A vertical machining center gantry of composite reinforcement structure

Abstract

The utility model provides a kind of vertical machining center portal frame of composite reinforcing structure, including machining center main body and portal frame, wherein portal frame structure is further subdivided into crossbeam, column and connecting seat, and crossbeam is provided with bearing plate inside;It further includes sealing plate, steel sleeve and hydraulic telescopic rod, steel sleeve is embedded in the upper and lower end of crossbeam and bearing plate and is fixed through, carbon fiber bundle is fixed in steel sleeve, and the outer end telescopic part of hydraulic telescopic rod is provided with connecting plate, and the inner side of connecting plate is provided with stretch column, and the inner side of stretch column is further provided with traction disc, carbon fiber bundle is embedded and fixed to the side end of traction disc, while the both sides of crossbeam are horizontally fixed with limit tube, and traction disc is connected in limit tube inner wall with activity adhering.The utility model passes through steel sleeve and is transmitted to crossbeam and bearing plate, forms reverse bending stress, effectively offsets the normal stress caused by processing load, so that the overall or local deformation possibly generated in the machining process of portal frame is inhibited.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool technology, and in particular to a vertical machining center gantry with a composite reinforced structure. Background Technology

[0002] As a core piece of equipment in modern manufacturing, the rigidity and stability of the gantry structure of a vertical machining center directly affect its machining accuracy.

[0003] Traditional gantry cranes often employ single castings or welded structures. However, these structures rely primarily on their inherent rigidity to passively bear loads, without actively applying reverse bending stress through prestressing tendons or cables. This results in significant deformation under machining loads, affecting tool tip positioning accuracy and machining quality. Even when some gantry cranes attempt to mitigate deformation through localized reinforcement or counterweights, the lack of a systematic prestressing design often leads to uneven prestress distribution, making it difficult to create an effective reverse bending stress field. This results in localized deformation under loads, further exacerbating the overall structural deformation. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the existing technology. This utility model proposes a vertical machining center gantry with a composite reinforced structure.

[0005] To address the aforementioned issues, traditional gantry cranes often employ single castings or welded structures. However, these structures rely primarily on their inherent rigidity to passively bear loads, failing to actively apply reverse bending stress through prestressing tendons or cables. This leads to significant deformation under machining loads, affecting tool tip positioning accuracy and machining quality. Even when some gantry cranes attempt to mitigate deformation through localized reinforcement or counterweights, the lack of a systematic prestressing design results in uneven prestress distribution, hindering the formation of an effective reverse bending stress field. This leads to localized deformation under loads, further exacerbating overall structural deformation. The technical solution adopted in this invention is: A vertical machining center gantry with a composite reinforced structure includes a machining center body and a gantry frame, wherein the gantry frame structure is further subdivided into crossbeams, columns and connecting seats, and a load-bearing plate is provided inside the crossbeams; It also includes a sealing plate, a steel sleeve, and a hydraulic telescopic rod. The steel sleeve passes through and is fixedly embedded in the upper and lower ends of the crossbeam and the bearing plate. Carbon fiber bundles are fixed inside the steel sleeve. A connecting plate is provided on the telescopic part of the outer end of the hydraulic telescopic rod. A tension column is provided on the inner side of the connecting plate. A traction disc is provided on the inner side of the tension column. The carbon fiber bundles are embedded and fixed to the side end of the traction disc. Limiting tubes are fixed horizontally on both sides of the crossbeam. The traction disc is movably connected to the inner wall of the limiting tube.

[0006] Preferably, the crossbeam adopts a rectangular hollow design, and there are several load-bearing plates, which are symmetrically distributed inside the crossbeam.

[0007] Preferably, the column adopts an I-shaped cross-section design, and a weight-reducing groove is provided on the outer side of the column.

[0008] Preferably, the inner wall of the weight-reducing groove is welded with honeycomb-shaped ribs, and the number of ribs is several, which are symmetrically distributed from top to bottom from the inner wall of the weight-reducing groove.

[0009] Preferably, the columns are fixedly installed on both sides of the upper end of the machining center body, while the crossbeam and the columns are fixedly connected by connecting seats and bolts.

[0010] Preferably, the sealing plate is fixedly installed on the rear side of the crossbeam, and the multiple steel sleeves are grouped together, with two groups of steel sleeves horizontally and symmetrically distributed at the upper and lower ends of the crossbeam and the bearing plate, respectively.

[0011] Preferably, the hydraulic telescopic rods are installed through and fixedly on both sides of the crossbeam, and there are two hydraulic telescopic rods, which are symmetrically distributed at the upper and lower ends of both sides of the crossbeam, and each hydraulic telescopic rod is equipped with a hydraulic control cylinder.

[0012] Preferably, laser rangefinders are also fixedly installed on both sides of the outer end of the crossbeam.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This invention utilizes synchronous control to open the hydraulic telescopic rod, causing the connecting plate to move outwards, which in turn drives the tension column and traction disc to move linearly outwards along the inner wall of the limiting tube. During this process, the carbon fiber bundle is stretched, causing the hydraulic telescopic rod to apply a preload to the carbon fiber bundle sequentially. This preload is transmitted to the crossbeam and bearing plate through the steel sleeve, forming a reverse bending stress that effectively counteracts the normal stress caused by the processing load, thereby suppressing the overall or local deformation of the gantry frame that may occur during processing. Attached Figure Description

[0014] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein: Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 .

[0015] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 .

[0016] Figure 3 This is a cross-sectional view of the overall structure of this utility model.

[0017] Figure 4 This is a partial structural cross-sectional view of the present invention. Figure 1 .

[0018] Figure 5 This is a partial structural cross-sectional view of the present invention. Figure 2 .

[0019] Reference numerals in the attached drawings: 1. Machining center body; 2. Gantry frame; 3. Crossbeam; 4. Column; 5. Connecting seat; 6. Bearing plate; 7. Weight reduction groove; 8. Rib plate; 9. Sealing plate; 10. Steel sleeve; 11. Hydraulic telescopic rod; 12. Carbon fiber bundle; 13. Connecting plate; 14. Tension column; 15. Traction disc; 16. Limiting tube. Detailed Implementation

[0020] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0021] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0022] Please see Figure 1-5 This embodiment proposes a vertical machining center gantry with a composite reinforced structure, including a machining center body 1 and a gantry 2, wherein the gantry structure is further subdivided into a crossbeam 3, a column 4 and a connecting seat 5.

[0023] The crossbeam 3 adopts a rectangular hollow design, with multiple load-bearing plates 6 welded or integrally formed inside. These load-bearing plates 6 are symmetrically distributed inside the crossbeam 3, effectively maintaining the torsional resistance of the crossbeam 3 and significantly enhancing its overall rigidity. The column 4 adopts an I-shaped cross-section design, with weight-reducing grooves 7 on its outer side. This design reduces the overall weight of the column 4, while the honeycomb-shaped stiffening plates 8 (a number of stiffening plates 8, symmetrically distributed from top to bottom) welded to the inner wall of the weight-reducing grooves 7 ensure that the column 4 maintains sufficient load-bearing strength while reducing weight. The column 4 is securely installed on both sides of the upper end of the machining center body 1 with bolts, and the crossbeam 3 and the column 4 are firmly connected by connecting seats 5 and bolts.

[0024] In addition, this embodiment also includes a sealing plate 9, a steel sleeve 10, and a hydraulic telescopic rod 11. The sealing plate 9 is fixedly installed on the rear side of the crossbeam 3, effectively blocking and sealing the opening at the rear end of the crossbeam 3. The steel sleeve 10 penetrates and is fixedly embedded in the upper and lower ends of the crossbeam 3 and the bearing plate 6. Multiple steel sleeves 10 form a group, and two groups of steel sleeves 10 are horizontally symmetrically distributed at the upper and lower ends of the crossbeam 3 and the bearing plate 6, respectively. Carbon fiber bundles 12 are bonded to their interiors with resin, providing additional strength support for the structure.

[0025] Two hydraulic telescopic rods 11 are installed through and fixedly on both sides of the crossbeam 3, symmetrically distributed at the upper and lower ends of both sides of the crossbeam 3. Each hydraulic telescopic rod 11 is equipped with a hydraulic control cylinder (not shown in the figure), and a connecting plate 13 is fixedly installed on its outer telescopic part. A tension column 14 is welded or integrally formed on the inner side of the connecting plate 13, and a traction disc 15 is fixedly installed on the inner side of the tension column 14. Carbon fiber bundles 12 are embedded and bonded to the side of the traction disc 15, while limit tubes 16 are horizontally welded on both sides of the crossbeam 3. The traction disc 15 is movably connected to the inner wall of the limit tube 16, ensuring that the traction disc 15 can only move horizontally and linearly. In addition, laser rangefinders (not shown in the figure) are fixedly installed on both sides of the outer end of the crossbeam 3 for real-time monitoring of the deformation of the crossbeam 3.

[0026] In actual use, by synchronously controlling the opening of the hydraulic telescopic rod 11, the connecting plate 13 moves outward accordingly, thereby driving the tension column 14 and the traction disc 15 to move linearly outward along the inner wall of the limiting tube 16. During this process, the carbon fiber bundle 12 is stretched, causing the hydraulic telescopic rod 11 to apply a preload to the carbon fiber bundle 12 in sequence. This preload is transmitted to the crossbeam 3 and the bearing plate 6 through the steel sleeve 10, forming a reverse bending stress, which effectively counteracts the normal stress caused by the processing load, thereby suppressing the overall or local deformation that may occur in the gantry 2 during processing.

[0027] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A vertical machining center gantry with a composite reinforced structure, comprising a machining center body (1), characterized in that, It includes a gantry frame (2), wherein the gantry frame structure is further subdivided into a crossbeam (3), a column (4) and a connecting seat (5), and a load-bearing plate (6) is provided inside the crossbeam (3); It also includes a sealing plate (9), a steel sleeve (10) and a hydraulic telescopic rod (11). The steel sleeve (10) is inserted through and fixedly embedded in the upper and lower ends of the crossbeam (3) and the bearing plate (6). A carbon fiber bundle (12) is fixed inside the steel sleeve (10). A connecting plate (13) is provided on the telescopic part of the outer end of the hydraulic telescopic rod (11). A tension column (14) is provided on the inner side of the connecting plate (13). A traction disc (15) is provided on the inner side of the tension column (14). The carbon fiber bundle (12) is embedded and fixed to the side end of the traction disc (15). Limiting tubes (16) are horizontally fixed on both sides of the crossbeam (3). The traction disc (15) is attached to the inner wall of the limiting tube (16).

2. The vertical machining center gantry frame with composite reinforced structure according to claim 1, characterized in that, The crossbeam (3) adopts a rectangular hollow design, and there are several load-bearing plates (6), which are symmetrically distributed inside the crossbeam (3).

3. The vertical machining center gantry frame with composite reinforced structure according to claim 2, characterized in that, The column (4) adopts an I-shaped cross section design, and a weight-reducing groove (7) is provided on the outside of the column (4).

4. The vertical machining center gantry frame with composite reinforced structure according to claim 3, characterized in that, The inner wall of the weight reduction groove (7) is welded with honeycomb-shaped ribs (8), and the number of ribs (8) is several, which are symmetrically distributed from top to bottom from the inner wall of the weight reduction groove (7).

5. The vertical machining center gantry frame with composite reinforced structure according to claim 4, characterized in that, The column (4) is fixedly installed on both sides of the upper end of the machining center body (1), while the crossbeam (3) and the column (4) are fixedly connected by connecting seat (5) and bolts.

6. The vertical machining center gantry frame with composite reinforcement structure according to claim 5, characterized in that, The sealing plate (9) is fixedly installed on the rear side of the crossbeam (3). Multiple steel sleeves (10) are grouped together, and two groups of steel sleeves (10) are horizontally symmetrically distributed at the upper and lower ends of the crossbeam (3) and the bearing plate (6).

7. The vertical machining center gantry frame with composite reinforced structure according to claim 6, characterized in that, The hydraulic telescopic rod (11) passes through and is fixedly installed on both sides of the crossbeam (3), and there are two hydraulic telescopic rods (11), which are symmetrically distributed on the upper and lower ends of both sides of the crossbeam (3). Each hydraulic telescopic rod (11) is equipped with a hydraulic control cylinder.

8. The vertical machining center gantry frame with composite reinforced structure according to claim 1, characterized in that, Laser rangefinders are fixedly installed on both sides of the outer end of the crossbeam (3).

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