Special straightening tool for horn front subframe

Abstract

A special straightening fixture for a front subframe with spurs includes a straightening table (1). The straightening table (1) is equipped with a positioning clamping device (2), a pair of spur straightening devices (3), a pair of end straightening cylinders (4), a crossbeam straightening cylinder (5), and a set of detection columns (9). The positioning clamping device (2) includes a set of Z-axis reference point positioning clamping components (6), a set of Y-axis reference point positioning components (7), and an X-axis reference point positioning components (8) for positioning and clamping the front and rear ends of the front subframe respectively. The advantages of this utility model are: the product deformation is monitored by the straightening fixture, the deformed parts are found by structural analysis, and then the deformed parts of the front subframe with spurs are corrected by the extension and retraction of the hydraulic cylinder. This can greatly improve the product blank qualification rate, avoid the waste of processing and casting resources due to product scrap caused by deformation, and greatly save costs.

Description

Technical Field

[0001] This utility model relates to the field of casting straightening technology, specifically to a special straightening tool for a front subframe with ram's horns. Background Technology

[0002] New energy is a major trend in the global automotive industry's transformation and upgrading, and green development; 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, front subframe castings with steering knuckles are highly susceptible to deformation during casting, placement, and heat treatment. Furthermore, the deformation trend varies from part to part, making detection and identification extremely difficult. When transferred to the machining process, deformed products exhibit issues such as misaligned holes and lack of shine during processing, affecting efficiency and wasting costs. Currently, there is no universally accepted and effective process for correcting front subframes with steering knuckles. Methods include pressing the parts with a wooden hammer, using screw tightening mechanisms to press deformed areas, and using hydraulic cylinders for correction, but none of these methods yield ideal results. Utility Model Content

[0003] The purpose of this utility model is to address the above-mentioned shortcomings by providing a special alignment tool for a front subframe with steering knuckles.

[0004] This utility model includes an orthopedic table, on which are respectively provided a positioning clamping device, a pair of horn-correcting devices, a pair of end-correcting cylinders, a crossbeam-correcting cylinder, and a set of detection columns.

[0005] The positioning and clamping device includes a set of Z-axis reference point positioning and clamping components, a set of Y-axis reference point positioning components, and an X-axis reference point positioning component for positioning and clamping the front and rear ends of the front subframe, respectively.

[0006] The ram's horn straightening device includes an X-axis straightening cylinder, a Y-axis straightening cylinder, and a Z-axis straightening cylinder, which respectively correct the ram's horn in each direction.

[0007] A set of detection columns are located on the ram's horn side opposite the X-axis correction cylinder and the Y-axis correction cylinder, respectively.

[0008] A set of three Z-axis reference point positioning clamping assemblies are located on both sides of the front end and one side of the rear end of the front subframe, respectively. The Z-axis reference point positioning clamping assembly includes a positioning support column, a clamping seat and a clamping plate. The clamping plate is movably mounted on the clamping seat and fastened by a screw. The clamping plate is located above the positioning support column.

[0009] A set of Y-axis reference point positioning components consists of two parts, located on both sides of the X-axis reference point positioning component. The Y-axis reference point positioning component includes a Y-axis positioning seat and a Y-axis positioning block. The Y-axis positioning block is adjustablely mounted on the Y-axis positioning seat via a screw.

[0010] The X-axis reference point positioning assembly includes an X-axis positioning support and an X-axis positioning block. The X-axis positioning block is hinged to one side of the X-axis positioning support via a pin, and the X-axis positioning support is provided with a tensioning screw to tighten the X-axis positioning block.

[0011] The piston rods of the end-alignment cylinder, the crossbeam alignment cylinder, the X-axis alignment cylinder, the Y-axis alignment cylinder, and the Z-axis alignment cylinder are all equipped with slide blocks, and C-shaped alignment blocks are slidably connected to the slide blocks.

[0012] The C-shaped correction block of the beam-correcting cylinder is equipped with a balance pressure bar.

[0013] The advantages of this utility model are: by using a calibration fixture to monitor product deformation, by analyzing the structure to find the deformed parts, and then using the extension and retraction motion of a hydraulic cylinder to correct the deformed parts of the front subframe with steering knuckles, the product blank qualification rate can be greatly improved, avoiding the waste of processing and casting resources due to product scrap caused by deformation, and significantly saving costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the positioning and clamping device.

[0016] Figure 3 This is a schematic diagram of the ram's horn-shaped device.

[0017] Figure 4 This is a schematic diagram of the structure of this utility model in use. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model 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 present 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 present invention without inventive effort are within the scope of protection of the present invention. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0020] In the description of the embodiments of this utility model, 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 utility model product is in use, they are only for the convenience of describing the utility model 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 utility model. Furthermore, if terms such as "first" or "second" appear in the description of this utility model, they are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] In the description of the embodiments of this utility model, 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 this utility model based on the specific circumstances.

[0022] As shown in the attached drawing, this utility model includes an orthopedic table 1, on which are respectively provided a positioning clamping device 2, a pair of horn-correcting devices 3, a pair of end-correcting cylinders 4, a crossbeam-correcting cylinder 5, and a set of detection columns 9.

[0023] The positioning and clamping device 2 includes a set of Z-axis reference point positioning and clamping components 6, a set of Y-axis reference point positioning components 7, and an X-axis reference point positioning components 8, which respectively position and clamp the front and rear ends of the front subframe.

[0024] The ram's horn straightening device 3 includes an X-axis straightening cylinder 10, a Y-axis straightening cylinder 11, and a Z-axis straightening cylinder 12, which respectively correct the ram's horn in each direction.

[0025] A set of detection columns 9 are located on the ram's horn side opposite to the X-axis correction cylinder 10 and the Y-axis correction cylinder 11, respectively.

[0026] The positioning and clamping device 2 is a manual positioning and clamping device. The front subframe is positioned and clamped by the positioning and clamping device 2. Then, a pair of horn straightening devices 3, a pair of end straightening cylinders 4, and a crossbeam straightening cylinder 5 are activated in sequence to straighten the two horn parts, the ends of the front subframe, and the crossbeam parts of the front subframe respectively. A set of detection columns 9 are located on both sides of the horn parts to monitor whether the correction is in place.

[0027] Specifically, there are three Z-axis reference point positioning clamping assemblies 6, located on both sides of the front end and one side of the rear end of the front subframe. The Z-axis reference point positioning clamping assembly 6 includes a positioning support column 15, a clamping seat 16 and a clamping plate 17. The clamping plate 17 is movably mounted on the clamping seat 16 and fastened by a screw. The clamping plate 17 is located above the positioning support column 15.

[0028] Three of the four ends of the front subframe are fixed, and the remaining end is movable. The movable part is shaped by the up-and-down pressing of the end-forming cylinder 4. Positioning support columns 15 support the bottom of the front subframe. The clamping plate 17 has a screw clearance hole, and the screw is screwed onto the clamping seat 16, used to press one end of the clamping plate 17 downwards onto the front subframe. The front subframe is clamped in the Z-axis direction through the up-and-down cooperation of the positioning support columns 15 and the clamping plate 17. In this case, the two positioning support columns 15 at the front end are contoured surfaces that mate with the front end of the front subframe, used for quick positioning of the front subframe.

[0029] There are two Y-axis reference point positioning components 7, located on both sides of the X-axis reference point positioning component 8. The Y-axis reference point positioning component 7 includes a Y-axis positioning seat 20 and a Y-axis positioning block 21. The Y-axis positioning block 21 is adjustablely mounted on the Y-axis positioning seat 20 by a screw.

[0030] The Y-axis positioning seat 20 is provided with a U-shaped groove. The mounting hole at the front end of the front subframe is placed in the U-shaped groove. The Y-axis positioning block 21 is a movable part located in the U-shaped groove of the Y-axis positioning seat 20. By adjusting the position of the Y-axis positioning block 21, the mounting hole at the front end of the front subframe is clamped from the Y-axis direction.

[0031] A screw is screwed onto the Y-axis positioning seat 20, and the Y-axis positioning block 21 is movably placed on the Y-axis positioning seat 20. The Y-axis positioning block 21 is controlled by the screw to translate in the Y-axis direction to achieve the clamping action.

[0032] The X-axis reference point positioning assembly 8 includes an X-axis positioning support 25 and an X-axis positioning block 26. The X-axis positioning block 26 is hinged to one side of the X-axis positioning support 25 by a pin. The X-axis positioning support 25 is provided with a tensioning screw 27 to tighten the X-axis positioning block 26.

[0033] The X-axis positioning support 25 is located between two mounting holes at the front end of the front subframe. When performing the X-axis positioning and clamping action, the X-axis positioning block 26 acts as a movable block, and its top end can swing left and right to press against one of the mounting holes at the front end of the front subframe from the X-axis direction.

[0034] Furthermore, the piston rods of the end-alignment cylinder 4, the crossbeam alignment cylinder 5, the X-axis alignment cylinder 10, the Y-axis alignment cylinder 11, and the Z-axis alignment cylinder 12 are all equipped with slide blocks, and C-shaped alignment blocks 30 are slidably connected to the slide blocks. The C-shaped alignment blocks 30 are manually movable. After the various parts of the front subframe are positioned and clamped, the corresponding C-shaped alignment blocks 30 are moved to the alignment position, and the front subframe is squeezed and stretched in the X-axis, Y-axis, or Z-axis direction by the corresponding cylinder drive.

[0035] Furthermore, the C-shaped correction block 30 of the crossbeam straightening cylinder 5 is provided with a balancing pressure rod 31. The balancing pressure rod 31 is fixed to the C-shaped correction block 30, which can increase the contact area with the crossbeam, compress the crossbeam as a whole, and prevent local deformation.

Claims

1. A special alignment tooling for a front subframe with saddle horns, characterized in that... It includes an orthopedic table (1), on which are respectively provided a positioning clamping device (2), a pair of horn-correcting devices (3), a pair of end-correcting cylinders (4), a crossbeam-correcting cylinder (5) and a set of detection columns (9). The positioning and clamping device (2) includes a set of Z-axis reference point positioning and clamping components (6), a set of Y-axis reference point positioning components (7) and X-axis reference point positioning components (8) for positioning and clamping the front and rear ends of the front subframe respectively. The horn-correcting device (3) includes an X-axis correction cylinder (10), a Y-axis correction cylinder (11), and a Z-axis correction cylinder (12) that correct the horns in each direction. A set of detection columns (9) are located on the horn side opposite to the X-axis correction cylinder (10) and the Y-axis correction cylinder (11).

2. The special alignment tooling for a front subframe with saddle horns according to claim 1, characterized in that... A set of three Z-axis reference point positioning clamping assemblies (6) are located on the front two sides and the rear one side of the front subframe respectively. The Z-axis reference point positioning clamping assembly (6) includes a positioning support column (15), a clamping seat (16) and a clamping plate (17). The clamping plate (17) is movably installed on the clamping seat (16) and fastened by a screw. The clamping plate (17) is located above the positioning support column (15).

3. The special alignment tooling for a front subframe with saddle horns according to claim 1, characterized in that... There are two Y-axis reference point positioning components (7), which are located on both sides of the X-axis reference point positioning component (8). The Y-axis reference point positioning component (7) includes a Y-axis positioning seat (20) and a Y-axis positioning block (21). The Y-axis positioning block (21) is adjustablely mounted on the Y-axis positioning seat (20) by a screw.

4. A special alignment tooling for a front subframe with saddle horns as described in claim 3, characterized in that... The X-axis reference point positioning assembly (8) includes an X-axis positioning support (25) and an X-axis positioning block (26). The X-axis positioning block (26) is hinged to one side of the X-axis positioning support (25) by a pin. The X-axis positioning support (25) is provided with a tensioning screw (27) to tighten the X-axis positioning block (26).

5. A special alignment tooling for a front subframe with saddle horns as described in claim 1, characterized in that... The piston rods of the end-alignment cylinder (4), the beam alignment cylinder (5), the X-axis alignment cylinder (10), the Y-axis alignment cylinder (11), and the Z-axis alignment cylinder (12) are all equipped with slide blocks, and C-shaped alignment blocks (30) are slidably connected on the slide blocks.

6. A special alignment tooling for a front subframe with saddle horns as described in claim 1, characterized in that... The C-shaped correction block (30) of the beam correction cylinder (5) is equipped with a balance pressure bar (31).

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