DE102016226022A1 - Process for producing a structural component, structural component and lever system - Google Patents

Abstract

A method for producing a structural component (1) is described, which comprises carrying out a generative production method. In this case, a base region (10) of the structural component (1) is constructed in a construction direction (B). Subsequently, a lattice-like support structure (30) with elementary units (35) which are repeated within the support structure (30) and each having the same external shape is formed. Finally, a build-up region (20) of the structural component (1) adjoining the support structure (30) in the construction direction (B) is formed. Furthermore, a structural component (1) and a lever system (100) with the structural component (1) are described.

Description

The present invention relates to a method for producing a structural component, a structural component and a lever system.

Structural components of various kinds, such as levers, carriers, containers, fuselage parts for vehicles or the like, are increasingly produced by generative manufacturing or manufacturing processes. Generative manufacturing processes offer exceptional design freedom and allow, among other things, to produce objects with a manageable effort, which would not be possible to produce with conventional methods or only with considerable effort. In generative or additive manufacturing processes, also commonly referred to as "3D printing process", starting from a digitized geometric model of an object, one or more modeling materials are sequentially stacked and cured in layers.

Due to the process support structures are necessary in a variety of additive or generative manufacturing processes. Such support structures are needed in particular for the formation of overhangs extending transversely to the construction direction, since conventional modeling materials such as powder or liquid do not fulfill the necessary support function.

Usually, the support structures are no longer needed after the production of the component. The EP 2 666 613 A1 therefore describes a support structure which can be easily removed after the manufacture of the component. However, a removal of the support structure after the production of the component is only possible if the support structure is spatially accessible.

It is therefore an object of the present invention to provide a method by which a component can be produced in an efficient manner and with low component weight.

This object is achieved in each case by the subject matters of the independent claims.

Advantageous embodiments and further developments will become apparent from the dependent claims to the independent claims in conjunction with the description.

According to a first aspect of the invention, a method for producing a structural component is provided, wherein the method comprises carrying out a generative production method. In a first method step, a base area of the structural component extending in a planar manner takes place in a mounting direction. Subsequently, a grid-like support structure is formed by constructing a plurality of support members in the mounting direction on the base portion. The structure of the support elements is such that the support elements form within the support structure repetitive elementary units, each having the same outer shape. Furthermore, a construction area of the component which adjoins the support structure in the construction direction is formed, wherein the building area extends over a flat area.

According to the invention, a generative or additive manufacturing process is thus carried out, in which first a planar, e.g. strip, plate or cup-shaped base region or a base layer is constructed in a construction direction of a modeling material. The base region is accordingly produced in the construction direction with a certain thickness. On the base layer or the base region, a grid-like support structure in the construction direction is formed from the modeling material. It is thus formed a extending in the body direction scaffold. In particular, a multiplicity of individual support elements are constructed by means of the generative production method, which are connected to one another and form the repetitive elementary units, each having the same external shape, within the support structure. Within the supporting structure, certain spatial structures which are limited by a plurality of supporting elements are repeated. The support elements may be formed in particular rod-shaped or arcuate or generally with an elongated extension. In particular, the support elements form edges of a respective elementary unit. Thus, the elementary units form open cells. This structure creates a support structure with low weight and high mechanical rigidity. Finally, based on the support structure, a planar building area is formed from the modeling material. The construction area and the base area thus overlap one another. By virtue of the production by means of a generative production method, the base region, the support structure and the construction region are formed in one piece.

The support structure remains after the manufacture of the component between the base region and the construction area. Due to the open-cell, grid-like design of the support structure, the structural component produced on the one hand only a small additional weight through the support structure. On the other hand, a grid-like structure has a high mechanical strength and thus improves the mechanical strength of the component as a whole. Furthermore, by the contribution of the support structure to the mechanical strength, the base area and the building area can be made smaller Wall thickness are performed, whereby the component weight is reduced.

According to an advantageous embodiment of the method can be provided in particular that are constructed to form the lattice-like support structure first support elements with a longitudinal extent in the body direction and second support elements with a deviating from the body direction longitudinal extent. Thus, elongated, e.g. rod-shaped or arc-shaped first support elements which extend approximately in the construction direction, and elongated, e.g. rod-shaped or arcuate second support elements which extend transversely or obliquely to the direction of construction constructed. This offers the advantage that the support structure is formed with a substantially direction-independent high mechanical load capacity.

In particular, it can be provided that a deviation from the construction direction of the second support elements is in a range between 0.1 mm and 5 mm. An illustration of a respective second support element, which results in a parallel projection of the respective support element in the direction of construction on a surface perpendicular to the construction direction, thus has a length in said region. In this area, a mechanically stable support structure is created with great freedom of design.

Preferably, the deviation from the construction direction of the second support elements is in a range between 1 mm and 4 mm. In this area, the support structure is produced particularly quickly and efficiently with high mechanical strength. In particular, the second support elements are reliably generated in this area of the deviation from the construction direction with high quality. In particular, a break or unwanted deformation of individual support elements during manufacture due to insufficient support by the modeling material is reliably prevented.

According to a further embodiment of the method it can be provided that the support elements are constructed such that the elementary units are formed as convex polyhedra. A polyhedron is called convex if, for every two points of the polyhedron, the connecting distance between these points lies completely inside the polyhedron. So that support structure is thus constructed as a regular grid, which reduces the production cost and whereby a simple structural design of the structural component is achieved.

The elementary units may accordingly have the outer shape of a polyhedron, for example as polyhedra in the form of a cuboid, a hexahedron, an octahedron, an octahedron, a tetrahedron, a double tetrahedron, a polygonal prism, a dodecahedron, an icosahedron, an icosidodecahedron or the like.

The generative production method may, in particular, include a selective laser sintering method, SLS method or SLM method, an electron beam melting method, EBM method for short, or a fused deposition modeling method, in short FDM method.

In the SLS process and in the SLM process, a component is built up layer by layer from the modeling material, for example a plastic (SLS process) or a metal (SLM process), by applying the modeling material in powder form to a substrate and targeted by local Laser irradiation is liquefied, resulting in a solid, coherent component after cooling. In the EBM method, instead of a laser beam, an electron beam is used as an energy source for irradiating the powdery modeling material.

In the FDM method, first, similar to a normal printer, a grid of dots is applied to a surface according to the component cross-section to be produced. The dots are produced by the liquefaction of a wireline modeling material by heating, application by extrusion through a die, and subsequent cure by cooling. The structure of a body is carried out by repeatedly, preferably line by line, traversed a working plane with the nozzle and then the working plane is shifted sequentially upwards, so that the body is formed in layers.

In principle, the modeling material may be selected from any materials or combinations of materials for which additive processes are known. In particular, a metal material, a plastic material, a composite material or a ceramic material may be used as the modeling material. In particular, steel alloys, titanium or titanium alloys, aluminum or aluminum alloys or similar metal materials come into question as the metal material. As the plastic material, in particular, a polyamide or an elastomer such as thermoplastic polyurethane can be used. In this context, composite material is to be understood as meaning, in particular, materials in which fiber material is embedded in a matrix material. These may be in particular fiber-reinforced plastics, such as, for example, carbon fiber-reinforced plastics, or carbon fibers reinforced silicon carbide. In particular, silicon carbide, Al ₂ O ₃ or the like may be used as the ceramic material.

According to a further aspect, a structural component is provided. The structural component may in particular be produced by a method according to one of the embodiments described above. Features and advantages described with reference to the method or the component thus also apply analogously to the respective other object.

The structural member has a planar-extending base portion and a planar-extending body portion disposed in a thickness direction spaced from the base portion. The base and the building area thus overlap each other or have facing surfaces. Furthermore, the structural component has a grid-like support structure extending between the base area and the building area, which has a multiplicity of support elements. The support elements form within the support structure repetitive elementary units each having the same outer shape. The base region, the body region and the support structure are integrally formed.

The structural component accordingly has a planar, e.g. strip-shaped, plate-shaped or cup-shaped base region and also a flat, e.g. strip, plate or bowl-shaped body region, wherein the base portion and the body portion are arranged opposite to each other in a thickness direction. With respect to the thickness direction between the base portion and the body portion, there is provided a support structure formed integrally with the base and body portions. The support structure is formed like a grid. Thus, there is provided a scaffold extending in the thickness direction, which extends between the base and the body region and mechanically connects them together. The support structure comprises a plurality of individual support elements which are interconnected and which form within the support structure repetitive elementary units each having the same outer shape. Within the supporting structure, certain spatial structures which are limited by a plurality of supporting elements are repeated. The support elements may be formed in particular rod-shaped or arcuate or generally with an elongated extension. In particular, the support elements form edges of a respective elementary unit. Thus, the elementary units form open cells. This structure creates a support structure with low weight and high mechanical rigidity. In particular, the described design of the component is advantageously suitable for manufacture by means of a generative manufacturing process, e.g. the method described above.

According to one embodiment of the component can be provided that the grid-like support structure is constructed by first support members having a longitudinal extent in the thickness direction and second support elements with a deviating from the body direction longitudinal extent. Thus, they are each oblong, e.g. rod or arcuate first and second support members provided. The first support elements extend approximately in the body direction or their longitudinal extent follows approximately the direction of construction. The second support elements extend transversely or obliquely to the direction of construction. As a result, truss structures can be constructed in a simple manner. This offers the advantage that the support structure is formed with a substantially direction-independent high mechanical load capacity.

In particular, it can be provided that a deviation from the construction direction of the second support elements is in a range between 0.1 mm and 5 mm. An illustration of a respective second support element, which results in a parallel projection of the respective support element in the direction of construction on a surface perpendicular to the construction direction, thus has a length in said region.

Preferably, the deviation from the construction direction of the second support elements is in a range between 1 mm and 4 mm. In this area, the support structure can be produced particularly quickly and efficiently with high mechanical strength by means of a generative manufacturing process, e.g. with the method described above.

According to a further embodiment, the support elements may be arranged such that the elementary units are formed as convex polyhedra. The elementary units accordingly have the outer shape of a polyhedron, for example as polyhedra in the form of a cuboid, a hexahedron, an octahedron, an octahedron, a tetrahedron, a double tetrahedron, a polygonal prism, a dodecahedron, an icosahedron, an icosidodecahedron or the like.

Another aspect of the invention relates to a lever system having at least one lever pivotally hinged to a base component, wherein the lever is formed by a structural component according to one of the embodiments described above. The lever system may in particular form a movement device for moving a component mounted on the lever. For example, the lever system may be provided as part of a landing gear of an aircraft, a positioning device for positioning a wing flap or the like. Also, the lever system may be provided as part of a kinematics of a robot.

The structural component forming the lever has, in particular, superstructure and base areas extending in a longitudinal direction. The structural component is thus designed in particular as an elongate component.

With respect to direction indications and axes, in particular to directions and axes which relate to the course of physical structures, herein is understood to mean a course of an axis, a direction or a structure "along" another axis, direction or structure, that these, in particular the tangents resulting in a respective position of the structures each extend at an angle of less than or equal to 45 degrees, preferably less than 30 degrees, and in particular preferably parallel to one another.

With respect to directional indications and axes, and in particular to directional data and axes concerning the course of physical structures, herein a progression of an axis, a direction or a structure is understood to be "transverse" to another axis, direction or structure, that In particular, the tangents resulting in a respective position of the structures each extend at an angle of greater than or equal to 45 degrees, preferably greater than or equal to 60 degrees, and particularly preferably perpendicular to one another.

As used herein, "integral," "one-piece," "integral," or "one-piece" components generally mean that these components are present and in particular manufactured as a single part forming a material unit, one of which other component can not be detached from the other without releasing material cohesion.

Generative or additive manufacturing methods - also referred to as 3D printing method - in the context of the present application include all manufacturing processes in which on the basis of geometric models objects predefined form of informal materials such as liquids and powders or shape-neutral semi-finished products such as ribbon or wire-shaped material be prepared by chemical and / or physical processes in a special generative manufacturing system. In the context of the present application, 3D printing processes use additive processes in which the starting material is built up sequentially in layers in predetermined forms.

• 1 eine schematische Darstellung eines Verfahrens gemäß einem Ausführungsbeispiel der vorliegenden Erfindung während der Durchführung eines ersten Verfahrensschritts;
• 2 eine schematische Darstellung des Verfahrens während der Durchführung eines weiteren Verfahrensschritts;
• 3 eine schematische Darstellung des Verfahrens nach Abschluss des in 2 dargestellten Verfahrensschritts;
• 4 eine schematische Darstellung des Verfahrens während der Durchführung eines weiteren Verfahrensschritts;
• 5 eine schematische Ansicht einer 3D-Druckvorrichtung zur Durchführung des Verfahrens;
• 6 eine perspektivische Ansicht eines Strukturbauteils gemäß einem Ausführungsbeispiel der vorliegenden Erfindung;
• 7 eine perspektivische Ansicht eines Strukturbauteils gemäß einem Ausführungsbeispiel der vorliegenden Erfindung;
• 8 eine schematische Darstellung eines Hebelsystems gemäß einem Ausführungsbeispiel der vorliegenden Erfindung;
• 9 eine schematische Darstellung eines Industrieroboters mit Hebelsystems gemäß einem weiteren Ausführungsbeispiel der vorliegenden Erfindung; und
• 10 eine schematische Darstellung eines Luftfahrzeugs mit Hebelsystems gemäß einem weiteren Ausführungsbeispiel der vorliegenden Erfindung.

In the following the invention will be explained with reference to the figures of the drawings. From the figures show:

• 1 a schematic representation of a method according to an embodiment of the present invention during the implementation of a first method step;
• 2 a schematic representation of the method during the implementation of a further method step;
• 3 a schematic representation of the method after completion of in 2 illustrated method step;
• 4 a schematic representation of the method during the implementation of a further method step;
• 5 a schematic view of a 3D printing device for performing the method;
• 6 a perspective view of a structural component according to an embodiment of the present invention;
• 7 a perspective view of a structural component according to an embodiment of the present invention;
• 8th a schematic representation of a lever system according to an embodiment of the present invention;
• 9 a schematic representation of an industrial robot with lever system according to another embodiment of the present invention; and
• 10 a schematic representation of an aircraft with lever system according to another embodiment of the present invention.

In the figures, the same reference numerals designate the same or functionally identical components, unless indicated otherwise.

In 1 is a schematic and purely by way of example a sectional view of a working chamber 3 a 3-D printing device 2 shown in the form of an open cavity. The working chamber 3 has a work platform 4 which is exemplified as being formed through the bottom of the cavity. The basic design and operation of the 3-D printing device 2 will be described in more detail below with reference to 5 explained.

1 shows by way of example the implementation of a first method step of a method for producing a structural component 1 , The method comprises, in particular, the implementation of a generative production method, for example a selective laser sintering method, an electron beam melting method or a fused deposition modeling method. In the first Method step is by means of generative manufacturing a flat extending base area 10 of the structural component 1 in a construction direction B from a modeling material M built up. In 1 is the base area 10 exemplified as a flat layer, in the direction of construction B layer by layer of modeling material M with a thickness t10 was generated. The base area 10 In particular, it has a surface extension transverse to the construction direction B on and continues to extend in a direction transverse to the mounting direction longitudinal direction L10. In the 1 to 4 as in 7 is the base area 10 of the structural component 1 exemplified as a plate-shaped, planar layer. This in 5 exemplified structural component 1 on the other hand has a curved, in particular arc-shaped base region 10 on.

The 2 and 3 show a further step of the process. In this case, a grid-like support structure is formed 30 , Here are the formation of the support structure 30 by means of the generative method, a plurality of support elements 31 . 32 in the construction direction B on the base area 10 built up. This is done in such a way that the support elements 31 . 32 within the support structure 30 repeating elementary units 35 each with the same outer shape. In the 2 and 3 are the support elements 31 . 32 symbolically represented as straight chopsticks. In 2 is the structure of the support structure 30 not finished yet. 3 shows the completely constructed support structure 30 with their final extension in the direction of construction B , The structure of the individual support elements 31 . 32 takes place in layers along the construction direction B , This principle is from a comparison of 2 and 3 recognizable.

As from the symbolic representation of 2 to 4 as well as from the 6 and 7 can be seen, the support elements 31 . 32 each formed as elongated components. For example, as in the 2 to 5 as in 7 shown symbolically, rod-shaped support elements 31 . 32 be formed. 6 shows exemplary support elements 31 . 32 which are formed as slightly curved, elongated elements.

To form the grid-like support structure 30 may be provided in particular that first support elements 31 and second support elements 32 being constructed. As in particular in the 2 . 6 and 7 is shown, the first support elements 31 with a longitudinal extent in or along the direction of construction B and the second support elements 32 with one of the body direction B a deviation d32 Deviating longitudinal extension constructed. The first and second support elements 31 . 32 thus run diagonally to each other. This creates a branched support structure 30 generates, thereby increasing the mechanical stability of the support structure 30 is improved. The deviation d32 from the construction direction B the second support elements 32 may in particular be in a range between 0.1 mm and 5 mm, preferably in a range between 1 mm and 4 mm.

The deviation d31 can in particular be determined by the length of an image of a respective second support element 32 be defined, which in a parallel projection of the respective support element 32 in the direction of construction B on a perpendicular to the body direction B standing surface yields.

The support elements 31 . 32 are constructed such that they are within the support structure 30 repeating elementary units 35 each with the same outer shape. In 2 is exemplified a first row of itself along the longitudinal direction L10 of the base portion 10 repeating elementary units 35 shown symbolically as pentagons and in relation to the construction direction B immediately on the base area 10 are formed. In the direction of construction B Following this first row is in 2 by way of example a further row along a longitudinal direction L10 of the base region 10 repeating elementary units 35 shown symbolically as diamonds. In 3 is another in the construction direction B adjoining along a longitudinal direction L10 of the base region 10 repeating elementary units 35 shown symbolically as diamonds. In general, it can be provided that the support elements 31 . 32 be constructed such that the elementary units 35 be formed as convex polyhedra. Here are the support elements 31 . 32 each edges of the respective polyhedron.

In 4 schematically a final step of the process is shown. In this case, a formation takes place in the body direction B to the support structure 30 subsequent construction area 20 of the structural component 1 , As in the 4 . 6 and 7 is shown, the construction area 20 also a surface extension transverse to the body direction B and extends along the longitudinal direction L10. Furthermore, the construction area overlaps 20 with respect to the longitudinal direction L10 with the base member 10 , especially in the 4 and 7 is shown. In 4 is the construction area 20 exemplified as a flat layer, in the direction of construction B layer by layer of modeling material M was produced with a thickness t20. The construction area 20 In particular, it has a surface extension transverse to the construction direction B on. In the 4 and 7 is the construction area 20 of the structural component 1 exemplified as a plate-shaped, planar layer. This in 5 shown by way of example structural component 1 on the other hand has a curved construction area 20 on.

For carrying out the additive manufacturing process for the production of the structural component 1 becomes the modeling material M supplied to a 3D printing device 2, as in 5 is shown. For this purpose, the modeling material M for example, in powder form. Basically, the present invention provides a variety of options, the modeling material M to liquefy, in which heat targeted locally stored in modeling material M can be initiated. In particular, the use of lasers and / or particle beams, for example electron beams, is advantageous, since in this case heat can be generated in a very targeted and controlled manner. Thus, the generative manufacturing process may be selected, for example, from the group of selective laser sintering, selective laser melting, selective electron beam sintering, and selective electron beam melting, or the like. In principle, however, any additive method can be used. In the following, the method is explained by way of example in connection with selective laser melting (SLM), in which the modeling material M in powder form on a work platform 4 is applied and is specifically liquefied by local laser irradiation with a laser beam 5, whereby, after cooling, a coherent structural component 1 results.

An energy source in the form of a laser 5A For example, a Nd: YAG laser sends a laser beam 5 location-selective to a particular part of a powder surface of the powdered modeling material M which is in a working chamber 3 on a work platform 4 rests. For this purpose, an optical deflection device or a scanner module such as a movable or tiltable mirror 5B be provided, which the laser beam 5 depending on its tilted position on a specific part of the powder surface of the modeling material M distracting. At the point of impact of the laser beam 5 becomes the modeling material M heated, so that the powder particles are locally melted and form an agglomerate on cooling. Depending on a by a computing device, eg in the form of a personal computer 6 , provided digital model of the structural component 1 , the laser beam is scanning 5 the powder surface off. After selective melting and local agglomeration of the powder particles in the surface layer of the modeling material M can excess, not agglomerated modeling material M to be singled out. Then the work platform becomes 4 by means of a lowering piston 7 lowered (see arrow in 5 ) and with the help of a powder feed 8th or other suitable means new modeling material M transferred from a reservoir into the working chamber 3. The modeling material M can accelerate the melting process by infrared light to just below the melting temperature of the modeling material M preheated working temperature lying. In this way, a three-dimensional sintered or "printed" structural component is created in an iterative generative construction process 1 from agglomerated modeling material M , The surrounding powdered modeling material M can in the support of the previously built up part of the structural component 1 serve. Through the continuous downward movement of the work platform 4 the structural component arises 1 in layered model generation, starting with the base area 10 , following the support structure 30 and finally with the construction area 20 ,

The 6 and 7 each show exemplary designs of the structural component 1 , At the in 6 exemplified structural component 1 is the base area 10 as an arcuate extending narrow plate extending along a longitudinal direction L10. The one to the base area 10 in a thickness direction T spaced construction area 20 overlaps with the base area 10 , The thickness direction T corresponds to the body direction B , The construction area 20 is formed as a narrow plate with a stepped, arcuate course. In particular, the construction area has a first longitudinal section 20A on, extending along a section of the base area 10 extends, with which the first longitudinal section 20A overlaps. With respect to the longitudinal direction L10, the first longitudinal section closes 20A a step portion 20B which extends transversely to the first longitudinal portion 20B and with increasing distance to the base region 10 along the longitudinal direction L10. With respect to a longitudinal direction L10, the step portion 20B is adjoined by an arc portion 20C which is arcuate with the distance becoming smaller along the longitudinal direction L10 from the base portion 10 runs. At opposite ends with respect to the longitudinal direction L10 1A . 1B of the structural component 1 can each have a functional area 41 . 42 be provided, for example, as in 6 shown in the form of cylindrical sleeves, each defining transverse to the longitudinal direction L10 extending recesses. The recesses may be provided, for example, as a bearing receptacles or the like.

The support structure 30 of in 6 shown structural component 1 is by slightly curved extending, elongated support elements 31 . 32 educated. These form in particular in one with respect to the thickness direction T middle range 30A along the longitudinal direction L10 within the support structure 30 repeating elementary units 35 each with the same external shape in shape. The base area 10 , the construction area 20 and the support structure 30 are integrally formed, for example by means of the manufacturing method described above.

In 7 is an exemplary design of the structural component 1 shown at which the base area 10 and the construction area 20 completely overlap each other and in the thickness direction T spaced apart from each other. The construction area 20 and the base area 10 are each designed as approximately rectangular plates. Between the base area 10 and the construction area 20 is the support structure 30 arranged. The base area 10 , the construction area 20 and the support structure 30 are integrally formed, for example by means of the manufacturing method described above. For the design of the support structure 30 becomes to the above remarks too 6 and to the 2 to 4 directed.

In 7 is an example of a structural component 1 shown, which has an optional wall area 50 having. This extends along the thickness direction T between the base area 10 and the construction area 20 , In particular, the wall area connects 50 a border area 10A of the base area 10 with a border area 20A of the construction area 20 , Such a wall area 50 can also in the in 6 shown embodiment of the structural component 1 be provided. Generally, several wall areas 50 be provided so that through the wall areas 50 , the base area 10 and the construction area 20 a closed cavity is formed, in which the support structure 30 is trained. The wall area 50 may in particular be integral with the base area 10 and the construction area 20 be formed and, for example by means of a generative manufacturing process simultaneously with the support structure 30 in the construction direction B be built on the base area.

The 6 and 7 thus generally show a structural component 1 with a flat base area 10 , with a planar-extending body region 20, in a thickness direction T spaced to the base area 10 is arranged and with a between the base area 10 and the construction area 20 extending grid-like support structure 30 in that a plurality of support elements 31, 32 is constructed. As in the 6 and 7 shown by way of example form the support elements 31 . 32 within the support structure 30 repeating elementary units 35 each with the same outer shape. The base area 10 , the construction area 20 and the support structure 30 are integrally formed. The thickness direction T corresponds to the body direction B along which the base region 10, the support structure 30 , the construction area 20 and optionally the optional wall area 50 be formed.

The 8th schematically shows a lever system 100 with at least one rotatable to a base component 101 hinged lever 102 , The lever 102 is thereby by the structural component 1 , eg by the in 6 shown structural component 1 educated. In the 8th schematically illustrated base component 101 For example, another structural component 1 be according to one of the design variants described above.

9 shows an exemplary application of the lever system 100 on an industrial robot 103 , Diejeweils as a structural component 1 executed lever 101 form motion arms of the industrial robot 103 ,

In 10 is an aircraft 104 shown, its chassis 105 one lever system each 100 according to the schematic representation of 8th exhibit. It can be used as a structural component 1 executed lever 101 in particular a support for a wheel of the aircraft 104 form. The structural component 1 can, for example, as in 6 be shown represented. The base part 101 For example, by one in the fuselage of the aircraft 104 fastened support structure (not shown) may be formed.

Although the present invention has been exemplified above by means of embodiments, it is not limited thereto, but modifiable in many ways. In particular, combinations of the preceding embodiments are conceivable.

LIST OF REFERENCE NUMBERS

1

structural component

1A, 1B

Ends of the structural component

2

3-D printing apparatus

3

working chamber

4

work platform

5

laser beam

5A

laser

5B

mirror

6

PC

7

lowering slider

8th

powder feed

10

base region

10A

Edge area of the base area

20

construction area

20A

Edge area of the construction area

30

support structure

30A

middle area

31

first support elements

32

second support elements

35

elementary units

41.42

functional area

50

wall region

100

lever system

101

basic component

102

lever

103

industrial robots

104

aircraft

105

landing gear

B

build direction

d32

deviation

T

thickness direction

t10

Thickness of the base layer

M

modeling

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 2666613 A1 [0004]

Claims (10)

Method for producing a structural component (1), comprising carrying out a generative production method comprising the following steps: Constructing a planarly extending base region (10) of the structural component (1) in a construction direction (B); Forming a lattice-like support structure (30) by constructing a plurality of support elements (31; 32) in the construction direction (B) on the base region (10) such that the support elements (31; 32) within the support structure (30) are repeating elementary units (31). 35) each having the same outer shape; and Forming a build-up area (20) of the structural component (1) which adjoins the support structure (30) in the construction direction (B), wherein the build-up area (20) extends in a planar manner. Method according to Claim 1 , wherein for forming the lattice-like support structure (30) first support elements (31) with a longitudinal extent in the construction direction (B) and second support elements (32) are constructed with a different from the mounting direction (B) longitudinal extent. Method according to Claim 2 wherein a deviation (d32) from the mounting direction (B) of the second support members (32) is in a range between 0.1 mm and 5 mm. Method according to one of the preceding claims, wherein the support elements (31; 32) are constructed such that the elementary units (35) are formed as convex polyhedra. Method according to one of the preceding claims, wherein the generative manufacturing method comprises a selective laser sintering method, an electron beam melting method or a fused deposition modeling method. Structural component (1) with a flat base portion (10); a planar-extending body portion (20) disposed in a thickness direction (T) spaced from the base portion (10); and a grid-like support structure (30) extending between the base portion (10) and the body portion (20) and constructed with a plurality of support members (31; 32); wherein the support members (31; 32) within the support structure (30) form repeating elementary units (35) each having the same outer shape; and wherein the base portion (10), the body portion (20) and the support structure (30) are integrally formed. Structural component (1) according to Claim 6 wherein the grid-like support structure (20) is constructed by first support elements (31) with a longitudinal extent in the thickness direction (T) and second support elements (32) with a longitudinal extent deviating from the construction direction. Structural component (1) according to Claim 7 wherein the deviation (d32) from the mounting direction (B) of the second support members (32) is in a range between 0.1 mm and 5 mm. Structural component (1) according to one of Claims 6 to 8th wherein the support members (31; 32) are arranged such that the elementary units (35) are formed as convex polyhedra. A lever system (100) having at least one lever (102) pivoted to a base component (101), wherein the lever (102) is moved by a structural component (1) according to one of the FIGS Claims 6 to 9 is trained.

Images