WO2023010706A1 - 用于前下控制臂c型口的修冲模具及其修边方法 - Google Patents

用于前下控制臂c型口的修冲模具及其修边方法 Download PDF

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Publication number
WO2023010706A1
WO2023010706A1 PCT/CN2021/129720 CN2021129720W WO2023010706A1 WO 2023010706 A1 WO2023010706 A1 WO 2023010706A1 CN 2021129720 W CN2021129720 W CN 2021129720W WO 2023010706 A1 WO2023010706 A1 WO 2023010706A1
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WO
WIPO (PCT)
Prior art keywords
die
wedge mechanism
trimming
control arm
punch
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Application number
PCT/CN2021/129720
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English (en)
French (fr)
Inventor
齐军
杨旭静
徐方箭
李茂君
陈纪宇
王韬
彭文宇
韩忠英
方建国
Original Assignee
上海汇众汽车制造有限公司
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Publication date
Application filed by 上海汇众汽车制造有限公司 filed Critical 上海汇众汽车制造有限公司
Priority to MX2023001667A priority Critical patent/MX2023001667A/es
Publication of WO2023010706A1 publication Critical patent/WO2023010706A1/zh

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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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/14—Dies

Definitions

  • the invention belongs to the field of edge trimming of a C-shaped mouth, in particular to a trimming die for a C-shaped mouth of a front lower control arm and a trimming method thereof.
  • the single-piece front lower control arm is one of the core parts of the MacPherson suspension most commonly used in mainstream vehicles at present, and is formed by stamping ultra-high-strength steel plates. Due to the needs of space layout, this kind of parts has unique geometric characteristics: C-shaped mouth has unique shape and high size requirements.
  • Fig. 1 is a schematic structural diagram of a front lower control arm in the prior art.
  • the front lower control arm has two C-shaped ports 10 .
  • the C-shaped mouth 10 usually adopts conventional stamping. It is difficult to ensure the trimming insert has sufficient strength while ensuring the dimensional accuracy of the trimming of the C-shaped mouth. Therefore, it is impossible to guarantee the life of the trimming insert and the repair of the stamping parts edge quality.
  • Fig. 2 is a schematic diagram 1 of a trimming method of a C-shaped mouth in the prior art.
  • Fig. 3 is a second schematic diagram of a trimming method of a C-shaped mouth in the prior art.
  • the conventional C-shaped mouth trimming method uses two trimmings from the outside of the part to the inside of the part.
  • Fig. 2 shows trimming for the first time, adopt trimming punch 23, move along punch direction A, carry out trimming for the first time to C-type mouth 10.
  • Fig. 3 shows the second trimming, adopt trimming punch 23, move along the punch movement direction A, carry out second trimming to C-type mouth 10.
  • Fig. 4 is a schematic diagram of a burr after trimming a C-shaped mouth in the prior art.
  • the trimming angles of the two side trimmings of this process are different, and there are gaps and burrs at the joint of the process, that is, the burrs 100 generated after the two trimmings, so the size and appearance requirements cannot be guaranteed.
  • the location of the C-shaped mouth is narrow, and it is difficult to set up the side trimming structure, which cannot guarantee the quality and stability of trimming.
  • the material strength of the part is high, the mold space is small, and the structural size and shape are limited, so the trimming edge of the C-shaped mouth is often damaged, and the maintenance cost is high.
  • the inventor of the present application has designed a trimming method for processing a C-shaped mouth in order to overcome the above technical problems.
  • the technical problem to be solved by the present invention is to provide a trimming method for processing a C-shaped mouth in order to overcome defects such as the difficulty in setting the side trimming structure of the C-shaped mouth in the prior art and the inability to ensure the quality and stability of the trimmed edge.
  • a punching die for the C-shaped mouth of the front lower control arm comprising a lower die and an upper die, characterized in that the lower die includes a lower die base, a die wedge mechanism, a trimming punch and a punch oblique
  • the wedge mechanism, the die wedge mechanism and the punch wedge mechanism are respectively slidably installed on the lower mold base, and a mounting bracket is formed between the die wedge mechanism and the punch wedge mechanism.
  • the upper part of the die cam mechanism is provided with a notch, and the second arm part of the front lower control arm is installed in the notch, so that the front lower control arm is installed across the die cam Institutional;
  • the upper die includes an upper die base, a die driving block and a punch driving block.
  • the die driving block cooperates with the die wedge mechanism to drive
  • the die wedge mechanism moves
  • the punch driving block cooperates with the punch wedge mechanism to drive the punch wedge mechanism to move, so that the trimming punch is aligned with the front lower control arm.
  • the C-shaped mouth is trimmed from the inside to the outside.
  • At least one oblique first driving surface is provided at both ends of one side of the die wedge mechanism, and the driving block of the die is matched with the first driving surface.
  • the driving force between the die driving block and the first driving surface causes the die cam mechanism to move.
  • the first driving surface is located on both sides of the notch.
  • the width of the notch is greater than the width of the second arm, and there is a gap between the inner wall surface of the side of the notch and the second arm.
  • At least one guide rail is provided on the lower mold base, at least one guide rail slide groove is provided at the bottom end of the die cam mechanism, and the die cam mechanism slides through the guide rail.
  • the slots are mounted on the rails.
  • a trimming groove is provided on the wall surface of the die wedge mechanism opposite to the first arm, and the shape of the trimming groove is mutually compatible with that of the first arm. matching, for fixing the position of the first arm.
  • At least one oblique second driving surface is provided on the outer surface of the punch cam mechanism, and the punch driving block and the second driving surface are matched with each other.
  • the pushing force between the die drive block and the second drive surface causes the punch cam mechanism to move.
  • the trimming punch includes a base body and a blade, and the blade is mounted on the base body through additive manufacturing.
  • the end of the blade is a circular arc surface.
  • the blade is made of tungsten carbide, titanium alloy, titanium-based composite material, iron-based composite material and metal-based ceramic material.
  • the present invention also provides a method for trimming the C-shaped mouth of the front lower control arm, which is characterized in that the trimming method adopts the above-mentioned trimming die for the C-shaped mouth of the front lower control arm, so Described trimming method comprises the following steps:
  • the die driving block of the upper die contacts and cooperates with the die wedge mechanism in the lower die, and drives the die wedge mechanism to slide close to and press the C on the front lower control arm. the first arm of the die;
  • the punch drive block of the upper die contacts and cooperates with the punch wedge mechanism in the lower die, drives the punch wedge mechanism to slide close to the front lower control arm, and passes the punch wedge mechanism to slide close to the front lower control arm.
  • the trimming punch provided on the wedge mechanism trims the C-shaped mouth;
  • the step S2 specifically includes: the pressing plate in the upper mold is in contact with the front lower control arm, and presses the front lower control arm.
  • the pressure of the pressing plate is 12t.
  • the step S3 specifically includes:
  • the driving surface of the die driving block is in contact with the driving surface of the die wedge mechanism, and relatively slides, so that the die wedge mechanism slides along the guide rail of the lower die;
  • the trimming groove of the die wedge mechanism is in close contact with the C-shaped mouth and keeps applying pressure.
  • the step S4 specifically includes:
  • the driving surface of the punch driving block is in contact with the driving surface of the punch wedge mechanism, and relatively slides, so that the punch wedge mechanism slides close to the C-shaped mouth;
  • the edge trimming punch is installed on the punch wedge mechanism, and with the movement of the punch wedge mechanism, the edge trimming punch completes the edge trimming of the C-shaped mouth.
  • the step S5 specifically includes:
  • the distance between the die wedge mechanism and the punch wedge mechanism in the step S1 is greater than 70 mm before trimming.
  • the distance between the die cam mechanism and the punch cam mechanism in step S4 is greater than or equal to 20 mm when modified.
  • the punching die for the C-shaped mouth of the front lower control arm of the present invention can ensure that the C-shaped mouth can be completed only after one trimming, and can not only improve the dimensional accuracy of the C-shaped mouth, but also improve efficiency.
  • the C-shaped mouth after trimming of the trimming die has no burrs and is consistent with the digital model.
  • the use of new materials for the punching die can effectively reduce the maintenance cost of the die, and at the same time obtain a good size and appearance.
  • the method for trimming the C-shaped mouth of the front lower control arm of the present invention can ensure that the C-shaped mouth can be completed after only one trimming, and can not only improve the dimensional accuracy of the C-shaped mouth, but also improve efficiency.
  • the trimming method for processing the C-shaped mouth there is no gap or burr on the trimmed C-shaped mouth, which is consistent with the digital model.
  • Fig. 1 is a schematic structural diagram of a front lower control arm in the prior art.
  • Fig. 2 is a schematic diagram 1 of a trimming method of a C-shaped mouth in the prior art.
  • Fig. 3 is a second schematic diagram of a trimming method of a C-shaped mouth in the prior art.
  • Fig. 4 is a schematic diagram of a burr after trimming a C-shaped mouth in the prior art.
  • Fig. 5 is a perspective view of the lower die in the trimming die for the C-shaped mouth of the front lower control arm according to the present invention.
  • Fig. 6 is a perspective view of the upper die in the trimming die for the C-shaped mouth of the front lower control arm according to the present invention.
  • Fig. 7 is a perspective view 1 of the die wedge mechanism in the trimming die for the C-shaped mouth of the front lower control arm according to the present invention.
  • Fig. 8 is a second perspective view of the die wedge mechanism in the trimming die for the C-shaped mouth of the front lower control arm according to the present invention.
  • Fig. 9 is a perspective view of the trimming punch used in the trimming die of the C-shaped mouth of the front lower control arm according to the present invention.
  • Fig. 10 is a schematic diagram of the use state of the trimming die for the C-shaped mouth of the front lower control arm according to the present invention.
  • Fig. 11 is a flow chart of the method for trimming the C-shaped mouth of the front lower control arm according to the present invention.
  • Fig. 5 is a perspective view of the lower die in the trimming die for the C-shaped mouth of the front lower control arm according to the present invention.
  • Fig. 6 is a perspective view of the upper die in the trimming die for the C-shaped mouth of the front lower control arm according to the present invention.
  • the present invention discloses a punching die for the C-shaped mouth of the front lower control arm, including a lower die 20 and an upper die 30 .
  • lower mold 20 comprises lower mold base 21, die wedge mechanism 22, trimming punch 23 and punch wedge mechanism 24, and die wedge mechanism 22 and punch wedge mechanism 24 are respectively slidably installed on the lower mold Seat 21.
  • An installation space B is formed between the die wedge mechanism 22 and the punch wedge mechanism 24, the first arm portion 41 of the front lower control arm 40 to be processed is installed in the installation space B, and the trimming punch 23 is installed on the convex mold.
  • the trimming punch 23 enters and exits the C-shaped mouth 43 of the first arm portion 41 .
  • the upper part of the die wedge mechanism 22 is provided with a notch 221, and the second arm part 42 of the front lower control arm 40 is installed in the notch 221, so that the front lower control arm 40 is mounted on the die wedge mechanism 22 across .
  • the upper die 30 includes an upper die base 31, a die drive block 32 and a punch drive block 33.
  • the die drive block 32 cooperates with the die wedge mechanism 22 to drive the die
  • the die wedge mechanism 22 moves
  • the punch drive block 33 cooperates with the punch wedge mechanism 24 to drive the punch wedge mechanism 24 to move, so that the trimming punch 23 is from the inside to the C-shaped port 43 of the front lower control arm 40. Trimming outside.
  • the trimming punch 23 is located between the two C-shaped mouths of the part, that is, the trimming punch 23 moves from the inside of the part to the outside of the part during the trimming process. And finish trimming.
  • the upper mold 30 may also be provided with a pressing plate 34 , when the upper mold 30 and the lower mold 20 are closed, the pressing plate 24 is used to press the parts to be processed, such as the front lower control arm 40 .
  • the width of the installation space B (that is, the space formed 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 , it should be greater than 70mm before trimming (that is, the stroke of the die wedge mechanism 22 and the punch wedge mechanism 24 is 0), so as to ensure that the putting in and taking out process of the front lower control arm 40 is normal.
  • the minimum distance between the die wedge mechanism 22 and the punch wedge mechanism 24 should be greater than or equal to 20mm.
  • Fig. 7 is a perspective view 1 of the die wedge mechanism in the trimming die for the C-shaped mouth of the front lower control arm according to the present invention.
  • Fig. 8 is a second perspective view of the die wedge mechanism in the trimming die for the C-shaped mouth of the front lower control arm according to the present invention.
  • At least one oblique first driving surface 222 is provided on one side and two ends of the die wedge mechanism 22, and the die driving block 32 matches the first driving surface 222. , through the driving force between the die driving block 32 and the first driving surface 222 , the die wedge mechanism 22 moves.
  • the first driving surface 222 is located on both sides of the notch 221 .
  • the width of the notch 221 is greater than the width of the second arm portion 42 , and there is a gap between the inner wall surface of the side portion of the notch 221 and the second arm portion 42 .
  • the size of the notch 221 should be larger than the part (for example, greater than 200 mm), so that it can completely straddle the part and completely avoid the part during the movement without contacting the part.
  • Parts here are, for example, front lower control arms.
  • the structure of the die wedge mechanism 22 is made to straddle the part because of the limitation of the shape of the part itself, and a structure of sufficient size cannot be arranged on the same side of the part, so the structure of the die cam mechanism 22 straddles the part. Form is an important part of the method of repairing the C-shaped mouth.
  • the lower mold base 21 is provided with at least one guide rail 25
  • the bottom end of the die wedge mechanism 22 is provided with at least one guide rail slide groove 223
  • the die wedge mechanism 22 is installed on the guide rail 25 through the guide rail slide groove 223 .
  • the die wedge mechanism 22 can only move in the direction limited by the guide rail 25 (for example, move in the direction of the arrow shown in FIG. 7 ), and the movement in other directions is limited, and the error is less than 0.05 mm.
  • the punch wedge mechanism 24 can also be slidably connected to the lower mold base 21 through guide rails.
  • a trimming groove 224 is also provided on the wall surface of the die wedge mechanism 22 opposite to the first arm portion 41 of the front lower control arm 40, and the shape of the trimming groove 224 matches the shape of the first arm portion 41. , for fixing the position of the first arm portion 41 .
  • At least one oblique second driving surface 241 is provided on the outer surface of the punch wedge mechanism 24 to match the punch driving block 33 with the second driving surface 241 .
  • the punch wedge mechanism 24 is moved by the driving force between the punch driving block 33 and the second driving surface 241 .
  • Fig. 9 is a perspective view of the trimming punch used in the trimming die of the C-shaped mouth of the front lower control arm according to the present invention.
  • the trimming punch 23 includes a base body 231 and a blade portion 232 , and the blade portion 232 is installed on the base body 231 through additive manufacturing.
  • the end of the blade portion 232 is preferably an arc surface.
  • the trimming punch 23 is made by additive manufacturing.
  • the edge 232 of the trimming punch 23 is made of special materials, and the area in contact with the workpiece is attached to the substrate 231 with good toughness by using 3D printed high-strength alloy, which not only ensures the shear strength of the edge but also has sufficient The toughness greatly improves the service life of the trimming punch.
  • the shape of the junction line 233 is a quadratic curve, so as to ensure the reliability of the performance of the junction.
  • the blade portion 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 base body 231 by laser 3D printing technology.
  • the front lower control arm made of high-strength steel is used in many models.
  • This trimming method can simplify the trimming process of the C-shaped mouth and improve production efficiency.
  • the application of new materials can effectively reduce mold maintenance costs. Get good size and good looks at the same time.
  • Fig. 10 is a schematic diagram of the use state of the trimming die for the C-shaped mouth of the front lower control arm according to the present invention.
  • the punching die used for C-type mouth processing in the present invention adopts a die wedge mechanism, which allows the die wedge mechanism to pass through the lower part of the part to be processed through the wedge structure, and this structure solves the problem of There is insufficient space on the left side of the C-shaped mouth 43 to install a wedge.
  • the trimming die 224 moves to the right along the direction of the arrow shown in FIG. 7 under the push of the die wedge structure 22. Press the C-shaped port 41 tightly.
  • the edge trimming punch 23 moves to the left along the direction of the arrow shown in Figure 7 to trim the edge, and the edge trimming punch 23 retreats to the right after the edge trimming.
  • the trimming die 224 retreats under the drive of the die wedge structure 22 to complete the trimming of the C-shaped mouth 43 .
  • the punching die for the C-shaped mouth of the front lower control arm can ensure that the C-shaped mouth can be completed after only one trimming, which can not only improve the dimensional accuracy of the C-shaped mouth, but also improve the efficiency. There are no gaps or burrs on the C-shaped mouth after punching with this punching die, which is consistent with the digital model.
  • the present invention is used for the trimming mold of C-shaped mouth of front lower control arm and can guarantee that C-shaped mouth can be finished only through trimming once, can improve the dimensional accuracy of C-shaped mouth, can improve efficiency again.
  • the C-shaped mouth after trimming of the trimming die has no burrs and is consistent with the digital model.
  • the use of new materials for the punching die can effectively reduce the maintenance cost of the die, and at the same time obtain a good size and appearance.
  • Fig. 11 is a flow chart of the method for trimming the C-shaped mouth of the front lower control arm according to the present invention.
  • the present invention also discloses a trimming method for the C-shaped mouth of the front lower control arm, using the above-mentioned trimming mold for the C-shaped mouth of the front lower control arm, the trimming method includes the following step:
  • Step S1 Put the front lower control arm 40 with a C-shaped mouth to be processed into the lower mold 20 of the punching die, and the first arm part 41 with a C-shaped mouth 43 on the front lower control arm 40 is located on the lower mold 20 In the installation space B between the die cam mechanism 22 and the punch cam mechanism 24, the front lower control arm 40 is installed across the die cam mechanism 22.
  • the distance between the die wedge mechanism 22 and the punch wedge mechanism 24 is greater than 70mm before trimming.
  • Step S 2 the press machine moves downwards, so that the upper mold 30 of the punching mold moves downwards as a whole, and compresses the front lower control arm 40 .
  • the step S2 may specifically include: the pressing plate 34 in the upper mold 30 contacts the front lower control arm 40 and presses the front lower control arm 40 .
  • the pressure of the pressing plate 210 is preferably 12t.
  • Step S 3 the die drive block 32 of the upper die 30 contacts and cooperates with the die wedge mechanism 22 in the lower die 20 , and drives the die wedge mechanism 22 to slide close to and press the front lower control arm 40 with a C-shaped The first arm portion 41 of the mouth 43 .
  • said step S3 may also specifically include:
  • the driving surface of the die driving block 32 is in contact with the driving face of the die wedge mechanism 22, and relative sliding occurs, so that the die wedge mechanism 22 slides along the guide rail 25 of the lower die 20 (as shown by the arrow in FIG. 10 direction to the right);
  • the trimming groove 224 of the die wedge mechanism 22 is in close contact with the C-shaped mouth 43 and keeps applying pressure.
  • edge trimming die 224 moves to the right along the arrow direction in Figure 10 under the promotion of the die wedge mechanism 22, and when the stroke of the die wedge mechanism 224 reaches the maximum, the edge trimming die 224 is close to C-type port 43 and maintain a certain pressure.
  • Step S 4 the punch driving block 33 of the upper mold 30 contacts and cooperates with the punch wedge mechanism 24 in the lower mold 20 , drives the punch wedge mechanism 24 to slide close to the front lower control arm 40 , and passes through the punch wedge mechanism 24
  • the edge trimming punch 23 provided on the top trims the C-shaped mouth 43.
  • said step S4 may also specifically include:
  • the edge trimming punch 23 is installed on the punch wedge mechanism 24 . With the movement of the punch wedge mechanism 24 , the edge trimming punch 23 finishes trimming the C-shaped mouth 43 .
  • the distance between the die wedge mechanism 22 and the punch wedge mechanism 24 is greater than or equal to 20 mm when modified.
  • Step S 5 the press moves upward, the upper mold 30 is separated from the lower mold 20 , and the front lower control arm 40 is taken out.
  • said step S5 may also specifically include:
  • the driving surface of the die driving block 32 is separated from the driving face of the die wedge mechanism 22, and the die wedge mechanism 22 returns to the initial installation position under the action of its own force source (that is, the die wedge mechanism 22 The stroke of the position is 0);
  • the trimming groove 224 is separated from the front lower control arm 40 .
  • the edge portion of the trimming punch 23 is made of tungsten carbide, titanium alloy, titanium-based composite material, iron-based composite material and metal-based ceramic material.
  • the trimming method for processing C-shaped mouths of the present invention can ensure that the C-shaped mouths can be completed only by one-time trimming, and can not only improve the dimensional accuracy of the C-shaped mouths, but also improve efficiency. Through the use of the trimming method for processing the C-shaped mouth, there is no gap or burr on the trimmed C-shaped mouth, which is consistent with the digital model.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Punching Or Piercing (AREA)

Abstract

一种用于前下控制臂C型口的修冲模具及其修边方法，修冲模具包括下模和上模，下模包括下模座、凹模斜楔机构、修边凸模和凸模斜楔机构，凹模斜楔机构和凸模斜楔机构分别滑动地安装在下模座上，凹模斜楔机构和凸模斜楔机构之间形成一安装空间，前下控制臂的第一臂部安装在安装空间内，修边凸模***第一臂部的C型口内；前下控制臂的第二臂部安装在凹模斜楔机构的凹口内，前下控制臂横跨地安装在凹模斜楔机构上；凸模驱动块驱动凸模斜楔机构移动，使得修边凸模对前下控制臂的C型口由内至外进行修边。

Description

用于前下控制臂C型口的修冲模具及其修边方法 技术领域
本发明属于C型口的修边领域，特别涉及一种用于前下控制臂C型口的修冲模具及其修边方法。
背景技术
在现有技术中，单片式前下控制臂是目前主流车型中最常用的麦弗逊悬架中的核心零件之一，由超高强钢钢板冲压成形而成。这类零件由于空间布置的需要，具备独特的几何特征：C型口造型独特，尺寸要求高。
图1为现有技术中前下控制臂的结构示意图。
如图1所示，前下控制臂具有两个C型口10。目前C型口10通常采用常规的冲压，C型口的修边很难在保证尺寸精度的同时保证修边镶块具备足够的强度，因此无法同时保证修边镶块的寿命和冲压件的修边质量。
图2为现有技术中C型口的修边方法的示意图一。图3为现有技术中C型口的修边方法的示意图二。
如图2和图3所示，常规的C型口修边方法采用从零件外侧向零件内侧分两次修边。图2表示第一次修边，采用修边凸模23，沿凸模运动方向A运动，对C型口10进行第一次修边。图3表示第二次修边，采用修边凸模23，沿凸模运动方向A运动，对C型口10进行第二次修边。
图4为现有技术中C型口修边后的毛刺示意图。
如图4所示，这种工艺两次侧修边的修冲角度不同，工艺接刀处有缺口和毛刺，即两次修边后产生的毛刺100，所以不能保证尺寸和外观要求。
同时，因为零件造型的限制，C型口的位置空间狭小，侧修边结构设置困难，不能保证修边的质量和稳定。另外，零件的材料强度高，模具空间小，结构尺寸和形状受限，因此C型口的修边刃口经常损坏，维护成本较高。
有鉴于此，本申请发明人设计了一种用于加工C型口的修边方法，以期克服上述技术问题。
发明内容
本发明要解决的技术问题是为了克服现有技术中C型口的侧修边结构设置困难，不能保证修边的质量和稳定等缺陷，提供一种用于加工C型口的修边方法。
本发明是通过下述技术方案来解决上述技术问题的：
一种用于前下控制臂C型口的修冲模具，包括下模和上模，其特点在于：所述下模包括下模座、凹模斜楔机构、修边凸模和凸模斜楔机构，所述凹模斜楔机构和所述凸模斜楔机构分别滑动地安装在所述下模座上，所述凹模斜楔机构和所述凸模斜楔机构之间形成一安装空间，待加工的前下控制臂的第一臂部安装在所述安装空间内，所述修边凸模安装在所述凸模斜楔机构的内壁面上，且所述修边凸模***所述第一臂部的C型口内；
所述凹模斜楔机构的上部开设有一凹口，所述前下控制臂的第二臂部安装在所述凹口内，使得所述前下控制臂横跨地安装在所述凹模斜楔机构上；
所述上模包括上模座、凹模驱动块和凸模驱动块，所述上模与所述下模匹配合模时，所述凹模驱动块与所述凹模斜楔机构配合，驱动所述凹模斜楔机构移动，所述凸模驱动块与所述凸模斜楔机构配合，驱动所述凸模斜楔机构移动，使得所述修边凸模对所述前下控制臂的C型口由内至外进行修边。
根据本发明的一个实施例，所述凹模斜楔机构的一侧两端分别设置有至少一个斜向的第一驱动面，所述凹模驱动块与所述第一驱动面相互匹配，通过所述凹模驱动块和所述第一驱动面之间的推动力，使得所述凹模斜楔机构移动。
根据本发明的一个实施例，所述第一驱动面位于所述凹口的两侧。
根据本发明的一个实施例，所述凹口的宽度大于所述第二臂部的宽度，所述凹口的侧部内壁面与所述第二臂部之间留有间隙。
根据本发明的一个实施例，所述下模座上设置有至少一个导轨，所述凹模斜楔机构的底端设置有至少一个导轨滑槽，所述凹模斜楔机构通过所述导轨滑槽安装在所述导轨上。
根据本发明的一个实施例，所述凹模斜楔机构上与所述第一臂部相对的壁面上开设有一修边凹槽，所述修边凹槽与所述第一臂部的形状相互匹配，用于固定所述第一臂部的位置。
根据本发明的一个实施例，所述凸模斜楔机构的外侧面设置有至少一个斜向 的第二驱动面，所述凸模驱动块与所述第二驱动面相互匹配，通过所述凸模驱动块和所述第二驱动面之间的推动力，使得所述凸模斜楔机构移动。
根据本发明的一个实施例，所述修边凸模包括基体和刃部，所述刃部通过增材制造的方式安装在所述基体上。
根据本发明的一个实施例，所述刃部的端部为圆弧面。
根据本发明的一个实施例，所述刃部采用碳化钨、钛合金、钛基复合材料、铁基复合材料和金属基陶瓷材料。
本发明还提供了一种用于前下控制臂C型口的修边方法，其特点在于，所述修边方法采用如上所述的用于前下控制臂C型口的修冲模具，所述修边方法包括以下步骤：
S 1、将待加工带C型口的前下控制臂放入修冲模具的下模中，所述前下控制臂上带有C型口的第一臂部位于所述下模的凹模斜楔机构和凸模斜楔机构之间的所述安装空间内，所述前下控制臂的第二臂部安装在所述凹模斜楔机构的凹口内，使得所述前下控制臂横跨地安装在所述凹模斜楔机构上；
S 2、压机向下运动，使得修冲模具的上模整体向下运动，压紧所述前下控制臂；
S 3、所述上模的凹模驱动块与所述下模中的凹模斜楔机构接触配合，驱动所述凹模斜楔机构滑动靠近并压紧所述前下控制臂上带有C型口的第一臂部；
S 4、所述上模的凸模驱动块与所述下模中的凸模斜楔机构接触配合，驱动所述凸模斜楔机构滑动靠近所述前下控制臂，通过所述凸模斜楔机构上设置的修边凸模对所述C型口进行修边；
S 5、压机向上运动，所述上模与所述下模分离，取出所述前下控制臂。
根据本发明的一个实施例，所述步骤S 2具体包括：所述上模中的压料板与所述前下控制臂接触，并压紧所述前下控制臂。
根据本发明的一个实施例，所述压料板的压力为12t。
根据本发明的一个实施例，所述步骤S 3具体包括：
S 31、所述凹模驱动块的驱动面与所述凹模斜楔机构的驱动面接触，且发生相对滑动，使得所述凹模斜楔机构沿所述下模的导轨滑动；
S 32、所述凹模斜楔机构的修边凹槽贴紧所述C型口并保持施压。
根据本发明的一个实施例，所述步骤S 4具体包括：
S 41、所述凸模驱动块的驱动面与所述凸模斜楔机构的驱动面接触，且发生相对滑动，使得所述凸模斜楔机构滑动靠近所述C型口；
S 42、所述修边凸模安装在所述凸模斜楔机构上，随着所述凸模斜楔机构的运动，所述修边凸模完成对所述C型口的修边。
根据本发明的一个实施例，所述步骤S 5具体包括：
S 51、压机向上运动，所述凸模驱动块的驱动面与所述凸模斜楔机构的驱动面分离，所述凸模斜楔机构在自身力源的作用下回退至初始安装位置；
S 52、所述凹模驱动块的驱动面与所述凹模斜楔机构的驱动面分离，所述凹模斜楔机构在自身力源的作用下回退至初始安装位置；
S 53、所述上模的压料板与所述前下控制臂的表面分离，从所述修冲模具中取出所述前下控制臂。
根据本发明的一个实施例，所述步骤S 1中所述凹模斜楔机构和所述凸模斜楔机构之间的距离在进行修边之前大于70mm。
根据本发明的一个实施例，所述步骤S 4中所述凹模斜楔机构和所述凸模斜楔机构之间的距离在进行修改时大于等于20mm。
本发明的有益效果：
本发明用于前下控制臂C型口的修冲模具可以保证C型口只经过一次修边就能完成，既能提高C型口的尺寸精度，又能提高效率。所述修冲模具修边后的C型口，无毛刺，与数模保持一致。同时，所述修冲模具采用新型材料可以有效地降低模具维护成本，同时获得良好的尺寸和外观。
本发明用于前下控制臂C型口的修边方法，可以保证C型口只经过一次修边就能完成，既能提高C型口的尺寸精度，又能提高效率。通过所述用于加工C型口的修边方法的使用，修冲后的C型口上没有缺口或毛刺，与数模保持一致。
附图概述
本发明上述的以及其他的特征、性质和优势将通过下面结合附图和实施例的描述而变的更加明显，在附图中相同的附图标记始终表示相同的特征，其中：
图1为现有技术中前下控制臂的结构示意图。
图2为现有技术中C型口的修边方法的示意图一。
图3为现有技术中C型口的修边方法的示意图二。
图4为现有技术中C型口修边后的毛刺示意图。
图5为本发明用于前下控制臂C型口的修冲模具中下模的立体图。
图6为本发明用于前下控制臂C型口的修冲模具中上模的立体图。
图7为本发明用于前下控制臂C型口的修冲模具中凹模斜楔机构的立体图一。
图8为本发明用于前下控制臂C型口的修冲模具中凹模斜楔机构的立体图二。
图9为本发明用于前下控制臂C型口的修冲模具中修边凸模的立体图。
图10为本发明用于前下控制臂C型口的修冲模具的使用状态示意图。
图11为本发明用于前下控制臂C型口的修边方法的流程图。
本发明的较佳实施方式
下面结合实施例和附图对本发明做进一步说明。
图5为本发明用于前下控制臂C型口的修冲模具中下模的立体图。图6为本发明用于前下控制臂C型口的修冲模具中上模的立体图。
如图5和图6所示，本发明公开了一种用于前下控制臂C型口的修冲模具，包括下模20和上模30。其中，下模20包括下模座21、凹模斜楔机构22、修边凸模23和凸模斜楔机构24，凹模斜楔机构22和凸模斜楔机构24分别滑动地安装在下模座21上。凹模斜楔机构22和凸模斜楔机构24之间形成一安装空间B，待加工的前下控制臂40的第一臂部41安装在安装空间B内，修边凸模23安装在凸模斜楔机构24的内壁面上，且修边凸模23出入所述第一臂部41的C型口43内。凹模斜楔机构22的上部开设有一凹口221，前下控制臂40的第二臂部42安装在凹口221内，使得前下控制臂40横跨地安装在凹模斜楔机构22上。
上模30包括上模座31、凹模驱动块32和凸模驱动块33，将上模30与下模20匹配合模时，凹模驱动块32与凹模斜楔机构22配合，驱动凹模斜楔机构22移动，凸模驱动块33与凸模斜楔机构24配合，驱动凸模斜楔机构24移动，使得修边凸模23对前下控制臂40的C型口43由内至外进行修边。
在针对C型口的修边开始前和修边结束后，修边凸模23位于零件的两个C型口之间的，即修边过程中修边凸模23是从零件内向零件外运动而完成修边的。
另外，上模30上还可以设置有压料板34，当上模30和下模20合模时，压料板24用于压紧待加工零件，例如前下控制臂40。
此处，安装空间B(即凹模斜楔机构22和凸模斜楔机构24之间围设形成的空间)的宽度为凹模斜楔机构22和凸模斜楔机构24之间的最小距离，其在修边之前(即凹模斜楔机构22和凸模斜楔机构24的行程都为0)应大于70mm，以保证前下控制臂40的放入和拿出过程正常。
在修边时(即凹模斜楔机构22和凸模斜楔机构24的行程达到最大)，凹模斜楔机构22和凸模斜楔机构24之间的最小距离应大于等于20mm。
图7为本发明用于前下控制臂C型口的修冲模具中凹模斜楔机构的立体图一。图8为本发明用于前下控制臂C型口的修冲模具中凹模斜楔机构的立体图二。
如图7和图8所示，优选地，凹模斜楔机构22的一侧两端分别设置有至少一个斜向的第一驱动面222，凹模驱动块32与第一驱动面222相互匹配，通过凹模驱动块32和第一驱动面222之间的推动力，使得凹模斜楔机构22移动。
优选地，第一驱动面222位于凹口221的两侧。
特别地，此处凹口221的宽度大于第二臂部42的宽度，凹口221的侧部内壁面与第二臂部42之间留有间隙。
也就是说，凹口221的大小要大于零件(例如大于200mm)，可以完全跨过零件并在运动过程中完全避让开零件，不与零件接触。这里的零件例如为前下控制臂。
凹模斜楔机构22的结构做成跨过零件的形式是因为零件本身造型的限制，在零件的同一侧无法布置足够大小的结构，因此凹模斜楔机构22结构的这种跨过零件的形式是修冲C型口方法的一个重要部分。
进一步地，下模座21上设置有至少一个导轨25，凹模斜楔机构22的底端设置有至少一个导轨滑槽223，凹模斜楔机构22通过导轨滑槽223安装在导轨25上。这样凹模斜楔机构22只能沿导轨25限制的方向运动(例如沿图7所示的箭头方向移动)，其他方向的运动受到限制，误差小于0.05mm。
同理，凸模斜楔机构24也可以通过导轨滑动连接在下模座21上。
另外，在凹模斜楔机构22上与前下控制臂40的第一臂部41相对的壁面上还开设有一修边凹槽224，修边凹槽224与第一臂部41的形状相互匹配，用于固定 第一臂部41的位置。
如图5和图6所示，优选地，在凸模斜楔机构24的外侧面设置有至少一个斜向的第二驱动面241，将凸模驱动块33与第二驱动面241相互匹配，通过凸模驱动块33和第二驱动面241之间的推动力，使得凸模斜楔机构24移动。
图9为本发明用于前下控制臂C型口的修冲模具中修边凸模的立体图。
如图9所示，优选地，修边凸模23包括基体231和刃部232，将刃部232通过增材制造的方式安装在基体231上。刃部232的端部优选为圆弧面。
具体地说，由于修边凸模23的设计空间受到严格限制，在保证凸模具备足够韧性的同时，还需要保证修边刃口处具备足够的硬度。因此，修边凸模23采用增材制造的方式制作。修边凸模23的刃部232由特殊材料制成，其与工件接触的区域采用3D打印的高强度合金附着在具备良好韧性的基体231之上，既保证刃口的剪切强度又具备足够的韧性，大幅提高修边凸模的寿命。刃部232和基体231的接合处，接合线233的形状为二次曲线，以保证接合处性能的可靠性。
其中，刃部232优选地采用碳化钨、钛合金、钛基复合材料、铁基复合材料和金属基陶瓷材料，通过激光3D打印技术附着在基体231上。
高强钢材料制成的前下控制臂在许多车型中都有应用，采用此种修边方式可以简化C型口的修边工艺，提高生产效率，新型材料的应用可以有效地降低模具维护成本，同时获得良好的尺寸和外观。
图10为本发明用于前下控制臂C型口的修冲模具的使用状态示意图。
如图10所示，本发明用于C型口加工的修冲模具采用了凹模斜楔机构，通过斜楔结构使得凹模斜楔机构从待加工零件的下部穿过，这种结构解决了C型口43左侧空间不足无法设置斜楔的问题，修C型口43时修边凹模224在凹模斜楔结构22的推动下先沿图7中所示箭头方向向右侧运动，压紧C型口41。修边凸模23再沿图7中所示箭头方向向左侧运动进行修边，修边后修边凸模23先向右侧回退。修边凹模224在凹模斜楔结构22的带动下回退，完成C型口43的修边。
所述用于前下控制臂C型口的修冲模具可以保证C型口只经过一次修边就能完成，既能提高C型口的尺寸精度，又能提高效率。使用这种修冲模具修冲后的C型口上没有缺口或毛刺，与数模保持一致。
综上所述，本发明用于前下控制臂C型口的修冲模具可以保证C型口只经过 一次修边就能完成，既能提高C型口的尺寸精度，又能提高效率。所述修冲模具修边后的C型口，无毛刺，与数模保持一致。
同时，所述修冲模具采用新型材料可以有效地降低模具维护成本，同时获得良好的尺寸和外观。
图11为本发明用于前下控制臂C型口的修边方法的流程图。
如图11所示，本发明还公开了一种用于前下控制臂C型口的修边方法，采用上述用于前下控制臂C型口的修边模具，所述修边方法包括以下步骤：
步骤S 1、将待加工带C型口的前下控制臂40放入修冲模具的下模20中，前下控制臂40上带有C型口43的第一臂部41位于下模20的凹模斜楔机构22和凸模斜楔机构24之间的安装空间B内，使得前下控制臂40横跨地安装在凹模斜楔机构22上。
其中，凹模斜楔机构22和凸模斜楔机构24之间的距离在进行修边之前大于70mm。
步骤S 2、压机向下运动，使得修冲模具的上模30整体向下运动，压紧前下控制臂40。
优选地，所述步骤S 2还可以具体包括：上模30中的压料板34与前下控制臂40接触，并压紧前下控制臂40。
本实施例中压料板210的压力优选地为12t。
步骤S 3、上模30的凹模驱动块32与下模20中的凹模斜楔机构22接触配合，驱动凹模斜楔机构22滑动靠近并压紧前下控制臂40上带有C型口43的第一臂部41。
优选地，所述步骤S 3还可以具体包括：
S 31、凹模驱动块32的驱动面与凹模斜楔机构22的驱动面接触，且发生相对滑动，使得凹模斜楔机构22沿下模20的导轨25滑动(如沿图10中箭头方向向右侧运动)；
S 32、凹模斜楔机构22的修边凹槽224贴紧C型口43并保持施压。
进一步具体地，修边凹模224在凹模斜楔机构22的推动下沿图10中箭头方向向右侧运动，在凹模斜楔机构224的行程达到最大时，修边凹模224贴紧C型口43并保持一定压力。
步骤S 4、上模30的凸模驱动块33与下模20中的凸模斜楔机构24接触配合，驱动凸模斜楔机构24滑动靠近前下控制臂40，通过凸模斜楔机构24上设置的修边凸模23对C型口43进行修边。
优选地，所述步骤S 4还可以具体包括：
S 41、凸模驱动块33的驱动面与凸模斜楔机构24的驱动面接触，且发生相对滑动，使得凸模斜楔机构24滑动靠近C型口43(如沿图10中箭头方向向左侧运动)；
S 42、修边凸模23安装在凸模斜楔机构24上，随着凸模斜楔机构24的运动，修边凸模23完成对C型口43的修边。
当凸模斜楔结构的行程达到最大时，完成对C型口43的修边。
其中，凹模斜楔机构22和凸模斜楔机构24之间的距离在进行修改时大于等于20mm。
步骤S 5、压机向上运动，上模30与下模20分离，取出前下控制臂40。
优选地，所述步骤S 5还可以具体包括：
S 51、压机向上运动，凸模驱动块33的驱动面与凸模斜楔机构24的驱动面分离，凸模斜楔机构24在自身力源的作用下回退至初始安装位置(即凸模斜楔机构24的行程为0的位置)；
S 52、凹模驱动块32的驱动面与凹模斜楔机构22的驱动面分离，凹模斜楔机构22在自身力源的作用下回退至初始安装位置(即凹模斜楔机构22的行程为0的位置)；
此时修边凹槽224与前下控制臂40分离。
S 53、上模30的压料板34与前下控制臂40的表面分离，从所述修冲模具中取出前下控制臂40。
另外，优选地，修边凸模23的刃部采用碳化钨、钛合金、钛基复合材料、铁基复合材料和金属基陶瓷材料。
本发明用于加工C型口的修边方法，可以保证C型口只经过一次修边就能完成，既能提高C型口的尺寸精度，又能提高效率。通过所述用于加工C型口的修边方法的使用，修冲后的C型口上没有缺口或毛刺，与数模保持一致。
虽然以上描述了本发明的具体实施方式，但是本领域的技术人员应当理解， 这些仅是举例说明，本发明的保护范围是由所附权利要求书限定的。本领域的技术人员在不背离本发明的原理和实质的前提下，可以对这些实施方式作出多种变更或修改，但这些变更和修改均落入本发明的保护范围。

Claims (18)

  1. 一种用于前下控制臂C型口的修冲模具，包括下模和上模，其特征在于：所述下模包括下模座、凹模斜楔机构、修边凸模和凸模斜楔机构，所述凹模斜楔机构和所述凸模斜楔机构分别滑动地安装在所述下模座上，所述凹模斜楔机构和所述凸模斜楔机构之间形成一安装空间，待加工的前下控制臂的第一臂部安装在所述安装空间内，所述修边凸模安装在所述凸模斜楔机构的内壁面上，且所述修边凸模***所述第一臂部的C型口内；
    所述凹模斜楔机构的上部开设有一凹口，所述前下控制臂的第二臂部安装在所述凹口内，使得所述前下控制臂横跨地安装在所述凹模斜楔机构上；
    所述上模包括上模座、凹模驱动块和凸模驱动块，所述上模与所述下模匹配合模时，所述凹模驱动块与所述凹模斜楔机构配合，驱动所述凹模斜楔机构移动，所述凸模驱动块与所述凸模斜楔机构配合，驱动所述凸模斜楔机构移动，使得所述修边凸模对所述前下控制臂的C型口由内至外进行修边。
  2. 如权利要求1所述的用于前下控制臂C型口的修冲模具，其特征在于，所述凹模斜楔机构的一侧两端分别设置有至少一个斜向的第一驱动面，所述凹模驱动块与所述第一驱动面相互匹配，通过所述凹模驱动块和所述第一驱动面之间的推动力，使得所述凹模斜楔机构移动。
  3. 如权利要求2所述的用于前下控制臂C型口的修冲模具，其特征在于，所述第一驱动面位于所述凹口的两侧。
  4. 如权利要求3所述的用于前下控制臂C型口的修冲模具，其特征在于，所述凹口的宽度大于所述第二臂部的宽度，所述凹口的侧部内壁面与所述第二臂部之间留有间隙。
  5. 如权利要求1所述的用于前下控制臂C型口的修冲模具，其特征在于，所述下模座上设置有至少一个导轨，所述凹模斜楔机构的底端设置有至少一个导轨滑 槽，所述凹模斜楔机构通过所述导轨滑槽安装在所述导轨上。
  6. 如权利要求2所述的用于前下控制臂C型口的修冲模具，其特征在于，所述凹模斜楔机构上与所述第一臂部相对的壁面上开设有一修边凹槽，所述修边凹槽与所述第一臂部的形状相互匹配，用于固定所述第一臂部的位置。
  7. 如权利要求1所述的用于前下控制臂C型口的修冲模具，其特征在于，所述凸模斜楔机构的外侧面设置有至少一个斜向的第二驱动面，所述凸模驱动块与所述第二驱动面相互匹配，通过所述凸模驱动块和所述第二驱动面之间的推动力，使得所述凸模斜楔机构移动。
  8. 如权利要求1所述的用于前下控制臂C型口的修冲模具，其特征在于，所述修边凸模包括基体和刃部，所述刃部通过增材制造的方式安装在所述基体上。
  9. 如权利要求8所述的用于前下控制臂C型口的修冲模具，其特征在于，所述刃部的端部为圆弧面。
  10. 如权利要求9所述的用于前下控制臂C型口的修冲模具，其特征在于，所述刃部采用碳化钨、钛合金、钛基复合材料、铁基复合材料和金属基陶瓷材料。
  11. 一种用于前下控制臂C型口的修边方法，其特征在于，所述修边方法采用如上述权利要求1-10任意一项所述的用于前下控制臂C型口的修冲模具，所述修边方法包括以下步骤：
    S 1、将待加工带C型口的前下控制臂放入修冲模具的下模中，所述前下控制臂上带有C型口的第一臂部位于所述下模的凹模斜楔机构和凸模斜楔机构之间的所述安装空间内，所述前下控制臂的第二臂部安装在所述凹模斜楔机构的凹口内，使得所述前下控制臂横跨地安装在所述凹模斜楔机构上；
    S 2、压机向下运动，使得修冲模具的上模整体向下运动，压紧所述前下控制臂；
    S 3、所述上模的凹模驱动块与所述下模中的凹模斜楔机构接触配合，驱动所述凹模斜楔机构滑动靠近并压紧所述前下控制臂上带有C型口的第一臂部；
    S 4、所述上模的凸模驱动块与所述下模中的凸模斜楔机构接触配合，驱动所述凸模斜楔机构滑动靠近所述前下控制臂，通过所述凸模斜楔机构上设置的修边凸模对所述C型口进行修边；
    S 5、压机向上运动，所述上模与所述下模分离，取出所述前下控制臂。
  12. 如权利要求11所述的用于前下控制臂C型口的修边方法，其特征在于，所述步骤S 2具体包括：所述上模中的压料板与所述前下控制臂接触，并压紧所述前下控制臂。
  13. 如权利要求12所述的用于前下控制臂C型口的修边方法，其特征在于，所述压料板的压力为12t。
  14. 如权利要求11所述的用于前下控制臂C型口的修边方法，其特征在于，所述步骤S 3具体包括：
    S 31、所述凹模驱动块的驱动面与所述凹模斜楔机构的驱动面接触，且发生相对滑动，使得所述凹模斜楔机构沿所述下模的导轨滑动；
    S 32、所述凹模斜楔机构的修边凹槽贴紧所述C型口并保持施压。
  15. 如权利要求11所述的用于前下控制臂C型口的修边方法，其特征在于，所述步骤S 4具体包括：
    S 41、所述凸模驱动块的驱动面与所述凸模斜楔机构的驱动面接触，且发生相对滑动，使得所述凸模斜楔机构滑动靠近所述C型口；
    S 42、所述修边凸模安装在所述凸模斜楔机构上，随着所述凸模斜楔机构的运动，所述修边凸模完成对所述C型口的修边。
  16. 如权利要求11所述的用于前下控制臂C型口的修边方法，其特征在于，所述步骤S 5具体包括：
    S 51、压机向上运动，所述凸模驱动块的驱动面与所述凸模斜楔机构的驱动面分离，所述凸模斜楔机构在自身力源的作用下回退至初始安装位置；
    S 52、所述凹模驱动块的驱动面与所述凹模斜楔机构的驱动面分离，所述凹模斜楔机构在自身力源的作用下回退至初始安装位置；
    S 53、所述上模的压料板与所述前下控制臂的表面分离，从所述修冲模具中取出所述前下控制臂。
  17. 如权利要求11所述的用于前下控制臂C型口的修边方法，其特征在于，所述步骤S 1中所述凹模斜楔机构和所述凸模斜楔机构之间的距离在进行修边之前大于70mm。
  18. 如权利要求11所述的用于前下控制臂C型口的修边方法，其特征在于，所述步骤S 4中所述凹模斜楔机构和所述凸模斜楔机构之间的距离在进行修改时大于等于20mm。
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