CN214649108U - Lightweight metal unit structure and metal component - Google Patents

Abstract

The application is a light-weight metal unit structure and a metal component, belonging to the light-weight metal field, comprising an upper substrate and a lower substrate, wherein the lower substrate and the upper substrate are respectively in a closed polygonal structure, the plane where the upper substrate is located and the plane where the lower substrate is located are arranged in parallel at intervals, and the diameters of circumscribed circles of the upper substrate and the lower substrate are different; the connecting ribs are connected between the upper substrate and the lower substrate and are arranged at intervals along one circle of the upper substrate and one circle of the lower substrate respectively; the whole body of the metal material is made to present a hollow metal structure through the scheme, so that the light weight of the metal material is improved; simultaneously, this application still sets up the size of upper substrate and infrabasal plate into not equidimension, cooperation splice bar for whole metal unit structure forms the structure of many prismatic tables of fretwork, and the splice bar of two relative positions can form the structure similar to triangle-shaped between upper substrate and infrabasal plate, when receiving great extrusion force, can bear higher anti extrusion strength.

Description

Lightweight metal unit structure and metal component

Technical Field

The utility model relates to a metal structure makes the field, especially relates to a lightweight metal unit structure and metal component.

Background

The metal powder injection molding technology is a new powder metallurgy near-net shape molding technology formed by introducing the modern plastic injection molding technology into the powder metallurgy field. The injection molding process is to mix solid powder and organic adhesive, to be pelletized, to be injected into mold cavity by injection molding machine in heating and plasticizing state to be solidified and molded, to be decomposed by chemical or thermal decomposition, to be sintered and densified to obtain the final product. The lightweight metal is a final product formed by injection molding and sintering, most of the existing lightweight metals formed by powder injection molding are honeycomb-shaped metal structures, the honeycomb-shaped metal structures have poor extrusion resistance, surface or internal defects easily appear in the honeycomb-shaped metal structures, and cracking easily occurs when the lightweight metals are extruded with high strength.

SUMMERY OF THE UTILITY MODEL

This application is generally mostly honeycomb in order to solve current lightweight metal structure, however, honeycomb metal structure anti extrusion ability is relatively poor, and surface or internal defect appear in its inside easily, the problem of fracture takes place easily when receiving the extrusion of great intensity, and this application designs a lightweight metal unit structure and metal component, and the technical scheme of its concrete adoption is:

a lightweight metal unit structure is manufactured by adopting metal injection molding or metal compression molding and other processes, and specifically comprises the following steps:

an upper substrate;

the device comprises a lower substrate, a lower substrate and an upper substrate, wherein the lower substrate and the upper substrate are respectively of a closed polygonal structure, a plane where the upper substrate is located and a plane where the lower substrate is located are arranged in parallel at intervals, and the diameters of circumscribed circles or inscribed circles of the upper substrate and the lower substrate are different;

and each connecting rib is connected between the upper substrate and the lower substrate, and the plurality of connecting ribs are arranged at intervals along one circle of the upper substrate and one circle of the lower substrate respectively.

Preferably, each of the connection ribs is connected to a corresponding corner position of the upper substrate and the lower substrate.

Preferably, a line connecting the geometric center of the upper substrate and the geometric center of the lower substrate is vertical to the upper substrate and the lower substrate.

Preferably, the diameter of the circumscribed circle or the inscribed circle of the upper substrate is larger than that of the circumscribed circle or the inscribed circle of the lower substrate, the upper substrate is a hollow plate provided with a through hole, and the lower substrate is an invar solid plate.

Preferably, the diameter of the circumscribed circle or the inscribed circle of the upper substrate is 2 times the diameter of the circumscribed circle or the inscribed circle of the lower substrate.

Preferably, the cross-sectional area of the end of the connecting rib connected to the upper substrate is larger than the cross-sectional area of the end of the connecting rib connected to the lower substrate.

Preferably, the cross-sectional shape of the connecting rib is triangular.

Preferably, the lower substrate is a polygonal frustum structure, and the surface size of the lower substrate close to the upper substrate is larger than the surface size of the lower substrate far from the upper substrate.

The application also protects an injection-molded lightweight metal component, which comprises a plurality of lightweight metal unit structures, wherein the lightweight metal unit structures are sequentially connected and continuously extend along the four sides of the plane where the upper substrate or the lower substrate is located.

Preferably, the method further comprises the following steps:

the upper plate is arranged on the upper substrate and is parallel to the upper substrate;

and the lower plate is arranged on the lower substrate and is parallel to the lower substrate.

The utility model discloses a set up the splice bar and set up along its circumference interval between last base plate and infrabasal plate, make it present the metal construction of fretwork wholly, improve the lightweight of metal material; simultaneously, this application still sets up the size of upper substrate and infrabasal plate into not equidimension, the cooperation splice bar, make whole metal unit structure form the structure of many prismatic tables of fretwork, and the splice bar of two relative positions can form the structure similar to triangle-shaped between upper substrate and infrabasal plate, when receiving great extrusion force, can bear higher anti extrusion strength, generally speaking, this kind of metal structure of shape strengthens this metal structure's intensity on the lightweight basis of improvement material, be adapted to the higher mechanical field of required strength or space flight field etc. more.

Drawings

FIG. 1 is a perspective view of a lightweight metal unit structure;

FIG. 2 is a perspective view of another perspective of a lightweight metal unit structure;

fig. 3 is a schematic structural view of a lightweight metal member.

In the figure, 1, an upper substrate, 2, a lower substrate, 3, a connecting rib, 4, an upper plate, 5 and a lower plate.

Detailed Description

In order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments with reference to the accompanying drawings.

In addition, in the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate orientations and positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

As shown in fig. 1 to 3, the present application is a lightweight metal unit structure and a metal member, which are manufactured by using a metal injection molding process or a metal compression molding process, wherein the injection molded lightweight metal unit structure includes an upper substrate 1, a lower substrate 2, and a connecting rib 3.

The upper substrate 1 and the lower substrate 2 are respectively in a closed polygonal structure, and in the present embodiment, the upper substrate 1 and the lower substrate 2 are in a regular hexagonal structure; the plane of the upper substrate 1 and the plane of the lower substrate 2 are arranged in parallel at intervals, and meanwhile, the diameters of circumscribed circles or inscribed circles of the upper substrate 1 and the lower substrate 2 are different from those of a metal honeycomb structure, the metal honeycomb structure is different from a metal honeycomb structure, the honeycomb metal comprises a large number of through holes, and the through hole-shaped honeycomb structure is low in connection strength and low in extrusion resistance strength. Moreover, the splice bar 3 is a plurality of, and a plurality of splice bars 3 set up along 1 a week of upper substrate and 2 a week intervals of infrabasal plate for form the hexagonal frustum of prism structure of fretwork between splice bar 3, upper substrate 1 and the infrabasal plate 2, thereby improve the lightweight of metal material. In addition, the size of the upper substrate 1 and the lower substrate 2 is different, so that the oppositely positioned connecting ribs 3 can form a structure similar to a triangle between the upper substrate 1 and the lower substrate 2, and can bear higher anti-extrusion strength when being subjected to a larger extrusion force in the direction from the lower substrate 2 to the upper substrate 1 or from the upper substrate 1 to the lower substrate 2. In the actual stress process, the stress direction is also the direction from the lower substrate 2 to the upper substrate 1. Generally, the metal structure with the shape enhances the strength of the metal structure on the basis of improving the light weight of the material, and is more suitable for the mechanical field or the aerospace field with higher required strength.

However, in some embodiments, the upper substrate 1 and the lower substrate 2 may also be triangular, quadrangular, pentagonal, heptagonal, and the like.

Further, the connecting ribs 3 are respectively connected to the corresponding corner positions of the upper substrate 1 and the lower substrate 2, because the corners are prone to stress concentration and cracks during the metal injection molding process, the connecting ribs 3 can bear the main extrusion force, and the upper substrate 1 and the lower substrate 2 are prevented from being damaged too quickly.

Furthermore, in order to further improve the strength of the lightweight metal structure, a connecting line between the geometric center of the upper substrate 1 and the geometric center of the lower substrate 2 is perpendicular to the upper substrate 1 and the lower substrate 2, so that the direction of the extrusion force and the direction of the connecting rib 3 can be ensured to be on the same straight line, and the anti-extrusion force capability of the lightweight metal structure is improved.

Further, to the difference of the diameter of the circumscribed circle or the inscribed circle of above-mentioned base plate and infrabasal plate 2, it is specific that the circumscribed circle or the inscribed circle diameter of upper plate 1 is greater than the circumscribed circle or the inscribed circle diameter of infrabasal plate 2, and upper plate 1 is the fretwork board that is equipped with the through-hole on it simultaneously, and this fretwork board then can guarantee this metal structure's lightweight effect, and secondly, this metal structure is when receiving the extrusion force, and the anti extrusion ability of splice bar 3 is strong to the mechanical properties of this metal structure has been improved. In addition, the lower substrate 2 is an invar solid plate because the lower substrate 2 itself has a smaller size than the upper substrate 1, and is configured as a solid plate in order to satisfy its structural strength.

Further, in the present embodiment, the dimensions of the upper substrate 1 and the lower substrate 2 are set such that the diameter of the circumscribed circle or the inscribed circle of the upper substrate 1 is 2 times the diameter of the circumscribed circle or the inscribed circle of the lower substrate 2, which determines the inclination angle of the connecting rib 3 in the vertical direction, so that the difference between the inclination angle of the connecting rib 3 which is too small and the straight through hole of the honeycomb structure is not small, thereby reducing the anti-extrusion strength of the light metal.

Further, for make splice bar 3 be adapted to size of a dimension between upper substrate 1 and the infrabasal plate 2 more, the cross sectional area that splice bar 3 connects in the one end of upper substrate 1 is greater than the cross sectional area that splice bar 3 connects in the one end of infrabasal plate 2, can guarantee like this that splice bar 3 can not all occupy 2 whole circumference length of infrabasal plate, keeps having the space between splice bar 3 and the splice bar 3, forms hollow out construction.

Further, in order to improve the strength of the connecting rib 3, the cross-sectional shape of the connecting rib 3 is set to be a triangular shape, because the connecting rib 3 mainly bears external force when actually stressed, and the triangular connecting rib 3 can bear the action of larger force.

Furthermore, the lower substrate 2 is a polygonal prism structure, and the surface size of the lower substrate 2 close to the upper substrate 1 is larger than the surface size of the lower substrate 2 far from the upper substrate 1, i.e. when injecting the light metal structure, the difficulty of drawing the mold is reduced when injecting the light metal structure.

However, in addition to the above, the present application also provides an injection-molded lightweight metal member including a plurality of lightweight metal unit structures as described above, which are continuously extended along four sides of the plane of the upper substrate 1 or the lower substrate 2 by injection molding and sintering processes to form a metal plate structure or a metal rod that can be used for aerospace and the like where high strength and lightweight are required.

Furthermore, an upper plate 4 is further arranged on the surface of the upper substrate 1, a lower plate 5 is further arranged on the surface of the lower substrate 2, the upper plate 4 and the lower plate 5 are used as a protective layer and a stress action surface, the phenomenon that an internal metal structure is directly exposed outside and is easy to damage is avoided, and meanwhile, the upper plate 4, the lower plate 5 and the internal metal structure form an integral lightweight metal plate or metal rod or lightweight metal components in other shapes, so that the lightweight metal components can be used in the aerospace field.

When the metal plate or the metal rod is manufactured, the lightweight metal unit structure can be arranged into a plurality of layers, and the multilayer structure is connected into a whole through a sintering process, so that the metal plate or the metal rod with different thickness or height requirements is met.

The above-mentioned specific embodiments can not be regarded as the restriction to the scope of protection of the utility model, to technical personnel in this technical field, it is right the utility model discloses any replacement improvement or transform that embodiment made all fall within the scope of protection of the utility model.

The parts of the present invention not described in detail are the known techniques of those skilled in the art.

Claims (10)

1. A lightweight metal unit structure, comprising:

an upper substrate;

the lower substrate and the upper substrate are respectively of a closed polygonal structure, the plane of the upper substrate and the plane of the lower substrate are arranged in parallel at intervals, and the diameters of circumscribed circles or inscribed circles of the upper substrate and the lower substrate are different;

the connecting ribs are connected between the upper substrate and the lower substrate and are arranged along one circle of the upper substrate and one circle of the lower substrate at intervals.

2. The light-weight metal cell structure of claim 1, wherein each of the connecting ribs is connected to a corresponding corner position of the upper substrate and the lower substrate.

3. The light-weight metal cell structure of claim 1 or 2, wherein a line connecting the geometric center of the upper substrate and the geometric center of the lower substrate is perpendicular to the upper substrate and the lower substrate.

4. The lightweight metal cell structure of claim 1, wherein the circumscribed or inscribed circle diameter of said upper substrate is greater than the circumscribed or inscribed circle diameter of said lower substrate, said upper substrate is a hollowed-out plate with through holes formed thereon, and said lower substrate is an invar plate.

5. The light-weight metal cell structure of claim 4, wherein the diameter of the circumscribed circle or inscribed circle of the upper substrate is 2 times the diameter of the circumscribed circle or inscribed circle of the lower substrate.

6. The light-weight metal unit structure of claim 4, wherein a cross-sectional area of an end of the connection rib connected to the upper substrate is larger than a cross-sectional area of an end of the connection rib connected to the lower substrate.

7. The light-weight metal unit structure according to claim 1 or 6, wherein the cross-sectional shape of the connecting rib is triangular.

8. The light-weight metal unit structure of claim 4, wherein the lower substrate is a polygonal frustum structure, and the surface dimension of the lower substrate close to the upper substrate is larger than the surface dimension of the lower substrate far from the upper substrate.

9. A lightweight metal member comprising the lightweight metal cell structure according to any one of claims 1 to 4, wherein a plurality of lightweight metal cell structures are provided, and the plurality of lightweight metal cell structures are connected in series and extend continuously around a plane in which the upper substrate or the lower substrate is located.

10. The light-weight metal member according to claim 9, further comprising:

the upper plate is arranged on the upper substrate and is parallel to the upper substrate;

and the lower plate is arranged on the lower substrate and is parallel to the lower substrate.

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