A front axle forging machining fixture and method

Abstract

The application provides a front axle forging machining clamp and method, which comprises a front axle for clamping, the front axle comprising two leaf spring seats, a mounting plate and a clamping device, two positioning mechanisms are arranged on the mounting plate in the horizontal direction, the positioning mechanisms correspond to the leaf spring seats one by one, the positioning mechanisms are used for adaptively supporting the corresponding leaf spring seats, the clamping device is arranged on the mounting plate, a front axle placing area is formed between the clamping end of the clamping device and the corresponding positioning mechanism, and the clamping device is used for clamping the front axle placed in the front axle placing area. The beneficial effects of the application are that the positioning mechanism is in contact with the leaf spring seat of the front axle, the positioning mechanism can be adaptively adjusted according to the leaf spring seat of the front axle, the planeness of the upper surface of the front axle leaf spring seat is adapted, the clamping device is used for clamping the front axle by pressing the front axle from above, the machining reference and the detection reference are consistent, and reference conversion is not needed in the machining process.

Description

Technical Field

[0001] This invention relates to the field of front axle forging technology, and in particular to a front axle forging machining fixture and method. Background Technology

[0002] Currently, to meet product technical and processing requirements, the first step in the traditional machining of the forged front axle leaf spring seat is to mill the upper surface of the leaf spring seat. After the upper surface of the leaf spring seat is machined, the kingpin hole is then machined using two planes or three fixed supports plus one floating support. Since the flatness of the upper surface of the leaf spring seat is good, this positioning method can meet the front axle machining requirements. However, the machining process requires at least one datum conversion, and the inconsistency between the machining datum and the inspection datum leads to problems such as low machining efficiency and large fluctuations in machining quality.

[0003] With advancements in forging technology, the flatness of a single plane and the flatness of two planes (when considered as one plane) on the upper surface of a leaf spring seat can be achieved through forging alone, eliminating the need for further machining of the upper surface. However, the kingpin hole still needs to be machined using the upper surface of the leaf spring seat as a positioning datum. In particular, if the streamlined, near-net-shape front axle structure adopts a traditional positioning method, the large flatness of the upper surface of the front axle leaf spring seat can easily lead to unstable positioning during front axle machining, significant movement of the kingpin hole machining position, inconsistency with the assembly datum, and large changes in the kingpin hole angle. If the traditional machining process is followed, first machining the front axle leaf spring seat surface with large flatness and then positioning and machining the kingpin hole, the streamlined, near-net-shape front axle structure will be destroyed, and the technological value of the streamlined, near-net-shape front axle structure cannot be realized. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a front axle forging machining fixture to solve the technical problems in the prior art, such as poor clamping effect of the fixture when the flatness of the upper surface of the front axle leaf spring seat is large, which affects subsequent processing.

[0005] To achieve the above and other related objectives, the present invention provides a front axle forging machining fixture for clamping a front axle, the front axle including two leaf spring seats, comprising:

[0006] The mounting plate has two positioning mechanisms arranged in the horizontal direction. Each positioning mechanism corresponds to a leaf spring seat and is used to adaptively support the corresponding leaf spring seat.

[0007] A clamping device is disposed on the mounting plate, and a front axle placement area is formed between the clamping end of the clamping device and the corresponding positioning plate. The clamping device is used to clamp the front axle placed in the front axle placement area.

[0008] Optionally, two positioning mechanisms are provided on the mounting plate to adaptively adjust the front axle leaf spring seat. These mechanisms can adapt to positioning surfaces with large flatness, eliminating the need for machining the front axle leaf spring seat surface. They can stably complete the clamping, and the kingpin hole can be directly machined afterward, avoiding damage to the streamlined structure of the near-net-shape front axle and realizing the technological value of its forging.

[0009] Optionally, the positioning mechanism includes a positioning plate and a mounting base. The positioning plate is hinged to the corresponding mounting base. The rotation directions of the positioning plates of the two positioning mechanisms are perpendicular to each other. The positioning plate is used for adaptive adjustment with the leaf spring seat of the front axle.

[0010] Optionally, a hinge block is provided on one side of the positioning plate, and the positioning plate is hinged to the corresponding mounting seat through the hinge block. The other side of the positioning plate is used to support the corresponding leaf spring seat.

[0011] Optionally, the mounting base is further provided with a limiting device, which is used to limit the rotation angle of the positioning plate.

[0012] Optionally, the limiting device extends above the positioning plate, and the distance between the limiting device and the positioning plate forms an adjustment area.

[0013] Optionally, the mounting plate is further provided with a centering device, which includes two centering mechanisms located on both sides of the two positioning mechanisms. The two centering mechanisms are used to adjust the two ends of the front axle to position the front axle.

[0014] Optionally, the centering mechanism is movably mounted on the mounting plate, and the centering mechanism can be close to or away from the corresponding front axle end.

[0015] Optionally, the clamping device includes a fixed end and a clamping end. The fixed end is mounted on the mounting plate, and the clamping end is movably disposed on the fixed end. The clamping end can be close to or away from the corresponding positioning plate.

[0016] Optionally, the clamping point of the clamping end and the front axle corresponds to the center of the corresponding hinge block to ensure that the front axle is subjected to balanced force during clamping.

[0017] Optionally, the mounting plate is further provided with a clamping drive device, which is used to drive the clamping end of the clamping device to clamp or release the front axle.

[0018] Optionally, a front axle forging machining method is also disclosed. Using the aforementioned front axle machining fixture, the front axle is placed on a positioning mechanism for supporting the front axle. The leaf spring seats of the front axle correspond one-to-one with the positioning mechanism. The two ends of the front axle are adjusted using a centering device to ensure that the front axle is in the correct position in the horizontal and vertical directions. Then, the positioning mechanism adapts to the leaf spring seats of the front axle and completes the positioning. Finally, the front axle is clamped using a clamping device.

[0019] As described above, the front axle forging machining fixture and method of the present invention has the following beneficial effects: by utilizing the positioning mechanism to contact the leaf spring seat of the front axle, the positioning mechanism can be adaptively adjusted according to the leaf spring seat of the front axle to adapt to the flatness of the upper surface of the leaf spring seat of the front axle. Then, the clamping device is used to press the front axle from above to complete the clamping, realizing a machining process without reference conversion during the front axle machining process, and ensuring that the machining reference and the inspection reference are consistent, thus guaranteeing the process value of the streamlined structure of the front axle with full streamline near net forming. Attached Figure Description

[0020] Figure 1 The diagram shows a structural schematic of a front axle forging machining fixture according to one embodiment of the present invention.

[0021] Figure 2 The diagram shown is a schematic representation of the structure for clamping the front axle in one embodiment of the present invention.

[0022] Part Number Explanation

[0023] 1 Mounting plate

[0024] 1a Clamping drive device

[0025] 1b centering drive device

[0026] 2a positioning plate

[0027] 2b mounting base

[0028] 2c hinge block

[0029] 2D Adjustable Limit Block

[0030] 3 clamping devices

[0031] 4-point organization Detailed Implementation

[0032] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0033] Please see Figures 1 to 2 It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show components relevant to the present invention and are not drawn according to the actual number, shape, and size of components in implementation. In actual implementation, the form, quantity, and proportion of each component can be arbitrarily changed, and the component layout may be more complex. The structures, proportions, and sizes shown in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation conditions of the present invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of the present invention, should still fall within the scope of the technical content disclosed in the present invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are only for clarity of description and are not intended to limit the scope of the present invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the present invention.

[0034] Please see Figures 1 to 2 This invention provides a front axle forging machining fixture and method for clamping a front axle, the front axle including two leaf spring seats, comprising:

[0035] For example, in the mounting plate 1, two positioning mechanisms are provided in the horizontal direction. The positioning mechanisms correspond one-to-one with the leaf spring seats and are used to adaptively support the corresponding leaf spring seats.

[0036] A clamping device 3 is disposed on the mounting plate 1. The clamping end of the clamping device 3 forms a front axle placement area with the corresponding positioning plate 2a. The clamping device 3 is used to clamp the front axle placed in the front axle placement area.

[0037] It should also be noted that during installation, the front axle can be placed on the positioning mechanism from top to bottom, so that the positioning mechanism corresponds to the leaf spring seat. Under its own weight, the positioning mechanism will adapt to the leaf spring seat and then use the clamping device to fix the front axle, thus completing the clamping.

[0038] Furthermore, a centering device is also provided on the mounting plate 1, which can adjust the position of the front axle so that the front axle is in the correct position.

[0039] For example, the positioning mechanism includes a positioning plate 2a and a mounting base 2b. The positioning plate 2a is hinged to the corresponding mounting base 2b. The rotation directions of the positioning plates 2a of the two positioning mechanisms are perpendicular to each other. The positioning plate 2a is used to match the leaf spring seat of the front axle.

[0040] It should also be noted that the movable positioning plate 2a can better adapt to the steel leaf spring seat with a large flatness, making the front axle positioning stable and reliable.

[0041] Furthermore, the rotation directions of the positioning plates 2a of the two positioning mechanisms are perpendicular to each other, which fully satisfies the flatness requirements of the streamlined structure before near-net-shape forming of the full streamline.

[0042] For example, a hinge block 2c is provided on one side of the positioning plate 2a, and the positioning plate 2a is hinged to the corresponding mounting base 2b through the hinge block 2c. The other side of the positioning plate 2a is used to support the corresponding leaf spring seat.

[0043] It should also be noted that the positioning plate 2a is rotatably mounted on the corresponding mounting base 2b using the hinge block 2c, so that the positioning plate 2a can adaptively adjust the front axle leaf spring seat placed above it along its rotation angle, so that the leaf spring seat does not need to be processed again, thus avoiding damage to the streamlined structure of the front axle with near-net-shape.

[0044] Furthermore, the positioning plate 2a can also be movably mounted on the mounting base 2b in other ways, and can be adapted to adjust the leaf spring seat of the front axle.

[0045] For example, the mounting base 2b is also provided with a limiting device, which is used to limit the rotation angle of the positioning plate 2a.

[0046] It should also be noted that the limiting device limits the rotation angle of the positioning plate 2a to prevent the rotation angle of the positioning plate 2a from being too large.

[0047] For example, the limiting device extends above the positioning plate 2a, and the distance between the limiting device and the positioning plate 2a forms an adjustment area.

[0048] It should also be noted that the distance between the limiting device and the positioning plate 2a can be adjusted according to the product requirements.

[0049] To further illustrate, for example, the portion of the limiting device extending above the corresponding positioning plate 2a forms an adjusting limiting block 2d, which is used to limit the rotation angle of the corresponding positioning plate 2a. The distance between the positioning plate 2a and the corresponding adjusting limiting block 2d can be adjusted relative to each other according to the technical requirements of the product.

[0050] For example, the centering device includes two centering mechanisms 4, which are located on both sides of the two positioning mechanisms. The two centering mechanisms 4 are used to adjust the two ends of the front axle so that the front axle is in the correct position.

[0051] It should also be noted that the centering mechanism 4 is used to determine the position of the front axle, ensuring that the front axle is in the correct position in both the lateral and vertical directions when it is placed.

[0052] For example, the centering mechanism 4 is movably disposed on the mounting plate 1, and the centering mechanism 4 can be close to or away from the corresponding front axle end.

[0053] For example, the mounting plate 1 is also provided with a centering drive device 1b, which is located between the two positioning mechanisms. The centering drive device 1b is used to simultaneously drive the two centering mechanisms 4 to clamp or release.

[0054] It should also be noted that when the centering drive device 1b drives the two centering mechanisms 4, the force generated is not too large and will not affect the positioning of the front axle. It only adjusts the lateral and vertical positions of the front axle.

[0055] Furthermore, the centering drive unit 1b can provide power to the motor or the hydraulic press.

[0056] For example, the clamping device 3 includes a fixed end and a clamping end. The fixed end is mounted on the mounting plate 1, and the clamping end is movably disposed on the fixed end. The clamping end can be close to or away from the corresponding positioning plate 2a.

[0057] It should also be noted that the clamping end of the clamping device 3 applies pressure to the front axle from above, pressing the front axle onto the corresponding positioning mechanism to ensure that the front axle does not loosen during the clamping process.

[0058] For example, the clamping point of the clamping end and the front axle corresponds to the center of the corresponding hinge block, which is used to ensure that the front axle is subjected to balanced force during the clamping process;

[0059] Furthermore, the clamping part of the clamping device 3 corresponds to the center of the positioning mechanism, so that when the clamping device 3 clamps, its contact point with the front axle and the corresponding hinge block 2c correspond to each other in the vertical direction, ensuring that the front axle is subjected to balanced force during clamping and will not shift.

[0060] For example, the mounting plate 1 is also provided with a clamping drive device 1a, which is used to drive the clamping end of the clamping device 3 to clamp or release the front axle.

[0061] It should also be noted that the clamping drive device 1a can provide power to a motor or a hydraulic press.

[0062] For example, the present invention also provides a processing method for a front axle forging machine. The front axle is placed on the positioning plate 2a of the positioning mechanism, which supports the front axle, using the aforementioned front axle machining fixture. The leaf spring seats of the front axle correspond one-to-one with the positioning mechanism, so that the positioning mechanism adapts to the leaf spring seats of the front axle. Then, the two ends of the front axle are adjusted by the centering device to make the front axle in the correct position in the horizontal and vertical directions to complete the positioning. Then, the front axle is clamped by the clamping device 3, and then the kingpin hole is made on the front axle. This effectively avoids the problem of unstable positioning and large movement of the kingpin hole processing position caused by traditional fixtures during clamping.

[0063] For example, the flatness of the leaf spring seat can also be checked by determining whether the positioning plate 2a is in contact with the corresponding limiting device;

[0064] If the movable part does not contact the corresponding adjustment limit block 2d, then the flatness of the front axle leaf spring seat plane does not meet the technical requirements.

[0065] If the movable part does not come into contact with the corresponding adjusting limit block 2d, then the flatness of the leaf spring seat plane of the front axle meets the technical requirements.

[0066] In summary, the front axle forging machining fixture and method of the present invention utilizes the positioning mechanism to contact the leaf spring seat of the front axle, allowing the positioning mechanism to adaptively adjust to the flatness of the upper surface of the leaf spring seat. Then, a clamping device presses the front axle from above to achieve stable and reliable clamping, enabling subsequent machining without additional processing. This achieves a machining process without datum conversion, ensuring that the machining datum and inspection datum are consistent, avoiding damage to the streamlined structure of the near-net-shape front axle, and realizing the technological value of the near-net-shape front axle structure.

[0067] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A machining fixture for a front axle forging, used to clamp a front axle, the front axle comprising two leaf spring seats, characterized in that, include: The mounting plate has two positioning mechanisms arranged in the horizontal direction. Each positioning mechanism corresponds to a leaf spring seat and is used to adaptively support the corresponding leaf spring seat. A clamping device is provided on the mounting plate. The clamping end of the clamping device forms a front axle placement area with the corresponding positioning mechanism. The clamping device is used to clamp the front axle placed in the front axle placement area. The positioning mechanism includes a positioning plate and a mounting base. The positioning plate is hinged to the corresponding mounting base. The rotation directions of the positioning plates of the two positioning mechanisms are perpendicular to each other. The positioning plate is used to make adaptive adjustments with the leaf spring seat of the front axle. A hinge block is provided on one side of the positioning plate, and the positioning plate is hinged to the corresponding mounting seat through the hinge block. The other side of the positioning plate is used to support the corresponding leaf spring seat. The mounting base is also provided with a limiting device, which is used to limit the rotation angle of the positioning plate; the limiting device extends above the positioning plate, and the distance between the limiting device and the positioning plate forms an adjustment area; The clamping device includes a fixed end and a clamping end. The fixed end is mounted on the mounting plate, and the clamping end is movably disposed on the fixed end. The clamping end can move closer to or further away from the corresponding positioning plate. The clamping point of the clamping end and the front axle corresponds to the center of the corresponding hinge block, which is used to ensure that the front axle is subjected to balanced force during the clamping process; The mounting plate is also provided with a clamping drive device, which is used to drive the clamping end of the clamping device to clamp or release the front axle.

2. The machining fixture for a front axle forging according to claim 1, characterized in that: The mounting plate is also provided with a centering device, which includes two centering mechanisms. The two centering mechanisms are located on both sides of the two positioning mechanisms, and the two centering mechanisms are used to adjust the two ends of the front axle to position the front axle.

3. The machining fixture for a front axle forging according to claim 2, characterized in that: The centering mechanism is movably mounted on the mounting plate, and the centering mechanism can be close to or away from the corresponding front axle end.

4. A processing method, characterized in that: Using a front axle machining fixture as described in any one of claims 1-3, the front axle is placed on a positioning mechanism that supports the front axle. The leaf spring seats of the front axle correspond one-to-one with the positioning mechanism. The two ends of the front axle are adjusted using a centering device to ensure that the front axle is in the correct position in the lateral and vertical directions. The positioning mechanism will adapt to the changes in the leaf spring seats of the front axle and complete the positioning. Then, the front axle is clamped using a clamping device.

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