CN1221343C - Method for manufacturing car alloy wheel - Google Patents
Method for manufacturing car alloy wheel Download PDFInfo
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- CN1221343C CN1221343C CN 02141029 CN02141029A CN1221343C CN 1221343 C CN1221343 C CN 1221343C CN 02141029 CN02141029 CN 02141029 CN 02141029 A CN02141029 A CN 02141029A CN 1221343 C CN1221343 C CN 1221343C
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- center portion
- forming
- drop center
- finished product
- wheel
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Abstract
The present invention relates to a method for manufacturing an alloy wheel for automobiles. The wheel is composed of a wheel rim part (16) forming an uneven part (14), and a disk (18) combined with the interior of the wheel rim part (16) from a side (10) to the center (12) of stairs of a descending table. The method for manufacturing an alloy wheel for automobiles comprises: a wheel rim blank is forged, and a cups-shaped primarily-processed finished product (28) is manufactured; the primarily-processed finished product (28) is formed in a flowing mode in order to manufacture a no-suture pipe (20); the no-suture pipe (20) is cut off so as to manufacture a unit pipe (21); the unit pipe (21) is processed in a roller forming mode for the first time so as to form a preformed unit pipe (21'); the preformed unit pipe (21') is processed in a roller forming mode for the second time so as to form the wheel rim part (16) in an integral shape, and welding tails are welded by laser beams after the wheel rim part (16) and the disk (18) are contracted and recessed.
Description
Technical field
The present invention relates to a kind of automobile manufacture method, specifically, relate to a kind of drop center portion and be incorporated into automobile that the plectane of this drop center portion inside constitutes manufacture method with alloy wheel with alloy wheel.
Automobile needs high rigidity and light weight shape with alloy wheel generally speaking, and therefore used material all is the aluminum or aluminum alloy material, and requires drop center portion must have careful tissue.From such viewpoint, wheel rim (or drum) portion is an automobile with part and parcel very in the manufacturing of alloy wheel.
Background technology
In the drop center portion manufacture method of original alloying wheel, such as there are wheel rim and plectane all to fuse the method for forging, the continuous forging method that the disc blank is forged is step by step also arranged.But the fusion forging method needs the fusion forging machine of labyrinth, and it has the shortcoming of work flow complexity, the problem of the drop center portion thickness of very difficult in addition in addition the suitableeest rigidity of decision and lightweight scope.The shortcoming of the continuous forging method that the disc blank forges step by step is, it is very big to make in the process of disc blank raw-material waste, and such disc blank forging becomes the process of tubular drop center portion too complicated.
Especially making automobile based on aluminum pipe with in the drop center portion manufacture process of alloy wheel, pressing before and after the general using, but external diameter 400 ∽ 700mm, what use in the production of the large-scale pipe of thickness 3.5 ∽ 4.5mm is large-scale stamping machine, and its yield is not fine and production cost also is enhanced, so economy descends greatly.Except the pressing of front and back, go back the working system that handlebar sheet material stretches, but because the loss of sheet material price height and material is also a lot, so its economy also descends.Also have to be exactly sheet material is rolled into the arc welding of drum shape, but to cause hardness to descend because of the defective of welding position when taking this method, there is gas leak phenomenon in past contact automobile is finished with alloy wheel after.
Also have aluminum pipe to be configured as in the method for automobile with the drop center portion shape of alloy wheel, what the most generally use is the method for stretching punching press.This method is the shape of plural small-sized cylinder according to drop center portion, the forming process of passing through axle top in turn.The speed of production of this method be decided by the to be shaped speed of whole wheel rim length, so its pace considers the deflection of blank and determines, so speed of production is very slow generally speaking.And the motion of cylinder is controlled in the radial direction and the length direction of pipe, so must have control device, is exactly shortcomings such as working condition complexity in addition in addition.In addition, the plectane that automobile is made in addition of welding on the drop center portion of alloy wheel, this situation is mainly used TIG or MIG electric soldering method because consider economic problems, and this method is because the high temperature that is taken place during electric welding changes the size of product, operation is low, also can stay something lost problem after the electric welding.Because there are these problems, when said method is used to make alloy wheel, gains in weight because of considering security, and need the follow-up repairing work of electric welding because product size changes.The common speed of production of this method is slow, and aspects such as production efficiency and producing cost all need to improve.
Summary of the invention
Main purpose of the present invention is in order to solve the aforementioned problems in the prior, its provide a kind of from the limit to decline step center till, form the drop center portion of jog and be incorporated into automobile that the plectane of this drop center portion inside constitutes manufacture method with alloy wheel.
Another object of the present invention provides obvious shortening flow process number, and oversimplifies the making utensil that is used in flow process, therefore obviously increases the manufacture method of the automobile of production efficiency and yield with alloy wheel compared with additive method.
The 3rd purpose of the present invention is to utilize the flowability of the metal structure that blank itself has, and makes automobile have the suitableeest thickness, high rigidity, high-quality no suture pipe with the drop center portion of alloy wheel.The 4th purpose of the present invention is the doffer that utilizes control range less, with the calendering flow process drop center portion that is shaped between high speed cold.
The 5th purpose of the present invention is not have change in size, do not need to improve under the situation of flow process, and plectane is welded in drop center portion.
Above-mentioned purpose of the present invention realizes the manufacturing of automobile with alloy wheel by following several steps: the first step is to forge the roughing finished product that the wheel rim blank is made cup-shaped; Second step was flow forming roughing finished product in order to make no suture pipe; The 3rd step was the no suture control of a cut-out office pipe; The 4th step was the 1st drum forming of unit tube and shaping preliminary forming unit tube; The 5th step was that the preliminary forming unit tube carries out drum forming the 2nd time, obtained the drop center portion of complete shape thus, and systolic depression drop center portion and plectane, and was welding tail with carrying out LASER BEAM WELDING.
According to an aspect of the present invention, it provides the manufacture method of a kind of automobile with alloy wheel, this wheel is made up of drop center portion that forms jog till from the limit to decline step center and the plectane that is incorporated into this drop center portion inside, and its manufacture method comprises following step: the roughing finished product that forges wheel rim blank making cup-shaped; The flow forming roughing finished product in order to make no suture pipe; Cut off no suture pipe manufacturer unit tube; Unit tube carries out drum forming and the shaping preliminary forming unit tube first time; The preliminary forming unit tube carries out for the second time drum forming and the drop center portion of shaping completeness shape and the step of above-mentioned drop center portion and plectane combination.
Description of drawings
Fig. 1 is the manufacturing process brief introduction figure that automobile is used alloy wheel among the present invention.
Fig. 2 is a sectional view of using alloy wheel according to the automobile that manufacture method of the present invention is made.
Fig. 3 makes the procedure declaration figure of automobile with alloy wheel according to manufacture method of the present invention.
Fig. 4 is that the continuous casting of metal plate obtains forging blank for the shaping of wheel rim, forges processing, thereby makes the forging flow chart illustration of roughing finished product.
Fig. 5 is the roughing finished product of making through forging flow process, carries out flow forming and makes the flow forming procedure declaration figure of no suture pipe.
Fig. 6 and Fig. 7 are the schematic diagrames that shows the wheel rim forming process.
Fig. 8 is after plectane is welded in the wheel rim that has been shaped, finishes the schematic diagram that automobile is made of alloy wheel.
The specific embodiment
With the accompanying drawing is example, describes the present invention in detail.In the accompanying drawing, 16 expression drop center portion; 18 expression plectanes; The no suture pipe of 20 expressions; 21 representation unit pipes; 21 ' expression preliminary forming unit tube; Punching press is forged in 26 expressions; 28 expression roughing finished products; 30 expression flow formings; 38 expression calendering cylinders; 40 expression drum formings; 48 expressions the 1st cylinder; 50 expressions the 2nd cylinder
The automobile alloy wheel of making according to the manufacture method among the present invention is, as shown in Figure 2, from limit 10 to decline step center 12 till, form the drop center portion 16 of jog 14 and be incorporated into that the plectane 18 of these drop center portion 16 inside constitutes.At first make drop center portion 16 of alloy wheel in order to make such automobile, and the plectane 18 of 16 li other making of welding of drop center portion.What Fig. 1 was shown is exactly these a series of technical process.
The making of drop center portion 16 forms by following steps.The firstth, make the wheel rim forming step that the blank be used in drop center portion does not have the step of suture pipe and the no suture pipe made comes calendaring molding according to the shape of drop center portion 16.Describe manufacturing step, wheel rim forming step and the above-mentioned drop center portion and the plectane welding step of no suture pipe of the present invention below in detail.
According to automobile of the present invention with the manufacturing of the manufacture method of alloy wheel from the flow forming pipe that is used for alloy wheel.Generally speaking, the purpose of making the flow forming pipe that is used for alloy wheel is, in order to obtain being used in the no suture pipe 20 (Fig. 3 b) of drop center portion 16.
The following describes the manufacturing of no suture pipe 20: at first the metallic plate of continuous casting is cut off with the circular saw machine, in low frequency guiding smelting furnace, heat then, in soaking pit, make the heating blank become impartial forging temperature afterwards with forging temperature.Forge the blank (Fig. 4) that has heated in order to forge in the forging punching press 26 that punch die 22 and punch press 24 constitute then.The blank that will heat behind the brushing lubricant on forging punch die 22 and punch press 24 is encased in the punch die 22, regulate the oil pressure that forges punching press 26 with suitable pressure, after additional earlier for the first time the forging, completion is for the second time forged and cup-shaped forged article--the roughing finished product 28 of making shown in Fig. 3 (a).
Roughing finished product 28 by above-mentioned forging step manufacturing, the suitableeest diameter of shaping drop center portion 16 after having, also have and to make the suitableeest size that thickness is the no suture pipe 20 of 3.5 ~ 4.5mm, carry out Precision Machining with the flow forming machine afterwards, the no suture pipe of final manufacturing.Demonstrated flow forming machine 30 among Fig. 5.
Flow forming does not have the flow forming machine 30 of suture pipe 2 by forming with lower member: secure bond is connected banishing device 36 that the soaking pit 34, spindle 35 of axle 32, the no suture pipe 20 that finishes of being shaped withdraw from from axle 32 with the axle 32 of roughing finished product 28, for apotting spindle 32 centers and needs roll according to the length direction flow forming in order to make roughing finished product 28, around axle 32, arrange at interval, but can not come 3 calendering cylinders 38 (can only show two among Fig. 5) on the concentric circles with 120 °.In the flow forming machine 30 of Fig. 5, can see almost completed no suture pipe 20.
As mentioned above, the flow forming step of no suture pipe 20 is applicable in the wheel rim production of automobile with two parts method of the lightweight model of alloy wheel, reduce significantly compared with original wrought alloy wheel funds in need, and can produce and keep high rigidity and high-quality no suture pipe.
The internal diameter that does not particularly have suture pipe 20 is that the external diameter with the axle 32 of flow forming machine 30 decides, and when therefore making the no suture pipe of same internal diameter, a position that only needs to adjust calendering cylinder 38 can change its thickness.
The no suture duct ligation crystal grain made from flow shaping method is fine, the surface smoothness beauty, thus the engineering properties after the heat treatment-as draw very good (AA6061-T6 blank, hot strength 32kgf/mm such as Zhang Qiangdu, percentage elongation
2, percentage elongation is more than 12%).As mentioned above, make in equipment worker difference and cylinder worker difference according to no suture pipe 20 its internal diameters of the inventive method manufacturing and the accuracy of external diameter, therefore compared with being applicable to that diameter is that other its accuracy of worker's method of large-scale pipe manufacturer of 400 ∽ 700mm are higher, has the accuracy of 0.05 ∽ 0.1mm to external diameter.
By the no suture pipe 20 that the manufacturing step of above-mentioned no suture pipe is made, be cut to be fit to unit length that drop center portion 16 is shaped after, be configured as drop center portion 16 in drum forming machine (roll forming M/C) lining.Such drum forming machine 40 is presented among Fig. 6 and Fig. 7.
As mentioned above, no suture pipe 20 is cut into the unit length (Fig. 3 b) that is suitable for drop center portion 16.The unit tube 21 that cuts off inserts and is incorporated into and is fixed on drum forming machine 40 spindles, forms 44 li of the axles of drop center portion shape, and its position is fixed by tailstock 46.Spindle revolution in this state, first cylinder 48 advances toward the diametric(al) of unit tube 21, makes this unit tube 21 be configured as the shape that approaches final drop center portion 16, makes preliminary forming unit tube 21 ' thus.In this way utilize the reason of first cylinder, 48 preliminary forming unit tubes 21 ' to be, first cylinder 48 like this moves to the diametric(al) of blank, if when being configured as, man-hour can occur surpassing in advance because of adding that the determined deflection of blank breaks blank or internal flaw takes place with the same shape of wheel rim.First cylinder 48 moves to the diametric(al) of blank, tubular blank quickly preliminary forming be the wheel rim shape, this can make shaping be configured as curve slowly, so processing capacity equal distribution when being shaped.
As mentioned above, utilize after first cylinder, the 48 preliminary forming unit tubes 21 ', first cylinder 48 retreats, and second tin roller 50 advances toward the diametric(al) of blank.Second tin roller 50 can move along the diametric(al) and the length direction of blank as mentioned above, forms the drop center portion 16 of jog 14 till making the preliminary forming unit tube 21 ' with slow curved profile be configured as from limit 10 to decline step center 12.
Welding is welded in plectane 18 on the wheel rim 16 with laser welding method in the present invention with the plectane 18 that usual way is shaped in addition on the final drop center portion 16 that is shaped.The method of laser welding that uses among the present invention is to replace the TIG or the MIG electric soldering method that in the past used, and heated rapidly the part when characteristics of this method of laser welding were welding, so weld interval is very short.The cooling velocity of weld part is very fast, does not therefore have change in size after the welding, and especially weld strength is more outstanding compared with original TIG or MIG method, also bubble phenomenon can not occur during welding, can improve weld strength.
In the present invention, drop center portion 16 and plectane 18 carry out systolic depression, so that it is automatically fed into the welding tail, utilize 6KW LASER BEAM WELDING device here, and it meets the characteristic of wheel, drop center portion 16 is moved with the cylinder direction, to finish welding in the shortest time.
As mentioned above, the method for drop center portion 16 and plectane 18 usefulness laser beams welding can be shortened weld interval like this, only heats the part during welding and does not have change in size, does not also need the repairing work that adds.Especially there is not the bubble phenomenon that occurs on the electric soldering methods such as TIG or MIG, so weld strength is good and can reduce the weight of product.Aspect production efficiency, when welding 17 inches the alloy wheel of wheel, diameter 450mm, can finish with interior at 30 seconds, this enough shows the production efficiency that it is good.
As mentioned above, the present invention has obviously shortened the number of technological process, and the making utensil that is used for flow process is very simple, so this automobile has obviously increased production efficiency and yield with the manufacture method of alloy wheel than other worker's methods.Especially the present invention utilizes the flowability of the metal structure that blank itself has, make no suture pipe with flow shaping method, therefore the caliber and the thickness of pipe can be adjusted arbitrarily, also can keep high rigidity and high-quality, with the little cylinder of control range, calendering step between the drop center portion high speed cold is shaped, the simplification that thus can the engineering manufacture process obtains simplifying and therefore and the thing followed and therefore improved productivity production efficiency upwards and also reduced percent defective; Use the LASER BEAM WELDING plectane and size constancy in the drop center portion inside, thereby also reached the effect that does not need repairing work.
In addition, automobile of the present invention is basic blank with in the manufacture method of alloy wheel with the metallic plate that casts continuously, is the method on basis compared with original employing sheet material or circular plate type blank, more effectively reduced the generation of waste material, and the buying aspect of basic blank is also highly beneficial.
Claims (5)
1. an automobile is with the manufacture method of alloy wheel, this wheel is formed by forming the drop center portion (16) of jog (14) till from limit (10) to decline step center (12) and being incorporated into the inner plectane (18) of this drop center portion (16), and its manufacture method comprises following step: the roughing finished product (28) that forges wheel rim blank making cup-shaped; The flow forming roughing finished product (28) in order to make no suture pipe (20); Cut off no suture pipe (20) manufacturer pipe (21); Unit tube (21) carries out drum forming and shaping preliminary forming unit tube (the 21 ') first time; Preliminary forming unit tube (21 ') carries out for the second time drum forming and the drop center portion (16) of shaping completeness shape and the step of above-mentioned drop center portion (16) and plectane (18) combination.
2. the automobile as claimed in claim 1 manufacture method of alloy wheel is characterized in that:
Forge the wheel rim blank and make cup-shaped roughing finished product (28) step and comprise: cut off the metallic plate of continuous casting earlier,, do earlier afterwards to replenish and forge, then doing completion and forging then with the forging temperature heating of equalization.
3. the automobile as claimed in claim 1 manufacture method of alloy wheel is characterized in that:
Two steps of flow forming roughing finished product (28): the first, roughing finished product (28) is fixed on axle (32) and goes up rotating step; Second, utilize axle (32) on every side with 120 ° be spaced but can be placed on the same concentric circles 3 calendering cylinders (38), the direction of principal axis of described three calendering cylinders (38) from the peripheral direction of roughing finished product (28) to axle (32) pressurizeed, and calendering cylinder (38) advances with the length direction of setting speed toward axle (32), and this flow forming can reduce thickness to roughing finished product (28) in a continuous manner in all directions.
4. the automobile as claimed in claim 1 manufacture method of alloy wheel is characterized in that:
For the first time drum forming and for the second time cylinder on drum forming machine (40), carry out drum forming and shaping preliminary forming unit tube (the 21 ') first time with first cylinder (48), carry out drum forming for the second time and cold forming process of wheel rim of the drop center portion (16) of shaping completeness shape with second tin roller (50), wherein, drum forming machine (40) has first cylinder (48) and second tin roller (50), and the effect of first cylinder (48) is through the drum forming and the unit tube (21) of drum forming for the first time for the second time, only the diametric(al) toward the blank that is formed moves, and the effect of second tin roller (50) is to move with diametric(al) and length direction.
5. the automobile as claimed in claim 1 manufacture method of alloy wheel is characterized in that:
The combination of drop center portion (16) and plectane (18), it comprise make drop center portion (16) and plectane (18) systolic depression after, the welding tail carry out LASER BEAM WELDING.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02141029 CN1221343C (en) | 2002-07-11 | 2002-07-11 | Method for manufacturing car alloy wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02141029 CN1221343C (en) | 2002-07-11 | 2002-07-11 | Method for manufacturing car alloy wheel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1467047A CN1467047A (en) | 2004-01-14 |
| CN1221343C true CN1221343C (en) | 2005-10-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02141029 Expired - Fee Related CN1221343C (en) | 2002-07-11 | 2002-07-11 | Method for manufacturing car alloy wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1221343C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104097036A (en) * | 2014-07-28 | 2014-10-15 | 杨炳忠 | Weldless steel rim processing technology |
| CN113976811A (en) * | 2021-12-16 | 2022-01-28 | 河南省矿山起重机有限公司 | Forging production process for large-diameter double-edge wheel of crane |
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2002
- 2002-07-11 CN CN 02141029 patent/CN1221343C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1467047A (en) | 2004-01-14 |
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| C06 | Publication | ||
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Effective date of registration: 20090522 Address after: Gyeonggi Do, South Korea Co-patentee after: DK International Limited Patentee after: White and fragrant Address before: Gyeonggi Do, South Korea Co-patentee before: Ai Ai World Co. Ltd. Patentee before: White and fragrant |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051005 Termination date: 20170711 |