CN107303597B - Rear axle aluminum alloy control arm forming device and manufacturing process - Google Patents
Rear axle aluminum alloy control arm forming device and manufacturing process Download PDFInfo
- Publication number
- CN107303597B CN107303597B CN201611080934.6A CN201611080934A CN107303597B CN 107303597 B CN107303597 B CN 107303597B CN 201611080934 A CN201611080934 A CN 201611080934A CN 107303597 B CN107303597 B CN 107303597B
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- pressing mold
- rear axle
- control arm
- aluminum alloy
- alloy control
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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
- B21D53/00—Making other particular articles
- B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
-
- 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
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
Abstract
The object of the present invention is to provide a kind of rear axle aluminum alloy control arm forming device and manufacturing process, the side excessive deformation that rear axle aluminum alloy control arm generates protrusion can be limited, and simplifies manufacturing process.Rear axle aluminum alloy control arm forming device includes pedestal, top plate, supporting mechanism, the first pressing mold, the second pressing mold and third pressing mold；The two sides of pedestal are provided with supporting mechanism, top plate are provided with above supporting mechanism, top plate is across the simultaneously supported body support on supporting mechanism；First pressing mold and the second pressing mold are arranged along first direction in pedestal two sides, configured ends are fixedly installed between the first pressing mold and the second pressing mold, first pressing mold and the second pressing mold can be close to each other in a first direction, to realize the extruding to configured ends, and configured ends made to generate protrusion towards the side of top plate；Third pressing mold is fixed in the middle part of top plate towards the side of pedestal, and third pressing mold can apply pressure with projection contacts and to protrusion.
Description
Technical field
The present invention relates to automobile manufacturing field, more particularly, to a kind of rear axle aluminum alloy control arm forming device and at
Shape method.
Background technique
In automobile manufacturing field, with automotive light weight technology technology development and its application in terms of chassis part, after
The trend that bridge aluminum alloy control arm class part substitutes traditional steel part is increasingly significant.
Currently, due to aluminum alloy piping welding higher cost, rear axle aluminum alloy control arm manufacturing process by steel plate punched weld by
Gradually it is changed into aluminum alloy extrusion section bar fracture, bending, partial plastic forming, edge-cutting and hole-punching and shaping etc..Partial plastic forming is to improve
Product local strength simultaneously meets Product Assembly size, is molded using stamping equipment to reach processing hardening and preforming.
Automotive rear axle aluminum alloy control arm is during processing and manufacturing, since partial plastic forming portion structure shape is more multiple
Miscellaneous, local deformation amount is big, easily occurs the defect of following type in cold forming process: cracking deforms uneven, edge recess
Deng.Therefore it also needs to increase local shaping procedure.Product is during processing and manufacturing, process-intensive.
Summary of the invention
The purpose of the present invention is to provide a kind of rear axle aluminum alloy control arm forming device, the rear axle aluminum alloy control arm
Forming device can be while carrying out the extruding on first direction to configured ends, moreover it is possible to squeeze the protrusion of generation, no
Only limit the side excessive deformation that rear axle aluminum alloy control arm generates protrusion, it is thus also avoided that in the prior art to configured ends
The additional local trimming for being directed to protrusion together after the extruding of first direction is carried out, to simplify manufacture work
Skill.
The object of the invention is also to provide a kind of manufacturing process, the manufacturing process can limit the control of rear axle aluminium alloy
Arm generates the side excessive deformation of protrusion, and has the advantages that concise in technology.
For the rear axle aluminum alloy control arm forming device for realizing the purpose, for the rear axle aluminum alloy control arm
Configured ends carry out partial plastic forming processing, and the configured ends are internally provided with plug, the rear axle aluminum alloy control arm forming device
Including pedestal, top plate, supporting mechanism, the first pressing mold, the second pressing mold and third pressing mold；
The two sides of the pedestal are provided with the supporting mechanism, are provided with the top plate above the supporting mechanism, described
Top plate is supported across on the supporting mechanism and by the supporting mechanism；
First pressing mold and second pressing mold are arranged along first direction in the pedestal two sides, and the configured ends are fixed
It is set between first pressing mold and second pressing mold, first pressing mold and second pressing mold can be described first
It is close to each other on direction, to realize the extruding to the configured ends, and generate the configured ends towards the side of the top plate
Protrusion；
The third pressing mold includes the first side mode, the second side mode and middle mould, and the middle mould is fixed in the top plate
Portion is towards the side of the pedestal；First side mode and second side mode are separately positioned on the two sides of the middle mould, and
It is oppositely arranged respectively with first pressing mold and second pressing mold；
The third pressing mold, which moves downward, enables to first side mode and second side mode respectively with described first
Pressing mold and second pressing mold are in contact, and can push first pressing mold and second pressing mold in said first direction
It is close to each other, to squeeze the configured ends and form the protrusion；
The middle mould can apply pressure with the projection contacts and to the protrusion.
The rear axle aluminum alloy control arm forming device, further feature are the rear axle aluminum alloy control arms
Forming device further includes power plant module, and the power plant module is connect with first pressing mold and second pressing mold respectively, described
Power plant module can drive first pressing mold and second pressing mold close to each other in said first direction.
The rear axle aluminum alloy control arm forming device, further feature are that the supporting mechanism is support gas
Cylinder, the support cylinder can drive the third pressing mold towards the forming end motion.
The rear axle aluminum alloy control arm forming device, further feature are that the power plant module includes first
Cylinder and the second cylinder, first cylinder are connect with first pressing mold, and second cylinder is connect with second pressing mold.
The rear axle aluminum alloy control arm forming device, further feature are the rear axle aluminum alloy control arms
Forming device further includes convex block, and the convex block is fixed between first pressing mold and second pressing mold, the forming
End is set to above the convex block, and the convex block is used for the generation close to each other to first pressing mold and second pressing mold and limits
Position prevents first pressing mold and second pressing mold from generating excessive compression to the configured ends.
The rear axle aluminum alloy control arm forming device, further feature are that the first direction is level side
To.
The rear axle aluminum alloy control arm forming device, further feature are that the direction of the pressure is vertical
Direction.
A kind of manufacturing process, for the forming of rear axle aluminum alloy control arm, the manufacturing process includes:
A. fracture processing is carried out to annealed state aluminum alloy extrusion section bar, to obtain the aluminum alloy extrusion section bar of specific dimensions；
B. pre-treatment is carried out to the aluminum alloy extrusion section bar of specific dimensions, to obtain rear axle aluminum alloy control arm master
Body；The pre-treatment includes bending operation and trimming process；
C. plug is set inside the configured ends of the rear axle aluminum alloy control arm main body, uses rear axle aluminium as described above
Alloy control arm forming device carries out partial plastic forming processing to the configured ends of the rear axle aluminum alloy control arm main body；The part
Forming is handled
C01. the configured ends of the rear axle aluminum alloy control arm are fixedly installed between the first pressing mold and the second pressing mold；
C02. make third pressing mold towards the forming end motion, to drive first side mode and second side mode to distinguish
It is in contact with first pressing mold and second pressing mold, and pushes first pressing mold and second pressing mold described first
It is close to each other on direction, to squeeze the configured ends and generate protrusion towards the side of top plate in the configured ends；
C03. continue to make the third pressing mold towards the forming end motion, to drive the third pressing mold and the protrusion
It contacts and pressure is applied to the protrusion；
D. to by partial plastic forming processing the rear axle aluminum alloy control arm main body carry out hole machined, with obtain it is described after
Bridge aluminum alloy control arm.
The manufacturing process, further feature are that the first direction is horizontal direction.
The manufacturing process, further feature are that the direction of the pressure is vertical direction.
The positive effect of the present invention is that: rear axle aluminum alloy control arm forming device provided by the invention, it can not only
Extrusion molding is carried out to the configured ends of rear axle aluminum alloy control arm in a first direction, additionally it is possible to generating in extrusion process
Protrusion apply pressure, thus be effectively prevented rear axle aluminum alloy control arm generate protrusion side excessive deformation.In addition, third
The pushing of pressing mold can squeeze the first pressing mold and the second pressing mold so as to forming ends squeeze generate protrusion process with it is right
The process that protrusion is squeezed can carry out simultaneously, avoid in the prior art in the extruding that configured ends are carried out with first direction
The additional trimming for being directed to protrusion together later, to simplify manufacturing process.Manufacturing process provided by the invention,
It can be effectively prevented the side excessive deformation that rear axle aluminum alloy control arm generates protrusion, prevent configured ends from cracking, and have
The succinct advantage of manufacturing process.
Detailed description of the invention
The above and other features of the present invention, property and advantage will pass through retouching with reference to the accompanying drawings and examples
It states and becomes readily apparent from, in which:
Fig. 1 is the schematic diagram of the aluminum alloy extrusion section bar of specific dimensions；
Fig. 2 is the schematic diagram of bending mould in bending operation；
Fig. 3 is the schematic diagram of rear axle aluminum alloy control arm main body；
Fig. 4 is the schematic diagram of rear axle aluminum alloy control arm forming device；
Fig. 5 is the schematic diagram of rear axle aluminum alloy control arm.
Specific embodiment
The invention will be further described with attached drawing combined with specific embodiments below, elaborates in the following description more
Details to facilitate a thorough understanding of the present invention, still the present invention obviously can be come with a variety of other ways different from this description it is real
It applies, those skilled in the art can make similar popularization according to practical situations without violating the connotation of the present invention, drill
It unravels silk, therefore should not be limited the scope of the invention with the content of this specific embodiment.
It should be noted that Fig. 1 to Fig. 5 only as an example, its not be according to equal proportion condition draw, and
It should not be construed as limiting in this, as the protection scope to actual requirement of the present invention.
As shown in figure 4, there is rear axle aluminum alloy control arm forming device pedestal 6, top plate 7, supporting mechanism 302, first to press
Mould 201, the second pressing mold 202 and third pressing mold 301；The two sides of 6 top of pedestal are relatively set with supporting mechanism 302, supporting mechanism
302 tops are provided with top plate 7, and top plate 7 is across simultaneously supported body 302 supports on supporting mechanism 302；
First pressing mold 201 and the second pressing mold 202 are arranged along first direction in 6 two sides of pedestal, and configured ends 101 are fixedly installed on
Between first pressing mold 201 and the second pressing mold 202, the first pressing mold 201 and the second pressing mold 202 can be leaned on mutually in a first direction
Closely, to realize the extruding to configured ends 101, and configured ends 101 is made to generate protrusion 102 towards the side of top plate 7；Third pressing mold
301 include the first side mode 301a, the second side mode 301b and middle mould 301c, and middle mould 301c is fixed at 7 middle part of top plate the bottom of towards
The side of seat 6；First side mode 301a and the second side mode 301b is separately positioned on the two sides of middle mould 301c, and presses respectively with first
Mould 201 and the second pressing mold 202 are oppositely arranged；Middle mould 301c can be contacted with protrusion 102 and be applied pressure to protrusion 102, to prevent
Only configured ends 101 generate the side excessive deformation of protrusion 102.
Third pressing mold 301 move downward enable to the first side mode 301a and the second side mode 301b respectively with the first pressing mold
201 and second pressing mold 202 be in contact, and the first pressing mold 201 and the second pressing mold 202 can be pushed mutually to lean in a first direction
Closely, with extrusion molding end 101 and formed protrusion 102；With continued reference to Fig. 4, the contact surface of the first side mode 301a and the first pressing mold 201
For inclined-plane, therefore, when the first side mode 301a generates pressure to the first pressing mold 201, which has in a first direction, that is, water
Square upward component, this component can push the first pressing mold 201 to move right.Similarly, the pressure of the second side mode 301b and second
The contact surface of mould 202 is also inclined-plane, and the second side mode 301b can push away the component of the pressure of the second pressing mold 202 in a first direction
Dynamic first pressing mold 201 moves downward, so that the first pressing mold 201 and the second pressing mold 202 can be leaned on mutually in a first direction
Closely.That is, the first side mode 301a and the second side mode 301b are oppositely arranged with the first pressing mold 201 and the second pressing mold 202 respectively,
Need to guarantee generation when the first side mode 301a and the second side mode 301b are contacted with the first pressing mold 201 and the second pressing mold 202 respectively
Pressure there is the component on first direction, and two component is contrary.This needs is presented as first in structure
The contact surface of side mode 301a and the first pressing mold 201 is inclined-plane, and the normal direction on inclined-plane and horizontal direction have obtuse angle angle
The contact surface of α, the second side mode 301b and the second pressing mold 202 is also inclined-plane, and the normal direction on inclined-plane has with horizontal direction
Acute angle β.
The advantages of above scheme is, the pushing of third pressing mold 301 can to the first pressing mold 201 and the second pressing mold 202 into
Row squeezes, and the process for squeezing generation protrusion to forming ends is carried out simultaneously with the process squeezed protrusion, will be squeezed
Pressure is combined into one with shaping, and is able to satisfy part size and performance requirement, is avoided and in the prior art is carried out to configured ends
The additional trimming for being directed to protrusion together after the extruding of first direction, to simplify manufacturing process.
In order to realize the pushing process of third pressing mold 301, support cylinder is can be used in supporting mechanism 302, and support cylinder can
Third pressing mold 301 is driven to move towards configured ends 101.
Optionally, third pressing mold 301 pushes 10.5mm, the first side mode 301a and the second side mode 301b with the speed of 5mm/s
Extrusion speed be 5mm/s, total displacement 20mm.
First pressing mold 201 and the second pressing mold 202 can also voluntarily be realized independently of third pressing mold 301 to configured ends 101
Extrusion process.With continued reference to Fig. 4, it is also equipped with power plant module above pedestal 6, power plant module includes the first cylinder 303 and the
Two cylinders 304, the first cylinder 303 are located at left side and connect with the first pressing mold 201, and the second cylinder 304 is located at right side and the second pressing mold
202 connections.In the case where not starting third pressing mold 301, the first pressing mold 201 and the second pressing mold 202 can be respectively in the first gas
It is adjacent to each other under the driving of cylinder 303 and the second cylinder 304.The direction of first pressing mold 201 and the movement of the second pressing mold 202 is preferably water
Square to, naturally it is also possible to be other directions.The configured ends 101 of rear axle aluminum alloy control arm 1 are fixedly installed on the first pressing mold 201
And second between pressing mold 202, and by 202 extrusion forming of the first pressing mold 201 and the second pressing mold.Configured ends 101 are being squeezed
In the case of, one side can generate protrusion 102.Since configured ends 101 are internally provided with plug 401,101 bottom-type face of configured ends is not
Depressed deformation can occur, the side of generation protrusion 102 is usually the upside in Fig. 4, the i.e. side towards top plate 7.In addition, can also
Only to start any one cylinder in the first cylinder 303 and the second cylinder 304, to realize the first pressing mold 201 and the second pressing mold
202 process close to each other in a first direction.To prevent configured ends 101 from generating the side excessive deformation of protrusion 102, middle mould
301c can also be fixed at the middle part of top plate 7 towards the side of pedestal 6 in advance, between middle mould 301c and configured ends 101 away from
It adjusts from the length that can be stretched out by adjusting the piston rod of support cylinder 302, again consolidates piston rod after being adjusted to setting position
It is fixed.During protrusion 102 gradually shapes, middle mould 301c can be contacted with protrusion 102 and be applied pressure to protrusion 102.?
In Fig. 4, middle mould 301c is arranged in the upside of configured ends 101, and the direction (vertical direction) of its pressure generated is perpendicular to the
The direction of one pressing mold 201 and the movement of the second pressing mold 202.
With continued reference to Fig. 4, rear axle aluminum alloy control arm forming device further includes convex block 305, and convex block 305 is fixed at
Between one pressing mold 201 and the second pressing mold 202, configured ends 101 are set to 305 top of convex block, and convex block 305 is used for the first pressing mold
201 and second pressing mold 202 generation close to each other limit, prevent the first pressing mold 201 and the second pressing mold 202 to configured ends 101 produce
Raw excessive compression.
Fig. 1-5 shows manufacturing process provided by the invention, for the forming of rear axle aluminum alloy control arm 1, manufacturing process
Include:
A. fracture processing is carried out to annealed state aluminum alloy extrusion section bar, to obtain the aluminum alloy extrusion section bar of specific dimensions
11；The mode of fracture processing includes cutting.It is generally necessary to be cut into according to the length of rear axle aluminum alloy control arm 1 suitable specific
The aluminum alloy extrusion section bar 11 of size.
B. pre-treatment is carried out to the aluminum alloy extrusion section bar of specific dimensions, to obtain rear axle aluminum alloy control arm main body
10；Pre-treatment includes bending operation and trimming process；Bending operation can carry out in bending mould as shown in Figure 2.
Bending mould includes upper mold 501 and lower die 502, and upward groove is offered in the middle part of lower die 502.Specific dimensions it is aluminium alloy extruded
Profile 11 is arranged between upper mold 501 and groove, is bent under the extruding of upper mold 501 and groove.In bending operation, in spy
Bending mandrel 503 is inserted into the knuckle connecting pin 103 of the aluminum alloy extrusion section bar 11 of scale cun, to prevent occurring becoming due to bending
Caused by shape amount is larger the phenomenon that the recess of bending 103 bottom-type face of rear steering section connecting pin.503 upper end of bending mandrel is straight
Shape makes it easier to be inserted into knuckle connecting pin 103 in the actual operation process.In trimming process, by the marginal position of part
Carry out trimming processing.Rear axle aluminum alloy control arm main body 10 as shown in Figure 3 is formed after trimming processing.
C., plug 401 is set inside the configured ends 101 of rear axle aluminum alloy control arm main body 10, uses rear axle aluminium as above
Alloy control arm forming device carries out partial plastic forming processing to the configured ends 101 of rear axle aluminum alloy control arm main body 10；Part at
Shape is handled
C01. the configured ends 101 of rear axle aluminum alloy control arm 1 are fixedly installed on the first pressing mold 201 and the second pressing mold 202
Between；Configured ends 101 can be subframe connecting pin.
Move third pressing mold 301 towards configured ends 101, to drive the first side mode 301a and the second side mode 301b points
It is not in contact with the first pressing mold 201 and the second pressing mold 202, and pushes the first pressing mold 201 and the second pressing mold 202 in a first direction
It is close to each other, protrusion 102 is generated towards the side of top plate 7 with extrusion molding end 101 and in configured ends 101；
C03. continue to move third pressing mold 301 towards configured ends 101, protrusion 102 is applied with mould 301c in drive and is pressed
Power.
D. hole machined is carried out to the rear axle aluminum alloy control arm main body by partial plastic forming processing, to obtain rear axle aluminium alloy
Control arm 1.Hole machined can be realized by way of punching press.
It, can also be voluntarily real independently of third pressing mold 301 using the first pressing mold 201 and the second pressing mold 202 in step c02
Now to the operating method of the extrusion process of configured ends 101, i.e., start the first cylinder 303 and the second cylinder 304 first, to configured ends
After 101 form extruding, then push third pressing mold 301.It can also be by any one in the first cylinder 303 and the second cylinder 304
Piston rod fix, start another cylinder, realize the extruding to configured ends 101, later push again third pressing mold 301.
The positive effect of the present invention is that: rear axle aluminum alloy control arm forming device provided by the invention, it can not only
Extrusion molding is carried out to the configured ends of rear axle aluminum alloy control arm in a first direction, additionally it is possible to generating in extrusion process
Protrusion apply pressure, thus be effectively prevented rear axle aluminum alloy control arm generate protrusion side excessive deformation.In addition, third
The pushing of pressing mold can squeeze the first pressing mold and the second pressing mold so as to forming ends squeeze generate protrusion process with it is right
The process that protrusion is squeezed can carry out simultaneously, avoid in the prior art in the extruding that configured ends are carried out with first direction
The additional trimming for being directed to protrusion together later, to simplify manufacturing process.Manufacturing process provided by the invention,
It can be effectively prevented the side excessive deformation that rear axle aluminum alloy control arm generates protrusion, prevent configured ends from cracking, and have
The succinct advantage of manufacturing process.
Although the present invention is disclosed as above with preferred embodiment, it is not for limiting the present invention, any this field skill
Art personnel without departing from the spirit and scope of the present invention, can make possible variation and modification, all without departing from this hair
The content of bright technical solution, according to the technical essence of the invention any modification to the above embodiments, equivalent variations and repair
Decorations, each fall within the protection scope that the claims in the present invention are defined.
Claims (7)
1. a kind of rear axle aluminum alloy control arm forming device, for the configured ends (101) to the rear axle aluminum alloy control arm (1)
Partial plastic forming processing is carried out, the configured ends (101) are internally provided with plug (401), which is characterized in that the rear axle aluminium alloy
Control arm forming device include pedestal (6), top plate (7), supporting mechanism (302), the first pressing mold (201), the second pressing mold (202) and
Third pressing mold (301)；
The two sides of the pedestal (6) are provided with the supporting mechanism (302), are provided with above the supporting mechanism (302) described
Top plate (7), the top plate (7) support across on the supporting mechanism (302) and by the supporting mechanism (302)；
First pressing mold (201) and second pressing mold (202) are arranged along first direction in the pedestal (6) two sides, described
Configured ends (101) are fixedly installed between first pressing mold (201) and second pressing mold (202), first pressing mold
(201) and second pressing mold (202) can be close to each other in said first direction, to realize to the configured ends (101)
Extruding, and the configured ends (101) is made to generate raised (102) towards the side of the top plate (7)；
The third pressing mold (301) includes the first side mode (301a), the second side mode (301b) He Zhongmo (301c), the middle mould
(301c) is fixed at the side in the middle part of the top plate (7) towards the pedestal (6)；First side mode (301a) and described
Second side mode (301b) is connected on the top plate (7), is separately positioned on the two sides of the middle mould (301c), and respectively with institute
It states the first pressing mold (201) and second pressing mold (202) is oppositely arranged；
The third pressing mold (301), which moves downward, enables to first side mode (301a) and second side mode (301b) point
Be not in contact with first pressing mold (201) and second pressing mold (202), and can push first pressing mold (201) and
Second pressing mold (202) is close to each other in said first direction, to squeeze the configured ends (101) and form the protrusion
(102)；
The middle mould (301c) can contact with raised (102) and apply pressure to described raised (102).
2. rear axle aluminum alloy control arm forming device as described in claim 1, which is characterized in that the rear axle aluminium alloy control
Arm forming device further includes power plant module, the power plant module respectively with first pressing mold (201) and second pressing mold
(202) it connects, the power plant module can drive first pressing mold (201) and second pressing mold (202) described first
It is close to each other on direction.
3. rear axle aluminum alloy control arm forming device as described in claim 1, which is characterized in that the supporting mechanism (302)
To support cylinder, the support cylinder can drive the third pressing mold (301) to move towards the configured ends (101).
4. rear axle aluminum alloy control arm forming device as claimed in claim 2, which is characterized in that the power plant module includes the
One cylinder (303) and the second cylinder (304), first cylinder (303) connect with first pressing mold (201), and described second
Cylinder (304) is connect with second pressing mold (202).
5. rear axle aluminum alloy control arm forming device as described in claim 1, which is characterized in that the rear axle aluminium alloy control
Arm forming device further includes convex block (305), and the convex block (305) is fixed at first pressing mold (201) and described second
Between pressing mold (202), the configured ends (101) are set to above the convex block (305), and the convex block (305) is used for described
The generation close to each other of first pressing mold (201) and second pressing mold (202) limits, and prevents first pressing mold (201) and institute
It states the second pressing mold (202) and excessive compression is generated to the configured ends (101).
6. rear axle aluminum alloy control arm forming device as described in claim 1, which is characterized in that the first direction is level
Direction.
7. rear axle aluminum alloy control arm forming device as claimed in claim 6, which is characterized in that the direction of the pressure is perpendicular
Histogram to.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611080934.6A CN107303597B (en) | 2016-11-30 | 2016-11-30 | Rear axle aluminum alloy control arm forming device and manufacturing process |
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|---|---|---|---|
| CN201611080934.6A CN107303597B (en) | 2016-11-30 | 2016-11-30 | Rear axle aluminum alloy control arm forming device and manufacturing process |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107303597A (en) | 2017-10-31 |
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