Hot die forging die for aluminum alloy control arm
By designing a two-cavity mold for hot forging of aluminum alloy control arms, with symmetrical cavity distribution and optimized mold heating, the problem of lateral force on the mold during forging was solved, improving product quality, production efficiency, and reducing costs.
Patent Information
- Application Number
- CN202422829231.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2026-03-20
- Estimated Expiration
- 2034-11-20
AI Technical Summary
In the forging process of aluminum alloy control arms, traditional molds are easily affected by lateral forces, resulting in severe mold wear, mold misalignment, increased safety hazards, and substandard product quality, as well as low production efficiency.
A hot forging die for an aluminum alloy control arm was designed, adopting a one-die-two-cavity structure with cavities centrally or axially symmetrically distributed. Combining die flow analysis and temperature field optimization, the positions of heating tubes and thermocouples are designed to ensure constant die temperature. The locking structure has reasonable strength to counteract lateral forces and improve production efficiency.
It effectively offsets the lateral force of the mold, reduces lock wear, improves product qualification rate and production efficiency, reduces production costs, and meets the needs of mass production.
Smart Images
Figure CN224011130U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a forging die structure technical field especially relates to a kind of hot die forging die of aluminium alloy control arm. BACKGROUND
[0002] With the development of new energy automobile industry, in order to reduce the energy consumption problem of automobile, in recent years, major car companies are along the direction of vehicle lightweight to design vehicle body structure, and because the weight of aluminium alloy piece is lighter, so the amount of aluminium alloy used in automobile gradually increases;On automobile chassis suspension, major car companies are also promoting the use of aluminium alloy forged control arm, from traditional sheet metal welding piece to aluminium alloy forging piece, not only because the weight of aluminium alloy piece is light, but also the mechanical properties of aluminium alloy are good through hot die forging process, while major car companies keep the overall performance requirements of chassis suspension system unchanged, and there are many other parts such as new energy automobile chassis system sensor, so aluminium alloy control arm avoids other parts more in design stage, sometimes product modeling structure is too inclined in parting, and the height difference of parting line is too large, which leads to lateral force during forging, thereby leading to unqualified forging piece. SUMMARY
[0003] To solve the technical problems in the background art, the utility model provides a kind of hot die forging die of aluminium alloy control arm.
[0004] The utility model provides a kind of hot die forging die of aluminium alloy control arm, including die, and being divided into upper die and lower die, its characterized in that, the upper die is fixed on upper fixed plate, and the lower die is fixed on lower fixed plate, the cavity in the die is equipped with two groups, and is first cavity and second cavity respectively.
[0005] Preferably, the first cavity and the second cavity are centrally symmetric or axially symmetric.
[0006] Preferably, the upper die and the lower die are provided with grooves on the side surfaces, and the grooves are provided with four heating tube holes, two thermocouple holes and a wiring groove.
[0007] Preferably, the upper die and the lower die are provided with tooth-shaped locks on the abutting surfaces, and the locks of the upper die and the lower die are engaged with each other.
[0008] Preferably, the first cavity and the second cavity are provided with flash grooves around.
[0009] The utility model discloses a kind of hot die forging die of aluminum alloy control arm, the original one hole structure is changed into one mould two hole structure on the basis of this mould structure, not only solve the lateral force problem of mould but also improve the class production increase production efficiency. Thus for the mould structure design of this type of forging, the lateral force problem of mould can be solved by the mould structure design method mentioned in this patent, and the mould structure design method is relatively simple, simple in production practice and the efficiency is improved when artificial production, the design avoids the lateral force of mould generated in the forging process of traditional forging die, provides a kind of simple and effective mould structure. It solves the problem of low pass rate caused by the lateral force of mould of original production process forging, and improves production efficiency, saves production cost, meets the requirement of batch production.
[0010] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS
[0011] Fig. 1 It is structure schematic view of the utility model;
[0012] Fig. 2 It is top view of lower mould in the utility model;
[0013] Fig. 3 It is front view when the mould of the utility model is combined;
[0014] Explanation of reference numerals in the drawing:
[0015] 1, positioning groove;2, thermocouple hole;3, heating tube hole;4, threaded fixing hole;5, hoisting hole;6, heating box;7, first cavity;8, flash groove;9, locking hole;10, second cavity;101, upper fixed plate;102, upper mould;103, lower mould;104, lower fixed plate;105, blank. DETAILED DESCRIPTION
[0016] The embodiments of the utility model are described in detail below, and the examples of the embodiments are represented in the drawings, wherein the same or similar symbols represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as limiting the utility model.
[0017] As Figs. 1-3 Indicated in one kind of hot die forging die of aluminum alloy control arm, including mould, divide into upper mould 102 and lower mould 103, its characterized in that, upper mould 102 is fixed on upper fixed plate 101, lower mould 103 is fixed on lower fixed plate 104, the cavity in mould is equipped with two groups, and is first cavity 7 and second cavity 10 respectively.
[0018] Preferably, the first cavity 7 and the second cavity 10 are centrally or axially symmetrically distributed.
[0019] The mold cavity is a structure of two cavities in one mold, and the two cavities are centrally or axially symmetrically distributed to offset the lateral force of the mold generated during forging. In the production process, two blank 105s prepared in the previous process are manually taken out, and the two blank 105s are respectively placed into the limiting reference grooves of the cavities,
[0020] The upper die 102 is provided with a positioning groove 1 and a lifting hole, and the lower die 103 is provided with a locking hole 9. The upper die 102 is driven by a forging machine to move towards the lower die 103, and the forging process is completed when the upper and lower dies 103 are combined.
[0021] Preferably, the upper die 102 and the lower die 103 are each provided with a recess on the side surface, and the recess is provided with four heating pipe holes 3, two thermocouple holes 2, and a wiring groove. The mold heating pipe and the thermocouple are respectively fixed in the heating pipe holes 3 and the thermocouple holes 2. The recess is detachably installed with a heating box 6 through a threaded fixing hole, and the outside of the recess is fixed by a heating cover plate.
[0022] Preferably, the upper die 102 and the lower die 103 are each provided with a tooth-shaped lock catch, and the lock catch of the upper die 102 is engaged with the lock catch of the lower die 103.
[0023] Preferably, the first cavity 7 and the second cavity 10 are each provided with a flash groove 8.
[0024] The product forming force is calculated by the FORGE mold flow simulation software, and then the formula is used to calculate whether the mold lock catch structure strength is reasonable. If it is not reasonable, the mold lock catch will be severely worn with the increase of the forging times, and a series of problems such as safety accidents and mold misalignment causing product unqualified will occur. At this time, the original one mold cavity is designed to be centrally or axially symmetrically distributed to two cavities. Because the diameter of the blank 105 required for forging on the structure of one mold with two cavities is larger than that required for the original structure of one mold with one cavity, the product forming force is larger, and one preforming process is needed, so the blank 105 required for the original molding is used along with the two blank 105s. Moreover, the distance between the two cavities is designed according to the mold flow analysis obtained by the FORGE software to avoid the accumulation of flash of the two products after forging, which leads to product scrap.
[0025] The size of the flash groove 8 in the die is reduced according to the results of the mold flow analysis of the FORGE software during design, so as to reduce the size of the die, so that the two cavities are close to the center position of the working surface of the forging machine, so as to avoid the occurrence of the situation of the product size deviation and the like caused by the unbalanced load of the equipment; the bolt fixing hole and the lock catch of the die are designed according to the bolt hole position of the fixing plate of the upper and lower dies 103 and the size of the die, and the bolt with reasonable structural strength is selected to fix the die on the fixing plate of the upper and lower dies 103; combined with the mold flow analysis and the change of the temperature field, the position and the number of the heating pipe are determined, so as to ensure the constant temperature of the die during working.
[0026] When the die structure of the utility model is designed, the original single cavity is distributed into another cavity through central symmetry or axial symmetry, and the structure is characterized by one die with two cavities. The stress conditions of the two cavities are analyzed independently, the directions of the resultant forces of the two cavities in the vertical direction (XY plane) of forging are opposite and consistent in size, and the two resultant forces are offset when the internal force of the die is analyzed as a whole. At this time, the lateral force of the die during forging has been offset. Combined with the mold flow analysis and the change of the temperature field, the position and the number of the heating pipe are determined, so as to ensure the constant temperature of the die during working, and the forming quality and the production stability of the forgings are ensured. When the die cavity structure is designed through the central symmetry or the axial symmetry method, not only the lateral force problem is solved, but also one die with two cavities can obtain two left (right) forgings, or a pair of left and right forgings, which improves the production efficiency in the actual production process.
[0027] The characteristics of the design are as follows: the structure is simple and practical. The problems of the serious wear of the die lock catch, the die misalignment, the safety hidden trouble caused by the insufficient structural strength of the die, the unqualified products and the unstable process quality caused by the lateral force during the forging of the aluminum alloy control arm forging die of the automobile chassis suspension system are solved, the production efficiency and the forging quality are improved, and the cost is reduced.
[0028] It should be understood that the orientations or positional relationships indicated by 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" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.
[0029] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.
[0030] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or communicate with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication or interaction relationship of two elements, unless otherwise specifically defined. 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.
[0031] In the present application, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.
[0032] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.
Claims
1. A hot forging die for an aluminum alloy control arm, comprising a die, divided into an upper die (102) and a lower die (103), characterized in that, The upper mold (102) is fixed on the upper fixing plate (101), and the lower mold (103) is fixed on the lower fixing plate (104). The mold has two sets of cavities, namely the first cavity (7) and the second cavity (10).
2. The hot forging die for an aluminum alloy control arm according to claim 1, characterized in that, The first cavity (7) and the second cavity (10) are centrally symmetrically distributed.
3. The hot forging die for an aluminum alloy control arm according to claim 1, characterized in that, The first cavity (7) and the second cavity (10) are axially symmetrically distributed.
4. The hot forging die for an aluminum alloy control arm according to claim 1, characterized in that, The upper mold (102) and the lower mold (103) are provided with grooves on their sides. Each groove has 4 heating tube holes (3) and 2 thermocouple holes (2) as well as a wire trough. The mold heating tubes and thermocouples are fixed in the heating tube holes (3) and thermocouple holes (2) respectively. A heating box (6) can be detachably installed in the groove through a threaded fixing hole. The outside of the groove is fixed by a heating cover plate.
5. The hot forging die for an aluminum alloy control arm according to claim 1, characterized in that, The upper mold (102) and the lower mold (103) are provided with toothed latches on their mating side edges, and the latches of the upper mold (102) and the lower mold (103) engage with each other.
6. The hot forging die for an aluminum alloy control arm according to claim 1, characterized in that, Both the first cavity (7) and the second cavity (10) are provided with flash grooves (8).