A kind of integral aluminum alloy front subframe semi-automatic straightening tool

Abstract

The utility model relates to a kind of integral aluminum alloy front subframe semi-automatic shape correction tool, including clamping concrete (1), end pressing plate (2), a pair of horn shape correction mechanism, a pair of ear piece shape correction oil cylinder (3) and a group of frame shape correction oil cylinder (4), clamping concrete (1) top is provided with a group of limit block (5), end pressing plate (2) is installed on clamping concrete (1) by support block, and end support column is provided below the pressing end of end pressing plate (2);Advantages are: using semi-automatic shape correction, substantially improve product pass rate.Product blank deformation is ensured within the scope of control, does not affect machining, further controls shape correction springback, can be adapted to a variety of aluminum alloy subframe.

Description

Technical Field

[0001] This utility model relates to the field of alignment tooling, specifically to a semi-automatic alignment tooling for an integral aluminum alloy front subframe. Background Technology

[0002] Currently, after machining, integral aluminum alloy front subframes often suffer from problems such as misaligned holes, milling marks, and lack of a smooth finish, or the product may be impossible to clamp and position. Besides improper machining and clamping design, product deformation is a major contributing factor. Deformation of aluminum alloy subframes is difficult to completely prevent, and the approach relies on a combination of pre-deformation prevention and post-deformation control. At present, there is no universally accepted and effective process for straightening aluminum alloy chassis subframes. Some methods involve pressing the parts with a wooden hammer, others use screw tightening mechanisms to press deformed areas, and still others use hydraulic cylinders for correction. Existing technologies do not consider the frame structure of the parts and the springback caused by stress release. The selection of straightening locations does not fully consider the bending points of deformation. After straightening, removing the external load and releasing the pressure causes springback; while manual hammering is too weak to cause plastic deformation in large chassis parts, only elastic deformation occurs, and the product is still deformed. Utility Model Content

[0003] The purpose of this utility model is to address the above-mentioned shortcomings by providing a semi-automatic alignment fixture for an integral aluminum alloy front subframe.

[0004] This utility model includes a clamping body, end pressure plates, a pair of ram's horn straightening mechanisms, a pair of ear-plate straightening cylinders, and a set of frame straightening cylinders. A set of limiting blocks is provided at the top of the clamping body, and the end pressure plate is installed on the clamping body through the support block. An end support column is provided below the clamping end of the end pressure plate. The horn-aligning mechanism includes a horn-level alignment cylinder, a pair of detection pins, and a side support column. The horn-level alignment cylinder is mounted on the fixture via a cylinder bracket. A alignment hook is provided at the end of the piston rod of the horn-level alignment cylinder. The detection pins are mounted on the fixture via a pin bracket. The side support column is mounted on the fixture, with the detection head of the detection pin facing the side support column. An upper pressure plate is located above the side support column and is mounted on the fixture via a support block. The lug-shaped hydraulic cylinder is vertically mounted on the clamping body. A shaping hook is provided at the end of the piston rod of the lug-shaped hydraulic cylinder. The lug-shaped hydraulic cylinder is located between a pair of ram's horn shaping mechanisms. The frame straightening cylinder is vertically mounted on the fixture body. The piston rod end of the frame straightening cylinder is equipped with a straightening hook, and the frame straightening cylinder is located in the middle of the fixture body.

[0005] The side wall of the limiting block is provided with a workpiece limiting groove.

[0006] The set of frame straightening cylinders consists of four cylinders, one of which is located between a pair of lug straightening cylinders, while the other three are arranged in a triangle and installed in the middle of the clamping body.

[0007] The ejector pin holder has a needle hole, and the test ejector pin is inserted horizontally into the needle hole.

[0008] A pair of ear-plate spacing detection plates are provided between a pair of ear-plate alignment cylinders. The ear-plate spacing detection plates are mounted on the fixture body via a detection bracket.

[0009] The top of the testing bracket has a mounting groove with a through pin hole. One end of the ear-plate spacing testing piece is located in the mounting groove and is movably mounted in the through pin hole via a pin shaft.

[0010] The ear-plate spacing test piece is an L-shaped test piece.

[0011] The clamp is vertically equipped with a ram's horn vertical alignment cylinder, and the piston rod end of the ram's horn vertical alignment cylinder is equipped with an alignment hook.

[0012] The piston rod ends of the ear-shaped oil cylinder, the frame-shaped oil cylinder, and the ram's horn horizontal-shaped oil cylinder are respectively provided with sliding grooves, and the bottom of the shaping hook is provided with a slider that matches the sliding groove.

[0013] The advantages of this invention are: it adopts semi-automatic shaping, which significantly improves the product qualification rate; it ensures that the deformation of the blank is within the control range and does not affect machining; it further controls the springback during shaping; and it can be adapted to various aluminum alloy subframes. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of one side of the end pressure plate of this utility model.

[0015] Figure 2 This is a structural schematic diagram of one side of the horizontal alignment cylinder of the ram's horn of this utility model.

[0016] Figure 3 This is a schematic diagram of the front structure of the present invention, showing the workpiece mounted on the tooling.

[0017] Figure 4 This is a schematic diagram of the rear structure of the present invention, showing the workpiece mounted on the tooling. Detailed Implementation

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] As shown in the attached drawings, this utility model includes a clamping body 1, an end pressure plate 2, a pair of ram's horn straightening mechanisms, a pair of ear-plate straightening cylinders 3, and a set of frame straightening cylinders 4. A set of limiting blocks 5 is provided on the top of the clamping body 1, and the end pressure plate 2 is installed on the clamping body 1 through the support block. An end support column is provided below the pressing end of the end pressure plate 2. The horn-aligning mechanism includes a horn-aligning horizontal alignment cylinder 6, a pair of detection pins 7, and a side support column 8. The horn-aligning horizontal alignment cylinder 6 is mounted on the fixture body 1 via a cylinder bracket. A alignment hook is provided at the end of the piston rod of the horn-aligning horizontal alignment cylinder 6. The detection pins 7 are mounted on the fixture body 1 via a pin bracket. The side support column 8 is mounted on the fixture body 1, with the detection head of the detection pin 7 facing the side support column 8. An upper pressure plate 9 is provided above the side support column 8, and the upper pressure plate 9 is mounted on the fixture body 1 via a support block. The lug shaping oil cylinder 3 is vertically installed on the clamp body 1, the end of the piston rod of the lug shaping oil cylinder 3 is provided with a shaping hook, and the lug shaping oil cylinder 3 is located between a pair of horn shaping institutions, The frame shaping oil cylinder 4 is vertically installed on the clamp body 1, the end of the piston rod of the frame shaping oil cylinder 4 is provided with a shaping hook, and the frame shaping oil cylinder 4 is located in the middle part of the clamp body 1.

[0024] A workpiece limiting groove is provided on the side wall of the limiting block 5.

[0025] The number of a group of frame shaping oil cylinders 4 is four, wherein one frame shaping oil cylinder 4 is located between a pair of lug shaping oil cylinders 3, and the remaining three frame shaping oil cylinders 4 are installed in the middle part of the clamp body 1 in a triangular distribution.

[0026] A needle through hole is formed on the ejector pin bracket, and the detection ejector pin 7 is horizontally inserted into the needle through hole.

[0027] A pair of lug spacing detection plates 10 is arranged between a pair of lug shaping oil cylinders 3, and the lug spacing detection plates 10 are installed on the clamp body 1 through a detection bracket.

[0028] An installation groove is formed at the top of the detection bracket, a through pin hole is formed on the installation groove, and one end of the lug spacing detection plate 10 is located in the installation groove and is movably installed in the through pin hole through a pin shaft.

[0029] The lug spacing detection plate 10 is an L-shaped detection plate.

[0030] A horn vertical shaping oil cylinder 11 is vertically arranged on the clamp body 1, and the end of the piston rod of the horn vertical shaping oil cylinder 11 is provided with a shaping hook.

[0031] Chutes are respectively arranged at the piston rod ends of the lug shaping oil cylinder 3, the frame shaping oil cylinder 4 and the horn horizontal shaping oil cylinder 6, and a sliding block matched with the chute is arranged at the bottom of the shaping hook.

[0032] Example 1: Place the integral aluminum alloy front subframe 100 on the clamp body 1, support and limit the aluminum alloy front subframe 100 through a group of limiting blocks 5 and side support columns 8, the end pressure plate 2 is installed on the support block through bolts, press the aluminum alloy front subframe 100 on the end support column from above, the upper pressure plate 9 is installed on the support block through bolts, press the aluminum alloy front subframe 100 on the side support column 8 from above, the detection ejector pin 7 is horizontally inserted into the needle through hole, it is qualified if the end of the detection ejector pin 7 just contacts the aluminum alloy front subframe 100. Rotate the lug spacing detection plate 10 to a horizontal state around the pin shaft, put the end of the lug spacing detection plate 10 into the lug of the aluminum alloy front subframe 100, it is qualified if it can be put in normally.

[0033] When alignment is required, the horizontal alignment cylinder 6 pushes and pulls the rear horn portion of the aluminum alloy front subframe 100 horizontally via the alignment hook to perform alignment. The lug alignment cylinder 3 pushes and pulls the lug portion of the aluminum alloy front subframe 100 up and down via the alignment hook to perform alignment. The vertical alignment cylinder 11 pushes and pulls the front horn portion of the aluminum alloy front subframe 100 up and down via the alignment hook to perform alignment. The frame alignment cylinder 4 pushes and pulls the frame portion of the aluminum alloy front subframe 100 up and down via the alignment hook to perform alignment. After alignment is completed, remove the alignment hook, pull out the detection pin 7, flip the lug spacing detection piece 10 upwards to release the pressure of the end pressure plate 2 and the upper pressure plate 9, and then remove the aluminum alloy front subframe 100.

Claims

1. A semi-automatic alignment fixture for an integral aluminum alloy front subframe, characterized in that... It includes a clamping body (1), an end pressure plate (2), a pair of ram's horn straightening mechanisms, a pair of ear-plate straightening cylinders (3), and a set of frame straightening cylinders (4). A set of limiting blocks (5) is provided on the top of the clamping body (1), and the end pressure plate (2) is installed on the clamping body (1) through the support block. An end support column is provided below the pressing end of the end pressure plate (2). The horn-aligning mechanism includes a horn-aligning horizontal alignment cylinder (6), a pair of detection pins (7), and a side support column (8). The horn-aligning horizontal alignment cylinder (6) is mounted on the fixture (1) via a cylinder bracket. A alignment hook is provided at the end of the piston rod of the horn-aligning horizontal alignment cylinder (6). The detection pins (7) are mounted on the fixture (1) via a pin bracket. The side support column (8) is mounted on the fixture (1). The detection head of the detection pins (7) faces the side support column (8). An upper pressure plate (9) is provided above the side support column (8). The upper pressure plate (9) is mounted on the fixture (1) via a support block. The ear-shaped oil cylinder (3) is vertically mounted on the clamp body (1). The piston rod end of the ear-shaped oil cylinder (3) is provided with a shaping hook. The ear-shaped oil cylinder (3) is located between a pair of ram's horn shaping mechanisms. The frame straightening cylinder (4) is vertically mounted on the clamping body (1). The piston rod end of the frame straightening cylinder (4) is provided with a straightening hook. The frame straightening cylinder (4) is located in the middle of the clamping body (1).

2. The semi-automatic alignment fixture for an integral aluminum alloy front subframe according to claim 1, characterized in that, The side wall of the limiting block (5) is provided with a workpiece limiting groove.

3. The semi-automatic alignment fixture for an integral aluminum alloy front subframe according to claim 1, characterized in that, The number of frame-aligning cylinders (4) is four. One frame-aligning cylinder (4) is located between a pair of ear-shaped cylinders (3), and the other three frame-aligning cylinders (4) are arranged in a triangle and installed in the middle of the clamping body (1).

4. The integrated aluminum alloy front subframe semi-automatic straightening tool of claim 1, wherein, The ejector pin holder has a needle hole, and the test ejector pin (7) is inserted horizontally into the needle hole.

5. The integrated aluminum alloy front subframe semi-automatic straightening tool of claim 1, wherein, A pair of ear-plate spacing detection plates (10) are provided between a pair of ear-plate alignment cylinders (3). The ear-plate spacing detection plates (10) are installed on the clamp body (1) through a detection bracket.

6. The integrated aluminum alloy front subframe semi-automatic straightening fixture of claim 5, wherein, The top of the testing bracket has a mounting groove with a through pin hole. One end of the ear-plate spacing testing piece (10) is located in the mounting groove and is movably installed in the through pin hole via a pin.

7. The semi-automatic alignment fixture for an integral aluminum alloy front subframe according to claim 6, characterized in that, The ear-plate spacing detection piece (10) is an L-shaped detection piece.

8. The integrated aluminum alloy front subframe semiautomatic straightening fixture of claim 1, wherein, A ram's horn vertical alignment cylinder (11) is vertically mounted on the clamp body (1), and an alignment hook is provided at the end of the piston rod of the ram's horn vertical alignment cylinder (11).

9. The semi-automatic alignment fixture for an integral aluminum alloy front subframe according to claim 8, characterized in that, The piston rod ends of the ear-shaped oil cylinder (3), the frame-shaped oil cylinder (4) and the ram's horn horizontal-shaped oil cylinder (6) are respectively provided with sliding grooves, and the bottom of the shaping hook is provided with a slider that matches the sliding groove.

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