Box-like frame structure formed by composite plates and metal frames, and production method

Abstract

A box-like frame structure formed by composite plates and metal frames, and a production method therefor. In the box-like frame structure, a surface structure consists of composite structural plates (1), and an edge structure consists of metal frames (3); and a reinforcing rib structure (2) consisting of composite structural plates (1) is further provided inside the box-like frame structure. Each metal frame (3) is used for connecting two adjacent composite structural plates (1), side surfaces of each metal frame (3) extend to form mounting grooves, and the mounting grooves respectively clamp two sides of the composite structural plates (1). An adhesive storage groove (6) and adhesive injection holes (5) are formed on a bonding area between each metal frame (3) and a corresponding composite structural plate (1), and a structural adhesive (4) is injected into the adhesive storage groove (6) by means of the adhesive injection holes (5) to form a uniform adhesive layer. The edge structure of the box uses the metal frames (3), which mainly undergo thermal expansion deformation in the length direction of the box and undergo very little deformation in the other two directions, so that unpredictable torsional deformation of the entire box-like structure will not be caused, thereby improving the precision stability of the overall structure.

Description

Box body frame structure composed of composite material plate and metal frame and production method TECHNICAL FIELD

[0001] The present application relates to the technical field of machine tool structure, in particular to a box body frame structure composed of a composite material plate and a metal frame and a production method. BACKGROUND

[0002] With the continuous progress of science and technology, the precision stability and processing efficiency of machine tool equipment are increasingly required. Traditional machine tool structure is usually made of steel, aluminum and other metal parts by welding or casting. However, the high thermal expansion coefficient and weight of metal materials restrict the improvement of the precision stability and processing efficiency of machine tool equipment. Using composite materials to replace metal materials to make machine tool structure becomes a feasible technical approach. Compared with traditional metal machine tool structure, the weight of composite material structure is significantly reduced under the condition of meeting the same strength and stiffness requirements. According to the different components, the weight can be reduced by 10%-60% by using composite materials instead of metal. At the same time, the excellent chemical stability and small thermal expansion coefficient of the composite material can also make the structure obtain higher precision stability.

[0003] However, composite materials are usually anisotropic, and only have good mechanical properties in certain specific directions. Using a single composite material to make a structure not only has high cost and complex manufacturing process, but also cannot guarantee that the structure has good mechanical properties in all directions. Therefore, composite materials and metal materials are usually combined to manufacture a structure, and metal materials are used to make up for the weak mechanical properties of composite materials in some directions. However, the thermal expansion coefficients of composite materials and metal materials are very different. When the environmental temperature changes, the inconsistent deformation of composite materials and metal materials will cause a large stress at the connecting structure, which will cause the connecting structure to twist and deform, thereby changing the precision of the entire structure.

[0004] SUMMARY

[0005] In view of the above problems existing in the prior art, the present application provides a box body frame structure composed of a composite material plate and a metal frame. On the other hand, a production method for producing the box body frame structure is also provided.

[0006] The specific technical solutions are as follows:

[0007] A box body frame structure composed of a composite material plate and a metal frame, the surface structure of the box body frame structure is composed of a composite material structure plate, the edge structure of the box body frame structure is composed of a metal frame, and a reinforcing rib structure is arranged in the box body frame structure, the reinforcing rib structure is composed of the composite material structure plate.

[0008] The metal frame is used for connecting two adjacent composite material structure plates, the side of the metal frame is provided with a mounting groove, and the mounting groove clamps two surfaces of the composite material structure plate respectively

[0009] The metal frame is provided with a glue storage groove and a glue injection hole in the bonding area of the metal frame and the composite material structure plate, and a uniform glue layer is formed by injecting structural glue into the glue storage groove through the glue injection hole.

[0010] In another aspect, the reinforcing rib structure includes longitudinal reinforcing ribs and diagonal reinforcing ribs;

[0011] The longitudinal reinforcing ribs are distributed in the box body frame structure along the long axis direction according to a first preset interval and are respectively vertically connected and fixed with the surface structure plates at corresponding positions;

[0012] The diagonal reinforcing ribs are arranged between an adjacent pair of the longitudinal reinforcing ribs, the diagonal reinforcing ribs are diagonally fixed and connected at edges of the longitudinal reinforcing ribs and are vertically connected and fixed with the surface structure plates at corresponding positions;

[0013] The diagonal line directions of an adjacent pair of the diagonal reinforcing ribs are different.

[0014] In another aspect, the composite material structure plate includes a first panel, an intermediate layer and a second panel, the first panel and the second panel are fiber materials, and the intermediate layer is a honeycomb material;

[0015] A metal embedded part is arranged at a predetermined position of the intermediate layer;

[0016] The first panel, the second panel and the intermediate layer are connected into an integral whole by structural glue.

[0017] In another aspect, the fiber material is a carbon fiber-resin composite material;

[0018] The carbon fiber-resin composite material includes a plurality of layers of carbon fiber cloth and resin material bonded between the carbon fiber cloth;

[0019] The anti-thermal expansion rate of the plurality of layers of carbon fiber cloth is the same as the thermal expansion rate of the resin material.

[0020] In another aspect, the honeycomb material is a metal material, and the honeycomb holes of the honeycomb material are arranged perpendicularly to the first panel and the second panel;

[0021] The first panel and the second panel are reversely thermally expanded, and the thermal expansion rate of the composite material structure plate in the thickness direction is zero.

[0022] In another aspect, the predetermined position is a position of the composite material structure plate that bears external load;

[0023] The first panel and the second panel are provided with mounting holes in regions corresponding to the predetermined positions, and positioning devices of an external structure are fixedly connected with the metal embedded parts via the mounting holes penetrating through the first panel and the second panel.

[0024] The external structure comprises the metal frame and equipment guide rails.

[0025] In another aspect, the metal frame has an L-shaped cross section, and the mounting slots comprise first mounting slots and second mounting slots.

[0026] The first mounting slots and the second mounting slots are vertically arranged.

[0027] In another aspect, the metal frame comprises:

[0028] a main frame in the shape of a long cuboid, the main frame being provided with first mounting slots and second mounting slots on a first side and a second side thereof respectively;

[0029] The side of the main frame is further connected with external devices.

[0030] In another aspect, the metal frame is arranged at a convex corner formed by two adjacent composite material structure plates.

[0031] Alternatively, the metal frame is arranged at a concave corner formed by two adjacent composite material structure plates.

[0032] Alternatively, when the composite material structure plates are overlapped in a T shape, the metal frame is arranged in the included angles on the two sides of the composite material structure plates respectively.

[0033] A production method of a box frame structure, for producing the box frame structure as described above, the production method comprising:

[0034] The composite material structure plate and the bonding position of the metal frame are uniformly coated with structural adhesive, and then inserted into the predetermined mounting position in the metal frame to obtain a predetermined box frame structure.

[0035] The glue injection holes on the metal frame are respectively injected with structural adhesive until the structural adhesive overflows the glue injection holes to ensure that the structural adhesive forms a uniform glue layer in the glue storage groove.

[0036] The above technical solution has the following advantages or beneficial effects:

[0037] 1. The box-type structure is adopted, with the surface structure of the box made of composite material structural panels. This maximizes the excellent rigidity and strength of the composite material structural panels in the surface direction, while the composite material has minimal thermal deformation, ensuring the thermal stability of the surface structure. The rib structure of the box uses a metal frame. The metal frame mainly expands and deforms along the length of the box, while the deformation in the other two directions is very small. This prevents unpredictable torsional deformation of the entire box structure and improves the overall structural precision and stability.

[0038] 2. The connection between the composite material structural panel and the metal frame adopts double-sided adhesive, which strengthens the rigidity and strength of the connection while ensuring that the thermal expansion of the metal is symmetrical with respect to the composite material structural panel. The thermal expansion of the metal frame will not affect the geometric position of the composite material structural panel, thus preventing thermal deformation of the composite material structural panel and ensuring the accuracy and stability of the overall box frame structure.

[0039] 3. Composite material structural panels are easy to manufacture. They can be mass-produced using artificial resin transfer molding (RTM) technology or compression molding methods. Metal frame structures can also be easily obtained using extrusion, welding, and other methods. Compared with frame structures made of a single composite material, they are easier to manufacture. Attached Figure Description

[0040] Embodiments of the invention will be described more fully with reference to the accompanying drawings. However, the drawings are for illustration and explanation only and do not constitute a limitation on the scope of the invention.

[0041] Figure 1 is an overall schematic diagram of an embodiment of the present invention;

[0042] Figure 2 is a partial schematic diagram of an embodiment of the present invention;

[0043] Figure 3 is a schematic diagram of the composite material structure plate according to an embodiment of the present invention;

[0044] Figure 4 is a schematic diagram of the reinforcing rib structure according to an embodiment of the present invention;

[0045] Figure 5 is a schematic diagram of the connection portion according to an embodiment of the present invention;

[0046] Figure 6 is a schematic diagram of the main frame of an embodiment of the present invention;

[0047] Figure 7 is a schematic diagram of the production method according to an embodiment of the present invention; Detailed Implementation

[0048] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present application.

[0049] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0050] In the present application, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection", "fixation" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection; it can be mechanical connection; it can be direct connection, or indirect connection through intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0051] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0052] The present application will be further described below in combination with the drawings and specific embodiments, but not as a limitation of the present application.

[0053] The present application comprises:

[0054] A box frame structure, as shown in FIG. 1 and FIG. 2, the surface structure of the box frame structure is composed of a composite material structure plate 1, the edge structure of the box frame structure is composed of a metal frame 3, a reinforcing rib structure 2 is arranged in the box frame structure, and the reinforcing rib structure is composed of a composite material structure plate 1 or a composite material reinforcing plate;

[0055] The metal frame 3 is used for connecting two adjacent composite material structure plates 1, the side surface of the metal frame 3 protrudes with a mounting groove, and the mounting groove clamps two surfaces of the composite material structure plate 1 respectively.

[0056] When the metal frame 3 and the composite material structure plate 1 are combined, the structural glue 4 is injected into the glue storage groove 6 through the glue injection hole 5, and the structural glue 4 is uniformly distributed in the contact area of the metal frame 3 and the composite material structure plate 1 through the glue storage groove 6 and is solidified.

[0057] Specifically, for the problem that the similar structure is affected by temperature and the connecting structure is distorted and deformed, resulting in poor structural precision stability, caused by the inconsistent thermal expansion coefficients of the composite material and the metal parts in the prior art, in the scheme, the composite material structure plate is double-sided contact when connected with the metal frame, and is a symmetric structure along the thickness direction of the composite material structure plate. Therefore, when the material temperature changes, the position of the composite material structure plate relative to the metal frame remains unchanged because the expansion of the structural glue and the metal material along the thickness direction of the composite material structure plate is symmetrical, so that the surface structure of the entire box frame is not affected by temperature changes, and the precision stability of the overall frame structure is greatly improved.

[0058] Specifically, as shown in FIG. 1, the composite material structure plate 1 in the scheme includes a composite material structure plate 1-a, a composite material structure plate 1-b, a composite material structure plate 1-c, and a composite material structure plate 1-d, which enclose a long hollow square tubular structure, which is used as a column, a rod, and the like when the frame structure is subsequently manufactured.

[0059] And at the corner parts of the adjacent composite material structure plates 1, such as the corners of the composite material structure plate 1-b and the composite material structure plate 1-c, a metal frame 3-c is arranged, which is used to wrap and connect the corners formed by the composite material structure plate 1-b and the composite material structure plate 1-c.

[0060] Correspondingly, a metal frame 3-a is arranged between the composite material structure plate 1-a and the composite material structure plate 1-d, a metal frame 3-b is arranged between the composite material structure plate 1-b and the composite material structure plate 1-a, and a metal frame 3-d is arranged between the composite material structure plate 1-c and the composite material structure plate 1-d.

[0061] Considering that the traditional mechanical connection method often needs to be connected after being holed, and the holed part is easy to cause stress concentration and affect the strength, in the embodiment, the metal frame 3 and the composite material structure plate 1 are fixed by adhesive, avoiding the stress damage problem caused by holed.

[0062] However, in the gluing process, the traditional way of applying structural glue to the surface of the workpiece and closing the workpiece is prone to cause the structural glue to flow and be uneven, thereby causing the bonding strength to decrease. To solve this problem, multiple glue injection holes 5 are distributed on the metal frame 3 in this embodiment, and a glue storage groove 6 is designed on the side close to the composite material structure plate 1. When the structural glue 4 is injected into the glue storage groove 6 through the glue injection hole 5, the structural glue 4 is uniformly distributed in the contact area between the metal frame 3 and the composite material structure plate 1 through the glue storage groove 6, and then solidified to form a uniform glue layer.

[0063] The glue storage groove 6 is used to refer to the gap formed between the metal frame 3 and the composite material structure plate 1, and the structural glue 4 flows into the glue storage groove 6 through the glue injection hole 5 and is distributed in the glue storage groove 6 to form a glue layer. By controlling the combination of the depth of the glue storage groove 6 and the type and glue injection pressure of the structural glue 4, a relatively uniform glue layer can be formed in the glue storage groove 6 to achieve firm connection.

[0064] Further, the glue storage groove 6 can also be a shape with a specific distribution formed by processing the surface of the metal frame 3. For example, in one embodiment, the glue injection holes 5 are uniformly distributed along the long axis direction of the metal frame 3 according to a specific interval, and the back surface is designed with tree-shaped distribution of glue storage grooves 6 communicating with the glue injection holes 5; when the structural glue 4 is injected into the glue storage groove 6, the structural glue 4 uniformly spreads to the interface along the branches of the tree under the action of pressure, forming a uniformly distributed glue layer, thereby achieving better bonding effect. According to different embodiments, the glue storage groove 6 can also be in a matrix, snowflake, or net distribution form.

[0065] The structural glue 4 is a liquid or semi-liquid adhesive used to fix the metal frame 3 and the composite material structure plate 1, which can be structural glue, epoxy resin glue, or other equivalent adhesives, which can be naturally cured at room temperature or cured after baking.

[0066] The metal frame 3 is a metal structure with corners that can fix and stress the composite material structure plate 1, and its cross section is C-shaped, L-shaped, or other angles. It should be noted that it can be installed on the outer corner of the composite material structure plate 1-a and the composite material structure plate 1-d, or it can be attached to the inner corner of the composite material structure plate 1-a and the composite material structure plate 1-d; according to the different attachment positions, the glue storage groove 6 will be adjusted to different surfaces to face the composite material structure plate 1.

[0067] In one embodiment, the box body frame structure further includes multiple reinforcing rib structures 2;

[0068] The reinforcing rib structure 2 includes a longitudinal reinforcing rib 2-a and an inclined reinforcing rib 2-b;

[0069] The longitudinal reinforcing ribs 2-a are arranged in the box frame structure according to a first preset interval along the long axis direction, and are respectively fixed perpendicularly to the composite material structure plate 1 as the surface structure plate.

[0070] The diagonal reinforcing ribs 2-b are fixed respectively to the edges of the longitudinal reinforcing ribs 2-a in a diagonal direction between an adjacent pair of longitudinal reinforcing ribs 2-a.

[0071] The directions of the adjacent pair of diagonal reinforcing ribs 2-b are different, and the longitudinal reinforcing ribs 2-a and the diagonal reinforcing ribs 2-b are fixed to the composite material structure plate 1 through the metal frame 3.

[0072] The diagonal reinforcing ribs 2-b are fixed respectively to the edges of the longitudinal reinforcing ribs 2-a in a diagonal direction and are fixed perpendicularly to the composite material structure plate 1 as the surface structure plate in the corresponding position.

[0073] Specifically, in order to achieve better structural strength, a plurality of reinforcing rib structures 2 are arranged in the box frame structure in the embodiment, including the longitudinal reinforcing ribs 2-a and the diagonal reinforcing ribs 2-b to reinforce the internal structure.

[0074] The longitudinal reinforcing ribs 2-a are arranged in the box frame structure according to a first preset interval along the long axis direction, and the edges are arranged perpendicularly to the composite material structure plate 1. Then, the corners formed by the edges of the longitudinal reinforcing ribs 2-a and the connecting parts of the composite material structure plate 1 are provided with corresponding metal frames 3, and the glue injection and curing processes are performed according to the above-mentioned process, so that a better mechanical conduction structure is achieved, which can better disperse the stress in the short axis direction and improve the bending resistance of the overall structure.

[0075] Specifically, in the frame structure shown in FIG. 1, the metal frames 3 for fixing the longitudinal reinforcing ribs 2-a include metal frames 3-e and metal frames 3-f.

[0076] Then, in order to achieve better compression resistance of the tubular structure, the diagonal reinforcing ribs 2-b are arranged in a diagonal direction between an adjacent pair of longitudinal reinforcing ribs 2-a in the embodiment, so as to improve the compression resistance of the frame structure by conducting the longitudinal reinforcing ribs 2-a. The upper and lower ends of the diagonal reinforcing ribs 2-b are connected to the longitudinal reinforcing ribs 2-a, and the two ends of the side surface are respectively connected to the composite material structure plate 1. Similarly, the edge parts are wrapped and fixed by glue injection through the metal frames 3, including the metal frames 3-h and the metal frames 3-g.

[0077] In one embodiment, the reinforcing rib structure 2 is a carbon fiber panel.

[0078] In one embodiment, the composite material structure plate 1 and the reinforcing rib structure 2 are the same composite material structure plate 1.

[0079] The three-layer structure plate comprises a first panel and a second panel arranged in an upper and lower manner, and at least one intermediate layer arranged between the first panel and the second panel.

[0080] The first panel, the second panel and the intermediate layer are adhesively fixed.

[0081] Specifically, in order to achieve better replacement of traditional metal materials, in the embodiment, the composite material structure plate 1 is improved. As shown in FIG. 3, the composite material structure plate 1 is sequentially provided with a first panel, a second panel and an intermediate layer from top to bottom. In one embodiment, the first panel and the second panel are fiber materials, and the intermediate layer is an aluminum honeycomb plate. Then the composite material structure plate 1 is composed of a carbon fiber panel 101, an aluminum honeycomb plate 103 as a sandwich layer, and a carbon fiber panel 104.

[0082] The layers are connected into one body by adhesion, and the adhesion mode includes room temperature curing by applying structural glue or baking curing.

[0083] Further, in order to achieve better reinforcement effect, a pair of pre-buried parts 102 and 104 are also embedded in the part close to the corner of the composite material structure plate 1 in the subsequent assembly process, so as to improve the local mechanical properties of the plate.

[0084] In other embodiments, the position of the pre-buried part will also change, for example, when the guide rail is arranged on the composite material structure plate 1 of one side of the box body frame structure, one or more pre-buried parts can be arranged on the composite material structure plate 1 corresponding to the area of the guide rail, and the direction of the pre-buried part is parallel or intersected with the guide rail.

[0085] When the composite material structure plate 1 is fixedly connected with the external guide rail, the predetermined position is arranged on the guide rail connection position;

[0086] The guide rail mounting part of the external guide rail penetrates into the pre-buried part and is fixed.

[0087] In such embodiments, since the composite material structure plate 1 itself is a composite material, if the connection position with the guide rail is fixed by using bolts and the like, a large shear force is easily generated at this position, which in turn destroys the structure of the fiber material. In this regard, a pre-buried part can be pre-penetrated into the intermediate layer and an installation hole can be formed at the predetermined position where the external guide rail is to be installed. Then, when the external guide rail is installed, the guide rail mounting part of the external guide rail penetrates into the pre-buried part and is fixed, thereby avoiding damage to the fiber material on the panel.

[0088] Similarly, as shown in FIG. 4, in order to achieve better structural reinforcement, a carbon fiber panel 201, an aluminum honeycomb plate 202 as a sandwich layer and a carbon fiber panel 203 can also be sequentially arranged in the reinforcing rib structure 2.

[0089] In one embodiment, the fiber material is a carbon fiber-resin composite material.

[0090] The carbon fiber-resin composite material comprises a plurality of carbon fiber cloths and resin materials bonded between the carbon fiber cloths.

[0091] The thermal expansion rate of the plurality of carbon fiber cloths is the same as the thermal expansion rate of the resin material.

[0092] Specifically, to achieve the control of the thermal expansion of the composite material structure plate 1, the fiber material in this embodiment is adjusted to be a plurality of carbon fiber cloths of a specific number of layers and resin materials impregnated in the carbon fiber cloths. Since the carbon fiber cloth itself has a reverse thermal expansion characteristic, by selecting the number of layers and the direction of the carbon fiber cloth and adjusting the proportion of the resin material in the overall fiber plate, the thermal expansion rate of the plurality of carbon fiber cloths is the same as the thermal expansion rate of the resin material, and the thermal expansion rate of the overall fiber material is 0, thereby improving the thermal stability of the structure.

[0093] In one embodiment, the honeycomb material is a metal material, and the honeycomb holes of the honeycomb material are arranged perpendicular to the first panel and the second panel.

[0094] The first panel and the second panel are reversely thermally expanded, and the thermal expansion rate of the composite material structure plate in the thickness direction is zero.

[0095] Specifically, to achieve better thermal stability of the composite material as a whole, the structure of the honeycomb material in this embodiment is further arranged such that the honeycomb holes are arranged perpendicular to the first panel and the second panel, and the proportion of the resin material is controlled such that the first panel and the second panel themselves have a reverse thermal expansion characteristic. The thermal stability of the frame is achieved by the tensile force of the fiber plate to offset the expansion of the honeycomb material in the height direction.

[0096] In one embodiment, the metal frame 3 comprises a first plane and a second plane arranged on the outer side and respectively adhered to the composite material structure plate 1, and a column of first mounting holes 7 is respectively arranged on the first plane and the second plane;

[0097] The glue injection hole 7 is closer to the corner of the metal structural member than the first mounting hole 7;

[0098] A second mounting hole is arranged on the composite material structure plate 1 corresponding to the position of the first mounting hole;

[0099] When the composite material structure plate 1 is combined with the metal frame 3, the first mounting hole and the second mounting hole are connected.

[0100] Specifically, to achieve a better installation effect, in the embodiment, a row of first installation holes 7 are formed on the first plane and the second plane of the metal frame 3, and second installation holes are formed on the composite material structure plate 1 corresponding to the positions of the first installation holes.

[0101] When the composite material structure plate 1 and the metal frame 3 need to be combined, the first installation holes 7 and the second installation holes are first matched, and then the composite material structure plate 1 and the metal frame 3 are connected, and then the glue injection, curing treatment is performed.

[0102] Through the above setting, the composite material structure plate 1 and the metal frame 3 can be accurately positioned, and the positioning device can exert a pre-pressure on the two, which is convenient for the uniform formation of the glue layer.

[0103] In the above process, since the first installation hole 7 is closer to the outer side of the metal frame 3 than the glue injection hole 7, the positioning device can exert a certain pressure on the edge outer side after installation, which is convenient for the structural glue in the glue storage groove to bond the composite material structure plate 1 and the metal frame 3.

[0104] Correspondingly, when the reinforcing rib structure 2 is combined with the metal frame 3, the first installation hole and the second installation hole are also connected through the positioning device, and then the glue is injected and fixed.

[0105] Specifically, during installation, based on the above design, the metal structure has the following installation methods:

[0106] The metal frame 3 is arranged on the external corner formed by the adjacent two composite material structure plates 1;

[0107] Alternatively, the metal frame 3 is arranged on the internal corner formed by the adjacent two composite material structure plates 1;

[0108] Alternatively, the metal frame 3 is arranged on the internal corner formed by the adjacent two composite material structure plates 1;

[0109] Alternatively, when the composite material structure plate 1 is T-shaped lap joint, the metal frame 3 is arranged in the included angle on both sides of the composite material structure plate 1.

[0110] Through the above setting, a better installation effect can be achieved.

[0111] In one embodiment, as shown in FIG. 5, when the adjacent two composite material structure plates 1 form a corner, the L-shaped metal frame 3 is clamped on the internal corner and the external corner on the inner side of the composite material structure plate 1, respectively, and the first installation slot and the second installation slot clamp the two surfaces of each composite material structure plate 1, respectively.

[0112] The middle of the metal frame 3 is also provided with a connecting part 31, which passes through the gap between the adjacent composite material structure plates 1 to connect the metal frames 3 on the inner and outer sides, respectively.

[0113] Specifically, to achieve better structural strength, in this embodiment, for the case of forming a corner of the composite material structure plate 1, a pair of metal frames 3 is arranged on the inner and outer sides of the corner of the composite material structure plate 1, respectively, to achieve fixed connection on both sides. In this embodiment, to further improve the structural strength, the connecting part 31 can be arranged between the gaps between the adjacent composite material structure plates 1 to connect the metal frames 3 on the inner and outer sides.

[0114] In one embodiment, the metal frame 3 can be formed by pouring, aluminum extrusion, etc. to form the first and second mounting grooves at one time.

[0115] In one embodiment, as shown in FIG. 6, the metal frame 3 includes:

[0116] A main frame 32 in the shape of a long cuboid;

[0117] At least one mounting groove 33, including a first mounting groove and a second mounting groove. The mounting groove 33 is arranged on the side of the main frame, and the mounting groove is in the shape of a U. The mounting groove 33 is used to fix the composite material structure plate;

[0118] The embodiment shown in the figure is two mounting grooves 33, which can also be arranged on multiple sides as needed.

[0119] In the mounting groove, a first mounting hole, a glue groove and a glue injection hole are arranged at the corresponding position, which are used to access the positioning device and glue injection fixing.

[0120] Specifically, to achieve better connection strength, in this embodiment, a main frame 32 in the shape of a long cuboid is also arranged in the metal frame 3, which is made of metal material, and a U-shaped mounting groove 33 is arranged on both sides. When installed, the composite material structure plate 1 is inserted into the mounting groove 33 and fixed by glue injection through the glue injection hole, and fixed by the positioning device penetrating the embedded part.

[0121] On this basis, the main frame 32 can also be connected to the external guide rail.

[0122] A production method of a box frame structure for producing the above-mentioned box frame structure, as shown in FIG. 7, the production method includes:

[0123] The composite material structure plate and the bonding position of the metal frame are uniformly coated with structural glue, and then inserted into the predetermined mounting position in the metal frame to obtain a predetermined box frame.

[0124] Respectively, the glue injection hole on the metal frame is injected with structural glue until the structural glue overflows the glue injection hole to ensure that the structural glue forms a uniform glue layer in the glue storage groove.

[0125] Specifically, to achieve better production efficiency, the production method described above is also designed for producing the box body frame structure in the embodiment.

[0126] Specifically, according to the parameters of the box body frame structure to be designed in advance, mainly including the specification size of length and width, the corresponding length of the composite material structure plate and the metal structural part can be selected; when the reinforcing rib structure needs to be set, the corresponding reinforcing rib structure size can also be easily designed.

[0127] Based on the size data, the composite material structure plate, the metal structural part and the reinforcing rib structure are cut, and then the composite material structure plate is inserted into the predetermined mounting position in the metal structural part to combine into the frame to be bonded that meets the design requirements.

[0128] Subsequently, the glue injection hole of the metal structural part is injected with structural glue and filled with the glue storage groove of the metal structural part, and a specific pressure can be maintained during the injection process, and a vacuum environment can also be set according to needs to exclude air in the glue storage groove, so that the structural glue is uniformly distributed in the glue storage groove, and the air bubbles in the glue layer are reduced.

[0129] Finally, the structural glue is cured to form the box body frame structure, and the curing method can be normal temperature curing or baking curing, which is adjusted according to different structural glues.

[0130] In one embodiment, the production method further comprises fixing the composite material structure plate using a positioning device after the composite material structure plate is inserted into the predetermined mounting position.

[0131] Correspondingly, to achieve better installation accuracy, the second mounting screw hole on the composite material structure plate and the first mounting screw hole on the metal structural part are matched after the composite material structure plate is inserted into the predetermined mounting position in the embodiment, and then a positioning device is used for fixing, and then the fixing is performed through the glue injection and curing method, so that better fixing effect is achieved.

[0132] Specifically, in existing part of machine tools, machining centers and other equipment, in order to realize the machining of workpieces, machining devices such as main shafts and milling cutters are usually arranged above the machining table; at the same time, in order to realize the machining of workpieces with larger area, gantry form can be used to hoist the machining device to facilitate the movement of the machining device during the machining process.

[0133] Generally speaking, in order to achieve lighter mass and higher load, the gantry structure adopts a plurality of rod-shaped components to form a corresponding frame structure, such as the common spreader structure in cranes and factories, which is divided into longitudinal beams, transverse beams and diagonal beams according to different functions. Among them, the rod-shaped components can be replaced by the box body frame structure described above to replace the existing metal material transverse rod, thereby achieving a lower overall weight.

[0134] The above merely describes the preferred embodiments of the present application, and is not intended to limit the embodiments and protection scope of the present application. It should be noted by those skilled in the art that any equivalent replacements and obvious changes made according to the content of the present application should be included in the protection scope of the present application.

Claims

1. A box frame structure composed of a composite material panel and a metal frame, characterized by, The face structure of the box body frame structure is composed of composite material structure plates, the edge structure of the box body frame structure is composed of a metal frame, and a reinforcing rib structure is arranged in the box body frame structure and is composed of the composite material structure plates; The metal frame is used for connecting two adjacent composite material structure plates, and a mounting groove is protruded from the side surface of the metal frame to clamp two surfaces of the composite material structure plate respectively; A glue storage groove and a glue injection hole are arranged on the bonding area of the metal frame and the composite material structure plate, and a uniform glue layer is formed by injecting structural glue into the glue storage groove through the glue injection hole.

2. The cassette frame structure of claim 1, wherein The reinforcing rib structure includes longitudinal reinforcing ribs and diagonal reinforcing ribs; The longitudinal reinforcing ribs are distributed in the box body frame structure along the long axis direction according to a first preset interval and are vertically connected and fixed with the face structure plates at corresponding positions respectively; The diagonal reinforcing ribs are arranged between an adjacent pair of longitudinal reinforcing ribs, are fixed and connected at the edges of the longitudinal reinforcing ribs in a diagonal line respectively and are vertically connected and fixed with the face structure plates at corresponding positions; The diagonal lines of an adjacent pair of diagonal reinforcing ribs are arranged in different directions.

3. The cassette frame structure of claim 1, wherein The composite material structure plate includes a first panel, an intermediate layer and a second panel, the first panel and the second panel are fiber materials, and the intermediate layer is a honeycomb material; A metal embedded part is arranged at a predetermined position of the intermediate layer; The first panel, the second panel and the intermediate layer are connected into an integrated whole by structural glue.

4. The cassette frame structure of claim 3, wherein The fiber material is a carbon fiber-resin composite material; The carbon fiber-resin composite material includes multiple layers of carbon fiber cloth and resin material bonded between the carbon fiber cloth; The anti-thermal expansion rate of the multiple layers of carbon fiber cloth is the same as the thermal expansion rate of the resin material.

5. The cassette frame structure of claim 3, wherein The honeycomb material is a metal material, and the honeycomb holes of the honeycomb material are arranged perpendicularly to the first panel and the second panel; The first panel and the second panel are reversely thermally expanded, and the thermal expansion rate of the composite material structure plate in the thickness direction is zero.

6. The cassette frame structure of claim 3, wherein The predetermined position is a position of the composite material structure plate that bears external load; The first panel and the second panel are provided with mounting holes in regions corresponding to the predetermined position, and a positioning device of an external structure is fixedly connected with the metal embedded part by penetrating the first panel and the second panel through the mounting holes; The external structure includes the metal frame and an equipment guide rail.

7. The box frame structure of claim 1, wherein The cross section of the metal frame is L-shaped, and the mounting groove includes a first mounting groove and a second mounting groove; The first mounting groove and the second mounting groove are arranged perpendicularly.

8. The box frame structure of claim 1, wherein, The metal frame includes: A main frame, which is in the shape of a long cuboid, is provided with a first mounting groove and a second mounting groove on a first side surface and a second side surface respectively; The side surface of the main frame is further connected with an external device.

9. The box frame structure of claim 1, wherein, The metal frame is arranged on a convex corner formed by two adjacent composite material structure plates; Alternatively, the metal frame is arranged on a concave corner formed by two adjacent composite material structure plates. Or, when the composite material structure plate is in T-shaped lap joint, the metal frame is arranged in the included angle on both sides of the composite material structure plate respectively.

10. A method of producing a box frame structure, characterized by, The production method for producing the box frame structure as claimed in claim 1 comprises: The composite material structure plate and the metal frame are uniformly coated with structural adhesive at the bonding position, and then inserted into the predetermined mounting position in the metal frame to obtain the predetermined box frame structure. The injection hole of the metal frame is injected with structural adhesive until the structural adhesive overflows the injection hole, so that the structural adhesive forms a uniform adhesive layer in the glue storage groove.

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