Aluminum alloy auxiliary frame bushing press-fitting device based on workpiece floating

Abstract

The utility model discloses an aluminum alloy auxiliary frame bushing press-fitting device based on workpiece floating, which relates to the field of auxiliary frame assembly and comprises a working table, a table plate is arranged at the top of the working table, a floating plate is arranged above the table plate, a plurality of auxiliary frame positioning pins are arranged on the floating plate and used for positioning and mounting an auxiliary frame, and a central hole is formed in the center of the floating plate; the floating assembly is installed between the floating plate and the table plate and used for supporting the floating plate in a floating mode; the positioning component is arranged on the bedplate below the central hole and is used for positioning and mounting the product bushing, so that the product bushing is exposed from the central hole; and the servo press is supported on the bedplate through a stand column, so that a pressing head of the servo press is positioned right above the lining of the product, and the servo press is electrically connected and controlled by a control screen arranged on the stand column. According to the utility model, floating buffering is realized by utilizing the floating plate in the press fitting process of the bushing, so that the bushing can be perfectly pressed into the auxiliary frame, and the problem of trimming damage of the bushing in the press fitting process of the aluminum alloy auxiliary frame is thoroughly solved.

Description

Technical Field

[0001] The utility model relates to the field of auxiliary frame assembly, in particular to an aluminum alloy auxiliary frame bushing press-fitting device based on workpiece floating. Background Art

[0002] Aluminum alloy subframes are widely used in new energy vehicles. The required dimensional accuracy of bushings directly impacts vehicle quality, such as comfort and noise. Bushing press-fitting, as the final step, directly determines product quality.

[0003] At present, domestic manufacturers rely on hard extrusion to press in such bushings. Generally, the workpiece is positioned, the bushing is placed on the workpiece, and the workpiece is positioned by its own chamfer. The bushing angle is generally also manually visually determined.

[0004] However, the existing technical solutions have the following defects:

[0005] 1. There is no buffer mechanism during the hard squeezing process of the bushing, which can easily cause cutting edges. Even if the bushing is successfully pressed in, the squeezing force is too large, which affects the service life of the bushing.

[0006] 2. The bushing has no positioning and is placed manually, which can easily lead to crooked placement and affect the press-fitting quality.

[0007] 3. The bushing has no angle error prevention function, which may easily cause mis-pressing. Utility Model Content

[0008] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide an aluminum alloy subframe bushing press-fitting device based on workpiece floating. The workpiece floating press-fitting principle is adopted to achieve perfect pressing of the bushing. The device adopts a servo electric cylinder to monitor the force and displacement during the pressing process and draw a curve. If an abnormal curve is found, an automatic alarm is given to completely prevent the pressing of unqualified parts. The bushing positioning setting angle error prevention and bushing detection at the bottom of the device can prevent wrong pressing and leakage.

[0009] The purpose of the utility model is achieved through the following technical solutions: This aluminum alloy subframe bushing press-fitting device based on workpiece floating includes:

[0010] A workbench is provided with a table plate on the top, a floating plate is provided above the table plate, a plurality of sub-frame locating pins are provided on the floating plate for positioning and installing the sub-frame, and a center hole is provided in the center of the floating plate;

[0011] A floating assembly is installed between the floating plate and the table plate and is used to float and support the floating plate;

[0012] a positioning assembly, disposed on the platform below the center hole, for positioning and installing the product bushing so that the product bushing is exposed from the center hole; and

[0013] The servo press is supported on the table by a column so that the pressure head of the servo press is located directly above the product bushing. The servo press is electrically connected and controlled by a control panel arranged on the column.

[0014] As a further technical solution, the floating assembly includes several floating guide rods fixed to the bottom of the floating plate, holes are opened on the table at positions corresponding to the floating guide rods and guide sleeves are installed, floating springs are sleeved on the outer periphery of the floating guide rods and then inserted into the corresponding guide sleeves, and the floating springs are pressed between the guide sleeves and the floating plate.

[0015] As a further technical solution, a gap is left between the outer wall of the floating guide rod and the inner wall of the guide sleeve, so that the floating plate can float up and down while also floating laterally within the range of the gap.

[0016] As a further technical solution, the positioning assembly includes a bushing positioning column for positioning and installing the product bushing. The bushing positioning column is installed on the fixed plate through a positioning base, and the fixed plate is installed on the table.

[0017] As a further technical solution, two bushing positioning pins are provided on the top of the bushing positioning column, which are used to snap into the positioning grooves provided on the bottom of the product bushing to prevent errors in the installation angle of the product bushing.

[0018] As a further technical solution, the control screen is used to record and display the pressure and displacement values ​​of the pressure head in real time, and to send out an alarm signal when the values ​​are abnormal.

[0019] The beneficial effects of the utility model are:

[0020] 1. During the bushing press-fitting process, a floating plate (floating component) is used to achieve floating buffering, allowing the bushing to be perfectly pressed into the subframe, completely solving the problem of bushing edge damage during the press-fitting process of the aluminum alloy subframe;

[0021] 2. The control screen can monitor the force and displacement data of the bushing in real time during the pressing process, completely eliminating the pressing of unqualified products;

[0022] 3. The bushing angular positioning is achieved through the bushing positioning pin on the bushing positioning column, and it has the function of detecting pressure leakage and mis-pressure;

[0023] 4. Compared with manual pressing and visual positioning, it has higher production efficiency and is more convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of the present utility model.

[0025] Figure 2 This is a schematic diagram of the structure of the utility model during press assembly.

[0026] Figure 3 for Figure 2 A partial enlarged schematic diagram of area A in the middle.

[0027] Figure 4 This is a schematic diagram of the three-dimensional structure of the bushing and bushing positioning column of the product of the utility model after assembly.

[0028] Figure 5 It is a structural diagram of the positioning component in the utility model.

[0029] Figure 6 This is a schematic structural diagram of the bushing in the utility model.

[0030] Figure 7 This is a schematic diagram of the main structure of the bushing and bushing positioning column of the product after assembly in the utility model.

[0031] Figure 8 for Figure 7 BB cross-sectional view.

[0032] Explanation of the accompanying drawings: workbench 1, tabletop 2, floating plate 3, column 4, control panel 5, servo press 6, pressing head 7, subframe locating pin 8, floating guide rod 9, floating spring 10, product bushing 11, bushing locating column 12, guide sleeve 13, subframe 14, center hole 15, positioning base 16, bushing locating pin 17, gap 18, positioning groove 19, fixing plate 20. DETAILED DESCRIPTION

[0033] The following is a detailed introduction to the present invention with reference to the accompanying drawings:

[0034] Example: As shown in the attached Figures 1 to 8 As shown, this aluminum alloy subframe bushing pressing device based on workpiece floating includes a workbench 1, a table 2, a floating plate 3, a column 4, a control panel 5, a servo press 6, a pressing head 7, a subframe locating pin 8, a floating guide rod 9, a floating spring 10, a product bushing 11, a bushing locating column 12, a guide sleeve 13, a subframe 14, a center hole 15, a positioning base 16, a bushing locating pin 17, a gap 18, a positioning groove 19 and a fixing plate 20.

[0035] Reference Attachment Figure 1 、 2 A tabletop 2 is provided on top of the workbench 1, and a floating plate 3 is provided above the tabletop 2. Four sub-frame locating pins 8 are fixedly mounted on the floating plate 3, and the sub-frame 14 is mounted on the floating plate 3 via the sub-frame locating pins 8. Furthermore, a center hole 15 is provided in the center of the floating plate 3.

[0036] like Figure 2 、 3As shown, a floating assembly (providing floating support for the floating plate 3) is installed between the floating plate 3 and the tabletop 2. The floating assembly comprises four floating guide rods 9 fixed to the bottom of the floating plate 3. A hole is opened on the tabletop 2 at a position corresponding to each floating guide rod 9 and a guide sleeve 13 is installed. A floating spring 10 is sleeved around the outer periphery of the floating guide rod 9 and inserted into the corresponding guide sleeve 13, so that the floating spring 10 is positioned between the surface of the guide sleeve 13 and the lower end surface of the floating plate 3. Preferably, a gap 18 is provided between the outer wall of the floating guide rod 9 and the inner wall of the guide sleeve 13, allowing the floating plate 3 to float up and down while also allowing a certain degree of lateral movement within the range of the gap 18.

[0037] Reference Attachment Figure 4 、 5 A positioning assembly is provided on the table 2 below the center hole 15. The positioning assembly can position and install the product bushing 11 and make the product bushing 11 exposed from the center hole 15. Further, the positioning assembly includes a bushing positioning column 12, a positioning base 16 and a fixing plate 20. The bushing positioning column 12 is installed on the fixing plate 20 through the positioning base 16, and the fixing plate 20 is installed on the table 2 through a threaded connection. Two bushing positioning pins 17 are provided on the top of the bushing positioning column 12, such as Figure 6 、 7 As shown in Figures 8 and 8, when the product bushing 11 is assembled with the bushing positioning column 12, the bushing positioning pin 17 can be inserted into the two positioning grooves 19 provided at the bottom of the product bushing 11, thereby preventing the product bushing 11 from being installed at an incorrect angle.

[0038] like Figure 1 、 2 As shown, the servo press 6 is supported above the table 2 by the column 4. After the bushing positioning column 12 is fixed to the table 2 by the fixing plate 20, it is necessary to ensure that the pressure head 7 of the servo press 6 is exactly located above the product bushing 11 (bushing positioning column 12). The servo press 6 is electrically connected and controlled by the control panel 5 set on the column 4. During the pressing process, the control panel 5 can record and display the pressure and displacement values ​​of the pressure head 7 in real time, and draw curves. If an abnormal curve is found, an alarm will be automatically triggered to completely prevent unqualified parts from being pressed in.

[0039] The working process of this utility model:

[0040] 1. Place the product bushing 11 into the bushing positioning column 12 and use the bushing positioning pin 17 to position it to achieve the bushing angle error prevention and missing detection function;

[0041] 2. Place the aluminum alloy subframe 14 onto the subframe locating pins 8. The entire subframe 14 is supported by the floating springs 10 (floating plates 3);

[0042] 3. Press the start button and the servo press 6 starts to press down;

[0043] 4. When the pressing head 7 contacts the aluminum alloy subframe 14, the floating spring 10 is compressed, and the entire floating plate 3 begins to move downward and gradually contacts the product bushing 11 below. At this time, the floating plate 3 can also float laterally through the gap 18 between the floating guide rod 9 and the guide sleeve 13, so that the product bushing 11 can be better guided into the subframe 14 to prevent edge cutting;

[0044] 5. The subframe 14 continues to be pressed down until the bushing 11 of the product is completely inserted into the subframe 14. The system records the pressing force and displacement in real time and displays the drawn curve on the control screen 5. If an abnormal curve is found, an automatic alarm will be issued to completely prevent unqualified parts from being pressed in.

[0045] 6. Then the pressing head 7 of the servo press 6 rises, and the aluminum alloy subframe 14 automatically rises back through the floating spring 10, and the press assembly is completed.

[0046] It is understandable that for those skilled in the art, any equivalent replacement or change of the technical solution and the concept of the utility model should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A press-fitting device for aluminum alloy subframe bushings based on workpiece floating, characterized in that: include: A workbench (1) is provided with a table plate (2) on the top thereof, a floating plate (3) is provided above the table plate (2), a plurality of sub-frame positioning pins (8) are provided on the floating plate (3) for positioning and installing the sub-frame (14), and a center hole (15) is provided at the center of the floating plate (3); A floating assembly is installed between the floating plate (3) and the table (2) and is used for floatingly supporting the floating plate (3); A positioning assembly is provided on the platform (2) below the center hole (15) and is used for positioning and installing the product bushing (11) so that the product bushing (11) is exposed from the center hole (15); and The servo press (6) is supported on the table (2) through the column (4) so ​​that the pressure head (7) of the servo press (6) is located directly above the product bushing (11). The servo press (6) is electrically connected and controlled by a control panel (5) arranged on the column (4).

2. The aluminum alloy subframe bushing press-fitting device based on workpiece floating according to claim 1 is characterized in that: The floating assembly includes a plurality of floating guide rods (9) fixed to the bottom of the floating plate (3), holes are opened on the table (2) at positions corresponding to the floating guide rods (9) and guide sleeves (13) are installed, and floating springs (10) are sleeved on the outer periphery of the floating guide rods (9) and then inserted into the corresponding guide sleeves (13), and the floating springs (10) are pressed between the guide sleeves (13) and the floating plate (3).

3. The aluminum alloy subframe bushing press-fitting device based on workpiece floating according to claim 2 is characterized in that: A gap (18) is left between the outer wall of the floating guide rod (9) and the inner wall of the guide sleeve (13), so that the floating plate (3) can float up and down while also floating laterally within the range of the gap (18).

4. The aluminum alloy subframe bushing press-fitting device based on workpiece floating according to claim 1 is characterized in that: The positioning assembly comprises a bushing positioning column (12) for positioning and installing a product bushing (11); the bushing positioning column (12) is mounted on a fixing plate (20) via a positioning base (16); and the fixing plate (20) is mounted on a table (2).

5. The aluminum alloy subframe bushing press-fitting device based on workpiece floating according to claim 4 is characterized in that: Two bushing positioning pins (17) are provided on the top of the bushing positioning column (12) for engaging in positioning grooves (19) provided at the bottom of the product bushing (11), thereby preventing the product bushing (11) from being installed at an incorrect angle.

6. The aluminum alloy subframe bushing press-fitting device based on workpiece floating according to claim 1 is characterized in that: The control screen (5) is used to record and display the pressure and displacement values ​​of the pressure head (7) in real time, and to send out an alarm signal when the values ​​are abnormal.

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