A bearing forging blanking device

Abstract

The utility model relates to a kind of bearing forging blanking device, comprising: bottom plate and fixed in the bottom plate lower end surface pressing plate assembly;Pressing plate assembly includes two size specifications same first pressing plate and second pressing plate, two pressing plates are mirror image set in the lower part of bottom plate with the radial center line of bottom plate as center;The bottom plate is rectangle board, the outer end edge of two pressing plates is respectively flush with the two end edges of the direction of bottom plate long side setting, spacing is formed between two pressing plates;The lower bottom surface of the two pressing plates, inner side and the lower bottom surface of the bottom plate between two pressing plates jointly form the profiling forging and pressing cooperation area of bearing forge piece;The device can realize the relevant requirement of complete profiling forging process, can make blank accurate profiling, ensure the accuracy of the profiling blanking of forging, so that blank is greatly promoted in ring rolling mill and is expanded quality, realize two ends difference and finished product size same, carry out the practice of full profiling forging process, improve forge piece material utilization rate, also improve the efficiency of fitter.

Description

Technical Field

[0001] This utility model relates to a bearing forging blank preparation device, which is applied to the profile blank preparation process of a large hydraulic press and belongs to the field of bearing processing technology. Background Technology

[0002] In recent years, with the increasing demand for extra-large wind power bearings, finished product customers have been purchasing forgings based on the lowest price offered by price comparison. This has put great pressure on the forging industry. Under the current circumstances, it is necessary to improve the quality of bearing forgings through technological innovation and process improvement to reduce the weight of forgings, lower costs, and meet customer quality requirements. However, the complete copying process is often impossible to implement due to limitations in billet preparation. At present, copying billet preparation requires a lot of manpower and time. Therefore, accelerating the speed and accuracy of billet preparation is the key to realizing the copying process. The implementation of the copying process requires the use of specialized billet preparation fixtures.

[0003] The inner ring structure of extra-large wind turbine bearings differs significantly from conventional products. In particular, the inner rings of extra-large spherical bearings and double-row tapered roller bearings exhibit substantial differences between their ends, typically ranging from 65mm to 80mm. Furthermore, due to size and weight limitations, radial-axial rolling mills are generally used. Conventional forging processes can only achieve a 30mm difference between the ends. Moreover, the forging characteristics of radial-axial rolling mills often lead to defects such as roll climbing and warping in the forgings, making full-contouring processes impossible. Therefore, developing a forging blank preparation device that meets the requirements of full-contouring processes is a crucial technical problem that needs to be solved in the bearing forging field. Utility Model Content

[0004] In view of the technical problems existing in the prior art, the purpose of this utility model is to provide a bearing forging blank preparation device that can not only ensure the accuracy of the forging blank preparation, but also ensure the processing speed.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a bearing forging blank preparation device, comprising: a base plate and a pressure plate assembly fixed to the lower end face of the base plate; the pressure plate assembly includes two first pressure plates and a second pressure plate of the same size, the two pressure plates being mirror-imagely arranged on the lower part of the base plate with the radial center line of the base plate as the center; the base plate is a rectangular plate. The outer edges of the two pressure plates are flush with the two ends of the long side of the base plate, and a gap is formed between the two pressure plates; the bottom surface and inner surface of the two pressure plates and the bottom surface of the base plate between the two pressure plates together form the conformal forging mating area of ​​the bearing forging; four lifting lugs are fixedly installed at the four corners of the rectangular base plate, and the four lifting lugs are connected to the anvil of the press by installing chain assemblies. Furthermore, the lifting lug is provided with a stepped platform structure that matches the base plate, and the stepped surface of the stepped platform is welded to the outer side and the bottom surface of the base plate. Furthermore, the inner sides and inner chamfers of the two pressure plates are designed with a smooth arc transition. The inner sides form a 75° angle with the upper surface of the pressure plates, and the inner chamfers are R20 rounded chamfers. The inner chamfers are smoothly connected to the inner sides and the bottom surface respectively. Furthermore, the first pressure plate and the second pressure plate are fixedly connected to the base plate by screws. The base plate is provided with screw holes that match the screws. The two pressure plates at the corresponding positions of the screw holes on the base plate are provided with 2*M20 threaded through holes. Each pressure plate is connected by two evenly arranged M20*60 cylindrical head screws to increase the stability of the fixation. Furthermore, the chain assembly includes: chains and eye bolts; when installing the blanking device, the same end of the four chains is connected to the four lifting lugs respectively, and the other end of the four chains is connected to the anvil of the press respectively through eye bolts.

[0006] Furthermore, the eye bolt includes a threaded section and a hook section, with a 100mm long threaded section at the end of the threaded section; in use, it is connected to the anvil of the press through this threaded section. This solution involves installing the device on the anvil of a hydraulic press after the billet has been heated and punched. Then, the billet is made using the frame and the device, which can achieve the effect of shaping the billet. Finally, it is rolled and expanded on a ring rolling machine to achieve a complete shaping process.

[0007] In the specific bearing forging process, the original billet is punched to obtain a billet with an internal hole. Before the forging begins, the frame is placed in the working area of ​​the press. Then, the mandrel is inserted into the inner hole of the punched billet to assemble the mandrel with the billet. After that, the mandrel is placed on the frame to support and fix the billet. Then, the forging operation is carried out by the billet forming device located above the billet. In the machining of this bearing forging, the frame and mandrel play important roles: The frame mainly serves to support and fix the mandrel, providing a stable basic support structure for the entire processing, ensuring the mandrel's stable position during operation, and facilitating the corresponding processing operations on the bearing forgings.

[0008] Mandrel: Used for positioning and shaping bearing forgings. Under the action of equipment such as presses, and in conjunction with components such as billet making devices, it helps to form the bearing forgings into the required shape, ensuring the dimensional and shape accuracy of the forgings.

[0009] The beneficial effects of this utility model are: This device can meet the requirements of the full-contour forging process, accurately conforming the blank to the desired shape, ensuring the accuracy of the forging blank, thus greatly improving the rolling quality of the blank on the ring rolling mill, achieving the same size difference between the two ends as the finished product, practicing the full-contour forging process, improving the utilization rate of forging materials, and also improving the efficiency of machining. Attached Figure Description

[0010] Figure 1 This is a structural diagram of the blank-making device of this utility model.

[0011] Figure 2 This is a partial top cross-sectional view of the blank-forming device of this utility model.

[0012] Figure 3 for Figure 2 A sectional view.

[0013] Figure 4 This is a structural diagram of the bottom plate in the blank-making device of this utility model.

[0014] Figure 5 for Figure 4 A sectional view.

[0015] Figure 6 This is a structural diagram of the first pressure plate in the blank-making device of this utility model.

[0016] Figure 7 for Figure 6 A sectional view.

[0017] Figure 8 This is a structural diagram of the second pressure plate in the blank-making device of this utility model.

[0018] Figure 9 for Figure 8 A sectional view.

[0019] Figure 10 This is a structural diagram of the lifting lug in the blank-making device of this utility model.

[0020] Figure 11 for Figure 10 Side view.

[0021] Figure 12 This is a structural diagram of the lifting eye bolt used in the blank-making device of this utility model.

[0022] Figure 13 This is a schematic diagram of the billet-making device of this utility model in use.

[0023] In the picture: 1. Base plate; 1.1. Radial center line of the base plate; 1.2. Bottom surface of the base plate between the two pressure plates; 1.3. Screw holes; 2. First pressure plate; 2.1. Bottom surface; 2.2. Inner side surface; 2.3. Inner chamfer; 2.4. Upper surface of pressure plate; 2.5. Threaded through hole; 3. Second pressure plate; 3.1. Bottom surface; 3.2. Inner side surface; 3.3. Inner chamfer; 3.4. Upper surface of pressure plate; 3.5. Threaded through hole; 4. Lugs; 4.1. Stepped surface; 5. Press anvil; 6. Screws; 7. Eye bolt, 7.1. Threaded rod, 7.2. Hook; 7.1.1 Threaded area section; 8. Bearing forgings; 9. Core rod; 10. Horse frame. Detailed Implementation

[0024] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0025] like Figure 1-13 A bearing forging blank preparation device is shown, comprising: a base plate 1 and a pressure plate assembly fixed to the lower end face of the base plate 1; the pressure plate assembly includes two first pressure plates 2 and second pressure plates 3 of the same size, which are mirror images of each other on the lower part of the base plate 1 with the radial center line 1.1 of the base plate as the center; the base plate 1 is a rectangular plate, and the outer edges of the two pressure plates are respectively flush with the two ends of the long side of the base plate 1, forming a gap between the two pressure plates; the lower bottom surface 2.1 and inner side surface 2.2 of the first pressure plate, the lower bottom surface 3.1 and inner side surface 3.2 of the second pressure plate, and the lower bottom surface 1.2 of the base plate between the two pressure plates together form the contour forging mating area of ​​the bearing forging 8; four lifting lugs 4 are fixedly provided at the four corners of the rectangular base plate 1, and the four lifting lugs 4 are connected to the anvil 5 of the press through the installation chain assembly; the bearing forging 8 is forged into the corresponding contour shape through the contour forging mating area; Furthermore, the thickness of the base plate 1 and the two pressure plates is 40mm. Furthermore, the lifting lug 4 is provided with a stepped platform structure that cooperates with the base plate 1, and the stepped surface 4.1 of the stepped platform is welded to the outer side and the bottom surface of the base plate 1. Furthermore, the inner surfaces and inner chamfers (2.2, 2.3) and (3.2, 3.3) of the two pressure plates are designed with a smooth arc transition. Taking the first pressure plate 2 as an example, the inner surface 2.2 forms a 75° angle with the upper surface 2.4 of the pressure plate, and the inner chamfer 2.3 is an R20 arc chamfer. The inner chamfer 2.3 is smoothly connected to the inner surface 2.2 and the lower bottom surface 2.1 respectively. The specific angles of the inner surfaces and inner chamfers of the pressure plates are determined according to the size requirements of the bearing forging 8.

[0026] Furthermore, the first pressure plate 2 and the second pressure plate 3 are fixedly connected to the base plate 1 by screws 6. The base plate 1 is provided with screw holes 1.3 that match the screws 6. The two pressure plates at the corresponding positions of the screw holes 1.3 on the base plate 1 are provided with two threaded through holes (2.5 and 3.5) of M20. Each pressure plate is connected by two evenly arranged M20*60 cylindrical head screws to increase the stability of the fixation. Correspondingly, there are four cylindrical head screw holes on the base plate 1.

[0027] Furthermore, the chain assembly includes: chains and eye bolts 7; when installing the blanking device, the same end of the four chains is connected to the four lifting lugs 4 respectively, and the other end of the four chains is connected to the anvil 5 of the press through eye bolts 7 respectively.

[0028] Furthermore, the eye bolt 7 includes a screw portion 7.1 and a hook portion 7.2. The end of the screw portion 7.1 is provided with a 100mm long threaded section 7.1.1. In use, the bolt section 7.1.1 is used to connect with the anvil 5 of the press through a screw engagement. The hook portion 7.2 is connected to the other end of the chain.

[0029] Furthermore, the diameter of the screw portion 7.1 is 20 mm.

[0030] Furthermore, the thickness of the lug 4 is 10mm.

[0031] In this scheme, after the billet is heated and punched, the billet-making device is installed on the anvil 5 of the hydraulic press. Then, the billet is made using the frame 10 and the device, which can achieve the effect of shaping the billet. Then, it is rolled and expanded on the ring rolling machine to achieve a complete shaping process.

[0032] In the specific bearing forging process, the original billet is punched to obtain a billet with an internal hole. Before the forging starts, the frame 10 is placed in the working area of ​​the press. Then, the mandrel 9 is inserted into the inner hole of the punched billet to assemble the mandrel 9 with the billet. Then, the mandrel 9 is placed on the frame 10 to complete the support and fixation of the billet. Then, the forging operation is carried out by the billet forming device located above the billet. In the machining of this bearing forging, the frame and mandrel play important roles: The frame 10 mainly serves to support and fix the mandrel 9, providing a stable basic support structure for the entire processing, ensuring the mandrel 9 is stable in position during operation, and facilitating the corresponding processing operations on the bearing forging 8.

[0033] Mandrel 9: Used for positioning and shaping of bearing forgings 8. Under the action of equipment such as presses, and in conjunction with components such as billet making devices, it helps to form the bearing forging shape that meets the requirements, and ensures the dimensional and shape accuracy of the forging.

[0034] The mandrel 9 and the frame 10 are connected by a slot, that is, the mandrel 9 has a positioning groove that matches the upper end of the frame 10. The upper end of the frame 10 is precisely inserted into the positioning groove of the mandrel 9, thereby ensuring the accurate position of the mandrel 9 in the horizontal and vertical directions and avoiding displacement during the forging process.

[0035] In the above process, the frame 10 provides support for the mandrel 9. During forging, when the mandrel 9 containing the blank is placed on the frame 10, the frame 10 provides continuous support to the mandrel 9. Because the blanking device installed on the anvil 5 of the press applies a large pressure to the blank during forging, the blank will transfer some of the pressure to the mandrel 9. At this time, the frame 10 can share some of the pressure borne by the mandrel 9, preventing the mandrel 9 from bending or deforming due to excessive force; ensuring that the mandrel 9 maintains a stable working state during forging, thereby ensuring that the blank can be deformed in the expected way to obtain a qualified bearing forging 8.

[0036] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0040] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

Claims

1. A bearing forging blank preparation apparatus, characterized in that, include: The base plate and a pressure plate assembly fixed to the lower end face of the base plate; the pressure plate assembly includes two first pressure plates and a second pressure plate of the same size, which are mirror images of each other on the lower part of the base plate with the radial center line of the base plate as the center; the base plate is a rectangular plate, and the outer edges of the two pressure plates are flush with the two ends of the long side of the base plate, forming a gap between the two pressure plates; the lower bottom surface and inner side surface of the two pressure plates and the lower bottom surface of the base plate between the two pressure plates together form the conformal forging mating area of ​​the bearing forging; four lifting lugs are fixedly installed at the four corners of the rectangular base plate, and the four lifting lugs are connected to the anvil of the press by installing chain assemblies.

2. The bearing forging blank preparation device according to claim 1, characterized in that: The thickness of the base plate and the two pressure plates is set to 40mm.

3. The bearing forging blank preparation apparatus according to claim 1, characterized in that: The lifting lug is equipped with a stepped platform structure that matches the base plate, and the stepped surface of the platform is welded to the outer side and the bottom surface of the base plate.

4. The bearing forging billet preparation device according to claim 1, characterized in that: The inner sides and inner chamfers of the two pressure plates are designed with a smooth arc transition. The inner sides form a 75° angle with the upper surface of the pressure plates. The inner chamfers are R20 rounded chamfers, and the inner chamfers are smoothly connected to the inner sides and the bottom surface.

5. The bearing forging blank preparation apparatus according to claim 1, characterized in that: The first pressure plate and the second pressure plate are fixedly connected to the base plate by screws. The base plate is provided with screw holes that match the screws. The two pressure plates at the corresponding positions of the screw holes on the base plate are provided with 2*M20 threaded through holes. Each pressure plate is connected by two evenly arranged cylindrical head screws.

6. The bearing forging blank preparation apparatus according to claim 5, characterized in that: There are four cylindrical head screw holes on the base plate.

7. The bearing forging blank preparation apparatus according to claim 1, characterized in that: The chain assembly includes: chains and eye bolts; when installing the blanking device, the same end of the four chains is connected to the four lifting lugs respectively, and the other end of the four chains is connected to the anvil of the press respectively through eye bolts.

8. A bearing forging blank preparation apparatus according to claim 7, characterized in that: The eye bolt includes a screw section and a hook section. The end of the screw section is provided with a 100mm long threaded section. In use, it is connected to the anvil of the press through the threaded section.

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