slice layer is found outCross-sectional area.
As an implementation, B1 includes: B11 and B12.
B11: the multiple coordinate positions for characterizing the profile size of the current slice layer are obtained.
After obtaining the current slice layer, by establishing coordinate system, so that the current slice layer is located at the coordinateIn system, coordinate position of the multiple points for the profile size for characterizing the current slice layer in the coordinate system is obtained.Wherein, tableLevy the quantity of coordinate position of the multiple points of the profile size of the current slice layer in the coordinate system and the shape of slicing layerShape is related.
B12: multiple coordinate positions of the profile size based on the current slice layer determine the cross of the current slice layerSectional area.
Wherein, the quantity of multiple coordinate positions of the current slice layer is more, the cross-sectional area of the current slice layerCalculating it is more accurate, but computation complexity is relatively also bigger, for the current slice layer, is determining the current slice layerCross-sectional area when required coordinate position quantity be at least three because three points just can determine that a face.Worked as using describedThe coordinate position of multiple points on preceding slicing layer determines the shape of the current slice layer, then utilizes the current slice layerOn the coordinate positions of multiple points determine the cross-sectional area of the current slice layer.Wherein it is determined that the current slice layerThe mode of cross-sectional area is see step A212.Therefore, details are not described herein.
B2: according to the cross-sectional area and predetermined slice thickness of the current slice layer, determine that printing is described currentCurrent amount of powder needed for slicing layer.
After the cross-sectional area for determining the current slice layer, cross-sectional area and the institute of the current slice layer are determinedThe product for stating predetermined slice thickness is the volume of the current slice layer.
Wherein, the predetermined slice thickness can be implemented in the following way, get the current sliceAfter the number of plies of layer, from the corresponding relationship of the thickness of the number of plies and slicing layer of pre-stored slicing layer, finds out and work as with describedThe corresponding slice thickness of the number of plies of preceding slicing layer.
As an implementation, the predetermined slice thickness can be implemented in the following way, getAfter the current slice layer, from the corresponding relationship of the thickness of pre-stored slicing layer and slicing layer, finds out and work as with describedThe corresponding slice thickness of preceding slicing layer.
As an implementation, after the volume for determining the current slice layer, based on the printing current sliceThe density of powder used in layer, the product of the volume and the density that determine the current slice layer are the printing current slice layerRequired amount of powder.
As an implementation, it after the volume for determining the current slice layer, determines and prints the current sliceThe product of the compactedness of slice entity after density, the volume of the current slice layer of powder used in layer, and printing is to beatAmount of powder needed for printing the current slice layer.
As an implementation, it when the slice thickness for currently cutting layer does not predefine, determines described in printingThe step of current amount of powder needed for current slice layer: B21, B22 and B23.
B21: the thickness of the current slice layer is obtained.
After getting the current slice layer, obtain described in the characterization that the current slice layer is located in the coordinate systemFirst coordinate position of two points of the thickness of current slice layer determines the distance of the first coordinate position of described two points for instituteState the thickness of current slice layer.
B22: the cross-sectional area of the current slice layer is obtained.
Wherein, the embodiment of step B22 can be refering to step B11 and step B12, and therefore, details are not described herein.
B23: it according to the cross-sectional area of the thickness of the current slice layer and the current slice layer, determines described in printingCurrent amount of powder needed for current slice layer.
Wherein, the detailed implementation process of B23 please refers to step B2, and therefore, details are not described herein.
S400: it is controlled according to the amount of powder that the required current amount of powder sends control instruction to the 3D printing equipmentDevice is beaten so that powder amount controller control material cylinder exports corresponding with required current amount of powder powder to the 3DThe print area of printing apparatus.
As an implementation, S400 is comprising steps of C1, C2 and C3.
C1: the cross-sectional area of the material cylinder is obtained.
Wherein, the area of the material cylinder is pre-set, includes: the cross-sectional area of institute's material cylinder in the print commandWhen, the cross-sectional area of the material cylinder is obtained from described instruction.
C2: current amount of powder needed for cross-sectional area and the printing current slice layer based on the material cylinder is determinedPowder height of the powder corresponding with the required current amount of powder in the material cylinder.
As an implementation, it when the required current amount of powder is the volume of the current slice layer, determinesThe quotient of the cross-sectional area of the volume and material cylinder of the current slice layer is the required corresponding powder of current amount of powderPowder height in the material cylinder.
It as an implementation, is the volume of the current slice layer and described close in the required current amount of powderWhen the product of degree, determine that the quotient of the cross-sectional area of the current amount of powder and the material cylinder is that the required current amount of powder is correspondingPowder height of the powder in the material cylinder.
As an implementation, the amount of powder needed for the current slice layer is powder used in the current slice layerDensity, the volume of the current slice layer at end, and the slice entity after printing compactedness product when, determine described currentThe corresponding powder of current amount of powder needed for described in the Shang Weiyu of the cross-sectional area of amount of powder and the material cylinder is in the material cylinderPowder height.
C3: control instruction is sent to the powder amount controller, so that the amount of powder is controlled according to the powder heightDevice controls the print area of material cylinder output powder corresponding with the powder height to the 3D printing equipment.
Control instruction is sent to the powder amount controller according to the powder height, wherein is provided in the material cylinderDisplacement sensor and material cylinder hoistable platform, the material cylinder hoistable platform are parallel with the bottom of the material cylinder, wherein the material cylinderPowder is placed in the space that shape can collectively form for rectangle, square etc., the material cylinder hoistable platform and the material cylinderEnd, wherein the position sensor can be grating sensor, the grating displacement sensor respectively with material cylinder hoistable platform,The bottom of the material cylinder and powder amount controller connection, when needing to print current slice layer, the amount of powder controlMaterial cylinder hoistable platform described in device move up so that the material cylinder export powder to the 3D printing equipment print area, it is describedOne end of grating displacement sensor also can do together ascending motion with the feed lift cylinders, and the powder amount controller passes throughGrating displacement sensor obtains first height of the material cylinder hoistable platform described in current time in the material cylinder, in amount of powderDuring controller controls the material cylinder output powder, the powder amount controller acquires the material cylinder hoistable platform in real time and existsThe second height in the material cylinder, it is described when the difference of second height and first height is equal to the powder heightPowder amount controller controls the material cylinder hoistable platform and stops movement, then controls the material cylinder and stops output powder.
As an implementation, S400 can be implemented as follows, be institute in the required current amount of powderWhen stating the volume of current slice layer and printing the product of density of the powder, alternatively, the powder needed for the current slice layerAmount is the slice entity after density, the volume of the current slice layer of powder used in the current slice layer, and printingCompactedness product when, control instruction is sent to the powder amount controller according to the required current amount of powder, wherein instituteIt states and mass sensor is installed on material cylinder hoistable platform, far from close to institute on the mass sensor and the material cylinder hoistable platformThe face connection of bottom of the cylinder is stated, the mass sensor is connect with the powder amount controller, and the powder amount controller passes throughFirst mass of the powder stored in material cylinder described in the mass sensor acquisition current time, and it is flat to control the material cylinder liftingPlatform moves up so that the material cylinder exports the print area of powder to the 3D printing equipment, in the control material cylinder output powderIn the process at end, the powder amount controller acquires the of remaining powder in the material cylinder by the mass sensor in real timeTwo mass, when the difference of second mass and first mass is equal to the required current amount of powder, the amount of powderController controls the material cylinder hoistable platform stop motion, then controls the material cylinder and stops output powder.
S500: the entity of the current slice layer is printed using the powder.
3D printing equipment emits laser by laser to melt the powder being located on the print area, has beaten existingWhen the slice entity of print, it is described printed slice entity on the basis of scanning and printing go out the entity of the current slice layer.
After each slicing layer for determining to print the model to be printed respectively required amount of powder, as a kind of realityMode is applied, after A2, the method also includes: the sum of amount of powder needed for determining printing whole slicing layers is total powderEnd amount；Hint instructions are generated based on total amount of powder, to prompt described in powder injection of the user by total amount of powderMaterial cylinder.
Before printing the model to be printed, in the respective institute of each slicing layer for determining to print the model to be printedAfter the amount of powder needed, the sum of amount of powder needed for determining printing whole slicing layers is total amount of powder, and based on describedTotal amount of powder generates hint instructions, prompt information is generated in the 3D printing equipment, or the prompt information is sentTo the user terminal connecting with the 3D printing equipment, the prompt information is for prompting user by the powder of total amount of powderThe material cylinder is injected at end, is guaranteed that the amount of powder injected inside material cylinder can just be used to print and is completed the model to be printed, afterAnd guarantee be not in print procedure scarce powder or powder it is excessive and the problem of waste.
As an implementation, after S300, the method also includes: G and H.
G: by the first corresponding relationship of current amount of powder needed for the current slice layer and the printing current slice layerIt is stored.
After getting the required current amount of powder, by the current slice layer and the required current powderFirst corresponding relationship of amount is stored in the form of table or file.
As an implementation, the second correspondence of the number of plies of the current slice layer and the required current amount of powderRelationship is stored in the form of table or file.
H: when getting the current slice layer again, it is based on the current slice layer, from first corresponding relationshipIn determine current amount of powder needed for printing the current slice layer.
When getting the current slice layer again, it is based on the current slice layer, from first corresponding relationshipFind out the required current amount of powder corresponding with the current slice layer.
It is corresponding from described second based on the number of plies of the current slice layer when getting the current slice layer againIt is found out in relationship and counts the corresponding required current amount of powder layer by layer with the current slice.
By the above-mentioned means, when getting the current slice layer again, by searching for mode directly acquire it is describedRequired amount of powder improves amount of powder and determines efficiency, then mention without amount of powder needed for redefining the current slice layerHigh printing effect.
Referring to figure 2., Fig. 2 is the flow chart that a kind of amount of powder provided by the embodiments of the present application determines method, the methodIt include: S600, S700 and S800.
S600: whole slicing layers of the model of the object to be printed are obtained.
S700: for each slicing layer in whole slicing layers, the cross-sectional area and the slice of the slicing layer are determinedThe thickness of layer.
S800: the thickness of cross-sectional area and the slicing layer based on the slicing layer is determined needed for printing the slicing layerAmount of powder, so that 3D printing equipment prints the entity of the slicing layer based on powder corresponding with amount of powder needed for the slicing layerSlice.
Wherein, the implementation process of the present embodiment content described in the embodiment described referring to Figure 1, therefore, herein notIt repeats again.
Referring to figure 3., Fig. 3 is a kind of structural block diagram of 3D printing device 400 provided by the embodiments of the present application.It below will be rightStructural block diagram shown in Fig. 3 is illustrated, and shown device includes:
Receiving unit 410 is used to characterize the print command for needing to treat the model of printing objects and being printed for receiving；Response unit 420 determines the current slice for currently needing to print in the model to be printed for responding the print commandLayer；Determination unit 430, for current amount of powder needed for determining the printing current slice layer, wherein the current slice layerRequired current amount of powder is determined according to the cross-sectional area and slice thickness of the current slice layer；Control unit 440 is used for rootThe powder amount controller that control instruction to the 3D printing equipment is sent according to the required current amount of powder, so that the powderAmount controller controls material cylinder and exports powder corresponding with the required current amount of powder to the print zone of the 3D printing equipmentDomain；Print unit 450, for printing the entity of the current slice layer using the powder.
As an implementation, determination unit 430 are also used to obtain the cross-sectional area of the current slice layer；AndAccording to the cross-sectional area of the current slice layer and the predetermined slice thickness, determines and print the current slice layer instituteThe current amount of powder needed.
As an implementation, determination unit 430 are also used to obtain the profile size for characterizing the current slice layerMultiple coordinate positions；And multiple coordinate positions of the profile size based on the current slice layer, determine the current sliceThe cross-sectional area of layer.
As an implementation, determination unit 430 are also used to have at least two in the model of the object to be printedWhen the thickness difference of a slicing layer, the thickness of the current slice layer is obtained；And according to the thickness of the current slice layer andThe cross-sectional area of the current slice layer determines current amount of powder needed for printing the current slice layer.
As an implementation, described device further include: storage unit, for obtaining the whole of the model to be printedSlicing layer；For each slicing layer in whole slicing layers, amount of powder needed for printing the slicing layer is determined；It will be describedEach slicing layer and the corresponding relationship of amount of powder needed for the printing slicing layer are stored in whole slicing layers；It is corresponding, reallyOrder member 430 is also used to find out from the corresponding relationship corresponding with the current slice layer based on the current slice layerThe required current amount of powder.
As an implementation, described device further include: prompt unit, for determining printing whole slicing layers instituteThe sum of the amount of powder needed is total amount of powder；And hint instructions are generated based on total amount of powder, to prompt user by instituteThe powder for stating total amount of powder injects the material cylinder.
As an implementation, described control unit is also used to obtain the cross-sectional area of the material cylinder；Based on the materialCurrent amount of powder needed for the cross-sectional area and the printing current slice layer of cylinder, is determined and the required current amount of powderPowder height of the corresponding powder in the material cylinder；And control instruction is sent to the amount of powder according to the powder heightController is beaten so that the powder amount controller controls material cylinder output powder highly corresponding with the powder to the 3DThe print area of printing apparatus, wherein height of the powder corresponding with the powder height in the material cylinder is the powderLast height.
Each functional unit of the present embodiment pair realizes the process of respective function, refers to and retouches in above-mentioned embodiment illustrated in fig. 1The content stated, details are not described herein again.
Referring to figure 4., Fig. 4 is a kind of structural block diagram of amount of powder determining device 500 provided by the embodiments of the present application.BelowStructural block diagram shown in Fig. 4 will be illustrated, shown device includes:
Acquiring unit 510, whole slicing layers of the model for obtaining the object to be printed.
First determination unit 520, for determining the cross of the slicing layer for each slicing layer in whole slicing layersThe thickness of sectional area and the slicing layer.
Second determination unit 530 is determined to print for the thickness of cross-sectional area and the slicing layer based on the slicing layerAmount of powder needed for the slicing layer, so that 3D printing equipment is printed based on powder corresponding with amount of powder needed for the slicing layerThe entity of the slicing layer is sliced.
Each functional unit of the present embodiment pair realizes the process of respective function, refers to and retouches in above-mentioned embodiment illustrated in fig. 2The content stated, details are not described herein again.
Referring to figure 5., the embodiment of the present application provides the structural schematic diagram of a kind of electronic equipment 100, and electronic equipment 100 can be withFor 3D printing equipment, electronic equipment 100 or be PC (personal computer, PC), tablet computer, intelligenceEnergy mobile phone, personal digital assistant (personal digital assistant, PDA) etc..
Electronic equipment 100 may include: memory 102, processing 101, communication interface 103 and communication bus, communication busFor realizing the connection communication of these components.
Memory 102 is used to store the model of object to be printed, 3D printing method and apparatus provided by the embodiments of the present applicationThe various data such as corresponding calculation procedure instruction, wherein memory 102 may be, but not limited to, random access memory(Random Access Memory, RAM), read-only memory (Read Only Memory, ROM), programmable read only memory(Programmable Read-Only Memory, PROM), erasable read-only memory (Erasable ProgrammableRead-Only Memory, EPROM), electricallyerasable ROM (EEROM) (Electric Erasable ProgrammableRead-Only Memory, EEPROM) etc..
Processor 101 is for it is real to execute the application when reading and running the computer program instructions being stored in memoryThe step of 3D printing method of example offer is provided.
Wherein, processor 101 may be a kind of IC chip, the processing capacity with signal.Above-mentioned processor101 can be general processor, including central processing unit (Central Processing Unit, CPU), network processing unit(Network Processor, NP) etc.；It can also be digital signal processor (DSP), specific integrated circuit (ASIC), sceneProgrammable gate array (FPGA) either other programmable logic device, discrete gate or transistor logic, discrete hardware groupPart.It may be implemented or execute disclosed each method, step and the logic diagram in the embodiment of the present application.General processor can be withIt is that microprocessor or the processor are also possible to any conventional processor etc..
Communication interface 103, can be used the device of any transceiver one kind, send hint instructions to the electronic equipmentThe user terminal of 100 connections.
In addition, it is stored with computer program in the storage medium the embodiment of the present application also provides a kind of storage medium,When the computer program is run on computers, so that the computer executes any one of the application embodiment and is providedMethod.
In conclusion the amount of powder that proposes of each embodiment of the application is determining and 3D printing method, apparatus, electronic equipment and depositsStorage media, need to treat printer model printed when, respond the print command, determine in the model to be printed currentCurrent amount of powder required for the current slice layer for needing to print then sends control according to the required current amount of powder and refers toEnable to the 3D printing equipment powder amount controller so that the powder amount controller control material cylinder output with it is described requiredThe current corresponding powder of amount of powder prints the entity of current slice layer to the print area of the 3D printing equipment, so that 3DPrinting device can based on each slicing layer of printing objects respectively the corresponding powder of required actual powder amount realize it is automaticChange printing, manual intervention is not necessarily in print procedure, saves human resources, wherein current powder needed for the current slice layerEnd amount is determined according to the cross-sectional area of the current slice layer and predetermined slice thickness, guarantees the current amount of powderIt determines precision, then avoids scarce powder or the excessive drawback of powder.
In embodiment provided herein, it should be understood that disclosed device and method, it can also be by otherMode realize.The apparatus embodiments described above are merely exemplary, for example, the flow chart and block diagram in attached drawing are shownAccording to device, the architectural framework in the cards of method and computer program product, function of multiple embodiments of the applicationAnd operation.In this regard, each box in flowchart or block diagram can represent one of a module, section or codePoint, a part of the module, section or code includes one or more for implementing the specified logical function executableInstruction.It should also be noted that function marked in the box can also be attached to be different from some implementations as replacementThe sequence marked in figure occurs.For example, two continuous boxes can actually be basically executed in parallel, they sometimes may be usedTo execute in the opposite order, this depends on the function involved.It is also noted that each of block diagram and or flow chartThe combination of box in box and block diagram and or flow chart can be based on the defined function of execution or the dedicated of movementThe device of hardware is realized, or can be realized using a combination of dedicated hardware and computer instructions.
In addition, each functional module in each embodiment of the application can integrate one independent portion of formation togetherPoint, it is also possible to modules individualism, an independent part can also be integrated to form with two or more modules.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this fieldFor art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repairChange, equivalent replacement, improvement etc., should be included within the scope of protection of this application.