Disc pre-forging piece and disc die forging piece forming system
By setting a boss structure on the end face of the disc pre-forging, the problem of misalignment of the circular ejector pin is solved, realizing efficient forming of disc die forgings, improving yield and production efficiency, and reducing costs.
Patent Information
- Application Number
- CN202423305578.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-31
AI Technical Summary
During the die forging process, the circular ejector pin is prone to misalignment, which leads to changes in the forging structure, reduces yield and production efficiency, and increases costs.
Several bosses are provided on the end face of the disc pre-forging part. The bosses are distributed at intervals along the periphery and cooperate with the forging die to achieve effective positioning and avoid rotation and folding defects.
It improved the forming quality and yield of disc forgings, reduced production costs, and increased production efficiency.
Smart Images
Figure CN223616709U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of die forging, and in particular to a disc pre-forging and a disc die forging forming system. Background Technology
[0002] After the die forging is formed, an ejector pin structure is usually designed to facilitate demolding. To facilitate the assembly of the ejector pin, a cylindrical structure is usually adopted. For non-circular ejector pins, they have a positioning function to prevent misalignment. However, cylindrical parts are prone to problems such as misalignment and inaccurate positioning.
[0003] In related technologies, firstly, during the final forging process of circular parts, the upper die position is fixed, but because the ejector pin has a circular structure, it can shift or rotate during assembly, causing circumferential structural displacement defects in the forging. This leads to changes in the forging structure and significantly reduces the yield rate. Secondly, for forgings with a circular bottom structure, if folding defects occur during forging, repair and re-forging are required. Due to ejector pin displacement and rotation, the production efficiency of cylindrical parts is greatly reduced, increasing production costs.
[0004] Therefore, how to improve the forming quality and yield of disc forgings is a technical problem that needs to be solved by those skilled in the art. Utility Model Content
[0005] The purpose of this invention is to provide a forming system for disc pre-forging and disc die forging, which can effectively improve the yield of die forgings, reduce folding defects, and lower forming costs.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A pre-forged disc includes a disc body, wherein a plurality of bosses are provided on the end face of the disc body, the bosses being spaced apart along the periphery of the end face; and the bosses are located on the side of the end face near the outer periphery.
[0008] On the other hand, in the radial direction of the end face, the height of the boss gradually increases and then gradually decreases from one side near the center of the end face to the other side.
[0009] On the other hand, the distance between the boss and the center of the end face is 0.78-0.92 times the radius of the end face.
[0010] On the other hand, the central angle between adjacent bosses relative to the center of the end face is 10-20°.
[0011] On the other hand, each of the aforementioned bosses is located on the same side of the end face.
[0012] On the other hand, the boss includes a plurality of first bosses, each first boss including a frustum portion and a protrusion portion, the protrusion portion being located on the side of the frustum portion near the center of the end face.
[0013] On the other hand, the boss also includes a plurality of second bosses, each of which is located between two first bosses, and the first bosses are frustum-shaped.
[0014] On the other hand, the side of the protrusion away from the end face is a plane, and the plane gradually slopes away from the end face from the side closest to the center of the end face.
[0015] On the other hand, the protrusion coincides with the highest point of the frustum portion, and the frustum portion is provided with several edges in the circumferential direction.
[0016] This utility model also provides a disc forging forming system, including a pre-pressing mold, which is used to form the disc pre-forging as described in any of the above.
[0017] The pre-forged disc provided by this utility model includes a disc body with a plurality of bosses on its end face. These bosses are spaced apart along the periphery of the end face and are located on the side of the end face closer to the outer periphery. By providing a plurality of boss structures on the disc body, spaced apart along the periphery of the end face, and through the cooperation of the disc body and the forging die, the pre-forged disc body can be effectively limited circumferentially, preventing rotation during forging and thus avoiding folding defects. This improves the circumferential positioning accuracy of the disc body, enhances the forming quality of the pre-forged disc, and consequently improves the forming quality of the final forging, increasing the yield and production efficiency of the final forging.
[0018] The disc forging forming system provided by this utility model is equipped with the above-mentioned disc pre-forging. Since the disc pre-forging has the above-mentioned technical effects, the disc forging forming system equipped with the disc pre-forging should also have the corresponding technical effects. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the end face structure of a disc forging.
[0021] Figure 2 for Figure 1 The diagram shows the AA section.
[0022] Figure 3 A schematic diagram of the end face structure of a specific embodiment of the disc pre-forging provided by this utility model;
[0023] Figure 4 for Figure 3 The diagram shows a cross-section of BB.
[0024] Figure 5 This is a schematic diagram illustrating the process of forming a pre-forged disc into a die-forged disc, as provided by this utility model.
[0025] Figure label:
[0026] 100 forged disc; 101 protrusion;
[0027] 1. Disc body; 2. End face; 3. Boss; 31. First boss; 311. Frustum portion; 312. Protrusion; 313. Edge; 314. Plane; 32. Second boss. Detailed Implementation
[0028] The core of this invention is to provide a forming system for disc pre-forging and disc die forging 100, which can significantly improve the forming quality of die forgings and save costs.
[0029] 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.
[0030] Please refer to Figures 3 to 5 , Figure 3 A schematic diagram of the end face 2 structure of a specific embodiment of the disc pre-forging provided by this utility model; Figure 4 for Figure 3 The diagram shows a cross-section of BB. Figure 5 This is a schematic diagram illustrating the process of forming the disc pre-forging part into the disc die forging part 100 provided by this utility model.
[0031] In this embodiment, the disc pre-forging part includes a disc body 1, and a plurality of bosses 3 are provided on the end face 2 of the disc body 1. The bosses 3 are distributed at intervals along the periphery of the end face 2, and the bosses 3 are located on the side of the end face 2 near the outer periphery.
[0032] Specifically, in the final forging, the end face 2 of the final forging has a circumferentially extending protrusion 101, such as... Figure 1 and Figure 2 As shown, in order to facilitate the formation of the protrusion 101, the disc body 1 of the disc pre-forging part is provided with a boss 3 structure. The boss 3 cooperates with the groove in the pre-pressing mold. On the one hand, it can prevent the disc body 1 from rotating. On the other hand, the boss 3 can be directly formed into the protrusion 101 structure, which is convenient for subsequent forming.
[0033] The disc pre-forging provided by this utility model has a plurality of bosses 3 on the disc body 1. The bosses 3 are distributed at intervals along the periphery of the end face 2. Through the cooperation between the disc body 1 and the forging die, the circumferential direction of the disc body 1 can be effectively limited, so as to avoid the disc body 1 from rotating during the forging process and thus generating folding defects. This can improve the positioning accuracy of the disc body 1 in the circumferential direction, improve the forming quality of the disc pre-forging, thereby improving the forming quality of the final forging, and improving the yield and production efficiency of the final forging.
[0034] In some embodiments, the height of the boss 3 in the radial direction of the end face 2 gradually increases and then gradually decreases from one side near the center of the end face 2 to the other side. This arrangement not only facilitates molding, but also makes the boss 3 more stable under pressure after being squeezed, which is conducive to deformation to form the protrusion 101.
[0035] In some embodiments, the distance between the boss 3 and the center of the end face 2 is 0.78-0.92 times the radius of the end face 2. That is, the boss 3 is located near the outer periphery of the end face 2. This setting provides a good limiting effect, the boss 3 is spaced far apart, which is beneficial for molding and makes it less likely to produce folding defects, thus reducing the risk of misalignment.
[0036] In some embodiments, the central angle between adjacent bosses 3 and the center of the end face 2 is 10-20°; that is, the distance between adjacent bosses 3 is 0.026 to 0.052 times the circumference of the end face 2. With this setting, the distance between adjacent bosses 3 will not be too large, which is convenient for forming, nor too small, which is inconvenient for forming. Of course, the position of the bosses 3 can be adapted to the position of the protrusion 101 structure in the final forging.
[0037] In some embodiments, all bosses 3 are located on the same side of the end face 2, such as... Figure 3 As shown, the protrusions 3 are close to each other, so that the same side of the end face 2 can be formed to facilitate the forming of the protrusion 101 structure.
[0038] In some embodiments, the boss 3 includes a plurality of first bosses 31, each first boss 31 including a frustum portion 311 and a protrusion 312, the protrusion 312 being located on the side of the frustum portion 311 near the center of the end face 2; this arrangement is to facilitate the engagement of the boss 3 with the groove in the pre-pressing mold and improve the limiting effect; and during the forging process, the metal of the protrusion 312 and the frustum portion 311 deforms synchronously to form the protrusion 101 structure in the final forging.
[0039] In some embodiments, the boss 3 further includes a plurality of second bosses 32, each of which is located between two first bosses 31, and the first bosses 31 are frustum-shaped. With this arrangement, the bosses 3 on both sides of each boss 3 are second bosses 32, and the boss 3 in the middle of each boss 3 is a first boss 31. The different shapes facilitate positioning and improve assembly accuracy.
[0040] In some embodiments, the side of the protrusion 312 away from the end face 2 is a plane 314, and the plane 314 gradually slopes away from the end face 2 from the side near the center of the end face 2 to the other side; when the plane 314 is provided, the metal of the frustum portion 311 can be deformed by pushing the protrusion 312 under the action of extrusion force, which facilitates the forming of the protrusion 101 structure.
[0041] In some embodiments, the protrusion 312 coincides with the highest point of the frustum portion 311, and the frustum portion 311 is provided with a plurality of edges 313 in the circumferential direction for easy forming, and the frustum portion 311 is limited by the groove.
[0042] This pre-forged disc effectively avoids circumferential structural misalignment, solving the problems of misalignment and inaccurate positioning that easily occur during the forming process of the disc forging 100, leading to low production efficiency and non-compliant finished product dimensions. The design of this pre-forged disc, by adding a boss 3 structure, allows it to fit snugly against the final die during forging, providing a positioning function and preventing misalignment of the forging during the forging process, thus avoiding defects in the dimensional conformity of the forging.
[0043] Taking a certain disc forging 100 as an example, the forging material is 2A14 aluminum alloy, the outer contour of the forging is Φ440×45mm, and there is a small protrusion 101 structure; when designing the disc pre-forging, a boss 3 is added so that it fits with the final die during the final forging process and plays a positioning role. At the same time, the boss 3 corresponds to the structure of the final forging and plays a pre-forming role, avoiding folding defects during the forging process. This achieves a forging method that makes the disc part easy to position and avoids folding defects during the forging process.
[0044] The disc pre-forging part only requires structural optimization of the pre-forging part in the early stage of design. The design of the convenient and simple boss 3 structure, along with the design of the corresponding pre-pressing mold, is sufficient. There is no need to improve or optimize the final forging part and the final pressing mold. The method is simple and effective, and using this method can improve the product yield and production efficiency.
[0045] In addition to the aforementioned disc pre-forging, this utility model also provides a disc die forging (100) forming system, including a pre-pressing mold for forming the aforementioned disc pre-forging. The pre-pressing mold has a groove that matches the boss (3) of the disc pre-forging. For the structure of other parts of this disc die forging (100) forming system, please refer to relevant technologies, which will not be described in detail here.
[0046] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0047] The forged disc preform provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.
Claims
1. A disc pre-forging, characterized in that, Includes a disk body (1), and a plurality of protrusions (3) are provided on the end face (2) of the disk body (1). The protrusions (3) are distributed at intervals along the periphery of the end face (2); and the protrusions (3) are located on the side of the end face (2) near the outer periphery.
2. The disc pre-forging according to claim 1, characterized in that, In the radial direction of the end face (2), the height of the boss (3) gradually increases and then gradually decreases from one side near the center of the end face (2) to the other side.
3. The disc pre-forging according to claim 1, characterized in that, The distance between the boss (3) and the center of the end face (2) is 0.78-0.92 times the radius of the end face (2).
4. The disc pre-forging according to claim 1, characterized in that, The central angle between adjacent bosses (3) relative to the center of the end face (2) is 10-20°.
5. The disc pre-forging according to claim 4, characterized in that, Each of the aforementioned bosses (3) is located on the same side of the end face (2).
6. The disc pre-forging according to any one of claims 1 to 5, characterized in that, The boss (3) includes a plurality of first bosses (31), each first boss (31) including a frustum portion (311) and a protrusion (312), the protrusion (312) being located on the side of the frustum portion (311) near the center of the end face (2).
7. The disc pre-forging according to claim 6, characterized in that, The protrusion (3) further includes a plurality of second protrusions (32), each of the second protrusions (32) being located between two first protrusions (31), and the first protrusions (31) being frustum-shaped.
8. The disc pre-forging according to claim 6, characterized in that, The side of the protrusion (312) away from the end face (2) is a plane (314), and the plane (314) gradually tilts away from the end face (2) from the side near the center of the end face (2) to the other side.
9. The disc pre-forging according to claim 6, characterized in that, The protrusion (312) coincides with the highest point of the frustum (311), and the frustum (311) is provided with several edges (313) in the circumferential direction.
10. A disc forging forming system, comprising a pre-pressing die, characterized in that, The pre-pressing mold is used to form a disc pre-forging as described in any one of claims 1 to 9, and the pre-pressing mold is provided with a groove that matches the boss (3) of the disc pre-forging.