CN110340273A - A kind of forging method of aluminium alloy car control arm - Google Patents
A kind of forging method of aluminium alloy car control arm Download PDFInfo
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- CN110340273A CN110340273A CN201910489254.7A CN201910489254A CN110340273A CN 110340273 A CN110340273 A CN 110340273A CN 201910489254 A CN201910489254 A CN 201910489254A CN 110340273 A CN110340273 A CN 110340273A
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- forging
- kun
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/18—Lubricating, e.g. lubricating tool and workpiece simultaneously
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J3/00—Lubricating during forging or pressing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J9/00—Forging presses
- B21J9/10—Drives for forging presses
- B21J9/20—Control devices specially adapted to forging presses not restricted to one of the preceding subgroups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K7/00—Making railway appurtenances; Making vehicle parts
- B21K7/12—Making railway appurtenances; Making vehicle parts parts for locomotives or vehicles, e.g. frames, underframes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The present invention discloses a kind of forging method of aluminium alloy car control arm, using extruding pole as blank, it is heated rear blank and is successively proceeded through first of Kun forging, second Kun forging, flatten the processing technology of bending and finish forging, using two passage roll forging systems, in the case where meeting reasonable material distribution and material deformation, it can avoid that irregular bending can occur when the regional area generation large deformation of the blank in flattening bending, so that the streamline forming of control arm is reasonable, prevent blank deformation uneven, it is discontented that filling occurs in blank, also production efficiency can be improved, the control arm forming of this method forging processing is good, the defects of unfolded and shrinkage cavity.The present invention is used for the production and processing of aluminium alloy car control arm.
Description
Technical field
The present invention relates to the technical field of forging, in particular to a kind of forging method of aluminium alloy car control arm.
Background technique
Power transmission and director element of the control arm as automotive system, the various power that will act on wheel pass to vehicle body,
Guarantee that wheel is moved by certain track simultaneously.With the development of manufacturing technology and material technology, automobile control arm is gradually by forging
It makes instead of traditional casting.The complete process flow of aluminium alloy irs control arm is generally blanking-rounded corner-Medium frequency induction and adds
Heat-roll forging-flattening bending-reheating-die forging-hot trimming-solid gas coupling, but existing production technology be easy so that plus
There is the defects of folding and shrinkage cavity in the control arm that work goes out, and blank is needed by multiple heating, and processing efficiency is low.
Summary of the invention
The technical problem to be solved by the present invention is a kind of forging method of aluminium alloy car control arm is provided, this method forging
The defects of control arm forming for making processing is good, unfolded and shrinkage cavity.
The solution that the present invention solves its technical problem is:
A kind of forging method of aluminium alloy car control arm, it is characterised in that: the following steps are included:
(a), it uses and squeezes pole as blank；
(b), the blank good to sawing heats, blank heating between 500 DEG C~520 DEG C；
(c), first of Kun forging: using first of Kun forging mould, and first of Kun forging mould includes in setting up and down
First on Kun forging die and the first lower Kun forging die, the blank after heating is sent into first of Kun forging mould, and is had good positioning, first
Upper Kun forging die, the first lower Kun forging die rotate one section of progress Kun forging to blank, and forged by Kun one section of blank is from circular cross-section to ellipse
Deformed cross section shape, to obtain the first passage Kun forging；
(d), second Kun is forged: using second Kun forging mould, the second Kun forging mould includes in setting up and down
Second on Kun forging die and the second lower Kun forging die, the first passage Kun forging around the axis of itself be rotated by 90 ° after be sent into second
It in Kun forging mould, and has good positioning, Kun forging die, the second lower Kun forging die rotation are ellipse to the first passage Kun forging section on second
One section of progress Kun forging, the first passage Kun forging forged by Kun one section from elliptic cross-section to flat shape section deformation, thus
To the second passage Kun forging；
(e), it flattens bending: using Bending Mould, the Bending Mould includes bending lower die and folding set up and down
Curved upper mold broadcasts the second passage Kun forging in Bending Mould, the second passage Kun forging is placed on bending lower die, in bending
Mould moves downward, and the upper surface compression of the second passage Kun forging, lower surface tension, the second passage Kun forging is by local squeezing action
Ultimately form curved workpieces；
(f) finish forging: finish-forging die is used, the finish-forging die includes finish-forging upper mold set up and down and finish-forging
Lower die is sent into curved workpieces in finish-forging die, curved workpieces is put into finish-forging lower die, and have good positioning, finish-forging upper mold is transported downwards
Dynamic, curved workpieces are plastically deformed, and finally obtain control arm.
As a further improvement of the foregoing solution, first of Kun forging mould in step (c) is preheated to 110 DEG C~130
Between DEG C；
It is preheated between 110 DEG C~130 DEG C in the second Kun forging mould in step (d)；
It is preheated between 240 DEG C~260 DEG C in the finish-forging die in step (f).
As a further improvement of the foregoing solution, on first in step (c) under Kun forging die and first Kun forging die with
The speed rotation of 7rad/s~8rad/s carries out Kun forging to blank；
In step (d) second under Kun forging die and second Kun forging die with the speed rotation of 7rad/s~8rad/s to the
A time Kun forging carries out Kun forging.
As a further improvement of the foregoing solution, the rushing with 170mm/s~190mm/s of the bending upper die in step (e)
Pressure speed moves downward.
As a further improvement of the foregoing solution, the finish-forging upper mold in step (f) is with the mould of 220mm/s~240mm/s
Forging speed moves downward.
As a further improvement of the foregoing solution, in step (c) and step (d), first in first of Kun forging die before Kun forging
Tool, second Kun forging mould Kun forging face coat lubricating fluid so that the Kun on first of Kun forging mould and second Kun forging mould
The coefficient of friction in forging face is between 0.6~0.8；
In step (e), the punching press contact surface before punching press first in Bending Mould coats lubricating fluid, so that on Bending Mould
The coefficient of friction of punching press contact surface is between 0.6~0.8；
In step (f), lubricating fluid first is coated in the die forging face of finish-forging die before die forging, so that the die forging face of finish-forging die
Coefficient of friction between 0.2~0.4.
As a further improvement of the foregoing solution, the extruding pole is aluminium alloy.
The beneficial effects of the present invention are: using pole is squeezed as blank, it is heated rear blank and is successively proceeded through the
The processing technology that bending and finish forging were forged, flattened in one of Kun forging, second Kun is meeting material using two passage roll forging systems
In the case that distribution is rationally and material deforms, it can avoid to occur when the regional area generation large deformation of the blank in flattening bending
Irregular bending prevents blank deformation uneven so that the streamline forming of control arm is rationally, and blank filling occurs and is discontented with,
It can be improved production efficiency, the defects of control arm forming of this method forging processing is good, unfolded and shrinkage cavity.
The present invention is used for the production and processing of aluminium alloy car control arm.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described.Obviously, described attached drawing is a part of the embodiments of the present invention, rather than is all implemented
Example, those skilled in the art without creative efforts, can also be obtained according to these attached drawings other designs
Scheme and attached drawing.
Fig. 1 is the schematic diagram of first of Kun forging mould of the embodiment of the present invention；
Fig. 2 is the schematic diagram of the second Kun forging mould of the embodiment of the present invention；
Fig. 3 is the schematic diagram of the Bending Mould of the embodiment of the present invention；
Fig. 4 is the schematic diagram of the finish-forging die of the embodiment of the present invention.
Specific embodiment
It is carried out below with reference to technical effect of the embodiment and attached drawing to design of the invention, specific structure and generation clear
Chu is fully described by, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is this hair
Bright a part of the embodiment, rather than whole embodiments, based on the embodiment of the present invention, those skilled in the art are not being paid
Other embodiments obtained, belong to the scope of protection of the invention under the premise of creative work.In addition, be previously mentioned in text
All connection/connection relationships not singly refer to that component directly connects, and referring to can be added deduct according to specific implementation situation by adding
Few couple auxiliary, Lai Zucheng more preferably coupling structure.Each technical characteristic in the present invention, in the premise of not conflicting conflict
Under can be with combination of interactions.
Referring to figs. 1 to Fig. 4, this is the embodiment of the present invention, specifically:
A kind of forging method of aluminium alloy car control arm, comprising the following steps:
(a), it uses and squeezes pole as blank, according to the design size structure of control arm, carry out sawing to pole is squeezed；
(b), the blank good to sawing heats, blank heating between 500 DEG C~520 DEG C, preferably 510 DEG C；
(c), first of Kun forging: as shown in Figure 1, using first of Kun forging mould 100, first of Kun forging mould
100 include Kun forging die 110 and the first lower Kun forging die 120 on set up and down first, and the blank after heating is sent into first
In Kun forging mould 100, and have good positioning, one section progress Kun of the lower rotation of Kun forging die 120 of Kun forging die 110, first to blank on first
Forging, blank forge by Kun one section from circular cross-section to elliptic cross-section deformation, to obtain the first passage Kun forging；
(d), second Kun is forged: as shown in Fig. 2, using second Kun forging mould 200, the second Kun forging mould
200 include Kun forging die 210 and the second lower Kun forging die 220 on set up and down second, the first passage Kun forging around itself
Axis is sent into second Kun forging mould 200 after being rotated by 90 °, and is had good positioning, the lower Kun forging die 220 of Kun forging die 210, second on second
Rotate be to the first passage Kun forging section ellipse one section of progress Kun forging, the first passage Kun forging forged by Kun one section by ellipse
Circular cross-section is to flat shape section deformation, to obtain the second passage Kun forging；
(e), bending is flattened: as shown in figure 3, the Bending Mould 300 includes presenting to divide into using Bending Mould 300
The bending lower die 310 and bending upper die 320 set are broadcasted the second passage Kun forging in Bending Mould 300, the second passage Kun
Forging is placed on bending lower die 310, and bending upper die 320 moves downward, the upper surface of the second passage Kun forging is pressurized, lower surface by
It draws, the second passage Kun forging is ultimately formed curved workpieces by local squeezing action；
(f) finish forging: as shown in figure 4, using finish-forging die 400, the finish-forging die 400 includes in setting up and down
Finish-forging upper mold 410 and finish-forging lower die 420, curved workpieces be sent into finish-forging die 400 in, curved workpieces are put into finish-forging lower die
420, and have good positioning, finish-forging upper mold 410 moves downward, and curved workpieces are plastically deformed, and finally obtains control arm.
Using extruding pole as blank, while squeezing pole and being generally 6082 aluminium alloys, poor fluidity, forging temperature
Narrow range.When forging temperature is excessively high, forging will generate open grain structure.If forging temperature is too low, forging surface will generate processing
Hardening, since processing hardening area activation energy is larger, the portion crystal sharply grows up to form coarse-grain in subsequent heat treatment process, greatly
It is big to reduce forging performance, so extruding pole, which is heated to 510 DEG C, can form uniform tissue, so that the blank of 6082 aluminium alloys
Forgeability reaches most preferably, is heated rear blank and is successively proceeded through first of Kun forging, second Kun forging, flattens bending and end
The processing technology of forging molding can avoid using two passage roll forging systems in the case where meeting reasonable material distribution and material deformation
Irregular bending can occur when the regional area of blank generates large deformation in flattening bending, so that the streamline of control arm shapes
Rationally, prevent blank deformation uneven, blank filling occurs and is discontented with, and production efficiency, the control of this method forging processing also can be improved
The defects of arm forming processed is good, unfolded and shrinkage cavity.
Passes have a major impact the forming and raising production efficiency that guarantee roll forging part.Passes are excessive, it will
Increase roll forging work step, reduces production efficiency.When passes are less, material unreasonable distribution and material is caused to deform aggravation, drop
Low roller forging quality.Method by taking section to exemplar, present embodiment use two passage roller forging sheet stampings.
In flattening bending, blank is bent into partial plastic forming process, and the shape of Bending Mould 300 is mainly by control arm
Shape determine.
In finish forging, finish-forging is the final shaping stage of forging, belongs to large deformation scope, the shape of finish-forging die 400
Shape is mainly determined by the shape of control arm.
Be further used as preferred embodiment, first of Kun forging mould 100 in step (c) be preheated to 110 DEG C~
Between 130 DEG C, preferably 120 DEG C；
It is preheated between 110 DEG C~130 DEG C in the second Kun forging mould 200 in step (d), preferably 120 DEG C；
It is preheated between 240 DEG C~260 DEG C in the finish-forging die 400 in step (f), preferably 250 DEG C.
First of Kun forging mould 100 and second Kun forging mould 200 are heated to 120 DEG C, and keep temperature, predominantly
When carrying out Kun forging to blank, the temperature of blank is avoided to decline too fast, while finish-forging die 400 is heated to 250 DEG C, also really
The Forming Quality for protecting control arm, avoids the temperature of blank from declining.
It is further used as preferred embodiment, Kun forging die under Kun forging die 110 and first on first in step (c)
120 carry out Kun forging, preferably 7.8rad/s to blank with the speed rotation of 7rad/s~8rad/s；
In step (d) second under Kun forging die 210 and second Kun forging die 220 with the speed rotation of 7.8rad/s to the
One time Kun forging carries out Kun forging, preferably 7.8rad/s.
Forging driving mechanism by Kun drives Kun forging die to rotate with the speed of 8rad/s, and Kun forging can be completed to blank, can be obtained
The second best in quality Kun forging.
It is further used as preferred embodiment, the bending upper die 320 in step (e) is with 170mm/s~190mm/s's
Drawing velocity moves downward, preferably 180mm/s.Drive bending upper die 320 with the punching press of 180mm/s by ram driving mechanism
Speed is mobile, can complete bending to second of Kun forging, can obtain the second best in quality curved workpieces.
It is further used as preferred embodiment, the finish-forging upper mold 410 in step (f) is with 220mm/s~240mm/s's
Die forging speed moves downward, preferably 230mm/s.Curved workpieces are plastically deformed, and mold the second best in quality metal control
Arm.
It is further used as preferred embodiment, in step (c) and step (d), first in first of Kun forging die before Kun forging
Lubricating fluid is coated in the Kun forging face for having 100, second Kun forging mould 200, so that first of Kun forging mould 100 and second Kun forging die
The coefficient of friction in the Kun forging face on tool 200 is between 0.6~0.8, and preferably 0.7；
In step (e), the punching press contact surface before punching press first in Bending Mould 300 coats lubricating fluid, so that Bending Mould
The coefficient of friction of punching press contact surface on 300 is between 0.6~0.8, and preferably 0.7；
In step (f), lubricating fluid first is coated in the die forging face of finish-forging die 400 before die forging, so that finish-forging die 400
The coefficient of friction in die forging face is between 0.2~0.4, and preferably 0.3.
Coefficient of friction generally characterizes the quality of contact surface lubricating condition, has a great impact to the flowing of contact surface metal,
Rollforming and flattening bending belong to partial plastic forming in this forging method, and of less demanding to lubricating condition, coefficient of friction is set
It is set to 0.7.When die-forging forming, material deformation is larger, in order to make material flowing uniformly, prevents folding and fills type and be discontented with, profit
Sliding to answer well, coefficient of friction is set as 0.3.
Better embodiment of the invention is illustrated above, but the present invention is not limited to the embodiment,
Those skilled in the art can also make various equivalent modifications or replacement on the premise of without prejudice to spirit of the invention, this
Equivalent variation or replacement are all included in the scope defined by the claims of the present application a bit.
Claims (7)
1. a kind of forging method of aluminium alloy car control arm, it is characterised in that: the following steps are included:
(a), it uses and squeezes pole as blank；
(b), the blank good to sawing heats, blank heating between 500 DEG C~520 DEG C；
(c), first of Kun forging: using first of Kun forging mould (100), and first of Kun forging mould (100) includes presenting
The blank after heating, is sent into first of Kun forging mould by Kun forging die (110) and first lower Kun forging die (120) on the first of lower setting
(100) it in, and has good positioning, Kun forging die (110), first lower Kun forging die (120) rotate one section of progress Kun forging to blank on first,
Forged by Kun one section of blank is deformed from circular cross-section to elliptic cross-section, to obtain the first passage Kun forging；
(d), second Kun is forged: using second Kun forging mould (200), the second Kun forging mould (200) includes presenting
Kun forging die (210) and second lower Kun forging die (220), the axis the first passage Kun forging around itself rotate on the second of lower setting
It is sent into second Kun forging mould (200), and has good positioning after 90 °, Kun forging die (210), second lower Kun forging die (220) rotation on second
Turn be to the first passage Kun forging section ellipse one section of progress Kun forging, the first passage Kun forging forged by Kun one section by ellipse
Tee section is to flat shape section deformation, to obtain the second passage Kun forging；
(e), it flattens bending: using Bending Mould (300), the Bending Mould (300) includes under bending set up and down
Mould (310) and bending upper die (320) are broadcasted the second passage Kun forging in Bending Mould (300), the second passage Kun forging
Be placed on bending lower die (310), bending upper die (320) moves downward, the upper surface of the second passage Kun forging is pressurized, lower surface by
It draws, the second passage Kun forging is ultimately formed curved workpieces by local squeezing action；
(f) it finish forging: uses finish-forging die (400), the finish-forging die (400) includes finish-forging upper mold set up and down
(410) and finish-forging lower die (420), curved workpieces are sent into finish-forging die (400), curved workpieces are put into finish-forging lower die
(420), it and has good positioning, finish-forging upper mold (410) moves downward, and curved workpieces are plastically deformed, and finally obtain control arm.
2. a kind of forging method of aluminium alloy car control arm according to claim 1, it is characterised in that:
It is preheated between 110 DEG C~130 DEG C in first of Kun forging mould (100) in step (c)；
It is preheated between 110 DEG C~130 DEG C in the second Kun forging mould (200) in step (d)；
It is preheated between 240 DEG C~260 DEG C in the finish-forging die (400) in step (f).
3. a kind of forging method of aluminium alloy car control arm according to claim 1, it is characterised in that:
In step (c) first under Kun forging die (110) and first Kun forging die (120) revolved with the speed of 7rad/s~8rad/s
Turn to carry out Kun forging to blank；
In step (d) second under Kun forging die (210) and second Kun forging die (220) revolved with the speed of 7rad/s~8rad/s
Turn to carry out Kun forging to the first passage Kun forging.
4. a kind of forging method of aluminium alloy car control arm according to claim 1, it is characterised in that:
Bending upper die (320) in step (e) is moved downward with the drawing velocity of 170mm/s~190mm/s.
5. a kind of forging method of aluminium alloy car control arm according to claim 1, it is characterised in that:
Finish-forging upper mold (410) in step (f) is moved downward with the die forging speed of 220mm/s~240mm/s.
6. a kind of forging method of aluminium alloy car control arm according to claim 1, it is characterised in that:
In step (c) and step (d), first in first of Kun forging mould (100), second Kun forging mould (200) before Kun forging
Lubricating fluid is coated in Kun forging face, so that the friction in the Kun forging face on first of Kun forging mould (100) and second Kun forging mould (200)
Coefficient is between 0.6~0.8；
In step (e), lubricating fluid first is coated in the punching press contact surface of Bending Mould (300) before punching press, so that Bending Mould
(300) coefficient of friction of the punching press contact surface on is between 0.6~0.8；
In step (f), lubricating fluid first is coated in the die forging face of finish-forging die (400) before die forging, so that finish-forging die (400)
The coefficient of friction in die forging face is between 0.2~0.4.
7. a kind of forging method of aluminium alloy car control arm according to claim 1, it is characterised in that: the extruding
Pole is 6082 aluminium alloys.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910489254.7A CN110340273A (en) | 2019-06-06 | 2019-06-06 | A kind of forging method of aluminium alloy car control arm |
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| CN201910489254.7A CN110340273A (en) | 2019-06-06 | 2019-06-06 | A kind of forging method of aluminium alloy car control arm |
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| CN112387913A (en) * | 2020-10-23 | 2021-02-23 | 无锡航亚科技股份有限公司 | Upsetting die for forging blank of hip joint handle forging and blank manufacturing method thereof |
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| CN114101557A (en) * | 2021-11-22 | 2022-03-01 | 长春市吉通凯撒铝业有限责任公司 | Forging method of aluminum alloy steering knuckle |
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| CN113305262A (en) * | 2021-06-30 | 2021-08-27 | 重庆凯斯瑞机电设备有限公司 | High-strength one-bridge swing arm forging process |
| CN114101557A (en) * | 2021-11-22 | 2022-03-01 | 长春市吉通凯撒铝业有限责任公司 | Forging method of aluminum alloy steering knuckle |
| CN114101557B (en) * | 2021-11-22 | 2023-08-15 | 长春市吉通凯撒铝业有限责任公司 | Forging method of aluminum alloy steering knuckle |
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