CN114082863A - Trimming die for C-shaped opening of front lower control arm and trimming method thereof - Google Patents
Trimming die for C-shaped opening of front lower control arm and trimming method thereof Download PDFInfo
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- CN114082863A CN114082863A CN202110902429.XA CN202110902429A CN114082863A CN 114082863 A CN114082863 A CN 114082863A CN 202110902429 A CN202110902429 A CN 202110902429A CN 114082863 A CN114082863 A CN 114082863A
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- die
- trimming
- wedge mechanism
- control arm
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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
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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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/14—Dies
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- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Punching Or Piercing (AREA)
Abstract
The invention provides a trimming die for a C-shaped opening of a front lower control arm and a trimming method thereof, wherein the trimming die comprises a lower die and an upper die, the lower die comprises a lower die seat, a female die wedge mechanism, a trimming male die and a male die wedge mechanism, the female die wedge mechanism and the male die wedge mechanism are respectively arranged on the lower die seat in a sliding manner, an installation space is formed between the female die wedge mechanism and the male die wedge mechanism, a first arm part of the front lower control arm is arranged in the installation space, and the trimming male die is inserted into the C-shaped opening of the first arm part; the second arm part of the front lower control arm is arranged in a notch of the die wedge mechanism, and the front lower control arm is arranged on the die wedge mechanism in a crossing manner; the male die driving block drives the male die wedge mechanism to move, so that the trimming male die trims the C-shaped opening of the front lower control arm from inside to outside. The invention can ensure that the C-shaped opening can be finished only by trimming once, thereby improving the size precision and the efficiency of the C-shaped opening. The trimmed C-shaped opening has no burr and is consistent with a digital-analog model.
Description
Technical Field
The invention relates to the field of trimming of C-shaped openings, in particular to a trimming die for a C-shaped opening of a front lower control arm and a trimming method thereof.
Background
In the prior art, a single-piece front lower control arm is one of the most common core parts in Macpherson suspension in the current mainstream vehicle type and is formed by stamping and forming an ultrahigh-strength steel plate. Due to the space arrangement requirement, the parts have unique geometrical characteristics: the C-shaped opening has unique shape and high size requirement.
Fig. 1 is a schematic structural diagram of a front lower control arm in the prior art.
As shown in fig. 1, the lower front control arm has two C-shaped openings 10. At present, the conventional stamping is usually adopted for the C-shaped opening 10, and the trimming of the C-shaped opening is difficult to ensure that the trimming insert has enough strength while the dimensional accuracy is ensured, so that the service life of the trimming insert and the trimming quality of a stamping part cannot be ensured simultaneously.
Fig. 2 is a first schematic diagram of a prior art method for trimming a C-shaped opening. FIG. 3 is a second schematic diagram of a prior art method for trimming a C-shaped opening.
As shown in fig. 2 and 3, the conventional C-notch trimming method employs trimming in two steps from the outside of the part to the inside of the part. Fig. 2 shows a first trimming of the C-shaped orifice 10 with the trimming punch 23 moving in the punch movement direction a. Fig. 3 shows a second trimming of the C-port 10 using a trimming punch 23 moving in the punch movement direction a.
Fig. 4 is a schematic diagram of a prior art burr after trimming a C-shaped opening.
As shown in FIG. 4, the trimming and punching angles of the two times of side trimming in the process are different, and the notch and the burr are arranged at the process cutter connecting position, namely the burr 100 is generated after the two times of trimming, so that the requirements on size and appearance cannot be ensured.
Meanwhile, due to the limitation of part modeling, the position space of the C-shaped opening is narrow, the side trimming structure is difficult to set, and the trimming quality and stability cannot be guaranteed. In addition, the material strength of the part is high, the die space is small, and the structural size and the shape are limited, so that the trimming cutting edge of the C-shaped opening is frequently damaged, and the maintenance cost is high.
In view of the above, the present inventors have devised an edge trimming method for machining a C-shaped opening, in order to overcome the above technical problems.
Disclosure of Invention
The invention aims to overcome the defects that in the prior art, a side trimming structure of a C-shaped opening is difficult to set, the trimming quality and stability cannot be ensured, and the like, and provides a trimming method for processing the C-shaped opening.
The invention solves the technical problems through the following technical scheme:
the utility model provides a repair towards mould that is used for preceding lower control arm C type mouth, includes lower mould and last mould, its characterized in that: the lower die comprises a lower die seat, a female die wedge mechanism, a trimming male die and a male die wedge mechanism, the female die wedge mechanism and the male die wedge mechanism are respectively installed on the lower die seat in a sliding mode, an installation space is formed between the female die wedge mechanism and the male die wedge mechanism, a first arm of a front lower control arm to be processed is installed in the installation space, the trimming male die is installed on the inner wall surface of the male die wedge mechanism, and the trimming male die is inserted into a C-shaped opening of the first arm;
a notch is formed in the upper part of the female die wedge mechanism, and a second arm part of the front lower control arm is installed in the notch, so that the front lower control arm is installed on the female die wedge mechanism in a crossing manner;
the upper die comprises an upper die base, a female die driving block and a male die driving block, when the upper die is matched with the lower die for die assembly, the female die driving block is matched with the female die wedge mechanism to drive the female die wedge mechanism to move, and the male die driving block is matched with the male die wedge mechanism to drive the male die wedge mechanism to move, so that the trimming male die trims the C-shaped port of the front lower control arm from inside to outside.
According to one embodiment of the invention, at least one inclined first driving surface is respectively arranged at two ends of one side of the female die wedge mechanism, the female die driving block is matched with the first driving surface, and the female die wedge mechanism moves by the aid of pushing force between the female die driving block and the first driving surface.
According to one embodiment of the invention, the first driving surface is located on both sides of the recess.
According to an embodiment of the present invention, the width of the notch is larger than the width of the second arm portion, and a gap is left between the inner wall surface of the side portion of the notch and the second arm portion.
According to one embodiment of the invention, at least one guide rail is arranged on the lower die holder, at least one guide rail sliding groove is arranged at the bottom end of the female die wedge mechanism, and the female die wedge mechanism is arranged on the guide rail through the guide rail sliding groove.
According to an embodiment of the invention, a wall surface of the die cam mechanism opposite to the first arm portion is provided with a trimming groove, and the trimming groove and the first arm portion are matched in shape and used for fixing the position of the first arm portion.
According to one embodiment of the invention, the outer side surface of the punch cam mechanism is provided with at least one inclined second driving surface, the punch driving block and the second driving surface are matched with each other, and the punch cam mechanism is moved by the pushing force between the punch driving block and the second driving surface.
According to one embodiment of the invention, the trimming punch comprises a base body and a blade, the blade being mounted on the base body by means of additive manufacturing.
According to one embodiment of the invention, the end of the blade is a circular arc surface.
According to one embodiment of the invention, the blade portion is made of tungsten carbide, titanium alloy, titanium-based composite, iron-based composite, and metal-based ceramic material.
The invention also provides a trimming method for the C-shaped opening of the front lower control arm, which is characterized in that the trimming method adopts the trimming die for the C-shaped opening of the front lower control arm, and the trimming method comprises the following steps:
S1placing a front lower control arm with a C-shaped opening to be processed into a lower die of a trimming and punching die, wherein a first arm part with the C-shaped opening on the front lower control arm is positioned in an installation space between a female die wedge mechanism and a male die wedge mechanism of the lower die, and a second arm part of the front lower control arm is installed in a notch of the female die wedge mechanism, so that the front lower control arm is installed on the female die wedge mechanism in a crossing manner;
S2the press moves downwards, so that the upper die of the trimming and punching die integrally moves downwards to press the front lower control arm;
S3the female die driving block of the upper die is in contact fit with the female die wedge mechanism in the lower die to drive the female die wedge mechanism to slide close to and press the first arm part with the C-shaped opening on the front lower control arm;
S4the male die driving block of the upper die is in contact fit with a male die wedge mechanism in the lower die, the male die wedge mechanism is driven to slide close to the front lower control arm, and the C-shaped opening is trimmed through a trimming male die arranged on the male die wedge mechanism;
S5and the press moves upwards, the upper die is separated from the lower die, and the front lower control arm is taken out.
According to an embodiment of the invention, said step S2The method specifically comprises the following steps: and the material pressing plate in the upper die is in contact with the front lower control arm and presses the front lower control arm.
According to one embodiment of the invention, the pressure of the nip plate is 12 t.
According to one of the present inventionExample of the step S3The method specifically comprises the following steps:
S31the driving surface of the female die driving block is in contact with the driving surface of the female die wedge mechanism and slides relatively, so that the female die wedge mechanism slides along the guide rail of the lower die;
S32and the trimming groove of the female die wedge mechanism is tightly attached to the C-shaped opening and keeps pressing.
According to an embodiment of the invention, said step S4The method specifically comprises the following steps:
S41the driving surface of the male die driving block is in contact with the driving surface of the male die wedge mechanism and slides relatively, so that the male die wedge mechanism slides to be close to the C-shaped opening;
S42and the trimming male die is arranged on the male die wedge mechanism, and along with the movement of the male die wedge mechanism, the trimming male die finishes trimming the C-shaped opening.
According to an embodiment of the invention, said step S5The method specifically comprises the following steps:
S51the press moves upwards, the driving surface of the male die driving block is separated from the driving surface of the male die wedge mechanism, and the male die wedge mechanism retreats to an initial installation position under the action of a self force source;
S52the driving surface of the female die driving block is separated from the driving surface of the female die wedge mechanism, and the female die wedge mechanism retreats to an initial installation position under the action of a self force source;
S53and separating the material pressing plate of the upper die from the surface of the front lower control arm, and taking the front lower control arm out of the trimming die.
According to an embodiment of the invention, said step S1Wherein the distance between the female die wedge mechanism and the male die wedge mechanism is more than 70mm before trimming.
According to an embodiment of the invention, said step S4The distance between the female die wedge mechanism and the male die wedge mechanism is repairedThe time is more than or equal to 20 mm.
The positive progress effects of the invention are as follows:
the trimming die for the C-shaped opening of the front lower control arm can ensure that the C-shaped opening can be trimmed only once, so that the dimensional precision and the efficiency of the C-shaped opening can be improved. The C-shaped opening trimmed by the trimming die tool is free of burrs and is consistent with a digital-analog model. Meanwhile, the trimming die is made of novel materials, so that the die maintenance cost can be effectively reduced, and good size and appearance can be obtained.
The trimming method for the C-shaped opening of the front lower control arm can ensure that the C-shaped opening can be trimmed only once, and not only can the dimensional accuracy of the C-shaped opening be improved, but also the efficiency can be improved. Through the use of the trimming method for processing the C-shaped opening, the trimmed and punched C-shaped opening is not provided with a notch or burr and is consistent with a digital model.
Drawings
The above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings in which like reference numerals denote like features throughout the several views, wherein:
fig. 1 is a schematic structural diagram of a front lower control arm in the prior art.
Fig. 2 is a first schematic diagram of a prior art method for trimming a C-shaped opening.
FIG. 3 is a second schematic diagram of a prior art method for trimming a C-shaped opening.
Fig. 4 is a schematic diagram of a prior art burr after trimming a C-shaped opening.
FIG. 5 is a perspective view of the lower die of the trimming and punching die for the C-shaped opening of the front lower control arm according to the present invention.
FIG. 6 is a perspective view of the upper die of the trimming die for the C-shaped opening of the front lower control arm according to the present invention.
Fig. 7 is a first perspective view of a die wedge mechanism in a trimming die for a C-shaped opening of a front lower control arm according to the present invention.
Fig. 8 is a second perspective view of the female die wedge mechanism of the trimming die tool for the C-shaped opening of the front lower control arm according to the present invention.
FIG. 9 is a perspective view of a trimming punch of the trimming punch tool for the C-shaped opening of the front lower control arm according to the invention.
FIG. 10 is a schematic view showing the use state of the trimming and punching die for the C-shaped opening of the front lower control arm according to the present invention.
FIG. 11 is a flow chart of a method of the present invention for deburring C-notches in lower front control arms.
[ reference numerals ]
C-shaped openings 10, 43
Lower die 20
Upper die 30
Front lower control arm 40
Die wedge mechanism 22
Trimming punch 23
Installation space B
Die drive block 32
Guide rail slide groove 223
Trimming groove 224
Second driving surface 241
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.
Further, although the terms used in the present invention are selected from publicly known and used terms, some of the terms mentioned in the description of the present invention may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein.
Furthermore, it is required that the present invention is understood, not simply by the actual terms used but by the meaning of each term lying within.
FIG. 5 is a perspective view of the lower die of the trimming and punching die for the C-shaped opening of the front lower control arm according to the present invention. FIG. 6 is a perspective view of the upper die of the trimming die for the C-shaped opening of the front lower control arm according to the present invention.
As shown in FIGS. 5 and 6, the invention discloses a trimming and punching die for a C-shaped opening of a front lower control arm, which comprises a lower die 20 and an upper die 30. The lower die 20 comprises a lower die base 21, a female die wedge mechanism 22, a trimming male die 23 and a male die wedge mechanism 24, wherein the female die wedge mechanism 22 and the male die wedge mechanism 24 are respectively installed on the lower die base 21 in a sliding manner. An installation space B is formed between the die wedge mechanism 22 and the punch wedge mechanism 24, a first arm part 41 of the front lower control arm 40 to be processed is installed in the installation space B, the trimming punch 23 is installed on the inner wall surface of the punch wedge mechanism 24, and the trimming punch 23 enters and exits from a C-shaped opening 43 of the first arm part 41. A notch 221 is formed in the upper portion of the die cam mechanism 22, and the second arm portion 42 of the front lower control arm 40 is mounted in the notch 221, so that the front lower control arm 40 is mounted on the die cam mechanism 22 in a straddling manner.
The upper die 30 comprises an upper die seat 31, a female die driving block 32 and a male die driving block 33, when the upper die 30 and the lower die 20 are matched and matched, the female die driving block 32 is matched with the female die wedge mechanism 22 to drive the female die wedge mechanism 22 to move, the male die driving block 33 is matched with the male die wedge mechanism 24 to drive the male die wedge mechanism 24 to move, and therefore the trimming male die 23 trims the C-shaped opening 43 of the front lower control arm 40 from inside to outside.
Before trimming of the C-shaped opening is started and after trimming of the C-shaped opening is finished, the trimming convex die 23 is located between the two C-shaped openings of the part, namely the trimming convex die 23 moves outwards from the inside of the part during trimming to finish trimming.
In addition, a pressure plate 34 may be provided on the upper die 30, and the pressure plate 24 is used to press a part to be processed, such as the front lower control arm 40, when the upper die 30 and the lower die 20 are clamped.
Here, the width of the installation space B (i.e., the space defined by the enclosure between the die cam mechanism 22 and the punch cam mechanism 24) is the minimum distance between the die cam mechanism 22 and the punch cam mechanism 24, and it should be greater than 70mm before trimming (i.e., the strokes of the die cam mechanism 22 and the punch cam mechanism 24 are both 0) to ensure that the process of putting in and taking out the front lower control arm 40 is normal.
During trimming (i.e. the maximum stroke of the die wedge mechanism 22 and the punch wedge mechanism 24), the minimum distance between the die wedge mechanism 22 and the punch wedge mechanism 24 should be greater than or equal to 20 mm.
Fig. 7 is a first perspective view of a die wedge mechanism in a trimming die for a C-shaped opening of a front lower control arm according to the present invention. Fig. 8 is a second perspective view of the female die wedge mechanism of the trimming die tool for the C-shaped opening of the front lower control arm according to the present invention.
As shown in fig. 7 and 8, preferably, at least one first driving surface 222 is provided at each of two ends of one side of the die cam mechanism 22, the die driving block 32 is matched with the first driving surface 222, and the die cam mechanism 22 is moved by the driving force between the die driving block 32 and the first driving surface 222.
Preferably, first drive faces 222 are located on either side of recess 221.
Specifically, here, the width of the notch 221 is larger than the width of the second arm portion 42, and a gap is left between the inner wall surface of the side portion of the notch 221 and the second arm portion 42.
That is, the notch 221 is sized larger than the part (e.g., greater than 200mm) to completely span the part and completely clear the part from contact during movement. The component here is for example a lower front control arm.
The step-over structure of the die cam mechanism 22 is an important part of the method of trimming and punching the C-shaped opening because the step-over structure of the die cam mechanism 22 is not arranged on the same side of the part due to the limitation of the shape of the part itself.
Further, at least one guide rail 25 is arranged on the lower die holder 21, at least one guide rail sliding groove 223 is arranged at the bottom end of the die wedge mechanism 22, and the die wedge mechanism 22 is installed on the guide rail 25 through the guide rail sliding groove 223. Thus, the die cam mechanism 22 can only move in the direction limited by the guide 25 (e.g., move in the direction of the arrow shown in fig. 7), and the movement in the other direction is limited to an error of less than 0.05 mm.
Similarly, the punch cam mechanism 24 can also be slidably connected to the lower die base 21 through a guide rail.
In addition, a trimming groove 224 is formed in a wall surface of the die cam mechanism 22 opposite to the first arm portion 41 of the front and lower control arm 40, and the trimming groove 224 is matched with the first arm portion 41 in shape to fix the position of the first arm portion 41.
As shown in fig. 5 and 6, at least one second driving surface 241 is preferably arranged on the outer side surface of the punch cam mechanism 24, the punch driving block 33 is matched with the second driving surface 241, and the punch cam mechanism 24 is moved by the pushing force between the punch driving block 33 and the second driving surface 241.
FIG. 9 is a perspective view of a trimming punch of the trimming punch tool for the C-shaped opening of the front lower control arm according to the invention.
As shown in fig. 9, the trimming punch 23 preferably includes a base 231 and a blade 232, and the blade 232 is attached to the base 231 by additive manufacturing. The end of the blade 232 is preferably a circular arc surface.
Specifically, since the design space of the trimming punch 23 is strictly limited, it is necessary to ensure sufficient toughness of the punch and sufficient hardness at the edge of the trimming edge. Therefore, the trimming punch 23 is manufactured by additive manufacturing. The edge 232 of the trimming male die 23 is made of a special material, and the area of the edge in contact with the workpiece is attached to the substrate 231 with good toughness by adopting high-strength alloy printed in a 3D mode, so that the shearing strength of the edge is guaranteed, the sufficient toughness is achieved, and the service life of the trimming male die is greatly prolonged. The shape of the bonding line 233 at the joint of the blade 232 and the base 231 is a quadratic curve to ensure the reliability of the performance of the joint.
The blade 232 is preferably made of tungsten carbide, titanium alloy, titanium-based composite material, iron-based composite material, and metal-based ceramic material, and is attached to the substrate 231 by laser 3D printing technology.
The front lower control arm made of the high-strength steel material is applied to a plurality of vehicle types, the trimming process of the C-shaped opening can be simplified by adopting the trimming mode, the production efficiency is improved, the maintenance cost of the die can be effectively reduced by applying the novel material, and meanwhile, the good size and appearance are obtained.
FIG. 10 is a schematic view showing the use state of the trimming and punching die for the C-shaped opening of the front lower control arm according to the present invention.
As shown in fig. 10, the trimming die for C-shaped opening processing of the present invention employs a die wedge mechanism, and the die wedge mechanism passes through the lower portion of the part to be processed through the wedge structure, which solves the problem that the left space of the C-shaped opening 43 is insufficient and the wedge cannot be set, and when the C-shaped opening 43 is trimmed, the trimming die 224 moves to the right side along the arrow direction shown in fig. 7 under the push of the die wedge structure 22 to press the C-shaped opening 41. The trimming punch 23 is moved leftward in the direction of the arrow shown in fig. 7 to perform trimming, and the trimmed trimming punch 23 is first retracted rightward. The trimming concave die 224 is driven by the concave die wedge structure 22 to retreat, and trimming of the C-shaped opening 43 is completed.
The trimming die for the C-shaped opening of the front lower control arm can ensure that the C-shaped opening can be finished only by once trimming, so that the size precision and the efficiency of the C-shaped opening can be improved. The C-shaped opening repaired and punched by the repairing and punching die has no notch or burr and is consistent with a digital model.
In conclusion, the trimming die for the C-shaped opening of the front lower control arm can ensure that the C-shaped opening can be trimmed only once, so that the size precision and the efficiency of the C-shaped opening can be improved. The C-shaped opening trimmed by the trimming die tool is free of burrs and is consistent with a digital-analog model.
Meanwhile, the trimming die is made of novel materials, so that the die maintenance cost can be effectively reduced, and good size and appearance can be obtained.
FIG. 11 is a flow chart of a method of the present invention for deburring C-notches in lower front control arms.
As shown in fig. 11, the invention also discloses a trimming method for the C-shaped opening of the front lower control arm, which adopts the trimming mold for the C-shaped opening of the front lower control arm, and the trimming method comprises the following steps:
step S1And placing the front lower control arm 40 with the C-shaped opening to be processed into the lower die 20 of the trimming die, wherein the first arm part 41 with the C-shaped opening 43 on the front lower control arm 40 is positioned in the installation space B between the die wedge mechanism 22 and the punch wedge mechanism 24 of the lower die 20, so that the front lower control arm 40 is transversely installed on the die wedge mechanism 22.
Wherein the distance between the die cam mechanism 22 and the punch cam mechanism 24 is greater than 70mm before trimming.
Step S2And the press moves downwards, so that the upper die 30 of the trimming and punching die integrally moves downwards and presses the front lower control arm 40.
Preferably, the step S2The method can also specifically comprise the following steps: the swage plate 34 in the upper die 30 contacts the front lower control arm 40 and compresses the front lower control arm 40.
The pressing force of the pressing plate 210 in this embodiment is preferably 12 t.
Step S3The female die driving block 32 of the upper die 30 is in contact fit with the female die wedge mechanism 22 in the lower die 20, and drives the female die wedge mechanism 22 to slide close to and tightly press the female die wedge mechanism 22 for front and lower controlArm 40 has a first arm portion 41 with a C-shaped opening 43.
Preferably, the step S3The method can also specifically comprise the following steps:
S31the driving surface of the die driving block 32 contacts with the driving surface of the die cam mechanism 22 and slides relatively, so that the die cam mechanism 22 slides along the guide rail 25 of the lower die 20 (e.g., moves to the right side in the arrow direction in fig. 10);
S32and the trimming groove 224 of the die cam mechanism 22 is tightly attached to the C-shaped opening 43 and kept pressed.
More specifically, the trimming female die 224 is moved to the right side in the arrow direction in fig. 10 by the pushing of the female die cam mechanism 22, and the trimming female die 224 abuts against the C-shaped opening 43 and maintains a certain pressure when the stroke of the female die cam mechanism 224 reaches the maximum.
Step S4The punch driving block 33 of the upper die 30 is in contact fit with the punch wedge mechanism 24 in the lower die 20, the punch wedge mechanism 24 is driven to slide close to the front lower control arm 40, and the trimming punch 23 arranged on the punch wedge mechanism 24 trims the C-shaped opening 43.
Preferably, the step S4The method can also specifically comprise the following steps:
S41the driving surface of the punch driving block 33 contacts with the driving surface of the punch cam mechanism 24 and slides relatively, so that the punch cam mechanism 24 slides close to the C-shaped opening 43 (e.g. moves to the left side along the arrow direction in fig. 10);
S42the trimming convex die 23 is arranged on the convex die wedge mechanism 24, and the trimming convex die 23 finishes trimming the C-shaped opening 43 along with the movement of the convex die wedge mechanism 24.
And finishing trimming the C-shaped opening 43 when the stroke of the punch wedge structure reaches the maximum.
Wherein, the distance between the female die wedge mechanism 22 and the male die wedge mechanism 24 is more than or equal to 20mm when the modification is carried out.
Step S5The press moves upward, the upper die 30 is separated from the lower die 20, and the front lower control arm 40 is removed.
Preferably, the step S5The method can also specifically comprise the following steps:
S51the press moves upwards, the driving surface of the male die driving block 33 is separated from the driving surface of the male die wedge mechanism 24, and the male die wedge mechanism 24 retracts to an initial installation position (namely the position of the male die wedge mechanism 24 with the stroke of 0) under the action of the self force source;
S52the driving surface of the female die driving block 32 is separated from the driving surface of the female die wedge mechanism 22, and the female die wedge mechanism 22 retracts to an initial installation position (namely, the stroke of the female die wedge mechanism 22 is 0) under the action of the self force source;
the trimming notch 224 is now separated from the front lower control arm 40.
S53The blank holder 34 of the upper die 30 is separated from the surface of the front lower control arm 40, and the front lower control arm 40 is taken out of the trimming die.
In addition, it is preferable that the edge portion of the trimming male die 23 employ tungsten carbide, titanium alloy, titanium-based composite material, iron-based composite material, and metal-based ceramic material.
The trimming method for processing the C-shaped opening can ensure that the C-shaped opening can be finished by trimming once, and not only can improve the dimensional precision of the C-shaped opening, but also can improve the efficiency. Through the use of the trimming method for processing the C-shaped opening, the trimmed and punched C-shaped opening is not provided with a notch or burr and is consistent with a digital model.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (18)
1. The utility model provides a repair towards mould that is used for preceding lower control arm C type mouth, includes lower mould and last mould, its characterized in that: the lower die comprises a lower die seat, a female die wedge mechanism, a trimming male die and a male die wedge mechanism, the female die wedge mechanism and the male die wedge mechanism are respectively installed on the lower die seat in a sliding mode, an installation space is formed between the female die wedge mechanism and the male die wedge mechanism, a first arm of a front lower control arm to be processed is installed in the installation space, the trimming male die is installed on the inner wall surface of the male die wedge mechanism, and the trimming male die is inserted into a C-shaped opening of the first arm;
a notch is formed in the upper part of the female die wedge mechanism, and a second arm part of the front lower control arm is installed in the notch, so that the front lower control arm is installed on the female die wedge mechanism in a crossing manner;
the upper die comprises an upper die base, a female die driving block and a male die driving block, when the upper die is matched with the lower die for die assembly, the female die driving block is matched with the female die wedge mechanism to drive the female die wedge mechanism to move, and the male die driving block is matched with the male die wedge mechanism to drive the male die wedge mechanism to move, so that the trimming male die trims the C-shaped port of the front lower control arm from inside to outside.
2. The trimming and punching die for the C-shaped opening of the front lower control arm according to claim 1, wherein at least one inclined first driving surface is respectively arranged at two ends of one side of the female die wedge mechanism, the female die driving block is matched with the first driving surface, and the female die wedge mechanism is moved by the pushing force between the female die driving block and the first driving surface.
3. The trimming and punching die for the C-shaped opening of the front lower control arm according to claim 2, wherein the first driving surface is positioned at two sides of the notch.
4. The trimming-punching die for the C-shaped port of the front lower control arm according to claim 3, wherein the width of the notch is larger than that of the second arm part, and a gap is left between the inner wall surface of the side part of the notch and the second arm part.
5. The trimming-punching die for the C-shaped port of the front lower control arm as claimed in claim 1, wherein the lower die holder is provided with at least one guide rail, the bottom end of the female die wedge mechanism is provided with at least one guide rail sliding groove, and the female die wedge mechanism is mounted on the guide rail through the guide rail sliding groove.
6. The trimming-punching die for the C-shaped port of the front lower control arm as claimed in claim 2, wherein a trimming groove is formed on a wall surface of the female die wedge mechanism opposite to the first arm portion, and the trimming groove and the first arm portion are matched in shape to fix the position of the first arm portion.
7. The trimming and punching die for the C-shaped opening of the front lower control arm as claimed in claim 1, wherein the outer side surface of the punch cam mechanism is provided with at least one inclined second driving surface, the punch driving block is matched with the second driving surface, and the punch cam mechanism is moved by the pushing force between the punch driving block and the second driving surface.
8. The trimming punch die for the C-shaped port of the front lower control arm as claimed in claim 1, wherein the trimming punch comprises a base body and a blade part, and the blade part is arranged on the base body in an additive manufacturing mode.
9. The trimming-punching die for the C-shaped port of the front lower control arm as claimed in claim 8, wherein the end of the blade part is a circular arc surface.
10. The trimming-punching die for the C-shaped port of the front lower control arm as claimed in claim 9, wherein the blade portion is made of tungsten carbide, titanium alloy, titanium-based composite material, iron-based composite material and metal-based ceramic material.
11. An edge trimming method for C-shaped openings of front lower control arms, which is characterized in that the edge trimming method adopts a trimming and punching die for the C-shaped openings of the front lower control arms as claimed in any one of the claims 1-10, and the edge trimming method comprises the following steps:
S1placing a front lower control arm with a C-shaped opening to be processed into a lower die of a trimming and punching die, wherein a first arm part with the C-shaped opening on the front lower control arm is positioned in an installation space between a female die wedge mechanism and a male die wedge mechanism of the lower die, and a second arm part of the front lower control arm is installed in a notch of the female die wedge mechanism, so that the front lower control arm is installed on the female die wedge mechanism in a crossing manner;
S2the press moves downwards, so that the upper die of the trimming and punching die integrally moves downwards to press the front lower control arm;
S3the female die driving block of the upper die is in contact fit with the female die wedge mechanism in the lower die to drive the female die wedge mechanism to slide close to and press the first arm part with the C-shaped opening on the front lower control arm;
S4the male die driving block of the upper die is in contact fit with a male die wedge mechanism in the lower die, the male die wedge mechanism is driven to slide close to the front lower control arm, and the C-shaped opening is trimmed through a trimming male die arranged on the male die wedge mechanism;
S5and the press moves upwards, the upper die is separated from the lower die, and the front lower control arm is taken out.
12. The method for deburring C-shaped mouth of front lower control arm as claimed in claim 11, wherein said step S2The method specifically comprises the following steps: and the material pressing plate in the upper die is in contact with the front lower control arm and presses the front lower control arm.
13. The method for deburring front lower control arm C-shaped mouth of claim 12, wherein the pressure of said pressure plate is 12 t.
14. The method for deburring front lower control arm C-notch as claimed in claim 11, wherein said stepS3The method specifically comprises the following steps:
S31the driving surface of the female die driving block is in contact with the driving surface of the female die wedge mechanism and slides relatively, so that the female die wedge mechanism slides along the guide rail of the lower die;
S32and the trimming groove of the female die wedge mechanism is tightly attached to the C-shaped opening and keeps pressing.
15. The method for deburring C-shaped mouth of front lower control arm as claimed in claim 11, wherein said step S4The method specifically comprises the following steps:
S41the driving surface of the male die driving block is in contact with the driving surface of the male die wedge mechanism and slides relatively, so that the male die wedge mechanism slides to be close to the C-shaped opening;
S42and the trimming male die is arranged on the male die wedge mechanism, and along with the movement of the male die wedge mechanism, the trimming male die finishes trimming the C-shaped opening.
16. The method for deburring C-shaped mouth of front lower control arm as claimed in claim 11, wherein said step S5The method specifically comprises the following steps:
S51the press moves upwards, the driving surface of the male die driving block is separated from the driving surface of the male die wedge mechanism, and the male die wedge mechanism retreats to an initial installation position under the action of a self force source;
S52the driving surface of the female die driving block is separated from the driving surface of the female die wedge mechanism, and the female die wedge mechanism retreats to an initial installation position under the action of a self force source;
S53and separating the material pressing plate of the upper die from the surface of the front lower control arm, and taking the front lower control arm out of the trimming die.
17. The method for deburring C-shaped mouth of front lower control arm as claimed in claim 11, wherein said step S1Wherein the distance between the female die wedge mechanism and the male die wedge mechanism is more than 70mm before trimming.
18. The method for deburring C-shaped mouth of front lower control arm as claimed in claim 11, wherein said step S4The distance between the female die wedge mechanism and the male die wedge mechanism is more than or equal to 20mm when modification is carried out.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110902429.XA CN114082863A (en) | 2021-08-06 | 2021-08-06 | Trimming die for C-shaped opening of front lower control arm and trimming method thereof |
| MX2023001667A MX2023001667A (en) | 2021-08-06 | 2021-11-10 | Trimming and punching die for c-shaped opening of front lower control arm and trimming method therefor. |
| PCT/CN2021/129720 WO2023010706A1 (en) | 2021-08-06 | 2021-11-10 | Trimming and punching die for c-shaped opening of front lower control arm and trimming method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110902429.XA CN114082863A (en) | 2021-08-06 | 2021-08-06 | Trimming die for C-shaped opening of front lower control arm and trimming method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114082863A true CN114082863A (en) | 2022-02-25 |
Family
ID=80296063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110902429.XA Pending CN114082863A (en) | 2021-08-06 | 2021-08-06 | Trimming die for C-shaped opening of front lower control arm and trimming method thereof |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN114082863A (en) |
| MX (1) | MX2023001667A (en) |
| WO (1) | WO2023010706A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117206410B (en) * | 2023-11-08 | 2024-02-06 | 格致汽车科技股份有限公司 | Stamping and shearing process for machining small end of trailing arm |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203140542U (en) * | 2013-03-25 | 2013-08-21 | 上海汇众汽车制造有限公司 | Automobile high-strength steel transverse rocker arm combination blanking die |
| CN203936211U (en) * | 2014-06-18 | 2014-11-12 | 上海汇众汽车制造有限公司 | With the barb cutting edge mechanism of wedge slide block |
| CN206169061U (en) * | 2016-10-31 | 2017-05-17 | 浙江涛涛工贸有限公司 | Lower control arm hypoplastron assembling die about car |
| CN209379720U (en) * | 2018-12-21 | 2019-09-13 | 富奥威泰克汽车底盘系统有限公司 | A kind of pipe fitting angled end-face Trimming Die |
| CN209830034U (en) * | 2019-04-28 | 2019-12-24 | 浙江舜仕汽车技术有限公司 | Forming die for front lower control arm of automobile |
| CN210547332U (en) * | 2019-06-27 | 2020-05-19 | 中信戴卡股份有限公司 | Casting trimming die for front steering knuckle in double-wishbone suspension |
| CN210450411U (en) * | 2019-07-27 | 2020-05-05 | 长春市吉通凯撒铝业有限责任公司 | Mechanical device for deformation correction of U-shaped aluminum alloy control arm |
| CN215902610U (en) * | 2021-08-06 | 2022-02-25 | 上海汇众汽车制造有限公司 | Trimming die for C-shaped opening of front lower control arm |
-
2021
- 2021-08-06 CN CN202110902429.XA patent/CN114082863A/en active Pending
- 2021-11-10 WO PCT/CN2021/129720 patent/WO2023010706A1/en active Application Filing
- 2021-11-10 MX MX2023001667A patent/MX2023001667A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023010706A1 (en) | 2023-02-09 |
| MX2023001667A (en) | 2023-03-08 |
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