CN215902610U - Trimming die for C-shaped opening of front lower control arm - Google Patents
Trimming die for C-shaped opening of front lower control arm Download PDFInfo
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- CN215902610U CN215902610U CN202121829711.1U CN202121829711U CN215902610U CN 215902610 U CN215902610 U CN 215902610U CN 202121829711 U CN202121829711 U CN 202121829711U CN 215902610 U CN215902610 U CN 215902610U
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- die
- trimming
- wedge mechanism
- control arm
- lower control
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Abstract
The utility model provides a trimming and punching die for a C-shaped opening of a front lower control arm, which comprises a lower die and an upper die, wherein 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 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 installed 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 utility model 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 utility model relates to the field of dies, in particular to a trimming and punching die for a C-shaped opening of a front lower control arm.
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.
In addition, the front lower control arm is high in material strength, small in mold space and limited in structural size and shape, 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 inventor of the present application has devised a trimming and punching die for a C-shaped opening of a front lower control arm, in order to overcome the above technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects that in the prior art, the material strength of a front lower control arm is high, the space of a die is small, the die cannot simultaneously guarantee the service life of a trimming insert and the trimming quality of a stamping part, and the like, and provides a trimming and punching die for a C-shaped opening of the front lower control arm.
The utility model 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 utility model, 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 utility model, 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 utility model, 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 utility model, 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 utility model, 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 utility model, 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 utility model, the end of the blade is a circular arc surface.
According to one embodiment of the utility model, the blade portion is made of tungsten carbide, titanium alloy, titanium-based composite, iron-based composite, and metal-based ceramic material.
The positive progress effects of the utility model 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.
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 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 utility model.
FIG. 3 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. 4 is a first perspective view of a die wedge mechanism in the trimming die for the C-shaped opening of the front lower control arm according to the present invention.
Fig. 5 is a second perspective view of the female die wedge mechanism in the trimming die for the C-shaped opening of the front lower control arm according to the present invention.
FIG. 6 is a perspective view of a trimming punch of the trimming punch tool for the C-shaped opening of the front lower control arm of the utility model.
FIG. 7 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.
[ reference numerals ]
C- shaped openings 10, 43
Lower die 20
Upper die 30
Front lower control arm 40
Lower die holder 21
Die wedge mechanism 22
Trimming punch 23
Installation space B
Upper die holder 31
Die drive block 32
Punch drive block 33
Material pressing plate 34
Guide rail slide groove 223
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. 2 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 utility model. Fig. 3 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. 2 and 3, the utility model 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 34 is used for pressing 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. 4 is a first perspective view of a die wedge mechanism in the trimming die for the C-shaped opening of the front lower control arm according to the present invention. Fig. 5 is a second perspective view of the female die wedge mechanism in the trimming die for the C-shaped opening of the front lower control arm according to the present invention.
As shown in fig. 4 and 5, 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. 2 and 3, 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. 6 is a perspective view of a trimming punch of the trimming punch tool for the C-shaped opening of the front lower control arm of the utility model.
As shown in fig. 6, 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. 7 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. 7, the trimming die for C-shaped opening processing of the present invention employs a die wedge mechanism, and the die wedge mechanism is made to pass through the lower portion of the part to be processed by the wedge structure, which solves the problem that the space on the left side of the C-shaped opening 43 is insufficient and the wedge cannot be set, and the trimming groove 224 moves to the right side along the arrow direction shown in fig. 7 under the push of the die wedge structure 22 when the C-shaped opening 43 is trimmed, so as to press the C-shaped opening 43. 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 groove 224 is driven by the 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.
While specific embodiments of the utility model 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 utility model 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 utility model, and these changes and modifications are within the scope of the utility model.
Claims (9)
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121829711.1U CN215902610U (en) | 2021-08-06 | 2021-08-06 | Trimming die for C-shaped opening of front lower control arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121829711.1U CN215902610U (en) | 2021-08-06 | 2021-08-06 | Trimming die for C-shaped opening of front lower control arm |
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| Publication Number | Publication Date |
|---|---|
| CN215902610U true CN215902610U (en) | 2022-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121829711.1U Active CN215902610U (en) | 2021-08-06 | 2021-08-06 | Trimming die for C-shaped opening of front lower control arm |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023010706A1 (en) * | 2021-08-06 | 2023-02-09 | 上海汇众汽车制造有限公司 | Trimming and punching die for c-shaped opening of front lower control arm and trimming method therefor |
-
2021
- 2021-08-06 CN CN202121829711.1U patent/CN215902610U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023010706A1 (en) * | 2021-08-06 | 2023-02-09 | 上海汇众汽车制造有限公司 | Trimming and punching die for c-shaped opening of front lower control arm and trimming method therefor |
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