A whole type fine longitudinal beam frame type aluminum alloy chassis subframe straightening tool

Abstract

The application discloses a whole fine longitudinal beam frame type aluminum alloy chassis subframe correcting tool, which comprises a workbench (11), wherein a pair of end face clamping mechanisms (1), a corner clamping mechanism (2), a pair of horn correcting oil cylinders (3), a frame correcting oil cylinder (4) and a group of longitudinal beam correcting oil cylinders (5) are arranged on the workbench (11). The aluminum alloy chassis subframe blank sent to a machining sequence can meet machining requirements, the product qualified rate and the machining efficiency are greatly improved, and the cost is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of alignment tooling, specifically to an integral thin longitudinal beam frame type aluminum alloy chassis subframe alignment tooling. Background Technology

[0002] Currently, new energy is the main trend for the transformation and upgrading of the global automotive industry and its green development, and it is also a strategic choice for the leapfrog development of my country's automotive industry. Lightweight chassis is an inevitable choice for energy conservation and emission reduction. However, during the casting, placement, process flow, and subsequent heat treatment of integral aluminum alloy chassis castings, the subframe of the integral frame is extremely prone to deformation, and the deformation trend of each part is inconsistent, making detection and identification extremely difficult. After flowing to the machining process, deformed products exhibit thin hole walls, hole misalignment, and lack of shine during machining, affecting processing efficiency and wasting processing costs. Product deformation is the biggest technical challenge in the industry. Only by solving the deformation problem can the product qualification rate be significantly improved, the processing process be kept smooth, and costs saved.

[0003] Currently, there is no universally accepted and effective process for straightening aluminum alloy chassis subframes in the industry. Some methods involve pressing parts together and then striking them with a wooden hammer, while others use screw tightening mechanisms to press deformed parts or use hydraulic cylinders for correction.

[0004] Existing technologies do not take into account the frame structure of the parts and the springback caused by stress release. The selection of the calibration location does not take into account the bending point of deformation. After the calibration is qualified, the external load is removed and the product is compressed to release stress, which causes springback. Furthermore, the force of manual hammering is too small to cause plastic deformation in large chassis parts, and only elastic deformation will occur, which cannot be used for calibration. Utility Model Content

[0005] The purpose of this utility model is to address the above-mentioned shortcomings by providing an integral fine longitudinal beam frame type aluminum alloy chassis subframe shaping tooling.

[0006] This utility model includes a workbench, on which are provided a pair of end face clamping mechanisms, a corner clamping mechanism, a pair of horn-shaped hydraulic cylinders, a frame-shaped hydraulic cylinder, and a set of longitudinal beam-shaped hydraulic cylinders.

[0007] A set of longitudinal beam straightening cylinders are arranged in a ring in the middle of the workbench. The corner clamping mechanism and the frame straightening cylinder are located on one side of the longitudinal beam straightening cylinders. A pair of ram horn straightening cylinders are located on the other side of the longitudinal beam straightening cylinders. A pair of end face clamping mechanisms are located between the pair of ram horn straightening cylinders. C-shaped push-pull heads are respectively provided at the piston rod ends of the ram horn straightening cylinders, the frame straightening cylinders and the longitudinal beam straightening cylinders.

[0008] The end face clamping mechanism includes an L-shaped support and a first clamping block. A first pressure plate is provided on the top of the first clamping block. The first pressure plate is detachably installed on the top of the first clamping block by bolts. The first pressure plate is located above the L-shaped support.

[0009] The corner clamping mechanism includes a support block and a second pressing block. A second pressure plate is provided on the top of the second pressing block. The second pressure plate is detachably installed on the top of the second pressing block by bolts. The second pressure plate is located above the support block.

[0010] Both the first and second pressure plates are rectangular.

[0011] The ram horn-shaped hydraulic cylinder, the frame-shaped hydraulic cylinder, and the longitudinal beam-shaped hydraulic cylinder are vertically mounted on the workbench.

[0012] The top of the cylinder of the ram horn-shaped hydraulic cylinder, the frame-shaped hydraulic cylinder, and the longitudinal beam-shaped hydraulic cylinder is equipped with a mounting plate, which is mounted on the top surface of the workbench by a set of support columns.

[0013] The piston rod ends of the ram horn-shaped hydraulic cylinder, the frame-shaped hydraulic cylinder, and the longitudinal beam-shaped hydraulic cylinder are respectively provided with sliding grooves, and the bottom of the C-shaped push-pull head is provided with a slider that cooperates with the sliding grooves.

[0014] The workbench is rectangular, with support columns at each of the four corners of its bottom.

[0015] The number of hydraulic cylinders in a set of longitudinal beam straightening cylinders is four.

[0016] The advantages of this invention are: it ensures that the aluminum alloy chassis subframe blanks sent to the machining process can meet the processing requirements, greatly improves the product qualification rate and machining efficiency, and significantly reduces costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a structural schematic diagram of the aluminum alloy chassis subframe of this utility model.

[0019] Figure 3 This is a schematic diagram of the aluminum alloy chassis subframe structure of this utility model.

[0020] Figure 4 This is a side view schematic diagram of the aluminum alloy chassis subframe structure of this utility model. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of the embodiments of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, if terms such as "first" or "second" appear in the description of this invention, they are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0026] As shown in the attached drawing, this utility model includes a workbench 11, on which are provided a pair of end face clamping mechanisms 1, a corner clamping mechanism 2, a pair of horn-shaped hydraulic cylinders 3, a frame-shaped hydraulic cylinder 4, and a set of longitudinal beam-shaped hydraulic cylinders 5.

[0027] A set of longitudinal beam straightening cylinders 5 are arranged in a ring in the middle of the workbench 11. The corner clamping mechanism 2 and the frame straightening cylinder 4 are located on one side of the longitudinal beam straightening cylinder 5. A pair of ram horn straightening cylinders 3 are located on the other side of the longitudinal beam straightening cylinder 5. A pair of end face clamping mechanisms 1 are located between the pair of ram horn straightening cylinders 3. C-shaped push-pull heads are respectively provided at the piston rod ends of the ram horn straightening cylinder 3, the frame straightening cylinder 4 and the longitudinal beam straightening cylinder 5.

[0028] The end face clamping mechanism 1 includes an L-shaped support 6 and a first pressing block 7. A first pressure plate is provided on the top of the first pressing block 7. The first pressure plate is detachably installed on the top of the first pressing block 7 by bolts. The first pressure plate is located above the L-shaped support 6.

[0029] The corner clamping mechanism 2 includes a support block 8 and a second pressing block 9. A second pressure plate is provided on the top of the second pressing block 9. The second pressure plate is detachably installed on the top of the second pressing block 9 by bolts. The second pressure plate is located above the support block 8.

[0030] Both the first and second pressure plates are rectangular.

[0031] The horn-shaped hydraulic cylinder 3, the frame-shaped hydraulic cylinder 4, and the longitudinal beam-shaped hydraulic cylinder 5 are vertically installed on the workbench 11.

[0032] The top of the cylinder barrels of the ram horn-shaped hydraulic cylinder 3, the frame-shaped hydraulic cylinder 4, and the longitudinal beam-shaped hydraulic cylinder 5 are equipped with mounting plates, which are mounted on the top surface of the workbench 11 by a set of support columns.

[0033] The piston rod ends of the ram's horn-shaped hydraulic cylinder 3, the frame-shaped hydraulic cylinder 4, and the longitudinal beam-shaped hydraulic cylinder 5 are respectively provided with sliding grooves, and the bottom of the C-shaped push-pull head is provided with a slider that cooperates with the sliding grooves. The sliding grooves and sliders are detachably connected, and the C-shaped push-pull head is installed into the top of the hydraulic cylinder after the workpiece is clamped and positioned.

[0034] The workbench 11 is a rectangular workbench, and support columns are set at the four corners of the bottom of the workbench 11.

[0035] The number of hydraulic cylinders 5 in a set of longitudinal beam straightening cylinders is four.

[0036] Example 1: The integral thin longitudinal beam frame type aluminum alloy chassis subframe 100 (hereinafter referred to as workpiece) is a double-layer frame structure. The frame will deform and undergo certain torsional deformation. Through structural analysis, the deformation part is found.

[0037] Place the relatively straight end of the workpiece on a pair of L-shaped supports 6, and place the larger flat end of the workpiece on the support block 8. Tighten the bolts on the first and second pressure plates to press and position the workpiece from above. Secure the C-shaped push-pull head of the frame-aligning cylinder 4 to the workpiece from the side, and achieve overall frame alignment of the workpiece by pushing and pulling the frame-aligning cylinder 4.

[0038] The crossbeam in the middle of the workpiece is relatively thin and is prone to bending deformation. The longitudinal beams on the left and right sides are slightly thinner than the overall length of the frame, making them susceptible to bending deformation in the middle. The planar structure between the corner clamping mechanism 2 and the frame straightening cylinder 4 is weaker than the sides and may also deform. The above deformation areas are straightened by pushing and pulling a set of longitudinal beam straightening cylinders 5.

[0039] The workpiece's horns extend too far, making it prone to bending deformation. Based on the longitudinal beam straightening cylinder 5, the horns are straightened by pushing and pulling a pair of horn straightening cylinders 3.

Claims

1. A fixture for straightening an integral thin longitudinal beam frame type aluminum alloy chassis subframe, comprising a workbench (11), characterized in that... The workbench (11) is equipped with a pair of end face clamping mechanisms (1), a corner clamping mechanism (2), a pair of horn-shaped hydraulic cylinders (3), a frame-shaped hydraulic cylinder (4), and a set of longitudinal beam-shaped hydraulic cylinders (5). A set of longitudinal beam straightening cylinders (5) are arranged in a ring in the middle of the workbench (11). The corner clamping mechanism (2) and the frame straightening cylinder (4) are located on one side of the longitudinal beam straightening cylinder (5). A pair of ram horn straightening cylinders (3) are located on the other side of the longitudinal beam straightening cylinder (5). A pair of end face clamping mechanisms (1) are located between the pair of ram horn straightening cylinders (3). C-shaped push-pull heads are respectively provided at the piston rod ends of the ram horn straightening cylinder (3), the frame straightening cylinder (4) and the longitudinal beam straightening cylinder (5).

2. The integral fine longitudinal beam frame type aluminum alloy chassis subframe shaping fixture according to claim 1, characterized in that, The end face clamping mechanism (1) includes an L-shaped support (6) and a first clamping block (7). The first clamping block (7) has a first pressure plate on its top. The first pressure plate is detachably installed on the top of the first clamping block (7) by bolts. The first pressure plate is located above the L-shaped support (6).

3. The integral fine longitudinal beam frame type aluminum alloy chassis subframe shaping fixture according to claim 2, characterized in that, The corner clamping mechanism (2) includes a support block (8) and a second pressing block (9). A second pressure plate is provided on the top of the second pressing block (9). The second pressure plate is detachably installed on the top of the second pressing block (9) by bolts. The second pressure plate is located above the support block (8).

4. The integral fine longitudinal beam frame type aluminum alloy chassis subframe shaping fixture according to claim 3, characterized in that, Both the first and second pressure plates are rectangular.

5. The integral fine longitudinal beam frame type aluminum alloy chassis subframe shaping fixture according to claim 1, characterized in that, The horn-shaped hydraulic cylinder (3), the frame-shaped hydraulic cylinder (4), and the longitudinal beam-shaped hydraulic cylinder (5) are vertically installed on the workbench (11).

6. The integral fine longitudinal beam frame type aluminum alloy chassis subframe shaping fixture according to claim 5, characterized in that, The top of the cylinder of the ram horn-shaped cylinder (3), the frame-shaped cylinder (4) and the longitudinal beam-shaped cylinder (5) is provided with a mounting plate, which is mounted on the top surface of the workbench (11) by a set of support columns.

7. The integral fine longitudinal beam frame type aluminum alloy chassis subframe shaping fixture according to claim 1, characterized in that, The piston rod ends of the ram horn-shaped hydraulic cylinder (3), the frame-shaped hydraulic cylinder (4), and the longitudinal beam-shaped hydraulic cylinder (5) are respectively provided with sliding grooves, and the bottom of the C-shaped push-pull head is provided with a slider that works in conjunction with the sliding grooves.

8. The integral fine longitudinal beam frame type aluminum alloy chassis subframe shaping fixture according to claim 1, characterized in that, The workbench (11) is a rectangular workbench, and support columns are set at the four corners of the bottom of the workbench (11).

9. The integral fine longitudinal beam frame type aluminum alloy chassis subframe shaping fixture according to claim 1, characterized in that, The number of a set of longitudinal beam straightening cylinders (5) is four.

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