CN104191621A

CN104191621A - 3D printing assisting method and device as well as 3D printer

Info

Publication number: CN104191621A
Application number: CN201410432686.1A
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: CN104191621B

Abstract

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

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 for example, in eaves shape or head portrait outstanding nose shape, 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 provide to described at least one parts 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 the required support force of at least one parts in described at least part of object 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 provide to described at least one parts 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 the required support force of at least one parts in described at least part of object 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 multiple 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 provide to described at least one parts 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 are saved, and avoid the impact of excision supporting construction on object outward appearance.

Brief description of the drawings

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 is a kind of schematic diagram of parts suffered electric field force between a pair of pole plate 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.

Detailed description of the invention

Below in conjunction with drawings and Examples, the application's detailed description of the invention 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 the executive agent of servicing unit as the present embodiment, carries out 110～120.Wherein, described 3D printing servicing unit can be arranged in a 3D printer with the form of hardware and/or software.

120, 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 described print procedure.

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

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

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 provide to described at least one parts 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 are saved, and avoid 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 structural relation between shape and the various piece of various piece of described object; 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 multiple 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 the 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 illustrate with vertical two dimensional surface, and do not mean that the restriction to the application.Fig. 2 A is the part object printing in moment in the print procedure of described object of determining according to the printer model file of an object (representing with t1), Fig. 2 B is the part object another constantly in described print procedure (representing with t2) that determine according to described printer model file printing, t2>t1, the part object having printed in t1, t2 moment includes parts 1 and parts 2.

As shown in Figure 2 A, in the t1 moment, parts 2 produce stress N1 to parts 1 at adjoiner, N1 is no more than the maximum stress of the parts 2 that determined by structure, material etc. to parts 1, 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 ensure equalising torque, the moment of the required support force T1 of t1 moment parts 1 should equate with the moment G1*L1 of the gravity G1 of parts 1; In addition, taking vertical two dimensional surface as example, suppose that the component of stress N1 on x axle is component on y axle is the component of the required support force of t1 moment parts 1 on x axle is component on y axle is further contemplate the pressure P 1 of t1 moment printing head to the parts 1 of printing, suppose P1 vertically downward,, in order to ensure the stress balance of parts 1, N1, G1, T1, P1 need meet: based on the constraints of above-mentioned equalising torque and stress balance, can determining means 1 apply position, direction and size at required support force T1 of t1 moment; Further, based on the constraints of above-mentioned equalising torque and stress balance, multiple support force T1 may can be determined, the multiple 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, while all also not starting to print without other parts of other parts of adjacency, parts 1 adjacency such as parts 1; 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, in the t2 moment, parts 2 produce stress N2 to parts 1 at adjoiner, N2 is no more than the maximum stress of the parts 2 that determined by structure, material etc. to parts 1, 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 ensure equalising torque, the moment of the required support force T2 of t2 moment parts 1 should equate with the moment G2*L2 of the gravity G2 of parts 1; In addition, taking vertical two dimensional surface as example, suppose that the component of stress N2 on x axle is component on y axle is the component of the required support force of t2 moment parts 1 on x axle is component on y axle is further contemplate the pressure P 2 of t2 moment printing head to the parts 1 of printing, suppose P2 vertically downward,, in order to ensure the stress balance of parts 1, N2, G2, T2, P2 need meet: based on the constraints of above-mentioned equalising torque and stress balance, can determining means 1 apply position, direction and size at required support force T2 of t2 moment; Further, based on the constraints of above-mentioned equalising torque and stress balance, multiple support force T2 may can be determined, the multiple 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, while all also not starting to print without other parts of other parts of adjacency, parts 1 adjacency such as parts 1; 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 the parts 1 in t2 moment than the parts in t1 moment more than 1 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 the moment of parts 1 at required support force T1 of t1 moment in the moment of required support force T2 of t2 moment, correspondingly, than parts 1 required support force T1 of t1 moment apply position, direction and size, parts 1 apply position, direction and/or size and can change required support force T2's of t2 moment.

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 an electrifying device of powering on to described at least one parts and at least one pair of pole plate being arranged on around 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 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, describedly at least apply position, size and Orientation according to described required support force, 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 described print procedure, comprising:

At least apply position, size and Orientation according to described required support force, control described electrifying device in described print procedure to the powering on of described at least one parts, and control described at least one pair of pole plate, in described print procedure, described at least one parts produced to the electric field force that meets described required support force.

It should be noted that, if described at least one parts are positioned between multipair pole plate, charged described at least one parts are subject to the electric field force of multiple electric fields simultaneously, now, and the described required support force of making a concerted effort to meet of the electric field force of the plurality of electric field.

Fig. 3 is a kind of schematic diagram of parts suffered electric field force between a pair of pole plate in the application.As shown in Figure 3, the electrical potential difference between a pair of pole plate is U, and this is d to the distance between pole plate, and correspondingly, this is to the electric field strength E=U/d between pole plate, and what the direction of an electric field between this pole plate was positive charge is subject to force direction (as shown in the figure); The charged polarity of one parts is negative (-), the carried charge of these parts is Q, the direction of these parts suffered electric field force F between this is to pole plate as shown in the figure, the size of electric field force F can be calculated with following formula: F=Q*U/d, the active position of electric field force F on described parts can think in CHARGE DISTRIBUTION, to bear on these parts the center in the region of the poor maximum of positive charge, or, the position of the negative poor maximum of positive charge, wherein, the difference that the quantity that the poor quantity for negative electrical charge of negative positive charge deducts positive charge obtains.It will be understood by those skilled in the art that in the time that the required support force of these parts reduces, can weaken this to the electric-field intensity between pole plate, to reduce these parts suffered electric field force between this is to pole plate.

Alternatively, describedly at least apply position, size and Orientation according to described required support force, control described electrifying device powering on to described at least one parts in described print procedure, and described in controlling, at least one pair of pole plate produces to described at least one parts the electric field force that meets described required support force in described print procedure, comprising:

At least apply position, size and Orientation according to described required support force, control described the electrifying device upper electric position to described at least one parts, the polarity that powers on and upper electric weight in described print procedure, and control electric-field intensity and the direction of an electric field in described print procedure between described at least one pair of pole plate.

Particularly, the band electric position on described at least one parts is depended in the position that applies of described electric field force, electric-field intensity described in the size of described electric field force depends between at least one pair of pole plate and the carried charge of described at least one parts, the direction of an electric field described in the direction of described electric field force depends between at least one pair of pole plate and the charged polarity of described at least one parts; Conventionally, before described electrifying device powers on to described at least one parts, described at least one parts are not charged, it is positive and negative charge balance, under this scene, on described at least one parts, be equivalent to the upper electric position of described electrifying device to described at least one parts with electric position, the carried charge of described at least one parts equals the upper electric weight of described electrifying device to described at least one parts, and the charged polarity of described at least one parts is identical to the polarity that powers on of described at least one parts with described electrifying device.

Wherein, the electric-field intensity between described at least one pair of pole plate can be controlled by electrical potential difference and/or the distance of controlling described at least one pair of pole plate; Direction of an electric field between described at least one pair of pole plate can be controlled by the direction of controlling described at least one pair of pole plate.

For instance, up, down, left, right, before and after side at 3D printer arranges respectively a conductive grid: in a kind of possible scene, select certain voltage, select no-voltage to the conductive grid of downside to the conductive grid of upside by on-off circuit, simultaneously, disconnect the conductive grid of left, right, front and rear side, thereby only the conductive network of upper and lower side forms a pair of pole plate, and this is vertical to the direction of an electric field between pole plate.Further, can also, by controlling the break-make between each paths in a conductive grid, control the position of the pole plate of this conductive grid formation.

Conventionally,, if the position that applies of the required support force of described at least one parts changes with described print procedure, described electrifying device changes with described print procedure the upper electric position of described at least one parts; If the size of the required support force of described at least one parts changes with described print procedure, the electric-field intensity between described electrifying device upper electric weight and/or described at least one pair of pole plate to described at least one parts changes with described print procedure; If the direction of the required support force of described at least one parts changes with described print procedure, described electrifying device changes with described print procedure the direction of an electric field powering between polarity and/or described at least one pair of pole plate of described at least one parts.

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

Alternatively, describedly at least apply position, size and Orientation according to described required support force, control described the electrifying device upper electric position to described at least one parts, the polarity that powers on and upper electric weight in described print procedure, and control electric-field intensity and the direction of an electric field in described print procedure between described at least one pair of pole plate, comprising:

At least apply position, size and Orientation according to described required support force, determine the function of upper electric position, power on polarity and the upper electric weight of described electrifying device to described at least one parts taking at least one parameter relevant with described print procedure as independent variable, and electric-field intensity, the function of direction of an electric field taking at least one parameter relevant with described print procedure as independent variable between described at least one pair of pole plate;

Upper electric position according to described electrifying device to described at least one parts, the polarity that powers on and the upper electric weight function taking at least one parameter relevant with described print procedure as independent variable, at the currency of at least one parameter described in described print procedure, control electrifying device powering on to described at least one parts;

According to the electric-field intensity between described at least one pair of pole plate, the function of direction of an electric field taking at least one parameter relevant with described print procedure as independent variable, and, at the currency of at least one parameter described in described print procedure, control electric-field intensity, direction of an electric field between described at least one pair of pole plate.

In the present embodiment, at least one relevant parameter of described and described print procedure has multiple possibility.One may be, at least one parameter relevant with described print procedure is 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 this contactless bracing or strutting arrangement, correspondingly, described electrifying device also has multiple implementation.Alternatively, described electrifying device powers on at least one position on described at least one parts in non-contacting mode.

In a kind of optional implementation of electrifying device, described electrifying device is thermionic emission device, and described electrifying device is negative to the polarity that powers on of described at least one parts.

Particularly, described thermionic emission device can be to the position heat of emission electronics on described at least one parts, increase the quantity of the electronics of this position on described at least one parts, thereby make this position on described at least one parts present negative polarity, correspondingly, if this position on described at least one parts is arranged in an electric field, described at least one parts can be subject to electric field force in this position.Further, by controlling the thermionic number of described thermionic emission device to this position transmitting, i.e. the upper electric weight of described thermionic emission device, the quantity of the electronics of this position at least one parts described in controlling,, control the carried charge of this position on described at least one parts.

In the optional implementation of another electrifying device, described electrifying device is ultraviolet lamp, described electrifying device to the polarity that powers on of described at least one parts for just.

Particularly, described ultraviolet lamp can irradiate the position on described at least one parts, on described at least one parts, the electronics of this position is ejected from described at least one parts by ultraviolet ray, thereby make the quantity of this position positive charge on described at least one parts higher than the quantity of negative electrical charge, present positive polarity, correspondingly, if this position on described at least one parts is arranged in an electric field, described at least one parts can be subject to electric field force in this position.Further, the intensity of irradiating to this position by controlling described ultraviolet lamp, i.e. the upper electric weight of described ultraviolet lamp, the quantity that described in controlling, at least one parts, the electronics of this position is excited,, control the carried charge of this position on described at least one parts.

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

In the present embodiment, alternatively, 120 comprise:

At least apply position, size and Orientation according to described required support force, generate the control instruction 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 contactless bracing or strutting arrangement described in described control instruction control.

Alternatively, 3D print servicing unit before described print procedure starts, carry out 110, generate described control instruction and preserve, after described print procedure starts according to contactless bracing or strutting arrangement described in described control instruction control.For instance, described control instruction can comprise: the function of upper electric position, power on polarity and the upper electric weight of described electrifying device to described at least one parts taking at least one parameter relevant with described print procedure as independent variable, and electric-field intensity, the function of direction of an electric field taking at least one parameter relevant with described print procedure as independent variable between described at least one pair of pole plate.

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 the required support force of at least one parts in described at least part of object 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 the executive agent of servicing unit as the present embodiment, carries out 410～420.Wherein, described 3D printing servicing unit can be integrated in 3D printer with the form of hardware and/or software.

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 printing servicing unit starts to carry out in real time the method for the present embodiment from print procedure.

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 the required support force of at least one parts in described at least part of object apply position, size and Orientation can be, determine 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, in 420, can be, at least provide to described at least one parts the active force that applies equally position, size and Orientation according to the contactless bracing or strutting arrangement of occurrence control one that applies position, size and Orientation of described required support force, 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 and described at least one parts provided to the active force that applies position, size and Orientation and meet described condition.

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

The shape of at least part of object that the present embodiment has printed by basis, material, determine the position that applies of the required support force of at least one parts in described at least part of object, 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 are saved, and avoid 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 multiple 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 the required support force of at least one parts in described at least part of object 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 the constraints such as equalising torque and stress balance, 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.Carry out the method for the present embodiment in the t1 moment, 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; Carry out the method for the present embodiment in the t2 moment, 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 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 apply position, size and Orientation according to described required support force, control described electrifying device to the powering on of described at least one parts, and control described at least one pair of pole plate described at least one parts are produced to the electric field force that meets described required support force.

It should be noted that, if described at least one parts are positioned between multipair pole plate, charged described at least one parts are subject to the electric field force of multiple electric fields simultaneously, now, and the described required support force of at least one parts of making a concerted effort to meet of the electric field force of the plurality of electric field.

Fig. 3 is a kind of schematic diagram of parts suffered electric field force between a pair of pole plate in the application, repeats no more herein.

Alternatively, describedly at least apply position, size and Orientation according to described required support force, control powering on of at least one parts described in described electrifying device, and control described at least one pair of pole plate described at least one parts are produced to the electric field force that meets described required support force, comprising:

At least according to described required support force apply position, size and Orientation, control upper electric position, power on polarity and the upper electric weight of described electrifying device to described at least one parts, and control electric-field intensity and direction of an electric field between described at least one pair of pole plate.

In the optional implementation of another contactless bracing or strutting arrangement, described contactless bracing or strutting arrangement comprises and is arranged on print area multiple passages around.Correspondingly, at least, by controlling pressure and the ventilation direction of each described passage, controlling described contactless bracing or strutting arrangement provides and meets described required support force described at least one parts.

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 provides and meets described required support force described at least one parts 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 provide to described at least one parts the active force that applies equally position, size and Orientation according to the contactless bracing or strutting arrangement of occurrence control one that applies position, size and Orientation of described required support force 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 and provide to described at least one parts the active force that applies position, size and Orientation and meet described condition in described print procedure.

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

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 be arranged in a 3D printer with the form of hardware and/or software.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, the contactless bracing or strutting arrangement of control module control one provides to described at least one parts 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 are saved, and avoid 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 the 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.In the t1 moment, 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; In the t2 moment, 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 apply position, size and Orientation according to described required support force, control described electrifying device in described print procedure to the powering on of described at least one parts, and control described at least one pair of pole plate, in described print procedure, described at least one parts produced to the electric field force that meets described required support force.

Alternatively, control module 52 specifically for: at least apply position, size and Orientation according to described required support force, at the relative position of at least one parts described in described print procedure and each described ultrasonic transmitter, control the ultrasonic wave of described multiple ultrasonic transmitter transmittings and interfere formation that at least one focus beam of described active force is provided.

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 multiple passages around.Correspondingly, control module 52 at least, by controlling pressure and the ventilation direction of each described passage, is controlled described contactless bracing or strutting arrangement and provide to described at least one parts 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, generate the control instruction 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, according to contactless bracing or strutting arrangement described in described control instruction control.

Alternatively, described instruction generation unit before described print procedure starts, generate described control instruction and preserve, described control module after described print procedure starts according to contactless bracing or strutting arrangement described in described control instruction control.For instance, described control instruction can comprise: the function of upper electric position, power on polarity and the upper electric weight of described electrifying device to described at least one parts taking at least one parameter relevant with described print procedure as independent variable, and electric-field intensity, the function of direction of an electric field taking at least one parameter relevant with described print procedure as independent variable between described at least one pair of pole plate.

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 the required support force of at least one parts in described at least part of object 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 provide to described at least one parts the active force that applies equally position, size and Orientation according to the contactless bracing or strutting arrangement of occurrence control one that applies position, size and Orientation of described required support force, 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 and described at least one parts provided to the active force that applies position, size and Orientation and meet described condition.

Alternatively, control module 62 is controlled the active force that applies position described in contactless being supported on and towards described direction, described at least one parts are applied 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 be arranged in a 3D printer with the form of hardware and/or software.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 the required support force of at least one parts in described at least part of object, size and Orientation, the contactless bracing or strutting arrangement of control module control one provides 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 are saved, and avoid 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 the constraints such as equalising torque and stress balance, 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.In the t1 moment, 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; In the t2 moment, 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 apply position, size and Orientation according to described required support force, control described electrifying device to the powering on of described at least one parts, and control described at least one pair of pole plate described at least one parts are produced to the electric field force that meets described required support force.

Alternatively, control module 62 specifically for: at least apply position, size and Orientation according to described required support force, control upper electric position, power on polarity and the upper electric weight of described electrifying device to described at least one parts, and control electric-field intensity and direction of an electric field between described at least one pair of pole plate.

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 multiple passages around.Correspondingly, control module 62 at least, by controlling pressure and the ventilation direction of each described passage, 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 the optional implementation of one, 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 provide to described at least one parts 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 the required support force of at least one parts in described at least part of object applies 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 provide to described at least one parts the active force that meets described required support force.

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 the optional implementation of one, as shown in Figure 7 B, contactless bracing or strutting arrangement 72 comprises: for an electrifying device 721 of powering on to described at least one parts and at least one pair of pole plate 722 being arranged on around print area.It should be noted that, in figure, only illustrate with two pairs of pole plates 722, and do not mean that the restriction to pole plate logarithm in this implementation.

Further alternatively, described at least one pair of pole plate 722 is made up of at least one pair of conductive grid that is arranged on described print area opposite side.

In the optional implementation of another, contactless bracing or strutting arrangement 72 comprises: be arranged on described print area multiple 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 multiple passages of arranging by certain way.

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

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 provide to described at least one parts 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 the required support force of at least one parts in described at least part of object, 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 are saved, and avoid the impact of excision supporting construction on object outward appearance.

Those of ordinary skill in the art 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 realize described function with distinct methods to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.

If described function realizes and during as production marketing independently or use, can be stored in a computer read/write memory medium using the form of SFU software functional unit.Based on such understanding, 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 (can be personal computers in order to make a computer equipment, 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 an electrifying device of powering on to described at least one parts and at least one pair of pole plate being arranged on around print area.

5. method according to claim 4, it is characterized in that, describedly at least apply position, size and Orientation according to described required support force, 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 described print procedure, comprising:

6. method according to claim 5, it is characterized in that, describedly at least apply position, size and Orientation according to described required support force, control described electrifying device powering on to described at least one parts in described print procedure, and described in controlling, at least one pair of pole plate produces to described at least one parts the electric field force that meets described required support force in described print procedure, comprising:

7. according to arbitrary described method in claim 4～6, it is characterized in that, described electrifying device is thermionic emission device, and described electrifying device is negative to the polarity that powers on of described at least one parts.

8. according to arbitrary described method in claim 4～6, it is characterized in that, described electrifying device is ultraviolet lamp, described electrifying device to the polarity that powers on of described at least one parts for just.

9. according to arbitrary described method in claim 1～8, 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:

10. 3D prints a householder method, it is characterized in that, described method comprises:

11. methods according to claim 10, is characterized in that, described contactless bracing or strutting arrangement comprises: for an electrifying device of powering on to described at least one parts and at least one pair of pole plate being arranged on around print area.

12. methods according to claim 11, 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:

At least apply position, size and Orientation according to described required support force, control powering on of at least one parts described in described electrifying device, and control described at least one pair of pole plate described at least one parts are produced to the electric field force that meets described required support force.

13. methods according to claim 12, it is characterized in that, describedly at least apply position, size and Orientation according to described required support force, control powering on of at least one parts described in described electrifying device, and described in controlling, at least one pair of pole plate produces to described at least one parts the electric field force that meets described required support force, comprising:

14. according to arbitrary described method in claim 11～13, it is characterized in that, described electrifying device is thermionic emission device, and described electrifying device is negative to the polarity that powers on of described at least one parts.

15. according to arbitrary described method in claim 11～13, it is characterized in that, described electrifying device is ultraviolet lamp, described electrifying device to the polarity that powers on of described at least one parts for just.

16. according to arbitrary described method in claim 10～15, it is characterized in that, shape, the material of at least part of object having printed in described basis, determine the required support force of at least one parts in described at least part of object apply position, size and Orientation before, also comprise:

17. 1 kinds of 3D print servicing unit, it is characterized in that, described device comprises:

18. devices according to claim 17, is characterized in that, described printer model file comprises: the shape of described object, material, page order.

19. according to the device described in claim 17 or 18, it is characterized in that, apply position, size and/or the direction of described required support force change with described print procedure.

20. according to arbitrary described device in claim 17～19, it is characterized in that, described contactless bracing or strutting arrangement comprises: for an electrifying device of powering on to described at least one parts and at least one pair of pole plate being arranged on around print area.

21. devices according to claim 20, it is characterized in that, described control module specifically for: at least apply position, size and Orientation according to described required support force, control described electrifying device in described print procedure to the powering on of described at least one parts, and control described at least one pair of pole plate, in described print procedure, described at least one parts produced to the electric field force that meets described required support force.

22. devices according to claim 21, it is characterized in that, described control module specifically for: at least apply position, size and Orientation according to described required support force, control described the electrifying device upper electric position to described at least one parts, the polarity that powers on and upper electric weight in described print procedure, and control electric-field intensity and the direction of an electric field in described print procedure between described at least one pair of pole plate.

23. according to arbitrary described device in claim 20～22, it is characterized in that, described electrifying device is thermionic emission device, and described electrifying device is negative to the polarity that powers on of described at least one parts.

24. according to arbitrary described device in claim 20～22, it is characterized in that, described electrifying device is ultraviolet lamp, described electrifying device to the polarity that powers on of described at least one parts for just.

25. according to arbitrary described device in claim 17～24, 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.

26. 1 kinds of 3D print servicing unit, it is characterized in that, described device comprises:

27. devices according to claim 26, is characterized in that, described contactless bracing or strutting arrangement comprises: for an electrifying device of powering on to described at least one parts and at least one pair of pole plate being arranged on around print area.

28. devices according to claim 27, it is characterized in that, described control module specifically for: at least apply position, size and Orientation according to described required support force, control powering on of at least one parts described in described electrifying device, and control described at least one pair of pole plate described at least one parts are produced to the electric field force that meets described required support force.

29. devices according to claim 28, it is characterized in that, described control module specifically for: at least apply position, size and Orientation according to described required support force, control upper electric position, power on polarity and the upper electric weight of described electrifying device to described at least one parts, and control electric-field intensity and direction of an electric field between described at least one pair of pole plate.

30. according to arbitrary described device in claim 27～29, it is characterized in that, described electrifying device is thermionic emission device, and described electrifying device is negative to the polarity that powers on of described at least one parts.

31. according to arbitrary described device in claim 27～29, it is characterized in that, described electrifying device is ultraviolet lamp, described electrifying device to the polarity that powers on of described at least one parts for just.

32. according to arbitrary described device in claim 25～31, 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.

33. 1 kinds of 3D printers, is characterized in that, comprising: print servicing unit and described contactless bracing or strutting arrangement just like arbitrary described 3D in claim 17～32.