TWI272980B - Method for manufacturing an aluminum alloy wheel rim and products by same - Google Patents

Abstract

Provided are a method for manufacturing an aluminum alloy wheel rim and products by same. The method includes the steps of: (A) placing an un-tempered aluminum magnesium alloy plate over a drawing die of a predetermined shape, using a punch die to deep drawing the aluminum magnesium alloy plate into the drawing die to form an annular wheel rim body; (B) using a tool to enter the drawing die via opposing sides of the punch die so as to punch a hollow structure at the bottom of the wheel rim body where the bottom of the wheel rim body forms an annular flange extending towards a central axis. The aluminum alloy wheel rim includes a first wheel rim body, a second wheel rim body, a wheel disc clamped between the first and second wheel rim bodies, and plural fasteners. The wheel rim bodies are made by using fasteners to affix the wheel disc between the first and second wheel rim bodies by passing through the wheel rim bodies.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a rim body, and more particularly to a method of manufacturing an aluminum alloy rim for use in a wheel of a steam locomotive. [Prior Art] Generally, automobile rims have a variety of manufacturing methods, and the current automobile rims are mostly made of aluminum alloys with light weight and excellent mechanical properties. The manufacturing method covers are divided into three types, namely, die casting method. Casting, multi-piece, and forging—see Figure 加热, which heats the A356 aluminum ingot into an aluminum soup, and then injects the molten aluminum soup into a molding space, in a molding space, by gravity or Low-pressure casting forms a single-piece rim u, and finally the rim 11 is subjected to T6 heat treatment (the alloy is solidified and then subjected to artificial age hardening treatment) and repaired. This method can be mass-produced and its products and styles are diversified, so the selectivity is more and the price is cheaper. The disadvantage of the product is that the strength of the A356 aluminum material is weak. In order to achieve the required strength, only the thickness of the rim is increased, but the weight of the overall rim is also increased. For example, the weight of the rim is 2 inches, and its weight is taken as an example. Up to 18~22 kg. The multi-piece type is further divided into three-piece and two-piece rims. Referring to FIG. 2, the two-piece rim 2 first cuts the A5052 or A5454 aluminum alloy into a long-plate aluminum plate 20, and then the long-plate aluminum plate. 2 The coil is bent into a cylindrical shape, and the opposite ends 201 of the cylindrical aluminum plate are welded together, and then rolled into a ring-shaped rim body by means of a roller or a flow form, and finally a round The disk 21 is welded to the inside of the rim body to complete assembly. Referring to FIG. 3, the three-piece 1272980 rim 3 includes an outer rim body 31, an inner rim body 32, and a wheel disc. The rim bodies 31 and 32 are respectively formed by spinning, and then the wheel 33 is placed. The rim is screwed between the two wheel bodies 31 and 32. The rim formed by the A5052 or A5454 is lighter in weight, taking the rim of 2 inches as an example, and its weight is 615~17 kg. The two or three pieces of Japanese rims are more varied and lighter and more beautiful. However, the rims produced by spinning have longer working hours and higher costs, and the materials used are A5〇52 or A5454.

After the molding, the T6 heat treatment cannot be performed, so the hardness is slightly poor, and the rim is easily deformed in case of bad road conditions. Forging method Referring to Figure 4, the forged aluminum block 4Α is 模6〇61 forged by a multi-engineering to form a one-piece rim 4, which is then heat treated and repaired by Τ6. The rim formed by the forging method has the strongest strength and the lightest weight. For example, the rim of 2 inches is 12 to 14 kilograms, but the production of mussels is relatively high and the cost is also high. It is a premium car model, but the forging process is also relatively rigid, so the changes in style and style are limited. According to the above-mentioned shortcomings of the prior art, a seamless aluminum rim forming method is disclosed in the Chinese Patent Application No. 91 133965. Referring to FIG. 5, the system will utilize a deep drawing. The forming method is a single-piece rim body, and finally can be combined with a wheel disc (not shown) to form a rim. This solution solves the problems that the conventional strength cannot be improved, the cost is high, and the weight is heavy. In the case of tires, even under the same rim diameter specifications, there are several different tire widths. Therefore, there must be a wheel that can match the width of the 27298 〇 ring. However, the method disclosed in this case can only The rim body is molded once to match. For the wheel width specifications of various tires, the method also requires designing several 涑 extension molding dies of different widths to form a single-piece rim body of different widths, which is less adjustable to the width of the rim body. In addition, in order to strengthen the rim and make the rim more able to bear the weight and impact, referring to FIG. 6, the rim or the rim body after forming is generally formed by a curling method to form an inner winding wheel and a rim on the side periphery thereof. 4 Bu because of the above rim

The external force is rolled, so the surface of the material is liable to cause stress damage, which causes damage to the rim and increases the defective rate of production. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a method of manufacturing an aluminum alloy rim body and a product thereof which are simple in construction and easy to manufacture. Another object of the present invention is to provide a method of manufacturing a rim body that is easy to adjust the width of the alloy rim. Another object of the present invention is to provide a method for manufacturing a soft rim. Thus, the method for manufacturing the aluminum alloy rim body of the present invention comprises the following steps: (8) the unrefined _ series alloy The plate is placed on a predetermined molding die, and then an annular rim body is formed in the deep arch mold of the alloy plate by using - Chongshuo. / extraction system (coinciding - the tool is inserted from the opposite side of each punch into the mold, the second: the bottom surface of the Z ring body is punched out - hollow structure, so that the bottom surface of the wheel body is formed - toward - an annular flange extending from the central axis. - 1272980 The alloy rim of the present invention comprises a - rim body, a second rim body clamp, and a wheel between the first and second rim bodies , and a plurality of fixed joints, the first rim system of the Hai is stamped and drawn from the untempered aluminum-magnesium alloy plate, and then punched and formed into a blank piece surrounding a central axis; the second rim The body is stamped and deep drawn by another round-shaped alloy plate, and then punched and formed into a surrounding-central axis blank. The fixing members are respectively locked in the manner of the wheel. ―, between the second wheel body.

Wherein, each rim system is formed by the punching process on the side of the wheel that forms the annular flange extending toward the central axis, and then passes through the through hole so that each annular flange has a plurality of spaced intervals and is parallel to The center and the perforation of the shaft; each of the fastening members, that is, the perforation corresponding to the two annular flanges, is used to lock the wheel, and the foregoing and other technical contents, features and effects of the present invention are A detailed description of a preferred embodiment of the present invention will be apparent. The present invention provides a method for manufacturing an alloyed rim body using the alloy-free rim body assembly ring, and a preferred embodiment of the aluminum alloy wheel numing used for synthesizing a steam locomotive wheel. Wheel ^ r

a younger brother's body 51, one Chu and one recognized m A, one brother, one wheel body 52, one wheeled on the first, second, second wheel body 51, four people's wheel 53, and a plurality of fixed parts 54. The first wheel body 51, 52 is formed by a cylindrical structure of the L1 adjacent to the side of the wheel 53 and is formed into a ring extending toward the central axis L1. 1272980 convex Edge 55. Further, each of the rim bodies 51, 52 further includes a soft rim (S0ft Lip) 5 12 which is inclined at a side opposite to the side of each of the rim bodies 51, 52 and away from the central axis u. . Each of the annular flanges 55 has a plurality of perforations 551 spaced apart from each other and parallel to the central axis L1. Thereby, each of the fixing members 54, that is, the perforations 551 corresponding to the two annular flanges 55, the wheel 53 is locked to the first and second wheel bodies 51, ^

between. The detailed production of the second wheel body 51, 52 will be further described in the following manufacturing method. In order to make the circle, the manufacturing method of the aluminum alloy rim body is formed by drawing. The so-called drawing is the so-called deep drawing in the industry, so the working material deep-extended must take into account that it has sufficient elongation. To avoid cracking of the working material during the process of ==. Therefore, the present invention selects an aluminum-magnesium alloy plate which has not been used as a deep-extension working material. Unregulated means that the raw materials that have not been hardened have been tempered if they have been tempered. ^ ώ / 7 _ ^ ” The relatives of the genus (4) are significantly lower than the deep extensions. A 7 Bu Cheng 丄 丄 丄 采用 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 〜 606 606 606 606 606 606 606 606 606 It is very suitable for the working conditions of the casting. Take the first Shenyang method as an example, as shown in Figure 4 (4) - ^ λ ., 疋 攸 攸 未经 未经 未经 未经 依 依 依 依 依 依The aluminum-magnesia board 50 is cut and cut out. The circular-shaped alloy 50 of the size is placed above and below the predetermined forming mold 6, and the mold is::: 1272980 The structure of the mold, followed by The hollow cylinder 61 is moved from above the drawing die 6 to extend the (four) alloy plate 5 into the human drawing die 6 to open the cylindrical cup (not shown). When the structure above the head 61 conforms to the shape of the upper part of the drawing crucible 6 ^ 2 _ mold ", the finished alloy wheel 2 = ^ type is completed and the preliminary shape is completed. Rim to rim referred to here as the beginning of the River

The side circumference of the so-called cylindrical cup is directed away from eight. The direction of the axis u extends one revolution, and the initial rim 5 is the front type of the rim 512. The process will be further described below. After the hollow punches 61 are pressed into the predetermined positions in the drawing die 6, the respective cutters 62 are fed upward from the opposite sides of the punches 61 into the drawing die; The bottom surface of the object is punched. The purpose of the die cutting is to punch the center of the bottom surface of the cylindrical cup into a circular hollow structure. [Fig. 8 (4), after forming the mold, the 7th wheel body is formed. < The bottom surface has the two-shaped brother-shaped flange 55 toward its central axis L. The ring of the time extension is here to be the brother's 疋 'The second wheel body 52 is made in the same way: the second is exactly the same'. In this embodiment, the second wheel body is... The side circumference, the 彖 formation The rim 511, and the second, "only differ in the depth of the different ^, 52 difference when the rim P and the person I step to form the depth of the rim body (the field wheel body composition material qingcheng _ Complete 'change on the same - pumping mold 6, in other words, second choice" = := _ series alloy plate 5 " can be in the same a mysterious body circle body 5 丨 different second wheel body 52

10 1272980 As shown in Fig. 8(d), referring to Fig. 9 and Fig. 10, after the rim bodies are formed, the initial rims 511 of the rim bodies 51 and 52 can be rolled and shaped as needed. step. As shown in FIG. 9, the step and the step are performed by using a hydraulic roller 7 and a wheel 7 rim forming die 8 having a rim molding space 81, and placing the rim bodies 51, 52 in the wheel. The edge forming mold 8 has its original rim 511 疋 located in the rim molding space 81, and then the hydraulic roller 7 is extended into the rim molding space obliquely #, 丄 ▲ at a molding temperature. 81 is wound around the initial rim 311, and (4) the initial rim 511 fills the rim molding space 81 with a shape, and a soft rim having a thickness thicker than each of the rim bodies 51 and ^ is formed. A 512° thick soft rim 512 is located on the periphery of each of the rim bodies 51, 52 to strengthen the rim bodies 51, 52 so that the combined rim 5 is more resistant to impact 2 and load. Compared with the conventionally produced involute rim rim 2', the above-mentioned (4) styling does not cause damage to the surface of the material due to stress, so that a better production yield can be achieved. As shown in FIG. 8 (4), a plurality of spaced-apart perforations are formed in the annular flanges 55 of the respective rim bodies 51, 52. Then, as shown in FIG. 8 (7), the dental apertures 551 can provide the above-mentioned. The wheel 53 is threaded with a plurality of fasteners μ. According to the description of the month, in the technical means, the first rim body 51 and the first wheel body 52' are formed by using the unregulated 2 Ming dynasty alloy plate 5G in a pumping manner and cooperate with the wheel 53 and the fastening members 54 are combined into a Shaomeng rim 5. Compared with the conventional multi-part spinning method, the forming speed of the deep drawing 1272980 is several times that of the spin forming, so the method is suitable for mass production, and in addition to the demand for hardness, the method is for the rim 5 The process can be continuously solid-melted and T6 heat treated to achieve a Rockwell hardness (HRB) of more than 20%, so the hardness of the rim 5 is better than that of the spin-formed product.

It should be noted that since the rim 5 is composed of the first and second rim bodies 51 and 52, only one of the rims 5 should be adjusted for the width of the rim 5 under the same tire diameter. The change in the process, and then combined with another wheel body can be achieved 'in other words, if you need to reduce the width of the rim 5', as long as the other smaller alloy plate 5 成型 according to the above method to form another - The second rim body 52 having a shallower depth (width) can be combined with the original first rim body 51 to easily achieve the required rim 5 width, and vice versa, so that it is not necessary to redesign Mold. In summary, the manufacturing method and the product of the aluminum alloy rim body of the present invention have the greatest advantage in that, in addition to the conventional advantages, the adjustment of the rim and the 5 ^ degree is more flexible than the conventional one, and The formation of the soft rim 5" can also achieve the effect of reinforcing the rim 5 and obtaining a better production yield, so that the object of the present invention can be achieved. The scope of the present invention is limited to the preferred embodiment of the present invention, and the scope of the present invention can be limited to the field of the invention. The specific changes and modifications are within the scope of the invention patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of one of the conventional rims 12 1272980. FIG. 2 is an exploded perspective view of a conventional two-piece rim; FIG. 3 is a conventional three-piece wheel. FIG. 4 is an exploded perspective view of a conventional wrought rim; FIG. 5 is a schematic flow diagram of a conventional seamless rim forming method, and FIG. 6 is a side view illustrating FIG. 7 is an exploded perspective view of the preferred embodiment of the present invention; FIG. 8 is a perspective view of a preferred embodiment of the present invention; FIG. A schematic view of the manufacture of the soft rim of the body; and FIG. 10 is a side view showing that the initial rim is squeezed to fill the rim molding space to form a soft rim.

13 1272980 [Description of main component symbols] 5...Rim 551...··Perforation 50·····11 Lu 1 糸 alloy plate 6...... ...· extraction die 51 ·."· ...· first Rim body 61 ••... •...hollow punch 511... •...initial rim 62••...·tool 512... •...soft rim 7... ...·hydraulic roller 52....·...·second Rim body 8... •...Flange forming die 53••...··Roller wheel 81·····•...Flange molding space 54••...•...Retaining piece L1••...•...Center axis 55 ••... •...ring flange

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Claims (1)

1272980 X. Patent application scope: h A method for manufacturing an aluminum alloy wheel body, comprising the following steps: (A) placing an untempered aluminum-magnesium alloy plate on a predetermined molding die, Then, a punch is used to deeply extend the aluminum alloy plate into the drawing die to form an annular rim body; and (B) a tool is inserted into the drawing die from the opposite side of each punch. The bottom surface of the %-shaped rim body is punched out with a hollow structure such that the bottom surface of the rim body forms an annular flange extending toward a central axis. _ 2• According to the method for manufacturing the |g alloy wheel body described in the second paragraph of the patent scope, after step (B), the step (c) of including a uniform hole is further included, and the step (c) is attached to the rim A plurality of spaced apart perforations are formed in the annular flange of the body. 3. The method for manufacturing an aluminum alloy rim body according to the scope of the application of the patent application, before step (A), further comprising a shearing step (D), wherein the shearing step is performed by each The aluminum-magnesium alloy plate is cut and cut to a circular aluminum alloy plate of a predetermined size. 4. In accordance with the method for manufacturing an aluminum alloy rim body according to claim 1, in the step (A), the formed rim body forms a direction away from the central axis at a side periphery thereof. The initial rim is extended, and after the step (B), the step (E) of rolling the initial rim is further included. 5. The method of manufacturing an aluminum alloy rim body according to item 4 of the application patent scope, after the step (E), further comprises a step (F) of heat-treating the rim body. 6 · The manufacturing method of the seed alloy rim includes the following steps: (A) placing the two untempered aluminum-magnesium alloy sheets on a predetermined 15 1272980 forming drawing mold, and then using the punch Extending the aluminum alloy plate into the squeezing mold to form an annular rim body respectively; (B) engaging the cutter into the drawing mold from the opposite side of each punch to the two annular rim The bottom surface of the body is punched out to form a hollow structure, so that the bottom surfaces of the two wheel bodies respectively form an annular flange extending toward a central axis; (C) a plurality of spaced perforations are arranged on the annular flange of each wheel body And (D) aligning and arranging the two rim bodies with their annular flanges by means of a plurality of fastening members for locking the corresponding perforations 7 according to the patent scope of claim 6 The manufacturing method of the rim, in the step (A), the formed rim body forms a preliminary rim extending in a direction away from the central axis on the side periphery thereof, and after the step (8), further includes - The step (8) of rolling each of the preliminary rims is performed. 8. An alloy wheel rim comprising: - a first wheel body 'drawn and die cut from an untempered aluminum-magnesium alloy, comprising a bottom surface of the first wheel body and : an annular flange extending from the central axis; - the second rim body is stamped and die-cut by another - unregulated magnesium alloy, including one located in the second rim body and facing An annular flange extending from the central axis; - - a wheel disc is sandwiched between the first and second rim bodies and: a number: the connector 'is one by one, the second and the second rim body between. 々, brother 9· According to the application of patent scope, item 8 of the aluminum alloy, in which each 16 1272980 The annular flange of the wheel body is further provided with a plurality of spaced apart perforations; each of the fastening members is correspondingly pierced by the perforations on the two annular flanges to lock the wheel. 10. The aluminum alloy rim according to claim 8, wherein the first rim body further includes a side of the side of the first rim body and is inclined away from the central axis. Soft rim. 11. The aluminum alloy rim according to claim 10, wherein the second rim body further comprises a side of the side of the second rim body and away from the central axis toward the far side Skewed soft rim. 17