CN104191623A

CN104191623A - 3D printing assistance method and 3D printing assistance device as well as 3D printer

Info

Publication number: CN104191623A
Application number: CN201410433032.0A
Authority: CN
Inventors: 周涵宁
Original assignee: Beijing Zhigu Tech Co Ltd
Current assignee: Beijing Zhigu Tech Co Ltd
Priority date: 2014-08-28
Filing date: 2014-08-28
Publication date: 2014-12-10
Anticipated expiration: 2034-08-28
Also published as: CN104191623B

Abstract

The embodiment of the invention discloses a 3D printing assistance method and a 3D printing assistance device as well as a 3D printer. The method comprises the following steps: determining the application position, the size and the direction of a supporting force needed by at least one part of an object in an object printing process according to a printing model file of the object; and controlling a non-contact type supporting device to provide an acting force satisfying the needed supporting force to at least one part in the printing process according to the application position, the size and the direction of the needed supporting force. The embodiment of the invention provides a scheme for assisting 3D printing.

Description

3D prints householder method, device and 3D printer

Technical field

The embodiment of the present application relates to printing technique field, relates in particular to a kind of 3D and prints householder method, device and 3D printer.

Background technology

Existing consumer level three-dimensional (3 Dimension are called for short 3D) printer, adopts fusion sediment moulding (Fused Deposition Modeling is called for short FDM) technology mostly.FDM technology depends on gravity molten state material is fixed on to precalculated position, in the process of printing, if the angle of inclination of the moulding section of model is larger, and outstanding nose shape in eaves shape or head portrait for example, this moulding section easily subsides.

Common solution is to print extra supporting construction in the position of these moulding sections, but print supporting construction itself and can take the time-write interval, consume printed material, even and after printing completes, excise supporting construction, or can leave some joint seam traces, affect the outward appearance of final molding.

Summary of the invention

In view of this, the scheme that provides a kind of auxiliary 3D to print is provided the embodiment of the present application object.

For achieving the above object, according to the embodiment of the present application aspect, provide a kind of 3D to print householder method, comprising:

According to the printer model file of an object, determine at least one parts in described object in the print procedure of described object required support force apply position, size and Orientation;

At least according to described required support force apply position, size and Orientation, control a contactless bracing or strutting arrangement and to described at least one parts, provide the active force that meets described required support force in described print procedure.

For achieving the above object, according to another aspect of the embodiment of the present application, provide a kind of 3D to print householder method, comprising:

According to shape, the material of printed one at least part of object, that determines support force that at least one parts in described at least part of object are required applies position, size and Orientation;

At least according to described required support force apply position, size and Orientation, control a contactless bracing or strutting arrangement and provide to described at least one parts the active force that meets described required support force.

For achieving the above object, according to another aspect of the embodiment of the present application, provide a kind of 3D to print servicing unit, comprising:

The first determination module, for according to the printer model file of an object, determine at least one parts in described object in the print procedure of described object required support force apply position, size and Orientation;

Control module, at least according to described required support force apply position, size and Orientation, control a contactless bracing or strutting arrangement and to described at least one parts, provide the active force that meets described required support force in described print procedure.

The first determination module, for according to shape, the material of at least part of object that printed, that determines support force that at least one parts in described at least part of object are required applies position, size and Orientation;

Control module, at least according to described required support force apply position, size and Orientation, control a contactless bracing or strutting arrangement and provide to described at least one parts the active force that meets described required support force.

For achieving the above object, according to another aspect of the embodiment of the present application, provide a kind of 3D printer, comprising: a 3D as above prints servicing unit and described contactless bracing or strutting arrangement.

At least one technical scheme in a plurality of technical schemes has following beneficial effect above:

The embodiment of the present application is passed through according to the printer model file of an object, determine at least one parts in described object in the print procedure of described object required support force apply position, size and Orientation, and control a contactless bracing or strutting arrangement to described at least one parts, provide the active force that meets described required support force in described print procedure, the scheme that provides a kind of auxiliary 3D to print, particularly, utilize contactless support force to replace at least in part the supporting construction of printing to support parts, time-write interval and printed material have been saved, and avoided the impact of excision supporting construction on object outward appearance.

Accompanying drawing explanation

A kind of 3D that Fig. 1 provides for the application prints the schematic flow sheet of householder method embodiment mono-;

Fig. 2 A, 2B are respectively in the application in print procedure not a kind of schematic diagram of the required support force of parts in the same time;

Fig. 3 A is a kind of schematic diagram of parts suffered magnetic field force in a magnetic field in the application;

Fig. 3 B is the generation schematic diagram in a kind of magnetic field in the application;

A kind of 3D that Fig. 4 provides for the application prints the schematic flow sheet of householder method embodiment bis-;

A kind of 3D that Fig. 5 A provides for the application prints the structural representation of servicing unit embodiment mono-;

Fig. 5 B is the structural representation of a kind of optional implementation of Fig. 5 A illustrated embodiment;

A kind of 3D that Fig. 6 A provides for the application prints the structural representation of servicing unit embodiment bis-;

Fig. 6 B is the structural representation of a kind of optional implementation of Fig. 6 A illustrated embodiment;

The structural representation of a kind of 3D printer embodiment that Fig. 7 A provides for the application;

Fig. 7 B is the structural representation of a kind of optional implementation of Fig. 7 A illustrated embodiment.

The specific embodiment

Below in conjunction with drawings and Examples, the application's the specific embodiment is described in further detail.Following examples are used for illustrating the present invention, but are not used for limiting the scope of the invention.

A kind of 3D that Fig. 1 provides for the application prints the schematic flow sheet of householder method embodiment mono-.As shown in Figure 1, the present embodiment comprises:

110, according to the printer model file of an object, determine at least one parts in described object in the print procedure of described object required support force apply position, size and Orientation.

For instance, the 3D that a kind of 3D that the application provides prints described in servicing unit embodiment mono-prints servicing unit as the executive agent of the present embodiment, carries out 110～120.Wherein, described 3D printing servicing unit can be arranged on the form of hardware and/or software in a 3D printer.

120, at least according to described required support force apply position, size and Orientation, control a contactless bracing or strutting arrangement and to described at least one parts, provide the active force that meets described required support force in described print procedure.

In the present embodiment, in 110, determine at least one parts in described object the applying position, direction and size and can be of required support force in the print procedure of described object, determine the occurrence that applies position, direction and size of described required support force, or that determines described required support force applies position, direction and the required satisfied condition of size.Correspondingly, in 120, can be, at least according to the occurrence that applies position, direction and size of described required support force, control a contactless bracing or strutting arrangement and to described at least one parts, provide the active force that applies equally position, size and Orientation in described print procedure, or, at least according to described required support force apply position, direction and the required satisfied condition of size, control a contactless bracing or strutting arrangement provides and applies the active force that position, size and Orientation meet described condition described at least one parts in described print procedure.

Alternatively, control described contactless bracing or strutting arrangement and towards described direction, described at least one parts are applied the active force of described size in the described position that applies.

In the present embodiment, the described active force that described contactless bracing or strutting arrangement provides described at least one parts does not produce with contacting of described at least one parts based on described contactless bracing or strutting arrangement.Alternatively, described contactless bracing or strutting arrangement does not contact with described at least one parts, and further alternatively, described contactless bracing or strutting arrangement does not contact with other parts of described object.For instance, the described active force that described contactless bracing or strutting arrangement provides can be, the impulse force of gas or suction, the electric field force of electric field to electrical body, the active force of ultrasonic wave or light wave etc.

The present embodiment passes through according to the printer model file of an object, determine at least one parts in described object in the print procedure of described object required support force apply position, size and Orientation, and control a contactless bracing or strutting arrangement to described at least one parts, provide the active force that meets described required support force in described print procedure, the scheme that provides a kind of auxiliary 3D to print, particularly, utilize contactless support force to replace at least in part the supporting construction of printing to support parts, time-write interval and printed material have been saved, and avoided the impact of excision supporting construction on object outward appearance.

The method of the present embodiment is described further below by some optional implementations.

In the present embodiment, alternatively, described printer model file includes but not limited to: the shape of described object, material, page order.That is to say, in the printer model file of an object, at least described shape, material and the page order of described object.Particularly, the shape of described object comprises: form the shape of various piece of described object and the structural relation between various piece; The material of described object comprises: the material that forms the various piece of described object; The page order of described object comprises: form the page order of the various piece of described object, first print rear which part of which part.

In the present embodiment, between the each several part due to adjacency in an object, there is stress, correspondingly, can described object be divided into a plurality of parts (Parts) according to mutual stress.Because the stress between the each several part of adjacency in an object may change along with print procedure, alternatively, the division of described middle parts of objects part also may be along with print procedure changes.

Wherein, some parts may need to support in print procedure, and some parts may not need to support in print procedure.Alternatively, the present embodiment described according to the printer model file of an object, determine parts in described object in the print procedure of described object required support force apply position, size and Orientation before, also comprise:

According to described printer model file, determine described at least one parts that need support in described object in described print procedure.

For instance, for each parts, all can determine according to the shape of these parts, material the center of gravity of these parts, further, at least according to the center of gravity of these parts, with each parts of this members abut and the structural relation of these parts, and these parts and with the page order of each parts of this members abut, can determine whether these parts need to support.

In the present embodiment, between each parts due to adjacency in an object, have stress, and the page order of each parts has successively, therefore, in the print procedure of described object, whether each parts need support force and required support force all can change.Alternatively, need at least one parts of support to change with described print procedure.Correspondingly, if described at least one parts change with described print procedure, and the required support force of described at least one parts of determining in 110 changes with described print procedure, control described contactless bracing or strutting arrangement in 120 and provide the satisfied active force that changes required support force with described print procedure to described at least one parts that change with described print procedure.

Alternatively, apply position, direction and/or the size of described at least one parts required support force in described print procedure change with described print procedure.For instance, the position that applies of described required support force changes with described print procedure, or, the direction of described required support force changes with described print procedure, or, the size of described required support force changes with described print procedure, or, apply position and the direction of described required support force all change with described print procedure, or, apply position and the size of described required support force all change with described print procedure, or, described required support force apply position, direction and size all change with described print procedure, or, the direction of described required support force and size all change with described print procedure.

Fig. 2 A, 2B are respectively in the application in print procedure not a kind of schematic diagram of the required support force of parts in the same time.It should be noted that, in Fig. 2 A, 2B, only with vertical two dimensional surface, illustrate, and do not mean that the restriction to the application.The part object that in the print procedure of described object a moment (with t1 represent) print of Fig. 2 A for determining according to the printer model file of an object, the part object that in described print procedure another moment (with t2 represent) print of Fig. 2 B for determining according to described printer model file, t2>t1, the part object constantly having printed at t1, t2 includes parts 1 and parts 2.

As shown in Figure 2 A, at t1 constantly, 2 pairs of parts 1 of parts produce stress N1 at adjoiner, N1 is no more than the maximum stress of the 2 pairs of parts 1 of parts that determined by structure, material etc., and the gravity of parts 1 is G1, and the distance of the adjoiner of the center of parts 1 and parts 1 and parts 2 is L1, the moment that is the gravity of parts 1 is G1*L1, therefore,, in order to guarantee equalising torque, the t1 constantly moment of the required support force T1 of parts 1 should equate with the moment G1*L1 of the gravity G1 of parts 1; In addition, take vertical two dimensional surface as example, suppose that the component of stress N1 on x axle is component on y axle is the t1 constantly component of the required support force of parts 1 on x axle is component on y axle is further contemplate the t1 pressure P 1 of printing head to the parts 1 of printing constantly, suppose P1 vertically downward,, in order to guarantee the stress balance of parts 1, N1, G1, T1, P1 need meet: constraints based on above-mentioned equalising torque and stress balance, can determining means 1 applies position, direction and size at the constantly required support force T1 of t1; Further, constraints based on above-mentioned equalising torque and stress balance, a plurality of support force T1 may can be determined, a plurality of support force T1 that apply position, direction and/or vary in size, correspondingly, can therefrom select a support force T1, alternatively, select a support force T1 who makes stress N1 minimum.Need to illustrate, in some possible scenes, P1 is 0, such as after parts 1 have been printed; And/or N1 is 0, such as parts 1 without other parts of adjacency, other parts of parts 1 adjacency while all also not starting to print; And/or parts 1 directly contact with print platform, except above-mentioned various power, parts 1 may also be subject to the support force of print platform.

As shown in Figure 2 B, at t2 constantly, 2 pairs of parts 1 of parts produce stress N2 at adjoiner, N2 is no more than the maximum stress of the 2 pairs of parts 1 of parts that determined by structure, material etc., and the gravity of parts 1 is G2, and the distance of the adjoiner of the center of parts 1 and parts 1 and parts 2 is L2, the moment that is the gravity of parts 1 is G2*L2, therefore,, in order to guarantee equalising torque, the t2 constantly moment of the required support force T2 of parts 1 should equate with the moment G2*L2 of the gravity G2 of parts 1; In addition, take vertical two dimensional surface as example, suppose that the component of stress N2 on x axle is component on y axle is the t2 constantly component of the required support force of parts 1 on x axle is component on y axle is further contemplate the t2 pressure P 2 of printing head to the parts 1 of printing constantly, suppose P2 vertically downward,, in order to guarantee the stress balance of parts 1, N2, G2, T2, P2 need meet: constraints based on above-mentioned equalising torque and stress balance, can determining means 1 applies position, direction and size at the constantly required support force T2 of t2; Further, constraints based on above-mentioned equalising torque and stress balance, a plurality of support force T2 may can be determined, a plurality of support force T2 that apply position, direction and/or vary in size, correspondingly, can therefrom select a support force T2, alternatively, select a support force T2 who makes stress N2 minimum.Need to illustrate, in some possible scenes, P2 is 0, such as after parts 1 have been printed; And/or N2 is 0, such as parts 1 without other parts of adjacency, other parts of parts 1 adjacency while all also not starting to print; And/or parts 1 directly contact with print platform, except above-mentioned various power, parts 1 may also be subject to the support force of print platform.

Comparison diagram 2A, 2B can find out, due to t2 parts 1 constantly than t1 parts more than 1 constantly the first half, in the gravity increase of parts 1 and center of gravity, move, be G2>G1 and L2>L1, therefore, parts 1 are greater than parts 1 in the moment of the constantly required support force T1 of t1 in the moment of the constantly required support force T2 of t2, correspondingly, than parts 1 t1 constantly required support force T1 apply position, direction and size, parts 1 apply position, direction and/or size and can change the constantly required support force T2's of t2.

In the present embodiment, described contactless bracing or strutting arrangement has multiple implementation.

In a kind of optional implementation of contactless bracing or strutting arrangement, described contactless bracing or strutting arrangement comprises: for exporting at least one printing head of ferrimagnet, and for produce a magnetic field generation device at least one magnetic field in print area.

Wherein, described print area refers to the region that at least one printing head in 3D printer can move at print procedure.

In the optional implementation of this contactless bracing or strutting arrangement, correspondingly, control described contactless bracing or strutting arrangement and in described print procedure, described at least one parts are applied to described support force and also have multiple implementation.

In a kind of optional implementation of control, describedly at least according to described support force, apply position, size and Orientation, control a contactless bracing or strutting arrangement and to described at least one parts, provide the active force that meets described required support force in described print procedure, comprising:

At least according to described required support force, apply position, size and Orientation, control ferrimagnet that described at least one printing head exports in the described print procedure position in described at least one parts, and control at least one magnetic field that described magnetic field generation device produces in described print procedure described at least one parts that comprise described ferrimagnet are produced to the magnetic field force that meets described required support force.

It should be noted that, if described at least one parts are arranged in a plurality of magnetic field, described at least one parts that comprise ferrimagnet are subject to the magnetic field force in the plurality of magnetic field after by the plurality of magnetic field magnetisation simultaneously, now, and the described required support force of making a concerted effort to meet of the magnetic field force in the plurality of magnetic field.

Fig. 3 A is a kind of schematic diagram of parts suffered magnetic field force in a magnetic field in the application.As shown in Figure 3A, the magnetic direction in this magnetic field as shown by arrows in FIG., the magnetic field intensity in this magnetic field is H, in these parts, shadow region is ferrimagnet, and the projected area of this shadow region in the plane vertical with magnetic direction is S, and the magnetic induction intensity of this shadow region is B, correspondingly, the magnetic field force F=B*H*S/2 that these parts are suffered, the direction of magnetic field force F is consistent with magnetic direction, and the active position of magnetic field force F on these parts can be thought the center of this shadow region; Further, the susceptibility of ferrimagnet is Br, if do not consider the leakage field phenomenon after ferrimagnet is magnetized, can think B=Br.

Alternatively, describedly at least according to described required support force, apply position, size and Orientation, control the distribution in described at least one parts of ferrimagnet that described at least one printing head exports in described print procedure, and control at least one magnetic field that described magnetic field generation device produces in described print procedure described at least one parts that comprise described ferrimagnet are produced to the magnetic field force that meets described required support force, comprising:

At least according to described required support force, apply position, size and Orientation, control described at least one printing head and in described print procedure, export the position of ferrimagnet, and control at least one magnetic field that described magnetic field generation device produces in described print procedure at magnetic field intensity and the magnetic direction at the ferrimagnet place of described at least one shower nozzle output.

Particularly, the position that described at least one printing head is exported ferrimagnet in described print procedure is in described at least one parts.Alternatively, the described ferrimagnet of at least part of use of described at least one parts is printed, and the material of described at least one parts comprises ferrimagnet.

If the ferrimagnet in described at least one parts is only arranged in a magnetic field, the magnetic field force that described at least one parts are suffered apply the position that the ferrimagnet in described at least one parts is depended in position, the size of the magnetic field force that described at least one parts are suffered depends on this magnetic field in the magnetic field intensity at described ferrimagnet place, the projected area of the susceptibility of described ferrimagnet, described ferrimagnet magnetic direction in Xiang Gai magnetic field, distributed areas in described at least one parts.If the ferrimagnet in described at least one parts is arranged in a plurality of magnetic field, the magnetic field force in the suffered described a plurality of magnetic fields of described at least one parts is the making a concerted effort of magnetic field force in each suffered magnetic field of described at least one parts.

In the optional implementation of this contactless bracing or strutting arrangement, correspondingly, described magnetic field generation device also has multiple implementation.

In the optional implementation producing in a kind of magnetic field, described magnetic field generation device comprises: be arranged on described print area at least one pair of conductive coil around.

Fig. 3 B is the generation schematic diagram in a kind of magnetic field in the application.As shown in Figure 3 B, loop A, B are a pair of coaxial circular coil parallel to each other, the number of turn of each coil is N, radius is R, distance between loop A, B is d, the sense of current in loop A, B is clockwise and size of current identical (being designated as I), as shown by arrows in FIG., on the axis of loop A, B, the formula for magnetic field intensity H (1) of any point represents magnetic direction between loop A, B:

H = \frac{1}{2} μ_{0} \cdot N \cdot I \cdot R^{2} {{[R^{2} + {(\frac{d^{2}}{2} + x)}^{2}]}^{- 3 / 2} + {[R^{2} + {(\frac{d^{2}}{2} - x)}^{2}]}^{- 3 / 2}} - - - (1)

Wherein, μ ₀for space permeability, x is the distance of this point and loop A, the central point O of B on axis.Known according to formula (1), when enough hour of the radius R of loop A, B, for the arbitrary position between A, B, the magnetic field intensity H of the Gai position, magnetic field that loop A, B produce at least can be by the distance d between the size of current I in control coil A, B, loop A, B, the distance x in the centre position of this position and loop A, B controls, and the direction of the magnetic field force of this position at least can be controlled by the sense of current and the axis direction of control coil A, B.

For instance, upper at 3D printer, under, left, right, before, rear side arranges respectively a conductive coil array: in a kind of possible scene, from upper, in downside conductive coil array, select respectively two coils, form the coaxial coil shown in two couples of Fig. 3 B, the magnetic field that produces respectively an above-below direction between these two pairs of coaxial coils, the ferrimagnet that is arranged in these two magnetic fields is subject to respectively the magnetic field force in these two magnetic fields after being magnetized, the magnetic field force in these two magnetic fields is above-below direction, the described required support force of making a concerted effort to meet after the magnetic field force stack in these two magnetic fields, in another possible scene, from upper, in downside conductive coil array, select respectively a coil, the coaxial coil shown in Fig. 3 B partners, between this is to coaxial coil, produce the magnetic field of an above-below direction, in the past, in rear side conductive coil array, select respectively a coil, the coaxial coil shown in Fig. 3 B partners, between this is to coaxial coil, produce the magnetic field of a fore-and-aft direction, the ferrimagnet that is simultaneously arranged in these two magnetic fields is subject to the magnetic field force in these two magnetic fields after being magnetized simultaneously, the magnetic field force in one of them magnetic field is above-below direction, the magnetic field force in another magnetic field is fore-and-aft direction, the described required support force of making a concerted effort to meet after the magnetic field force stack in these two magnetic fields.

In the optional implementation producing in this magnetic field, for simplifying, control, alternatively, in described print procedure, do not change the axis direction of described at least one pair of conductive coil and the distance between described at least one pair of conductive coil, but optionally change size of current and the sense of current of described at least one pair of conductive coil, to control the size and Orientation of magnetic field force suffered in the magnetic field that ferrimagnet produces in described at least one pair of lead loop.

In a kind of possible scene, the applying position, size and Orientation and all can be expressed as and take the function that at least one parameter relevant with described print procedure be independent variable of the support force that described at least one parts are required.

Alternatively, describedly at least according to described required support force, apply position, size and Orientation, control described at least one printing head and in described print procedure, export the position of ferrimagnet, and control at least one magnetic field that described magnetic field generation device produces in described print procedure at magnetic field intensity and the magnetic direction at the ferrimagnet place of described at least one shower nozzle output, comprising:

At least according to described required support force, apply position, size and Orientation, determine that position that described at least one printing head is exported ferrimagnet in described print procedure take the function that at least one parameter relevant with described print procedure be independent variable, and the size of current of described at least one pair of conductive coil, the sense of current be take at least one parameter relevant with the described print procedure function that is independent variable;

The function that at least one parameter relevant with described print procedure is independent variable be take in the position of exporting ferrimagnet according to described at least one printing head in described print procedure, at the currency of at least one parameter described in described print procedure, control the position of described at least one printing head output ferrimagnet;

According to the size of current of described at least one pair of conductive coil, the sense of current, take the function that at least one parameter relevant with described print procedure be independent variable, and, at the currency of at least one parameter described in described print procedure, control size of current, the sense of current of described at least one pair of conductive coil.

In the present embodiment, at least one relevant parameter of described and described print procedure has multiple possibility.A kind ofly may be, at least one parameter relevant with described print procedure be included in the time in described print procedure, such as, the time that described print procedure has carried out.

Conventionally, the printing head of 3D printer progressively prints described object on described print platform, in print procedure, printing head and/or print platform have two kinds of move modes alternatively: a kind of mode is that print platform moves in vertical direction, printing head moves on horizontal plane, and a kind of mode is that print platform is motionless, printing head moves in three dimensions.Correspondingly, another may be that at least one parameter relevant with described print procedure comprises the position of described print platform and/or printing head.

In the optional implementation of another contactless bracing or strutting arrangement, described contactless bracing or strutting arrangement comprises and is arranged on print area a plurality of passages around.Correspondingly, at least, by controlling pressure and the ventilation direction of passage described in each, control described contactless bracing or strutting arrangement and to described at least one parts, provide the active force that meets described required support force in described print procedure.

In the present embodiment, alternatively, 120 comprise:

At least according to described required support force, apply position, size and Orientation, the control instruction of generation to described contactless bracing or strutting arrangement, described control instruction provides to described at least one parts the active force that meets described required support force at described print procedure for controlling described contactless bracing or strutting arrangement;

In described print procedure, according to described control instruction, control described contactless bracing or strutting arrangement.

Alternatively, 3D prints servicing unit and before described print procedure starts, carries out 110, generate described control instruction and preserve, and after described print procedure starts, according to described control instruction, controls described contactless bracing or strutting arrangement.For instance, described control instruction can comprise: the function that at least one parameter relevant with described print procedure is independent variable be take in the position that described at least one printing head is exported ferrimagnet in described print procedure, and the size of current of described at least one pair of conductive coil, the sense of current be take at least one parameter relevant with the described print procedure function that is independent variable.

A kind of 3D that Fig. 4 provides for the application prints the schematic flow sheet of householder method embodiment bis-.As shown in Figure 4, the present embodiment comprises:

410,, according to shape, the material of at least part of object that printed, that determines support force that at least one parts in described at least part of object are required applies position, size and Orientation.

For instance, the 3D that a kind of 3D that the application provides prints described in servicing unit embodiment bis-prints servicing unit as the executive agent of the present embodiment, carries out 410～420.Wherein, described 3D printing servicing unit can be integrated in the form of hardware and/or software in 3D printer.

In the present embodiment, described at least part of object can be a complete object of having printed, or, a part of object printing in print procedure.In print procedure, described at least part of object is changing always, and alternatively, described 3D prints servicing unit and from print procedure, starts to carry out in real time the method for the present embodiment.

In the present embodiment, alternatively, the shape of described at least part of object, material are according to the printer model file of described object and be currently located in the print procedure of described object which in stage and determine.Wherein, a kind of 3D that the printer model file of described object provides with reference to the application alternatively prints the corresponding description in householder method embodiment mono-.Alternatively, the shape of described at least part of object, material can measure in real time.

420, at least according to described required support force apply position, size and Orientation, control a contactless bracing or strutting arrangement and provide to described at least one parts the active force that meets described required support force.

In the present embodiment, in 410, determine applying position, direction and size and can being of support force that at least one parts in described at least part of object are required, determine the occurrence that applies position, direction and size of described required support force, or that determines described required support force applies position, direction and the required satisfied condition of size.Correspondingly, in 420, can be, at least according to the occurrence that applies position, direction and size of described required support force, control a contactless bracing or strutting arrangement and provide to described at least one parts the active force that applies equally position, size and Orientation, or, at least according to described required support force apply position, direction and the required satisfied condition of size, controlling a contactless bracing or strutting arrangement provides and applies the active force that position, size and Orientation meet described condition described at least one parts.

Alternatively, control contactless bracing or strutting arrangement and towards described direction, described at least one parts are applied the active force of described size in the described position that applies.

The shape of at least part of object that the present embodiment has printed by basis, material, determine the position that applies of support force that at least one parts in described at least part of object are required, size and Orientation, and control a contactless bracing or strutting arrangement and provide to described at least one parts the active force that meets described required support force, the scheme that provides a kind of auxiliary 3D to print, particularly, utilize contactless support force to replace at least in part the supporting construction of printing to support parts, time-write interval and printed material have been saved, and avoided the impact of excision supporting construction on object outward appearance.

In the present embodiment, between the each several part due to adjacency in an object, there is stress, correspondingly, can described object be divided into a plurality of parts according to mutual stress.Because the stress between the each several part of adjacency in an object may change along with print procedure, alternatively, the division of described middle parts of objects part also may be along with print procedure changes.

Wherein, some parts may need to support in print procedure, and some parts may not need to support in print procedure.Alternatively, shape, the material of at least part of object that the present embodiment has printed in described basis, determine support force that at least one parts in described at least part of object are required apply position, size and Orientation before, also comprise:

According to shape and the material of printed one at least part of object, determine described at least one parts that need support in described at least part of object.

In the present embodiment, alternatively, for the required support force of described at least one parts, can be based on constraintss such as equalising torque and stress balances, that determines described required support force applies position, direction and size.With parts for instance, Fig. 2 A, 2B are respectively in the application in print procedure not a kind of schematic diagram of the required support force of parts in the same time.At t1, constantly carry out the method for the present embodiment, as shown in Figure 2 A, the corresponding description that a kind of 3D that concrete definite mode can REFERENCE TO RELATED provides prints householder method embodiment mono-, repeats no more the required support force T1 of parts 1 herein; At t2, constantly carry out the method for the present embodiment, as shown in Figure 2 B, the corresponding description that a kind of 3D that concrete definite mode can REFERENCE TO RELATED provides prints householder method embodiment mono-, repeats no more the required support force T2 of parts 1 herein.

In a kind of optional implementation of contactless bracing or strutting arrangement, the material of described at least one parts comprises ferrimagnet; Described contactless bracing or strutting arrangement comprises: for produce a magnetic field generation device at least one magnetic field in print area.

In the optional implementation of this contactless bracing or strutting arrangement, correspondingly, controlling described contactless bracing or strutting arrangement provides the active force that meets described required support force also to have multiple implementation to described at least one parts.

In a kind of optional implementation of control, described at least according to described required support force apply position, size and Orientation, control a contactless bracing or strutting arrangement and provide to described at least one parts the active force that meets described required support force, comprising:

At least according to described required support force, apply position, size and Orientation, and the distribution of ferrimagnet in described at least one parts, control at least one magnetic field that described magnetic field generation device produces described at least one parts that comprise described ferrimagnet are produced to the magnetic field force that meets described required support force.

Wherein, in described at least one parts, the distribution of ferrimagnet can be determined according to the material of described at least one parts.Alternatively, ferrimagnet is uniformly distributed in described at least one parts.

Fig. 3 A is a kind of schematic diagram of parts suffered magnetic field force in a magnetic field in the application.As shown in Figure 3A, the magnetic direction in this magnetic field as shown by arrows in FIG., the magnetic field intensity in this magnetic field is H, in these parts, shadow region is ferrimagnet, and the projected area of this shadow region in the plane vertical with magnetic direction is S, and the magnetic induction intensity of this shadow region is B, correspondingly, the magnetic field force F=B*H*S/2 that these parts are suffered, the direction of magnetic field force F is consistent with magnetic direction, and the active position of magnetic field force F on these parts can be thought the center of this shadow region; Further, the susceptibility of ferrimagnet is Br, if do not consider the leakage field phenomenon after ferrimagnet is magnetized, can think B=Br.It will be understood by those skilled in the art that when the required support force of these parts reduces, can weaken the magnetic field intensity in this magnetic field, to reduce these parts suffered magnetic field force in this magnetic field.

Alternatively, describedly at least according to described required support force, apply position, size and Orientation, and the distribution of ferrimagnet in described at least one parts, at least one magnetic field of controlling described magnetic field generation device generation produces to described at least one parts that comprise described ferrimagnet the magnetic field force that meets described required support force, comprising:

At least according to described required support force, apply position, size and Orientation, and the distribution of ferrimagnet in described at least one parts, control magnetic field intensity and the magnetic direction at the ferrimagnet place in described at least one parts, at least one magnetic field that described magnetic field generation device produces.

Fig. 3 B is the generation schematic diagram in a kind of magnetic field in the application.As shown in Figure 3 B, loop A, B are a pair of coaxial circular coil parallel to each other, the number of turn of each coil is N, radius is R, distance between loop A, B is d, the sense of current in loop A, B is clockwise and size of current identical (being designated as I), as shown by arrows in FIG., on the axis of loop A, B, the formula for magnetic field intensity H (1) of any point represents, repeats no more herein for loop A, B magnetic direction around.Known according to formula (1), when enough hour of the radius R of loop A, B, for the arbitrary position between A, B, the magnetic field intensity H of the Gai position, magnetic field that loop A, B produce at least can be by the distance d between the size of current I in control coil A, B, loop A, B, the distance x of the central point of this position and loop A, B controls, and the direction of the magnetic field force of this position at least can be controlled by the sense of current and the axis direction of control coil A, B.

In the optional implementation producing in this magnetic field, for simplifying, control, alternatively, when the magnetic field intensity at the ferrimagnet place of at least one magnetic field producing at the described magnetic field generation device of control in described at least one parts and magnetic direction, do not change the axis direction of described at least one pair of conductive coil and the distance between described at least one pair of conductive coil, but optionally change size of current and the sense of current of described at least one pair of conductive coil, to control the size and Orientation of ferrimagnet suffered magnetic field force in the magnetic field of described at least one pair of lead loop generation.

In the optional implementation of another contactless bracing or strutting arrangement, described contactless bracing or strutting arrangement comprises and is arranged on print area a plurality of passages around.Correspondingly, at least, by controlling pressure and the ventilation direction of passage described in each, control described contactless bracing or strutting arrangement and provide to described at least one parts the active force that meets described required support force.

A kind of 3D that Fig. 5 A provides for the application prints the structural representation of servicing unit embodiment mono-.As shown in Figure 5A, 3D printing servicing unit 500 comprises:

The first determination module 51, for according to the printer model file of an object, determine at least one parts in described object in the print procedure of described object required support force apply position, size and Orientation;

Control module 52, at least according to described required support force apply position, size and Orientation, control a contactless bracing or strutting arrangement and to described at least one parts, provide the active force that meets described required support force in described print procedure.

In the present embodiment, the first determination module 51 can be determined the occurrence that applies position, size and Orientation of described required support force, or that determines described required support force applies position, the required satisfied condition of size and Orientation.Correspondingly, control module 52 can at least be controlled a contactless bracing or strutting arrangement according to the occurrence that applies position, size and Orientation of described required support force and to described at least one parts, provide the active force that applies equally position, size and Orientation in described print procedure, or, at least according to described required support force apply position, the required satisfied condition of size and Orientation, control a contactless bracing or strutting arrangement provides and applies the active force that position, size and Orientation meet described condition described at least one parts in described print procedure.

Alternatively, control module 52 is controlled described contactless bracing or strutting arrangement and towards described direction, described at least one parts is applied the active force of described size in the described position that applies.

In the present embodiment, control module 52 is controlled described contactless bracing or strutting arrangement and is adopted non-contacting mode that described active force is provided, and the described active force that described contactless bracing or strutting arrangement provides described at least one parts does not produce with contacting of described at least one parts based on described contactless bracing or strutting arrangement.Alternatively, described contactless bracing or strutting arrangement does not contact with described at least one parts, and further alternatively, described contactless bracing or strutting arrangement does not contact with other parts of described object.For instance, the described active force that described contactless bracing or strutting arrangement provides can be, the impulse force of gas or suction, the electric field force of electric field to electrical body, the active force of ultrasonic wave or light wave etc.

The 3D of the present embodiment prints servicing unit 500 and can with the form of hardware and/or software, be arranged in a 3D printer.Alternatively, described contactless bracing or strutting arrangement is also arranged in described 3D printer.

The 3D of the present embodiment prints servicing unit and passes through the first determination module according to the printer model file of an object, determine at least one parts in described object in the print procedure of described object required support force apply position, size and Orientation, control module is controlled a contactless bracing or strutting arrangement and to described at least one parts, provide the active force that meets described required support force in described print procedure, the scheme that provides a kind of auxiliary 3D to print, particularly, utilize contactless support force to replace at least in part the supporting construction of printing to support parts, time-write interval and printed material have been saved, and avoided the impact of excision supporting construction on object outward appearance.

The 3D that the present embodiment is described further below by some optional implementations prints servicing unit 500.

Wherein, some parts may need to support in print procedure, and some parts may not need to support in print procedure.Alternatively, as shown in Figure 5 B, 3D prints servicing unit 500 and also comprises: the second determination module 53, for according to described printer model file, determine described at least one parts that need support in described object in described print procedure.

For instance, for each parts, the second determination module 53 all can be determined according to the shape of these parts, material the center of gravity of these parts, further, at least according to the center of gravity of these parts, with each parts of this members abut and the structural relation of these parts, and these parts and with the page order of each parts of this members abut, can determine whether these parts need to support.

In the present embodiment, between each parts due to adjacency in an object, have stress, and the page order of each parts has successively, therefore, in the print procedure of described object, whether each parts need support force and required support force all can change.Alternatively, at least one parts that the definite needs of the second determination module 53 support change with described print procedure.Correspondingly, if described at least one parts that the second determination module 53 is determined change with described print procedure, and the required support force of described at least one parts that the first determination module 51 is determined changes with described print procedure, control module 52 is controlled described contactless bracing or strutting arrangement provides and meets the active force that changes required support force with described print procedure described at least one parts that change with described print procedure.

Fig. 2 A, 2B are respectively in the application in print procedure not a kind of schematic diagram of the required support force of parts in the same time.At t1 constantly, as shown in Figure 2 A, the corresponding description that a kind of 3D that concrete definite mode can REFERENCE TO RELATED provides prints householder method embodiment mono-, repeats no more the required support force T1 of the first determination module 51 determining meanss 1 herein; At t2 constantly, as shown in Figure 2 B, the corresponding description that a kind of 3D that concrete definite mode can REFERENCE TO RELATED provides prints householder method embodiment mono-, repeats no more the required support force T2 of the first determination module 51 determining meanss 1 herein.Comparison diagram 2A, 2B can find out, the required support force of parts 1 changes with print procedure.

In the optional implementation of this contactless bracing or strutting arrangement, correspondingly, control module 52 is controlled described contactless bracing or strutting arrangement provides the active force that meets described required support force also to have multiple implementation to described at least one parts in described print procedure.

In a kind of optional implementation of control, control module 52 specifically for: at least according to described required support force, apply position, size and Orientation, control ferrimagnet that described at least one printing head exports in the described print procedure position in described at least one parts, and control at least one magnetic field that described magnetic field generation device produces in described print procedure described at least one parts that comprise described ferrimagnet are produced to the magnetic field force that meets described required support force.

Alternatively, control module 52 specifically for: at least according to described required support force, apply position, size and Orientation, control described at least one printing head and in described print procedure, export the position of ferrimagnet, and control at least one magnetic field that described magnetic field generation device produces in described print procedure at magnetic field intensity and the magnetic direction at the ferrimagnet place of described at least one shower nozzle output.

A kind of 3D that the specific implementation of this implementation can provide with reference to the application prints householder method embodiment mono-.

In the optional implementation of another contactless bracing or strutting arrangement, described contactless bracing or strutting arrangement comprises and is arranged on print area a plurality of passages around.Correspondingly, control module 52 at least, by controlling pressure and the ventilation direction of passage described in each, is controlled described contactless bracing or strutting arrangement and to described at least one parts, provide the active force that meets described required support force in described print procedure.

In the present embodiment, alternatively, control module 52 comprises:

Instruction generation unit, for at least applying position, size and Orientation according to described required support force, the control instruction of generation to described contactless bracing or strutting arrangement, described control instruction provides to described at least one parts the active force that meets described required support force at described print procedure for controlling described contactless bracing or strutting arrangement;

Control module, at described print procedure, controls described contactless bracing or strutting arrangement according to described control instruction.

Alternatively, described instruction generation unit generated described control instruction and preserves before described print procedure starts, and described control module is controlled described contactless bracing or strutting arrangement according to described control instruction after described print procedure starts.For instance, described control instruction can comprise: the function that at least one parameter relevant with described print procedure is independent variable be take in the position that described at least one printing head is exported ferrimagnet in described print procedure, and the size of current of described at least one pair of conductive coil, the sense of current be take at least one parameter relevant with the described print procedure function that is independent variable.

A kind of 3D that Fig. 6 A provides for the application prints the structural representation of servicing unit embodiment bis-.As shown in Figure 6A, 3D printing servicing unit 600 comprises:

The first determination module 61, for according to shape, the material of at least part of object that printed, that determines support force that at least one parts in described at least part of object are required applies position, size and Orientation;

Control module 62, at least according to described required support force apply position, size and Orientation, control a contactless bracing or strutting arrangement and provide to described at least one parts the active force that meets described required support force.

In the present embodiment, described at least part of object can be a complete object of having printed, or, a part of object printing in print procedure.In print procedure, described at least part of object is changing always, alternatively, starts to start 3D print servicing unit 600 from print procedure.

In the present embodiment, the first determination module 61 can be determined the occurrence that applies position, size and Orientation of described required support force, or that determines described required support force applies position, the required satisfied condition of size and Orientation.Correspondingly, control module 62 can at least be controlled a contactless bracing or strutting arrangement according to the occurrence that applies position, size and Orientation of described required support force and provide to described at least one parts the active force that applies equally position, size and Orientation, or, at least according to described required support force apply position, the required satisfied condition of size and Orientation, controlling a contactless bracing or strutting arrangement provides and applies the active force that position, size and Orientation meet described condition described at least one parts.

Alternatively, described in contactless being supported on of control module 62 control, apply position and towards described direction, described at least one parts are applied the active force of described size.

In the present embodiment, control module 62 is controlled described contactless bracing or strutting arrangement and is adopted non-contacting mode that described active force is provided, and the described active force that described contactless bracing or strutting arrangement provides described at least one parts does not produce with contacting of described at least one parts based on described contactless bracing or strutting arrangement.Alternatively, described contactless bracing or strutting arrangement does not contact with described at least one parts, and further alternatively, described contactless bracing or strutting arrangement does not contact with other parts of described object.For instance, the described active force that described contactless bracing or strutting arrangement provides can be, the impulse force of gas or suction, the electric field force of electric field to electrical body, the active force of ultrasonic wave or light wave etc.

The 3D of the present embodiment prints servicing unit 600 and can with the form of hardware and/or software, be arranged in a 3D printer.Alternatively, described contactless bracing or strutting arrangement is also arranged in described 3D printer.

The shape of at least part of object that the 3D printing servicing unit of the present embodiment has printed by the first determination module basis, material, determine the position that applies of support force that at least one parts in described at least part of object are required, size and Orientation, control module is controlled a contactless bracing or strutting arrangement and is provided to described at least one parts the active force that meets described required support force, the scheme that provides a kind of auxiliary 3D to print, particularly, utilize contactless support force to replace at least in part the supporting construction of printing to support parts, time-write interval and printed material have been saved, and avoided the impact of excision supporting construction on object outward appearance.

The 3D that the present embodiment is described further below by some optional implementations prints servicing unit 600.

Wherein, some parts may need to support, and some parts may not need to support.Alternatively, as shown in Figure 6B, 3D prints servicing unit 600 and also comprises:

The second determination module 63, for according to shape and the material of at least part of object having printed, determines described at least one parts that need support in described at least part of object.

For instance, for each parts, the second determination module 63 all can be determined according to the shape of these parts, material the center of gravity of these parts, further, at least according to the center of gravity of these parts, with each parts of this members abut and the structural relation of these parts, and these parts and with the page order of each parts of this members abut, can determine whether these parts need to support.

In the present embodiment, alternatively, for the required support force of described at least one parts, the first determination module 61 can be based on constraintss such as equalising torque and stress balances, and that determines described required support force applies position, direction and size.With parts for instance, Fig. 2 A, 2B are respectively in the application in print procedure not a kind of schematic diagram of the required support force of parts in the same time.At t1 constantly, as shown in Figure 2 A, the corresponding description that a kind of 3D that concrete definite mode can REFERENCE TO RELATED provides prints householder method embodiment mono-, repeats no more the required support force T1 of the first determination module 61 determining meanss 1 herein; At t2 constantly, as shown in Figure 2 B, the corresponding description that a kind of 3D that concrete definite mode can REFERENCE TO RELATED provides prints householder method embodiment mono-, repeats no more the required support force T2 of the first determination module 61 determining meanss 1 herein.

In the optional implementation of this contactless bracing or strutting arrangement, correspondingly, control module 62 is controlled described contactless bracing or strutting arrangement provides the active force that meets described required support force also to have multiple implementation to described at least one parts.

In a kind of optional implementation of control, control module 62 specifically for: at least according to described required support force, apply position, size and Orientation, and the distribution of ferrimagnet in described at least one parts, control at least one magnetic field that described magnetic field generation device produces described at least one parts that comprise described ferrimagnet are produced to the magnetic field force that meets described required support force.

Alternatively, control module 62 specifically for: at least according to described required support force, apply position, size and Orientation, and the distribution of ferrimagnet in described at least one parts, control magnetic field intensity and the magnetic direction at the ferrimagnet place in described at least one parts, at least one magnetic field that described magnetic field generation device produces.

A kind of 3D that the specific implementation of this implementation can provide with reference to the application prints householder method embodiment bis-.

In the optional implementation of another contactless bracing or strutting arrangement, described contactless bracing or strutting arrangement comprises and is arranged on print area a plurality of passages around.Correspondingly, control module 62 at least, by controlling pressure and the ventilation direction of passage described in each, is controlled described contactless bracing or strutting arrangement and is provided to described at least one parts the active force that meets described required support force.

The structural representation of a kind of 3D printer embodiment that Fig. 7 A provides for the application.As shown in Figure 7 A, 3D printer 700 comprises: a 3D prints servicing unit 71 and a contactless bracing or strutting arrangement 72.

In a kind of optional implementation, the 3D that a kind of 3D that 3D prints servicing unit 71 to be provided for the application prints described in servicing unit embodiment mono-prints servicing unit, correspondingly, 3D print servicing unit 71 for: according to the printer model file of an object, determine at least one parts in described object in the print procedure of described object required support force apply position, size and Orientation; At least according to described required support force apply position, size and Orientation, control contactless bracing or strutting arrangement 72 and to described at least one parts, provide the active force that meets described required support force in described print procedure.

A kind of 3D that the specific implementation of this implementation can provide with reference to the application prints servicing unit embodiment mono-.

In another optional implementation, the 3D that a kind of 3D that 3D prints servicing unit 71 to be provided for the application prints described in servicing unit embodiment bis-prints servicing unit, correspondingly, 3D print servicing unit 71 for: according to shape, the material of printed one at least part of object, that determines support force that at least one parts in described at least part of object are required applies position, size and Orientation; At least according to described required support force apply position, size and Orientation, control at least one parts described in 72 pairs of contactless bracing or strutting arrangements the active force that meets described required support force be provided.

A kind of 3D that the specific implementation of this implementation can provide with reference to the application prints servicing unit embodiment bis-.

In the present embodiment, contactless bracing or strutting arrangement 72 also has multiple implementation.In a kind of optional implementation, as shown in Figure 7 B, contactless bracing or strutting arrangement 72 comprises: for exporting at least one printing head 721 of ferrimagnet, and for produce a magnetic field generation device 722 at least one magnetic field in print area.It should be noted that, in figure, only with a printing head 721, illustrate, and do not mean that the restriction to 721 numbers of printing head in this implementation.

Further alternatively, magnetic field generation device 722 comprises: be arranged on described print area at least one pair of conductive coil around.

In the optional implementation of another, contactless bracing or strutting arrangement 72 comprises: be arranged on described print area a plurality of passages around.

Further alternatively, contactless bracing or strutting arrangement 72 comprises: be arranged at least one passage array of at least one side of described print area, each passage array comprises a plurality of passages of arranging by certain way.

Correspondingly, 3D prints servicing unit 71 at least by controlling pressure and the ventilation direction of passage described in each, controls at least one parts described in 72 pairs of contactless bracing or strutting arrangements the active force that meets described required support force is provided.

The 3D printer of the present embodiment is printed servicing unit according to the printer model file of an object by 3D, determine at least one parts in described object in the print procedure of described object required support force apply position, size and Orientation, and control a contactless bracing or strutting arrangement to described at least one parts, provide the active force that meets described required support force in described print procedure, or, according to the shape of printed one at least part of object, material, determine the position that applies of support force that at least one parts in described at least part of object are required, size and Orientation, and control a contactless bracing or strutting arrangement and provide to described at least one parts the active force that meets described required support force, the scheme that provides a kind of auxiliary 3D to print, particularly, utilize contactless support force to replace at least in part the supporting construction of printing to support parts, time-write interval and printed material have been saved, and avoided the impact of excision supporting construction on object outward appearance.

Those of ordinary skills can recognize, unit and the method step of each example of describing in conjunction with embodiment disclosed herein, can realize with the combination of electronic hardware or computer software and electronic hardware.These functions are carried out with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can specifically should be used for realizing described function with distinct methods to each, but this realization should not thought and exceeds scope of the present invention.

If described function usings that the form of SFU software functional unit realizes and during as production marketing independently or use, can be stored in a computer read/write memory medium.Understanding based on such, the part that technical scheme of the present invention contributes to original technology in essence in other words or the part of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprise that some instructions are with so that a computer equipment (can be personal computer, server, or the network equipment etc.) carry out all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only storage (ROM, Read-Only Memory), the various media that can be program code stored such as random access memory (RAM, Random Access Memory), magnetic disc or CD.

Above embodiment is only for illustrating the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.

Claims

1. 3D prints a householder method, it is characterized in that, described method comprises:

2. method according to claim 1, is characterized in that, described printer model file comprises: the shape of described object, material, page order.

3. method according to claim 1 and 2, is characterized in that, apply position, size and/or the direction of described required support force change with described print procedure.

4. according to arbitrary described method in claim 1～3, it is characterized in that, described contactless bracing or strutting arrangement comprises: for exporting at least one printing head of ferrimagnet, and for produce a magnetic field generation device at least one magnetic field in print area.

5. method according to claim 4, it is characterized in that, describedly at least according to described required support force, apply position, size and Orientation, control a contactless bracing or strutting arrangement and to described at least one parts, provide the active force that meets described required support force in described print procedure, comprising:

At least according to described required support force, apply position, size and Orientation, control the distribution in described at least one parts of ferrimagnet that described at least one printing head exports in described print procedure, and control at least one magnetic field that described magnetic field generation device produces in described print procedure described at least one parts that comprise described ferrimagnet are produced to the magnetic field force that meets described required support force.

6. method according to claim 5, it is characterized in that, describedly at least according to described required support force, apply position, size and Orientation, control the distribution in described at least one parts of ferrimagnet that described at least one printing head exports in described print procedure, and control at least one magnetic field that described magnetic field generation device produces in described print procedure described at least one parts that comprise described ferrimagnet are produced to the magnetic field force that meets described required support force, comprising:

7. according to arbitrary described method in claim 4～6, it is characterized in that, described magnetic field generation device comprises: be arranged on described print area at least one pair of conductive coil around.

8. according to arbitrary described method in claim 1～7, it is characterized in that, described according to the printer model file of an object, determine at least one parts in described object in the print procedure of described object required support force apply position, size and Orientation before, also comprise:

9. 3D prints a householder method, it is characterized in that, described method comprises:

10. method according to claim 9, is characterized in that, the material of described at least one parts comprises ferrimagnet; Described contactless bracing or strutting arrangement comprises: for produce a magnetic field generation device at least one magnetic field in print area.

11. methods according to claim 10, it is characterized in that, described at least according to described required support force apply position, size and Orientation, control a contactless bracing or strutting arrangement and provide to described at least one parts the active force that meets described required support force, comprising:

12. methods according to claim 11, it is characterized in that, describedly at least according to described required support force, apply position, size and Orientation, and the distribution of ferrimagnet in described at least one parts, at least one magnetic field of controlling described magnetic field generation device generation produces to described at least one parts that comprise described ferrimagnet the magnetic field force that meets described required support force, comprising:

13. according to arbitrary described method in claim 10～12, it is characterized in that, described magnetic field generation device comprises: be arranged on described print area at least one pair of conductive coil around.

14. according to arbitrary described method in claim 9～13, it is characterized in that, shape, the material of at least part of object having printed in described basis, determine support force that at least one parts in described at least part of object are required apply position, size and Orientation before, also comprise:

15. 1 kinds of 3D print servicing unit, it is characterized in that, described device comprises:

16. devices according to claim 15, is characterized in that, described printer model file comprises: the shape of described object, material, page order.

17. according to the device described in claim 15 or 16, it is characterized in that, apply position, size and/or the direction of described required support force change with described print procedure.

18. according to arbitrary described device in claim 15～17, it is characterized in that, described contactless bracing or strutting arrangement comprises: for exporting at least one printing head of ferrimagnet, and for produce a magnetic field generation device at least one magnetic field in print area.

19. devices according to claim 18, it is characterized in that, described control module specifically for: at least according to described required support force, apply position, size and Orientation, control the distribution in described at least one parts of ferrimagnet that described at least one printing head exports in described print procedure, and control at least one magnetic field that described magnetic field generation device produces in described print procedure described at least one parts that comprise described ferrimagnet are produced to the magnetic field force that meets described required support force.

20. devices according to claim 19, it is characterized in that, described control module specifically for: at least according to described required support force, apply position, size and Orientation, control described at least one printing head and in described print procedure, export the position of ferrimagnet, and control at least one magnetic field that described magnetic field generation device produces in described print procedure at magnetic field intensity and the magnetic direction at the ferrimagnet place of described at least one shower nozzle output.

21. according to arbitrary described device in claim 18～20, it is characterized in that, described magnetic field generation device comprises: be arranged on described print area at least one pair of conductive coil around.

22. according to arbitrary described device in claim 15～21, it is characterized in that, described device also comprises: the second determination module, for according to described printer model file, determine described at least one parts that need support in described object in described print procedure.

23. 1 kinds of 3D print servicing unit, it is characterized in that, described device comprises:

24. devices according to claim 23, is characterized in that, the material of described at least one parts comprises ferrimagnet; Described contactless bracing or strutting arrangement comprises: for produce a magnetic field generation device at least one magnetic field in print area.

25. devices according to claim 24, it is characterized in that, described control module specifically for: at least according to described required support force, apply position, size and Orientation, and the distribution of ferrimagnet in described at least one parts, control at least one magnetic field that described magnetic field generation device produces described at least one parts that comprise described ferrimagnet are produced to the magnetic field force that meets described required support force.

26. devices according to claim 25, is characterized in that, described control module specifically for:

27. according to arbitrary described device in claim 24～26, it is characterized in that, described magnetic field generation device comprises: be arranged on described print area at least one pair of conductive coil around.

28. according to arbitrary described device in claim 23～27, it is characterized in that, described device also comprises:

The second determination module, for according to shape and the material of at least part of object having printed, determines described at least one parts that need support in described at least part of object.

29. 1 kinds of 3D printers, is characterized in that, comprising: just like arbitrary described 3D in claim 15～28, print servicing unit and described contactless bracing or strutting arrangement.