A special shape correcting tool for a bow-shaped beam

Abstract

A special straightening fixture for bow beams includes a straightening table (1), on which are respectively provided a set of support limiting devices (2) for supporting and fixing the bow beam, a set of reference point positioning blocks (3) for positioning the bow beam, a set of straightening detection pins (4) for verifying the bow beam, a side straightening hydraulic cylinder (5) for straightening the bow beam in the horizontal direction, a pair of top straightening hydraulic cylinders (6) for straightening the bow beam in the vertical direction, and a pair of fastening screws (7) for locking the bow beam. The advantages of this utility model are: by analyzing the structure, the deformed parts are found, and then the extension and retraction of the hydraulic cylinders are used to correct the deformed parts of the bow beam. This can greatly improve the blank qualification rate of the product, 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 fixture for bow-shaped beams. 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, arch beam castings are prone to deformation during casting, placement, and heat treatment, and the deformation trend of each part is inconsistent, making detection and identification extremely difficult. After being transferred to the machining process, deformed products exhibit issues such as misaligned holes and lack of shine during processing, affecting processing efficiency and wasting processing costs. Therefore, it is necessary to inspect and correct the castings to ensure casting quality. Current methods for correcting arch beams mostly involve pressing the parts together, striking with a wooden hammer, or using screw tightening mechanisms to press the deformed areas. Manual striking or screw tightening mechanisms are time-consuming and labor-intensive, and the force is difficult to control; insufficient force is not enough to cause plastic deformation in chassis parts, only elastic deformation, which is unsuitable for correction. Furthermore, arch beams have many bending points, making overall correction unsuccessful. Utility Model Content

[0003] The purpose of this utility model is to address the above-mentioned shortcomings by providing a special alignment fixture for bow-shaped beams.

[0004] This utility model includes a straightening platform, which is equipped with a set of support limiting devices for supporting and fixing the bow beam, a set of reference point positioning blocks for positioning the bow beam, a set of straightening detection pins for verifying the bow beam, a side straightening hydraulic cylinder for straightening the bow beam in the horizontal direction, a pair of top straightening hydraulic cylinders for straightening the bow beam in the vertical direction, and a pair of fastening screws for locking the bow beam.

[0005] There are three support limiting devices, which are respectively arranged in the middle of the bow beam and at the ends of the two cantilever ram's horns. The support limiting device includes a support column and a clamping cylinder. The support column is fixed to the straightening table, and the piston rod of the clamping cylinder is provided with a pressure block at one end located above the support column.

[0006] There are three reference point positioning blocks, which are respectively arranged in the middle of the bow beam and at the right cantilever ram's horn.

[0007] There are three alignment and inspection pins, which are distributed on the left side of the bow beam and at the end of the cantilevered ram's horn on the left side.

[0008] The side-aligning hydraulic cylinder is horizontally fixed to the alignment platform via a support base and is located inside the cantilevered horn on the left side. A U-shaped alignment block is provided on the piston rod of the side-aligning hydraulic cylinder.

[0009] A pair of top-aligning hydraulic cylinders are vertically fixed to the alignment platform via connecting seats. The pair of top-aligning hydraulic cylinders are located at the cantilevered ram's horn joints at both ends of the bow beam. The piston rods of the top-aligning hydraulic cylinders are equipped with I-shaped alignment blocks.

[0010] A pair of fastening screws are located at the middle of the bow beam and the inner side of the right cantilever horn, respectively. A screw mounting seat is provided on the straightening platform, and the fastening screws are screwed onto the screw mounting seat.

[0011] The advantages of this invention are: by analyzing the structure, the deformed parts are found, and then the extension and retraction of the hydraulic cylinder is used to correct the deformed parts of the bow beam. This can greatly improve the blank qualification rate of the product, avoid the waste of processing and casting resources due to product scrap caused by deformation, and save costs significantly. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the structure of this utility model in use. Detailed Implementation

[0014] 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.

[0015] 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.

[0016] 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.

[0017] 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.

[0018] As shown in the attached drawings, the present invention includes a straightening platform 1, on which are respectively provided a set of support limiting devices 2 for supporting and fixing the bow beam, a set of reference point positioning blocks 3 for positioning the bow beam, a set of straightening detection pins 4 for verifying the bow beam, a side straightening hydraulic cylinder 5 for straightening the bow beam in the horizontal direction, and a pair of top straightening hydraulic cylinders 6 for straightening the bow beam in the vertical direction.

[0019] The bow-shaped beam is first positioned by the reference point positioning block 3, then clamped by the support limiting device 2. The side straightening hydraulic cylinder 5 and a pair of top straightening hydraulic cylinders 6 are activated to straighten the bow-shaped beam.

[0020] The bow-shaped beam is a symmetrical component, and its middle section and the connection points of the two cantilevered ram's horns at both ends are prone to twisting and deformation. Therefore, in this case, the middle section of the bow-shaped beam and the ends of the two cantilevered ram's horns are clamped and fixed, and the entire bow-shaped beam is corrected horizontally by the side-aligning hydraulic cylinder 5. The connection points at both ends of the bow-shaped beam are corrected from the top and bottom by a pair of top-aligning hydraulic cylinders 6.

[0021] Preferably, there are three support limiting devices 2, which are respectively arranged in the middle of the bow beam and at the ends of the two cantilever ram's horns. The support limiting device 2 includes a support column 10 and a pressing cylinder 11. The support column 10 is fixed to the straightening table 1, and the piston rod of the pressing cylinder 11 is provided with a pressing block 12 with one end located above the support column 10.

[0022] The support column 10 supports the bow beam from the bottom. The clamping cylinder 11 controls the pressure block 12 to press the bow beam onto the support column 10 from above and below for fixation. In this case, the top of the support column 10 on the left side is a rectangular plane, which makes it easier for the side-aligning hydraulic cylinder 5 to correct the horizontal direction of the cantilever horn on the left side to have horizontal correction space on the support column 10.

[0023] Preferably, there are three reference point positioning blocks 3, which are respectively arranged in the middle of the bow beam and at the right cantilever horn.

[0024] The three reference point positioning blocks 3 are all located on the outside of the bow beam. By positioning the right side of the bow beam, the clamping cylinder 11 clamps it from the top. A pair of fastening screws 7 are located inside the right side of the bow beam and are set in the opposite direction to the three reference point positioning blocks 3. The bow beam is clamped from the inside horizontal direction. The right side of the entire bow beam is in a fixed state, while the left side is in a relatively movable state in the horizontal direction. It can be displaced under the drive of the side correction hydraulic cylinder 5 to correct the opening of the entire bow beam.

[0025] Preferably, there are three alignment detection pins 4, which are distributed on the left side of the bow beam and at the end of the cantilevered ram's horn on the left side.

[0026] Since the left side of the bow beam is the movable correction end, the three correction detection pins 4 are located on the outside of one end of the bow beam, opposite to the side correction hydraulic cylinder 5. The correction detection pins 4 are used to check whether the correction is qualified.

[0027] Furthermore, the side-aligning hydraulic cylinder 5 is horizontally fixed to the alignment table 1 via a support base and is located inside the left side of the cantilevered horn. The piston rod of the side-aligning hydraulic cylinder 5 is provided with a U-shaped alignment block 15.

[0028] The left cantilever horn is located inside the U-shaped straightening block 15. The side straightening hydraulic cylinder 5 controls the U-shaped straightening block 15 to move back and forth to straighten the left cantilever horn in the horizontal direction, thereby adjusting the opening of the entire bow beam.

[0029] Furthermore, a pair of top-aligning hydraulic cylinders 6 are respectively fixed vertically to the alignment platform 1 via connecting seats. The pair of top-aligning hydraulic cylinders 6 are respectively located at the cantilevered horn joints at both ends of the bow beam. The piston rod of the top-aligning hydraulic cylinder 6 is provided with an I-shaped alignment block 16.

[0030] The I-shaped straightening block 16 can simultaneously straighten the ends of the crossbeam and the cantilevered horns of the bow beam.

[0031] A pair of fastening screws 7 are located in the middle of the bow beam and on the inner side of the right cantilever horn, respectively. The straightening platform 1 is provided with a screw mounting seat, and the fastening screws 7 are screwed onto the screw mounting seat.

Claims

1. A special straightening fixture for bow-shaped beams, characterized in that... The device includes a calibration table (1), which is equipped with a set of support limiting devices (2) for supporting and fixing the bow beam, a set of reference point positioning blocks (3) for positioning the bow beam, a set of calibration detection pins (4) for verifying the bow beam, a side calibration hydraulic cylinder (5) for calibrating the bow beam in the horizontal direction, a pair of top calibration hydraulic cylinders (6) for calibrating the bow beam in the vertical direction, and a pair of fastening screws (7) for locking the bow beam.

2. The special alignment fixture for bow-shaped beams according to claim 1, characterized in that... There are three support limiting devices (2), which are respectively arranged in the middle of the bow beam and at the ends of the two cantilever horns. The support limiting device (2) includes a support column (10) and a pressing cylinder (11). The support column (10) is fixed on the straightening table (1), and the piston rod of the pressing cylinder (11) is provided with a pressure block (12) with one end located above the support column (10).

3. The special alignment fixture for bow-shaped beams according to claim 1, characterized in that... There are three reference point positioning blocks (3), which are respectively arranged in the middle of the bow beam and at the right cantilever ram's horn.

4. The special alignment fixture for bow-shaped beams according to claim 1, characterized in that... There are three calibration pins (4), which are distributed on the left side of the bow beam and at the end of the cantilevered ram's horn on the left side.

5. A special alignment fixture for an arc-shaped beam according to claim 1, characterized in that... The side-aligning hydraulic cylinder (5) is horizontally fixed to the alignment table (1) via a support seat and is located inside the left side of the cantilever horn. The piston rod of the side-aligning hydraulic cylinder (5) is provided with a U-shaped alignment block (15).

6. A special alignment fixture for an arched beam according to claim 1, characterized in that... A pair of top-aligning hydraulic cylinders (6) are fixed vertically to the alignment platform (1) via connecting seats. The pair of top-aligning hydraulic cylinders (6) are located at the cantilevered horn joints at both ends of the bow beam. The piston rod of the top-aligning hydraulic cylinder (6) is provided with an I-shaped alignment block (16).

7. A special alignment fixture for bow-shaped beams according to claim 1, characterized in that... A pair of fastening screws (7) are located in the middle of the bow beam and on the inner side of the right cantilever horn, respectively. The straightening platform (1) is provided with a screw mounting seat, and the fastening screws (7) are screwed onto the screw mounting seat.

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