High dimensional accuracy metal casting

Abstract

The utility model relates to metal casting technical field, concretely is a kind of high dimensional accuracy metal casting, including: shell, shell includes guide rail, base and support beam, guide rail inner side is equipped with guide rail reinforcing part, support beam inner side is equipped with crossbeam reinforcing part, base inner side is equipped with base reinforcing part.The utility model, through the thickness reduction of inner crossbeam, the cooling speed of inner and outer crossbeam is kept identical, avoid the warping of guide rail and base caused by uneven crossbeam cooling;By setting the second rib plate, reduce the bending of crossbeam vertical direction;By setting reinforcing plate, compensate the problem of load-carrying capacity drop caused by the thickness reduction of inner crossbeam;By setting guide rail reinforcing part, reduce the deformation of guide rail in horizontal and vertical direction, in addition, reduce the thickness of guide rail, avoid the stress concentration caused by the inconsistency of inner and outer cooling.

Description

Technical Field

[0001] This utility model relates to the field of metal casting technology, specifically to a high-precision metal casting. Background Technology

[0002] Large components of machine tools and other machining equipment are manufactured using casting, which improves the production efficiency of complex-shaped parts and saves production costs and subsequent finishing time. The dimensional accuracy and structural stability of castings directly affect the final product quality; the higher the casting accuracy, the lower the difficulty of subsequent machining and the higher the accuracy of the final product.

[0003] During the forming process of existing castings, uneven cooling due to thickness differences in various parts can easily lead to uneven shrinkage, causing internal residual stress and deformation, which will gradually appear during subsequent processing or use. A common solution is to increase the machining allowance and use subsequent machining to remove excess deformation. However, this increases processing costs and wastes materials, and the stress release during the cutting process can cause new deformation. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a high-precision metal casting.

[0005] The technical solution of this utility model is:

[0006] A high-precision metal casting, comprising: The housing includes a guide rail, a base, and a support beam. The guide rail has a guide rail reinforcement on its inner side, the support beam has a crossbeam reinforcement on its inner side, and the base has a base reinforcement on its inner side.

[0007] Preferably, the guide rail includes a guide rail section and a guide rail base, and the support beam is located below the guide rail base and its two ends are connected to the base.

[0008] Preferably, the crossbeam includes an inner crossbeam and an outer crossbeam, the thickness ratio of the outer crossbeam to the inner crossbeam is 1:0.6-1:0.8, and several longitudinal beams are vertically arranged between the inner crossbeams.

[0009] Preferably, the guide rail reinforcement includes a first rib and a support plate, the first rib being perpendicular to the guide rail axis, the support plate being perpendicular to the first rib, and the first rib and the support plate being connected by a connecting post at their junction.

[0010] Preferably, the first ribs are arranged unevenly, with the spacing gradually increasing from the middle to both ends.

[0011] Preferably, the crossbeam reinforcement includes a second rib plate, which is used to connect the inner crossbeam and the outer crossbeam, and the spacing of the second rib plate gradually increases from the middle to both ends.

[0012] Preferably, the bottom side of the inner crossbeam is provided with a vertically mounted reinforcing plate, and the reinforcing plate is fixedly connected to the second rib.

[0013] Preferably, the base reinforcement includes at least one central column, and a plurality of second support plates are radially arranged on the outer side of the central column, the second support plates being connected to the inner side of the base.

[0014] Compared with the prior art, the beneficial effects of this utility model are: This invention reduces the thickness of the inner crossbeam to ensure consistent cooling rates between the inner and outer crossbeams, preventing warping of the guide rail and base due to uneven cooling. It also reduces vertical bending of the crossbeam by adding a second rib, compensates for the reduced load-bearing capacity caused by the reduced inner crossbeam thickness with a reinforcing plate, and reduces horizontal and vertical deformation of the guide rail by adding guide rail reinforcement. Furthermore, the reduced guide rail thickness prevents stress concentration caused by inconsistent internal and external cooling. Attached Figure Description

[0015] Figure 1 This is a first schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the outer shell structure in this utility model; Figure 3 This is a bottom view of the overall structure of this utility model; Figure 4 This is a first cross-sectional view of the overall structure of this utility model; Figure 5 This is a schematic diagram of the second cross-sectional structure of this utility model.

[0016] The meanings of the labels in the diagram are as follows: 1. Outer shell; 11. Guide rail section; 12. Guide rail base; 13. Base; 14. Inner crossbeam; 15. Outer crossbeam; 16. Longitudinal beam; 2. Guide rail reinforcement; 21. First rib; 22. Connecting column; 23. Support plate; 3. Crossbeam reinforcement; 31. Second rib; 32. Weight reduction hole; 33. Reinforcing plate; 4. Base reinforcement; 41. Central column; 42. Second support plate; 43. Connecting plate. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example 1: Please see Figure 1-5 The present invention will describe the above technical solution in detail through the following embodiments: A high-precision metal casting, comprising: The outer casing 1 includes a guide rail, a base 13 and a support beam. The inner side of the guide rail is provided with a guide rail reinforcement 2, the inner side of the support beam is provided with a crossbeam reinforcement 3, and the inner side of the base 13 is provided with a base reinforcement 4.

[0019] The outer shell 1 is made of ductile iron. During casting, the guide rail is at the bottom and the base 13 is at the top, with the casting gates located at the base 13 and the support beam.

[0020] The guide rail includes a guide rail section 11 and a guide rail base 12. The support beam is located below the guide rail base 12 and its two ends are connected to the base 13.

[0021] The support beam is used to support the guide rail section 11 and the guide rail seat 12.

[0022] The crossbeam includes an inner crossbeam 14 and an outer crossbeam 15. The thickness ratio of the outer crossbeam 15 to the inner crossbeam 14 is 1:0.6-1:0.8. Several longitudinal beams 16 are vertically arranged between the inner crossbeams 14.

[0023] There are two inner crossbeams 14 and two outer crossbeams 15. The outer crossbeams 15 are located on the outermost side, and the inner crossbeams 14 are located between the two outer crossbeams 15. The longitudinal beam 16 is used to restrict the inner crossbeams 14 from bending inward.

[0024] The outer crossbeam 15 is closer to the edge of the sand mold, so it dissipates heat faster. The inner crossbeam 14 is located in the center of the sand mold, so it dissipates heat slower. Reducing the thickness of the inner crossbeam 14 can ensure that the cooling of the two is consistent.

[0025] The guide rail reinforcement 2 includes a first rib 21 and a support plate 23. The first rib 21 is perpendicular to the guide rail axis, and the support plate 23 is perpendicular to the first rib 21. The first rib 21 and the support plate 23 are connected by a connecting post 22 at their junction.

[0026] The shape of the first rib 21 is adapted to the inner curve of the guide rail portion 11 and the guide rail seat 12, and a chamfer is provided at the contact position between the first rib 21 and the guide rail portion 11 and the guide rail seat 12. This is used to limit the radial deformation of the guide rail portion 11 and the guide rail seat 12.

[0027] The connecting column 22 is a hollow cylinder, which can increase heat dissipation and avoid stress concentration. The support plate 23 is used to support the first rib 21 and prevent the ends of the guide rail 11 and guide rail seat 12 from warping. This improves the load-bearing capacity of the guide rail 11 and guide rail seat 12.

[0028] The first rib 21 is arranged unevenly, with the spacing gradually increasing from the middle to both ends.

[0029] The first rib 21 divides the internal space of the guide rail section 11 and the guide rail seat 12 into several cavities to improve heat dissipation. The middle section has shorter intervals because the bending moment is greatest in the middle. Appropriately reducing the spacing can reduce deformation.

[0030] The crossbeam reinforcement 3 includes a second rib 31, which is used to connect the inner crossbeam 14 and the outer crossbeam 15. The spacing of the second ribs 31 gradually increases from the middle to both ends.

[0031] The second rib 31 can prevent deformation of the inner crossbeam 14 and the outer crossbeam 15 in the horizontal direction.

[0032] The second rib 31 has a transversely penetrating hole 32 in the middle, which can reduce the weight of the second rib 31 and reduce the deformation and stress concentration of the second rib 31 during cooling.

[0033] The bottom side of the inner crossbeam 14 is provided with a vertical reinforcing plate 33, which is fixedly connected to the second rib plate 31.

[0034] The reinforcing plate 33 is used to compensate for the decrease in load-bearing capacity caused by the reduction in the thickness of the inner crossbeam 14.

[0035] The base reinforcement 4 includes at least one central column 41, and a plurality of second support plates 42 are radially arranged on the outer side of the central column 41. The second support plates 42 are connected to the inner side of the base 13.

[0036] The base reinforcement 4 supports the side plates and top plate of the base 13, preventing deformation of the base 13. When the base 13 is wide, multiple central columns 41 can be provided, and adjacent central columns 41 are connected by connecting plates 43. The central columns 41 are preferably hollow cylinders to reduce deformation during cooling.

[0037] Working principle: The outer crossbeam 15 is closer to the edge of the sand mold, so it dissipates heat faster. The inner crossbeam 14 is located in the center of the sand mold, so it dissipates heat slower. Reducing the thickness of the inner crossbeam 14 can ensure that the cooling of the two is consistent.

[0038] The shape of the first rib 21 is adapted to the inner curve of the guide rail portion 11 and the guide rail seat 12, and is used to limit the radial deformation of the guide rail portion 11 and the guide rail seat 12.

[0039] The support plate 23 is used to support the first rib 21, preventing the guide rail part 11 and the guide rail seat 12 from warping at both ends. This improves the load-bearing capacity of the guide rail part 11 and the guide rail seat 12.

[0040] The second rib 31 can prevent deformation of the inner crossbeam 14 and the outer crossbeam 15 in the horizontal direction.

[0041] The reinforcing plate 33 is used to compensate for the decrease in load-bearing capacity caused by the reduction in the thickness of the inner crossbeam 14.

[0042] The base reinforcement 4 supports the side plates and top plate of the base 13, preventing deformation of the base 13. When the base 13 is wide, multiple central columns 41 can be provided, and adjacent central columns 41 are connected by connecting plates 43. The central columns 41 are preferably hollow cylinders to reduce deformation during cooling.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-precision metal casting, characterized in that, include: The outer casing (1) includes a guide rail, a base (13) and a support beam. The guide rail is provided with a guide rail reinforcement (2) on its inner side, the support beam is provided with a crossbeam reinforcement (3) on its inner side, and the base (13) is provided with a base reinforcement (4) on its inner side.

2. The high-precision metal casting as described in claim 1, characterized in that: The guide rail includes a guide rail section (11) and a guide rail seat (12), and the support beam is located below the guide rail seat (12) and its two ends are connected to the base (13).

3. A high-precision metal casting as described in claim 2, characterized in that: The crossbeam includes an inner crossbeam (14) and an outer crossbeam (15), the thickness ratio of the outer crossbeam (15) and the inner crossbeam (14) is 1:0.6-1:0.8, and several longitudinal beams (16) are vertically arranged between the inner crossbeams (14).

4. A high-precision metal casting as described in claim 2, characterized in that: The guide rail reinforcement (2) includes a first rib (21) and a support plate (23). The first rib (21) is perpendicular to the guide rail axis, and the support plate (23) is perpendicular to the first rib (21). The first rib (21) and the support plate (23) are connected by a connecting post (22) at their junction.

5. A high-precision metal casting as described in claim 4, characterized in that: The first rib (21) is arranged unevenly, with the spacing gradually increasing from the middle to both ends.

6. A high-precision metal casting as described in claim 3, characterized in that: The crossbeam reinforcement (3) includes a second rib (31) for connecting the inner crossbeam (14) and the outer crossbeam (15), and the spacing of the second rib (31) gradually increases from the two ends of the middle phase.

7. A high-precision metal casting as described in claim 3, characterized in that: The inner crossbeam (14) has a vertically mounted reinforcing plate (33) at the bottom of its side, and the reinforcing plate (33) is fixedly connected to the second rib plate (31).

8. A high-precision metal casting as described in claim 1, characterized in that: The base reinforcement (4) includes at least one central column (41), and a plurality of second support plates (42) are radially arranged on the outer side of the central column (41). The second support plates (42) are connected to the inner side of the base (13).

Images