CN108555048B - Extrusion forming method for forged aluminum alloy wheel rim - Google Patents
Extrusion forming method for forged aluminum alloy wheel rim Download PDFInfo
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- CN108555048B CN108555048B CN201810570265.3A CN201810570265A CN108555048B CN 108555048 B CN108555048 B CN 108555048B CN 201810570265 A CN201810570265 A CN 201810570265A CN 108555048 B CN108555048 B CN 108555048B
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- flaring
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 39
- 238000001125 extrusion Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000005242 forging Methods 0.000 claims abstract description 47
- 238000003825 pressing Methods 0.000 claims abstract description 26
- 230000008569 process Effects 0.000 claims abstract description 10
- 230000009471 action Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000004080 punching Methods 0.000 description 5
- 238000009987 spinning Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/14—Making other products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/18—Making uncoated products by impact extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
- B21C35/02—Removing or drawing-off work
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention relates to a method for extrusion forming of a forged aluminum alloy wheel rim. Wherein: when the die is closed, firstly, pressing blocks are pressed firmly to initially forge the blank; and then the flaring positioning block rotates around the pin shaft to be matched with the die under the guidance of the inclined plane at the upper end of the lower die holder. And the flaring block is contacted with the upper end face of the rim of the primary forging blank. After the flaring positioning block is matched, the flaring positioning block does not move downwards any more, but the flaring block continues to move downwards to continuously press the rim outwards until the rim is completely attached to the surfaces of the flaring block and the cavity of the flaring positioning block; and simultaneously, a central hole of the primary forging blank is punched. Thereby extruding the final forging blank. During die opening, firstly, the flaring block is separated from the final forging blank; then the positioning block pulling plate pulls up the flaring positioning block upwards, so that the flaring positioning block rotates around the pin shaft to open the die; then the supporting plate upwards supports the positioning block mounting plate and the flaring positioning block; and then the pressing block is pulled to move upwards, and the whole upper die is completely separated from the final forging blank. And finally, the lower ejector ejects the final forging blank upwards, and the extrusion forming process of the forged aluminum alloy wheel rim is completed.
Description
Technical Field
The invention belongs to the field of nonferrous metal metallurgy and relates to an extrusion forming method for a forged aluminum alloy wheel rim.
Background
The manufacturing process of the automobile aluminum alloy wheel comprises casting, forging, casting spinning and the like. At present, china has become the largest aluminum alloy wheel manufacturing base in the world, and the manufactured aluminum alloy wheel meets domestic requirements and is also exported abroad in large quantity, so that the manufactured aluminum alloy wheel is the first aluminum alloy wheel export country in the world.
However, the manufacturing process level of the aluminum alloy wheel is still different from the world leading level, and although the forged aluminum alloy wheel can be produced, the rim is formed by spinning, defects in the spinning process are easy to remain, the problem of rim cracking and air leakage frequently occurs in the using process of the wheel, and the requirement of a truck or a bus on the high-performance forged aluminum alloy wheel cannot be met.
Therefore, research and development of a method for directly forging and forming a forged aluminum alloy wheel rim are very necessary, so that the quality of the forged aluminum alloy wheel rim is improved, the requirements of trucks or buses on high-performance forged aluminum alloy wheels are met, and the technical level of the aluminum alloy wheel manufacturing industry in China is improved.
By searching, the following related patent documents were found.
1. A method (CN 201610054754.4) for compositely extruding a magnesium alloy hub comprises the steps of movably splicing an upper male die and a female die of a composited extrusion die, prefabricating a barrel-shaped hub, movably arranging the hub between the upper male die and a lower male die and arranging the hub in the female die, movably connecting the lower male die with the female die through a positioning shaft, and fixedly arranging a top shaft at the bottom of the lower male die and movably connecting the lower middle part of the female die. The upper male die and the insert of the bulging die are movably spliced, the hub formed by composite extrusion is movably arranged among the upper male die, the lower male die and the insert, the insert is movably arranged in the die sleeve and is connected with the base plate through a pin shaft, a spring, the lower male die is fixed on the base plate, the push plate is movably arranged in the die holder and is movably connected with the insert through a positioning shaft, and a top shaft is fixedly arranged at the middle part of the bottom of the push plate.
2. An extrusion forming method (CN 200810211760.1) for automobile hub features that the flaring step is to match the upper and lower double convex die structures with female die to form the upper and lower rims and rims by one-step flaring. The female die adopts a split female die to restrict bulging. The flaring procedure adopts a die-free constraint flaring die, and the rim is formed by flaring once when the middle transition of the rim is more gentle. The flaring die mainly comprises an upper male die, a lower male die, a split female die, a female die plate, a fixing plate, a backing plate, an inner ejector rod, an outer ejector rod, a top plate, a large ejector rod, a lower die holder, a limit screw, a spring and a fastening screw; each split female die is arranged in the female die plate through an inclined chute; the concave template is arranged on the lower die seat through a limit screw and a spring, and can move up and down when being stressed; the lower male die is fixed on the lower die holder through a base plate by using a fastening screw; the upper punch is matched with the upper opening part of the split female die to form an upper rim of the rim, and the lower punch is matched with the lower part of the split female die to form a lower rim of the rim and a lower rim of the rim; the inner ejector rod passes through the backing plate, the lower punch and the extrusion piece to be contacted with the top plate and the large ejector rod to form an ejection mechanism of the extrusion piece, and the outer ejector rod passes through the backing plate, the fixing plate and the split female die to be contacted with the top plate and the large ejector rod to be combined with the ejection mechanism of the split female die. The split female die is composed of 4 female die inserts which are respectively connected with the female die plate through inclined sliding grooves, and a female die cavity is formed during die assembly.
3. The forming device comprises an upper template, a male die fixing plate, a pressing plate, a lower template, a female die, a supporting block, a female die base plate, a guide post and a guide sleeve, wherein the upper end of the male die is embedded in the male die fixing plate, the male die fixing plate is fixedly connected with the upper template through screws, the supporting block below the pressing plate is located on the female die base plate, the female die base plate is placed on the lower template, the pressing plate, the supporting block, the female die base plate and the lower template are fixedly connected into a whole through screws, the upper end of the guide post is arranged in the lower part of the guide sleeve, the upper end of the guide sleeve is fixedly connected with the lower end of the upper template, the lower end of the guide post is fixed on the lower template, a die cavity is divided into a left half die and a right half die, and a pin shaft is arranged on an ejector rod.
4. The forming technology and the die (CN 201110148767.5) for the light alloy integral die forging extrusion automobile hub comprise a preformed die and a forming die. The pre-forming die comprises an upper pressure head die core positioned above, a lower pressure head die core positioned below, a female die slide block positioned at the periphery and a female die seat sleeve matched with the female die slide block; the forming die comprises an upper die core positioned below, a lower die core positioned above and more than two forming half positioned at the periphery. The peripheral dimension of the upper pressure head mold core is the outer diameter dimension of the upper end face of the hub, and is provided with a central hole, a banner and all geometric shapes of a connecting outer diameter circumference of the hub; the outer diameter of the upper pressure head mold core is matched with the inner diameter of a female mold cavity formed by a female mold slide block in a manner of being capable of moving up and down. The outer diameter of the lower pressure head mold core is conical horn, the maximum diameter of the lower end part of the lower pressure head mold core is not larger than the diameter of the upper end of the upper pressure head mold core, the lower pressure head mold core is matched with a female mold cavity formed by a female mold slide block, and a allowance of the thickness and the height of a formed part is reserved between the lower pressure head mold core and the female mold cavity; the upper end face of the lower mold core is provided with all geometric shapes and central holes of a hub mounting surface, and an ejection pressure head is arranged in the middle.
Through analysis, the patent content is greatly different from the technical scheme of the patent application.
Disclosure of Invention
The invention aims to solve the problem of rim cracking and air leakage in the use process of the conventional forged aluminum alloy wheel, and provides a method for extrusion forming of the forged aluminum alloy wheel rim. The quality of the forged aluminum alloy wheel rim is effectively improved, and the requirements of trucks or buses on the high-performance forged aluminum alloy wheels are met.
The technical scheme of the invention is as follows:
a method for extruding and shaping the rim of forged aluminium alloy wheel features that the heated blank of forged aluminium alloy wheel is put in lower die holder, and the upper die moves downward and the locating pin falls in locating sleeve for locating and guiding. The whole upper die continues to move downwards, the pressing block is contacted with the primary forging blank, the upper die mounting plate then moves downwards to compress the spring, and the pressing block presses the primary forging blank firmly. The upper die continues to move downwards, 4 flaring locating blocks are contacted with inclined planes at the upper end of the lower die holder, and under the guidance of two sections of inclined planes with different angles at the upper end of the lower die holder, the 4 flaring locating blocks rotate around the pin shaft and gradually die-lock to form a closed rim outer side-shaped cavity. And when the 4 flaring positioning blocks are gradually clamped, the flaring blocks are contacted with the upper end surface of the rim of the primary forging blank, and the flaring blocks continuously press the rim outwards along with the continuous downward movement of the upper die. After the 4 flaring positioning blocks are matched, the flaring blocks do not move downwards any more, but the flaring blocks continue to move downwards and press the rim outwards under the drive of the upper die mounting plate until the rim is completely attached to the surfaces of the flaring blocks and the cavities of the flaring positioning blocks, and the upper die and the lower die are completely matched. When the flaring block extrudes the rim outwards, the upper die mounting plate drives the upper ejector rod to move downwards, the punch is contacted with the center of the primary forging blank, the punch continues to move downwards, and the center hole of the primary forging blank is punched out under the action of the shearing force of the punch and the punching block. And extruding the forged aluminum alloy wheel final forging blank after the rim extrusion forming is completed.
When the die is opened, the upper die mounting plate drives the flaring block to move upwards, and the flaring block is separated from the final forging blank. After the locating block pulling plate is contacted with the 4 flaring locating blocks, the flaring locating blocks start to be pulled upwards, so that the flaring locating blocks rotate around the pin shafts and gradually die-opening is performed. The upper die continues to move upwards, and after the supporting plate is contacted with the positioning block mounting plate, the positioning block mounting plate starts to be lifted upwards, so that 4 flaring positioning blocks are driven to move upwards together. Along with upward movement of the upper die, the spring gradually stretches, and when the upper die mounting plate contacts with the guide rod, the pressing block is pulled to move upwards, the whole upper die is completely separated from the final forging blank, and the whole upper die continues to move upwards, so that die opening is realized.
The lower ejector upwards ejects the ejector plate to drive the ejector rod and the ejector ring to move upwards, so that the final forging blank is ejected, the rim of the final forging blank is higher than the lower die holder, the final forging blank is conveniently taken out, and the extrusion forming process of the rim of the forged aluminum alloy wheel is completed. And transferring the final forging blank into a subsequent process, and finally processing the final forging blank into a forged aluminum alloy wheel finished product through the processes of heat treatment, machining and the like.
The rim extrusion forming die mainly comprises a lower bottom plate, a lower die mounting plate, a supporting plate, a lower die holder mounting plate, a lower die holder, a pressing block, a flaring positioning block, a flaring block, a spring, an upper die mounting plate, an upper top plate, a guide rod, an upper ejector rod pressing plate, a pull rod, a positioning block mounting plate, a supporting plate, a positioning block mounting block, a pin roll, a positioning block pull plate, a positioning pin, a punch, a material jacking ring, a material jacking rod, a positioning sleeve, a punching block, a material jacking plate and a lower material jacking device. When the rim extrusion forming die is closed, the upper die integrally moves downwards, and after the pressing block contacts with the initial forging blank, the pressing block does not move downwards any more; after the flaring positioning block contacts with the inclined plane at the upper end of the lower die holder, the flaring positioning block rotates around the pin shaft under the guidance of two sections of inclined planes with different angles, and gradually dies to form a closed rim outer side-shaped cavity, and the flaring positioning block does not move downwards any more; and when the flaring positioning block is gradually clamped, the flaring block continuously moves downwards to press the rim outwards until the rim is completely attached to the surfaces of the flaring block and the cavity of the flaring positioning block, so that the clamping is realized. When the rim extrusion forming die is opened, the upper die mounting plate drives the flaring block to move upwards, and the flaring block is separated from the finish forging blank; when the positioning block pulling plate is contacted with the flaring positioning block, the flaring positioning block starts to be pulled upwards, so that the flaring positioning block rotates around the pin shaft and gradually opens the die; when the supporting plate is contacted with the positioning block mounting plate, the positioning block mounting plate is lifted upwards, and the flaring positioning block is driven to move upwards together; when the upper die mounting plate is contacted with the guide rod, the pressing block is pulled to move upwards, and the whole upper die is completely separated from the final forging blank, so that die opening is realized.
The rim extrusion forming die supporting plate is fixed in the middle of the pull rod, and the positioning block pull plate is fixed at the lower end of the pull rod. When the die is in the open state, the supporting plate supports the positioning block mounting plate, and the flaring positioning block is hung below the upper die mounting plate through the pull rod; the positioning block pulling plate pulls up the outer supporting table of the flaring positioning block through the pull rod, so that the flaring positioning block is in an open state. When the die is in the die closing state, the flaring positioning block is in the closing state under the action of the inclined plane at the upper end of the lower die holder, the positioning block pulling plate is separated from the flaring positioning block, and the supporting plate is separated from the positioning block mounting plate.
The heating temperature range of the forging blank of the forged aluminum alloy wheel is 400-480 ℃.
The temperature of the final forging blank of the forged aluminum alloy wheel after extrusion forming is more than 350 ℃.
Compared with the prior art, the invention has the following advantages: the invention solves the problem of the existing spinning residual defect of the rim of the forged aluminum alloy wheel, adopts an extrusion forming method to manufacture the rim of the forged aluminum alloy wheel, has fine crystal grains and compact structure in the rim, has reasonable metal streamline, is not easy to crack and leak the rim, and meets the requirement of trucks or buses on the high-performance forged aluminum alloy wheel. Meanwhile, the extrusion forming method of the forged aluminum alloy wheel rim adopted by the invention does not need to modify the existing forging equipment, and has simple and feasible structure and lower capital investment.
Drawings
Fig. 1 is a schematic view of a rim extrusion process and a die thereof according to the present invention.
Fig. 2 is a schematic view of a forged aluminum alloy wheel as-forged blank prior to rim extrusion.
Fig. 3 is a schematic view of a final forged aluminum alloy wheel blank using the forming method of the present invention.
In the figure: 1. the lower bottom plate, 2, lower die mounting plates, 3, a support plate, 4, a lower die holder mounting plate, 5, a lower die holder, 6, a final forging blank, 7, a pressing block, 8, a flaring positioning block, 9, a flaring block, 10, a spring, 11, an upper die mounting plate, 12, an upper top plate, 13, a guide rod, 14, an upper ejector rod, 15, an upper ejector rod pressing plate, 16, a pull rod, 17, a positioning block mounting plate, 18, a supporting plate, 19, a positioning block mounting block, 20, a pin shaft, 21, a positioning block pulling plate, 22, a positioning pin, 23, a punch, 24, a preliminary forging blank, 25, a jacking ring, 26, a jacking rod, 27, a positioning sleeve, 28, a punching block, 29, a jacking plate, 30 and a lower jacking device.
Detailed Description
The following detailed description of the embodiments refers to the accompanying drawings.
Fig. 1 is a schematic diagram of a rim extrusion forming process and a die thereof according to the present invention.
The rim extrusion forming die shown in fig. 1 mainly comprises a lower bottom plate 1, a lower die mounting plate 2, a supporting plate 3, a lower die holder mounting plate 4, a lower die holder 5, a pressing block 7, a flaring positioning block 8, a flaring block 9, a spring 10, an upper die mounting plate 11, an upper top plate 12, a guide rod 13, an upper ejector rod 14, an upper ejector rod pressing plate 15, a pull rod 16, a positioning block mounting plate 17, a supporting plate 18, a positioning block mounting block 19, a pin shaft 20, a positioning block pulling plate 21, a positioning pin 22, a punch 23, a material ejection ring 25, a material ejection rod 26, a positioning sleeve 27, a punching block 28, a material ejection plate 29 and a lower material ejector 30. Wherein the supporting plate 18 is fixed at the middle part of the pull rod 16, and the positioning block pull plate 21 is fixed at the lower end of the pull rod 16. When the die is in the open state, the supporting plate 18 supports the positioning block mounting plate 17, and the flaring positioning block 8 is hung below the upper die mounting plate 11 through the pull rod 16; the positioning block pulling plate 21 pulls up the outer supporting table of the flaring positioning block 8 through the pull rod 16, so that the flaring positioning block 8 is in an open state. When the die is in the die closing state, the flaring positioning block 8 is in the closing state under the action of the inclined plane at the upper end of the lower die holder 5, the positioning block pulling plate 21 is separated from the flaring positioning block 8, and the supporting plate 18 is separated from the positioning block mounting plate 17.
The forging aluminum alloy wheel primary forging blank 24 heated to 400-480 ℃ as shown in fig. 2 is placed into the lower die holder 5, the upper die integrally moves downwards, and the positioning pins 22 fall into the positioning sleeves 27 to perform positioning and guiding functions. The upper die integrally continues to move downwards, the pressing block 7 is contacted with the primary forging blank 24, the upper die mounting plate 11 then moves downwards to compress the spring 10, and the pressing block 7 presses the primary forging blank 24. The upper die continues to move downwards, 4 flaring positioning blocks 8 are contacted with inclined planes at the upper end of the lower die holder 5, and under the guidance of two inclined planes with different angles at the upper end of the lower die holder 5, the 4 flaring positioning blocks 8 rotate around the pin shaft 20 and gradually die to form a closed rim outer side-shaped cavity. While the 4 flaring positioning blocks 8 are gradually clamped, the flaring blocks 9 are contacted with the upper end face of the rim of the primary forging blank 24, and the flaring blocks 9 continuously press the rim outwards along with the continuous downward movement of the upper die. After the 4 flaring positioning blocks 8 are clamped, the flaring blocks 9 do not move downwards any more, but the flaring blocks 9 continue to move downwards and press the rim outwards under the drive of the upper die mounting plate 11 until the rim is completely attached to the surfaces of the flaring blocks 9 and the flaring positioning blocks 8, and the upper die and the lower die are completely clamped. When the flaring block 9 presses the rim outwards, the upper die mounting plate 11 drives the upper ejector rod 14 to move downwards, the punch 23 is contacted with the center of the primary forging blank 24, the punch 23 continues to move downwards, and the center hole of the primary forging blank 24 is punched out under the shearing force of the punch 23 and the punching block 28. The rim extrusion is completed and the forged aluminum alloy wheel finish forge blank 6 is extruded as shown in fig. 3.
Then the upper die mounting plate 11 drives the flaring block 9 to move upwards, and the flaring block 9 is separated from the final forging blank 6. After the positioning block pulling plate 21 is contacted with the 4 flaring positioning blocks 8, the flaring positioning blocks 8 start to be pulled upwards, so that the flaring positioning blocks 8 rotate around the pin shafts 20 and gradually die-open. The upper die continues to move upwards, and after the supporting plate 18 is contacted with the positioning block mounting plate 17, the positioning block mounting plate 17 starts to be lifted upwards, so that the 4 flaring positioning blocks 8 are driven to move upwards together. Along with the upward movement of the upper die, the spring 10 gradually stretches, and after the upper die mounting plate 11 is contacted with the guide rod 13, the pressing block 7 is pulled to move upwards, the whole upper die is completely separated from the final forging blank 6, and the whole upper die continues to move upwards, so that the die opening is realized.
Finally, the lower ejector 30 ejects the ejector plate 29 upwards to drive the ejector rod 26 and the ejector ring 25 to move upwards, so that the final forging blank 6 is ejected, the rim of the final forging blank 6 is higher than the lower die holder 5, the final forging blank 6 is conveniently taken out, and the extrusion forming process of the rim of the forged aluminum alloy wheel is completed. The final forging blank 6 shown in fig. 3 is transferred to the subsequent working procedures, and finally is processed into the forged aluminum alloy wheel finished product through the working procedures of heat treatment, machining and the like.
The technical content that is not described in detail in this embodiment is prior art.
Claims (2)
1. The method adopts a rim extrusion forming die for forging, the rim extrusion forming die mainly comprises a lower die holder, a pressing block, a flaring locating block, a flaring block, a spring, an upper die mounting plate, an upper top plate, a guide rod, a pull rod, a locating block mounting plate, a supporting plate, a locating block mounting block, a pin shaft and a locating block pulling plate, wherein the pull rod is arranged on the upper die mounting plate, the upper die mounting plate is arranged on the upper top plate, the guide rod penetrates through the upper die mounting plate and the bottom end of the guide rod is connected with the pressing block, the spring is sleeved on the guide rod and is arranged in the pressing block, the flaring locating block is arranged on the locating block mounting block through the pin shaft, the locating block mounting block is arranged on the locating block mounting plate, the locating block mounting plate is movably arranged on the pull rod, and the flaring block is arranged on the upper die mounting plate, and is characterized in that: the supporting plate of the rim extrusion forming die is fixed in the middle of the pull rod, and the positioning block pull plate is fixed at the lower end of the pull rod; when the die is closed, the upper die moves downwards integrally, and after the pressing block contacts with the primary forging blank, the pressing block does not move downwards any more; after the flaring positioning block contacts with the inclined plane at the upper end of the lower die holder, the flaring positioning block rotates around the pin shaft to be matched with the die under the guidance of the inclined plane at the upper end of the lower die holder, so that a closed rim outer side cavity is formed, and the flaring positioning block does not move downwards any more; when the flaring positioning block is used for clamping, the flaring block continuously moves downwards to press the rim outwards until the rim is completely attached to the surfaces of the flaring block and the shape cavity of the flaring positioning block, so that the clamping is realized; when the die is opened, the upper die mounting plate drives the flaring block to move upwards, and the flaring block is separated from the final forging blank; when the positioning block pulling plate is contacted with the flaring positioning block, the flaring positioning block starts to be pulled upwards, so that the flaring positioning block rotates around the pin shaft to open the die; when the supporting plate is contacted with the positioning block mounting plate, the positioning block mounting plate is lifted upwards, and the flaring positioning block is driven to move upwards together; when the upper die mounting plate is contacted with the guide rod, the pressing block is pulled to move upwards, and the whole upper die is completely separated from the final forging blank, so that die opening is realized.
2. A forged aluminum alloy wheel rim extrusion process as set forth in claim 1, wherein: when the die is in the open state, the supporting plate supports the positioning block mounting plate, and the flaring positioning block is hung below the upper die mounting plate through the pull rod; the positioning block pulling plate pulls up an outer supporting table of the flaring positioning block through a pull rod, so that the flaring positioning block is in an open state; when the die is in the die closing state, the flaring positioning block is in the closing state under the action of the inclined plane at the upper end of the lower die holder, the positioning block pulling plate is separated from the flaring positioning block, and the supporting plate is separated from the positioning block mounting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810570265.3A CN108555048B (en) | 2018-06-05 | 2018-06-05 | Extrusion forming method for forged aluminum alloy wheel rim |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810570265.3A CN108555048B (en) | 2018-06-05 | 2018-06-05 | Extrusion forming method for forged aluminum alloy wheel rim |
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| Publication Number | Publication Date |
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| CN108555048A CN108555048A (en) | 2018-09-21 |
| CN108555048B true CN108555048B (en) | 2024-04-02 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109158521A (en) * | 2018-10-09 | 2019-01-08 | 江苏珀然轮毂有限公司 | The wheel rim forging equipment of aluminum-alloy wheel |
| CN109773046A (en) * | 2019-01-10 | 2019-05-21 | 昆山鑫达林精密模具有限公司 | Reflectal automotive wheels punching flaring die |
| CN113118331B (en) * | 2019-12-31 | 2022-08-02 | 新昌县宏昇机械有限公司 | Processing technology of liquid storage pipe and collecting pipe connecting seat |
| CN113976802B (en) * | 2021-12-29 | 2022-03-15 | 秦皇岛戴卡兴龙轮毂有限公司 | Forming die and method for forging wheel |
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| JPH02299733A (en) * | 1989-05-15 | 1990-12-12 | Honda Motor Co Ltd | Method and device for manufacturing wheel rim |
| US4985993A (en) * | 1989-05-15 | 1991-01-22 | Honda Giken Kogyo Kabushiki Kaisha | Method for producing wheel rim |
| CN201371216Y (en) * | 2009-03-06 | 2009-12-30 | 河南科技大学 | Flaring die for wheel hub of automobile |
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| CN105397066A (en) * | 2015-12-15 | 2016-03-16 | 中信戴卡股份有限公司 | Liquid forging and molding die for aluminum alloy wheel |
| CN205096463U (en) * | 2015-11-06 | 2016-03-23 | 天津那诺机械制造有限公司 | Mould positioner on liquid forging mould for commercial vehicle |
| CN208800559U (en) * | 2018-06-05 | 2019-04-30 | 秦皇岛戴卡兴龙轮毂有限公司 | A kind of reflectal rim for automobile wheel mold for extruding and forming |
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| CN108555048A (en) | 2018-09-21 |
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