Automatic trimming tool for lightweight auxiliary frame of automobile chassis

Abstract

The utility model discloses an automatic trimming tool for a lightweight auxiliary frame of an automobile chassis, which relates to the technical field of automobile dies, and is characterized in that the automatic trimming tool comprises an upper die and a lower die matched with the upper die, the lower die is provided with a plurality of supporting seats, the positions of the supporting seats correspond to those of the auxiliary frame, and the supporting seats are arranged on the lower die. The upper die is provided with a plurality of punching blades, the plurality of punching blades are arranged along an inner frame and an outer frame of the auxiliary frame, the upper die is provided with four positioning columns used for being inserted into auxiliary frame body mounting holes, and the upper die is connected with a material pushing limiting mechanism used for abutting against a longitudinal beam of the auxiliary frame in a sliding mode. According to the utility model, the die structure is improved, the functions of automatic positioning and automatic waste discharging are realized, and the auxiliary frame is pressed in the punching process, so that the punching precision is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile molds, and more specifically, it relates to an automatic trimming tooling for a lightweight subframe of an automobile chassis. Background Art

[0002] The subframe is the skeleton of the front and rear axles and an important part of the automobile chassis. Its main functions are to weaken the impact of road vibrations on the vehicle body, improve the connection stiffness of the suspension system, enhance the comfort and stability of the vehicle during driving. In addition, the subframe can also reduce the noise caused by the engine and road vibrations and improve the sound insulation level inside the vehicle cabin.

[0003] In the prior art, after the production of the subframe assembly is completed, there will be waste materials at the flanging edge of its outer edge, and a trimming die is required to cut off the waste materials. However, during the trimming process of the existing trimming die for the subframe assembly, it is not convenient to press and fix the subframe assembly, and manual assistance is mostly required, resulting in a low degree of automation. As a result, the subframe assembly is prone to positional deviation during the trimming process, causing dimensional deviation, affecting the trimming accuracy, and having low processing efficiency, with certain safety risks.

[0004] Therefore, an automatic trimming tooling for a lightweight subframe of an automobile chassis is needed to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an automatic trimming tooling for a lightweight subframe of an automobile chassis to solve the problems raised in the above background art.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions:

[0007] An automatic trimming tooling for a lightweight subframe of an automobile chassis includes an upper die and a lower die that cooperates with the upper die. A plurality of support seats are provided on the lower die, and the positions of the plurality of support seats correspond to the subframe. A plurality of punching edges are provided on the upper die, and the plurality of punching edges are arranged along the inner and outer borders of the subframe. Four positioning columns for inserting into the body mounting holes of the subframe are provided on the upper die, and a material pushing and limiting mechanism for abutting against the longitudinal beam of the subframe is slidably connected to the upper die.

[0008] The technical solution of the utility model is further set as: a plurality of the support seats are in a "day" shape, and the four corners form a positioning area, and the positioning area corresponds to the position of the positioning column and is provided with avoidance notches.

[0009] The technical solution of the utility model is further set as follows: The pushing and limiting mechanism includes a moving plate and a pressing plate. The moving plate is slidably connected to the upper die. There are two pressing plates which are fixedly connected to the bottom surface of the moving plate. After the two pressing plates penetrate through the upper die, they respectively abut against the two longitudinal beams of the subframe.

[0010] The technical solution of the utility model is further set as follows: Two first limiting columns are fixedly connected to the lower die. The pushing and limiting mechanism further includes two second limiting columns corresponding to the positions of the two first limiting columns. The two second limiting columns are fixedly connected to the bottom surface of the moving plate. The second limiting column abuts against the first limiting column and the diameter of the second limiting column is smaller than that of the first limiting column.

[0011] The technical solution of the utility model is further set as follows: The upper die includes a top plate and a connecting plate. A plurality of connecting columns distributed in an array are fixedly connected between the top plate and the connecting plate. The moving plate is slidably connected to the plurality of connecting columns. Both the pressing plate and the second limiting column penetrate through the connecting plate.

[0012] The technical solution of the utility model is further set as follows: Guide columns are fixedly connected to the four corners at the upper end of the lower die, and guide sleeves matched with the guide columns are fixedly connected to the four corners at the lower end of the upper die.

[0013] The technical solution of the utility model is further set as follows: A circle of baffles is fixedly connected to the upper end of the lower die, and the circle of baffles is located inside the four guide columns.

[0014] The technical solution of the utility model is further set as follows: The lower die includes a fixed plate and a bottom plate which are fixedly connected to each other. A plurality of blanking holes are formed in both the fixed plate and the bottom plate, and the positions of the plurality of blanking holes correspond to the positions of the waste materials on the subframe.

[0015] Due to the adoption of the above technical solution, the technical progress achieved by the utility model compared with the prior art is:

[0016] The quick positioning of the subframe is realized through a plurality of supporting seats and four avoiding notches on the lower die, and the positions of the punching blades are made to coincide with the inner and outer frames of the subframe by cooperating with the four positioning columns on the upper die, so that a plurality of punching blades can cut off the waste materials on the subframe. And before punching, the pushing and limiting mechanism on the upper die can press the subframe to prevent its position from shifting during the punching process and ensure the punching accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a structural schematic diagram of the utility model;

[0018] Figure 2Schematic structural diagram of the upper die in the present utility model;

[0019] Figure 3 Schematic structural diagram of the lower die in the present utility model;

[0020] Figure 4 Schematic structural diagram of the material pushing and limiting mechanism in the present utility model;

[0021] Figure 5 Schematic structural diagram of the subframe in the present utility model.

[0022] In the figure: 1. Upper die; 2. Lower die; 3. Support seat; 4. Punching edge; 5. Positioning column; 6. Avoidance notch; 7. Moving plate; 8. Tightening plate; 9. First limit column; 10. Second limit column; 11. Top plate; 12. Connecting plate; 13. Connecting column; 14. Guide post; 15. Guide sleeve; 16. Baffle; 17. Fixed plate; 18. Bottom plate; 19. Blanking hole. Detailed implementation manners

[0023] In order to better understand the technical means of the present utility model and implement it according to the content of the specification, the following further describes the detailed implementation manners of the present utility model in combination with the drawings and embodiments. The following embodiments are used to illustrate the present utility model but not to limit the scope of the present utility model. Embodiment

[0024] As Figures 1 to 5 shown, the present utility model provides an automatic trimming tooling for a lightweight subframe of an automobile chassis, including an upper die 1 and a lower die 2 cooperating with the upper die 1. A plurality of support seats 3 are provided on the lower die 2, and the positions of the plurality of support seats 3 correspond to the subframe. A plurality of punching edges 4 are provided on the upper die 1, and the plurality of punching edges 4 are arranged along the inner and outer frames of the subframe. A material pushing and limiting mechanism for abutting against the longitudinal beam of the subframe is slidably connected to the upper die 1.

[0025] As Figures 1 to 5 shown, the upper die 1 includes a top plate 11 and a connecting plate 12. A plurality of connecting columns 13 distributed in an array are fixedly connected between the top plate 11 and the connecting plate 12. Four positioning columns 5 for inserting into the body mounting holes of the subframe are provided on the bottom surface of the connecting plate 12. The plurality of support seats 3 on the lower die 2 are distributed in a "day" shape, and the four corners form a positioning area, and the positioning area corresponds to the positions of the positioning columns 5 and is provided with avoidance notches 6.

[0026] With the above - mentioned structure, when the sub - frame is placed on the lower die 2, several support seats 3 on the lower die 2 can fit with the bottom surface of the sub - frame, thus playing a supporting role. Moreover, the avoidance notches 6 at the four positioning areas can correspond to the positions of the body mounting holes on the sub - frame. Then, during the process of the upper die 1 sliding towards the lower die 2 for punching, the four positioning posts 5 on the connecting plate 12 will first insert into the body mounting holes on the sub - frame and then gradually enter the avoidance notches 6. While ensuring the precise positioning of the sub - frame, the punching blades 4 on the connecting plate 12 perform punching along the inner and outer borders of the sub - frame, ensuring the quality of the finished product.

[0027] As Figures 1 to 5 shown, the material - pushing and limiting mechanism includes a moving plate 7 and a pressing plate 8. The moving plate 7 is slidably connected to several connecting columns 13. There are two pressing plates 8 which are fixedly connected to the bottom surface of the moving plate 7. The two pressing plates 8 penetrate through the connecting plate 12 and respectively abut against the two longitudinal beams of the sub - frame. Two limiting columns I 9 are fixedly connected to the lower die 2. The material - pushing and limiting mechanism further includes two limiting columns II 10 corresponding to the positions of the two limiting columns I 9. The two limiting columns II 10 are fixedly connected to the bottom surface of the moving plate 7 and penetrate through the connecting plate 12. The limiting column II 10 abuts against the limiting column I 9 and the diameter of the limiting column II 10 is smaller than that of the limiting column I 9.

[0028] With the above - mentioned structure, before the upper die 1 slides downwards towards the lower die 2, the material - pushing and limiting mechanism will slide downwards prior to the upper die 1. Thus, the moving plate 7 slides down along the connecting columns 13, driving the two pressing plates 8 and the two limiting columns II 10 to slide until the pressing plates 8 abut against the two longitudinal beams of the sub - frame, and the limiting column II 10 abuts against the limiting column I 9 on the lower die 2, hindering the moving plate 7 from continuing to slide and preventing it from squeezing the sub - frame. In this way, before punching, not only the position of the sub - frame is positioned, but also it is restricted in the height direction, which can effectively prevent its position from shifting during the punching process and ensure the punching accuracy.

[0029] As Figures 1 to 5 shown, the lower die 2 includes a fixed plate 17 and a bottom plate 18 which are fixedly connected to each other. Guide columns 14 are fixedly connected to the four corners of the top surface of the fixed plate 17. Guide sleeves 15 which cooperate with the guide columns 14 are fixedly connected to the four corners of the bottom surface of the connecting plate 12. A ring of baffles 16 is fixedly connected to the top surface of the fixed plate 17. The ring of baffles 16 is located inside the four guide columns 14. A plurality of blanking holes 19 are formed in both the fixed plate 17 and the bottom plate 18, and the positions of the plurality of blanking holes 19 correspond to the positions of the waste materials on the sub - frame.

[0030] With the above structure set, when the upper die 1 slides downward for punching, it will slide downward along the guide pillar 14 on the fixed plate 17 through the guide sleeve 15, ensuring that the sliding trajectory of the upper die 1 does not deviate. Moreover, a ring of baffles 16 on the fixed plate 17 can also prevent waste materials on the subframe from splashing, ensuring the safety of the punching operation. The blanking holes 19 on the fixed plate 17 and the bottom plate 18 can automatically discharge the waste materials punched from the subframe, facilitating subsequent cleaning.

[0031] As Figures 1 to 5 shown, by connecting the upper die 1 and the material pushing and limiting mechanism to control devices such as oil cylinders or air cylinders respectively, before the punching work is carried out, both the upper die 1 and the material pushing and limiting mechanism slide upward away from the lower die 2. After completing the process of loading the subframe onto the lower die 2, the control device first controls the material pushing and limiting mechanism to slide downward to press the subframe, and then allows the upper die 1 to slide downward to complete the punching work on the subframe. Moreover, the punched waste materials fall out from the blanking holes 19 on the lower die 2. During this process, the degree of automation is relatively high, the safety is relatively high, and the precision of the trimming can be guaranteed.

[0032] The above is only the preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, several improvements and refinements made without departing from the principle of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. An automated tool for trimming lightweight subframes of automobile chassis, comprising an upper die (1) and a lower die (2) matched with the upper die (1), characterized in that: The lower die (2) is provided with a plurality of supporting seats (3), and the positions of the plurality of supporting seats (3) correspond to the subframe. The upper die (1) is provided with a plurality of punching edges (4), and the plurality of punching edges (4) are arranged along the inner and outer frames of the subframe. The upper die (1) is provided with four positioning columns (5) for inserting into the body mounting holes of the subframe. A material pushing and limiting mechanism for abutting against the longitudinal beams of the subframe is slidably connected to the upper die (1).

2. The automatic trimming tool for lightweight subframe of automobile chassis according to claim 1, characterized in that: The plurality of supporting seats (3) are in a shape of "日" and the four corners form a positioning area, and the positioning area corresponds to the position of the positioning column (5) and is provided with avoidance notches (6).

3. The automatic trimming tool for lightweight subframe of automobile chassis according to claim 1 is characterized by: The material pushing and limiting mechanism includes a moving plate (7) and a pressing plate (8). The moving plate (7) is slidably connected to the upper die (1). There are two pressing plates (8) which are fixedly connected to the bottom surface of the moving plate (7). After passing through the upper die (1), the two pressing plates (8) respectively abut against the two longitudinal beams of the subframe.

4. The automatic trimming tool for lightweight subframe of automobile chassis according to claim 3 is characterized by: Two limiting columns I (9) are fixedly connected to the upper end of the lower die (2). The material pushing and limiting mechanism further includes two limiting columns II (10) corresponding to the positions of the two limiting columns I (9). The two limiting columns II (10) are fixedly connected to the bottom surface of the moving plate (7). The limiting column II (10) abuts against the limiting column I (9) and the diameter of the limiting column II (10) is smaller than that of the limiting column I (9).

5. The automatic trimming tool for lightweight subframe of automobile chassis according to claim 4 is characterized by: The upper die (1) includes a top plate (11) and a connecting plate (12). A plurality of connecting columns (13) distributed in an array are fixedly connected between the top plate (11) and the connecting plate (12). The moving plate (7) is slidably connected to the plurality of connecting columns (13). The pressing plate (8) and the limiting column II (10) both pass through the connecting plate (12).

6. The automatic trimming tool for lightweight subframe of automobile chassis according to claim 1, characterized in that: Guide columns (14) are fixedly connected to the four corners at the upper end of the lower die (2). Guide sleeves (15) cooperating with the guide columns (14) are fixedly connected to the four corners at the lower end of the upper die (1).

7. The automatic trimming tool for lightweight subframe of automobile chassis according to claim 6 is characterized by: A ring of baffles (16) is fixedly connected to the upper end of the lower die (2). The ring of baffles (16) is located inside the four guide columns (14).

8. The automatic trimming tool for lightweight subframe of automobile chassis according to claim 1 is characterized by: The lower die (2) includes a fixed plate (17) and a bottom plate (18) fixedly connected to each other. A plurality of blanking holes (19) are formed in both the fixed plate (17) and the bottom plate (18), and the positions of the plurality of blanking holes (19) correspond to the positions of the waste materials on the subframe.

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