Floating positioning fixture for front axle forgings

Abstract

The present invention provides a floating positioning fixture for front axle forgings, comprising a base and a first floating clamping unit and a second floating clamping unit arranged on the base, wherein the first floating clamping unit and the second floating clamping unit are arranged at intervals along the length direction of the front axle forging. The beneficial effect of the present invention is that the first positioning plate and the second positioning plate are contacted with the two leaf spring seats of the front axle, so that when the two ends of the workpiece are respectively placed on the first positioning plate and the second positioning plate, the front axle can make the first positioning plate and the second positioning plate float with the front axle according to its own weight, and the first positioning plate and the second positioning plate will adapt to the flatness of the upper surface of the front axle leaf spring seat, and then use the first clamping mechanism and the second clamping mechanism to clamp, thereby ensuring stable contact and clamping between the front axle and the fixture, and solving the problem that the existing clamp cannot stably and reliably clamp the front axle with a larger surface flatness of the leaf spring seat.

Description

Technical Field

[0001] The invention relates to the technical field of front axle forging clamping, in particular to a floating positioning fixture for front axle forgings. Background Art

[0002] Currently, to meet product technical and processing requirements, the traditional first step in forging the upper surface of the front axle leaf spring seat is milling the upper surface of the leaf spring seat. After the upper surface of the leaf spring seat is machined, the kingpin hole is subsequently positioned and machined using two planes or three fixed supports plus one floating support. Due to the good flatness of the upper surface of the leaf spring seat, this positioning method can meet the front axle processing requirements. However, the processing process requires at least one datum conversion, and its processing datum is inconsistent with the inspection datum, resulting in low processing efficiency and large fluctuations in processing quality.

[0003] With advancements in forging technology, the upper surface of the leaf spring seat can now meet the product's technical requirements for flatness of both a single plane and two planes (when considered as a single plane) through forging alone. This eliminates the need for machining the upper surface of the leaf spring seat. However, the kingpin hole still needs to be machined using the upper surface as a positioning reference. If the existing positioning method is used for the streamlined, near-net-shape front axle streamline structure, the larger flatness of the upper surface of the front axle leaf spring seat will lead to unstable positioning during front axle machining, resulting in significant movement of the kingpin hole during machining. Consequently, existing fixtures are unable to stably clamp the front axle with the relatively large flatness of the upper surface of the leaf spring seat. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a floating positioning fixture for front axle forgings, which is used to solve the technical problem in the prior art that the existing fixture cannot process the front axle with a large surface flatness of the leaf spring seat.

[0005] To achieve the above-mentioned and other related purposes, the present invention provides a floating positioning fixture for a front axle forging, which is used to clamp the front axle, wherein the front axle includes two leaf spring seats, including:

[0006] A base, wherein the base is provided with a first floating clamping unit and a second floating clamping unit for positioning and clamping the front axle forging, wherein the first floating clamping unit and the second floating clamping unit are arranged at intervals along the length direction of the front axle forging;

[0007] The first floating clamping unit includes a mounting seat, a first floating component, a first positioning plate, and a first pressing mechanism. The mounting seat has an upper surface formed with a first mounting groove, the bottom of which is spherical. The first floating component is disposed in the first mounting groove and cooperates with the spherical surface of the first mounting groove. The first positioning plate is disposed on the first floating component and is located above the mounting seat. A first floating gap is defined between the first positioning plate and the upper surface of the mounting seat. The pressing mechanism is used to press the front axle forging against the first positioning plate.

[0008] The second floating clamping unit includes an articulated seat, a second positioning plate and a second pressing mechanism. The second positioning plate is rotatably mounted on the articulated seat via a rotating shaft. The second pressing mechanism is used to press the front axle forging onto the second positioning plate.

[0009] Optionally, the first positioning plate and the second positioning plate are used to contact the two leaf spring seats of the front axle, so that when the two ends of the workpiece are placed on the first positioning plate and the second positioning plate respectively, the front axle can make the first positioning plate and the second positioning plate float with the front axle according to its own weight. The first positioning plate and the second positioning plate will adapt to the flatness of the upper surface of the front axle leaf spring seat, and then use the first clamping mechanism and the second clamping mechanism to clamp, ensuring stable contact and clamping between the front axle and the clamp, which solves the problem that the existing clamp cannot stably and reliably clamp the front axle with a larger flatness of the upper surface of the leaf spring seat.

[0010] Optionally, the mounting seat is provided with a first limiting structure for limiting the vertical floating range of the first positioning plate, and the hinge seat is provided with a second limiting structure for limiting the vertical floating range of the second positioning plate.

[0011] Optionally, the first limiting structure includes a plurality of baffles, which are mounted on the mounting seat through brackets and are positioned above the first positioning plate, and the first positioning plate extends into a gap between the baffles and the upper surface of the mounting seat;

[0012] The second limiting structure includes a plurality of blocks, which are installed on the base or the hinge seat. The blocks are blocked above the second positioning plate, and the edges of the second positioning plate extend into the gaps between the blocks and the corresponding upper surfaces of the hinge seat.

[0013] Optionally, the baffles are two oppositely arranged and located on opposite sides of the corresponding first positioning plates. When the front axle forging is clamped, the two baffles are located on both sides of the front axle forging in the width direction.

[0014] There are two stoppers arranged opposite to each other and located on opposite sides of the corresponding floating surfaces of the second positioning plates, and limit the floating direction of the second positioning plates when clamping the front axle forging.

[0015] Optionally, the first clamping mechanism includes a clamping seat, a second floating component and a clamping component, the lower end surface of the clamping seat is provided with a second mounting groove, and the bottom of the second mounting groove is a spherical surface, the second floating component extends into the second mounting groove and cooperates with the spherical surface of the second mounting groove, and the clamping component is connected to the lower end of the second floating component.

[0016] Optionally, a third limiting structure for limiting the floating range of the second floating component is provided on the pressing seat, there is a movable gap between the third limiting structure and the second floating component, and the third limiting structure limits the second floating component from separating from the pressing seat.

[0017] Optionally, the third limiting structure includes a cover plate arranged relative to the periphery of the second mounting groove, a second floating gap is provided between the cover plate and the lower end surface of the clamping seat, a through hole is provided in the middle of the cover plate, and a connecting rod for connecting the clamping component is provided at the lower end of the second floating component, the connecting rod extends downward from the through hole of the cover plate, and a third floating gap is provided between the connecting rod and the through hole.

[0018] Optionally, a hinge block is provided at the lower portion of the second positioning plate, and the hinge block is rotatably connected to the hinge seat via the rotating shaft. The axis of the rotating shaft is located in a horizontal plane, and the axis of the rotating shaft is horizontally arranged.

[0019] Optionally, the floating positioning fixture further includes a centering device, which includes two clamping mechanisms and a third driving device, and the third driving device is used to drive the two clamping mechanisms to adjust the position of the front axle.

[0020] Optionally, the first pressing mechanism includes a first driving device, and the first driving device is used to drive the pressing seat to move closer to or away from the corresponding leaf spring seat;

[0021] The second pressing mechanism includes a second driving device and a pressing plate, and the second driving device is used to drive the pressing plate to approach or move away from the corresponding leaf spring seat.

[0022] As described above, the use of the floating positioning fixture for front axle forgings of the present invention has the following beneficial effects: the first positioning plate and the second positioning plate are used to contact the two leaf spring seats of the front axle, so that when the two ends of the workpiece are placed on the first positioning plate and the second positioning plate respectively, the front axle can make the first positioning plate and the second positioning plate float with the front axle according to its own weight. The first positioning plate and the second positioning plate will adapt to the flatness of the upper surface of the front axle leaf spring seat, and then use the first clamping mechanism and the second clamping mechanism to clamp, ensuring stable contact and clamping between the front axle and the fixture, which solves the problem that the existing fixture cannot stably and reliably clamp the front axle with a larger surface flatness of the leaf spring seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Shown is a schematic structural diagram of an embodiment of the present invention;

[0024] Figure 2 Shown is a schematic structural diagram of an embodiment of the present invention;

[0025] Figure 3 Shown is a schematic structural diagram of a first viewing angle of a clamping state in one embodiment of the present invention;

[0026] Figure 4 Shown is a schematic structural diagram of a first viewing angle of a clamping state in one embodiment of the present invention;

[0027] Figure 5 Shown is a schematic cross-sectional structural diagram of a first floating clamping unit in one embodiment of the present invention;

[0028] Figure 6 Shown is a schematic cross-sectional structural diagram of a second floating clamping unit in one embodiment of the present invention;

[0029] Figure 7 Shown is a schematic diagram of the connection relationship between the second floating component and the connecting plate in one embodiment of the present invention;

[0030] Figure 8 Shown is a schematic structural diagram of a cover plate in one embodiment of the present invention.

[0031] Part Number Description

[0032] 1 base

[0033] 2 articulated seats

[0034] 2a hinge block

[0035] 3 Second positioning plate

[0036] 4 Mounting Blocks

[0037] 5First positioning plate

[0038] 6First floating component

[0039] 7a The first limiting structure

[0040] 7b Second limiting structure

[0041] 8First drive device

[0042] 9 Clamping mechanism

[0043] 10 Second drive device

[0044] 10a pressure plate

[0045] 11 Pressing seat

[0046] 12 second floating component

[0047] 14 cover

[0048] 15 connecting rod

[0049] 16 connecting plates

[0050] 17 pressure rod

[0051] 18 Third drive device

[0052] 19 tie rod DETAILED DESCRIPTION

[0053] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different viewpoints and applications without departing from the spirit of the present invention.

[0054] See also Figures 1 to 8 It should be noted that the diagrams provided in this embodiment are only schematic illustrations of the basic concept of the present invention. Therefore, the diagrams only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. The type, quantity and proportion of each component in actual implementation can be changed at will, and the component layout type may also be more complex. The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read. They are not used to limit the limiting conditions for the implementation of the present invention and therefore have no technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be considered as the scope of the implementation of the present invention without substantially changing the technical content.

[0055] like Figures 1 to 2 As shown, the present invention provides a floating positioning fixture for a front axle forging, which is used to clamp the front axle, wherein the front axle includes two leaf spring seats. The floating positioning fixture includes a base 1, on which are provided a first floating clamping unit and a second floating clamping unit for positioning and clamping the front axle forging. The first floating clamping unit and the second floating clamping unit are arranged at intervals along the length direction of the front axle forging;

[0056] The first floating clamping unit includes a mounting seat 4, a first floating component, a first positioning plate 5, and a first pressing mechanism. The mounting seat 4 has a first mounting groove on its upper surface, and the bottom of the first mounting groove is spherical. The first floating component 6 is disposed in the first mounting groove and cooperates with the spherical surface of the first mounting groove. The first positioning plate 5 is disposed on the first floating component 6 and is located above the mounting seat 4. A first floating gap is defined between the first positioning plate 5 and the upper surface of the mounting seat 4. The pressing mechanism is used to press the front axle forging against the first positioning plate 5.

[0057] The second floating clamping unit includes an articulated seat 2, a second positioning plate 3 and a second clamping mechanism. The second positioning plate 3 is rotatably mounted on the articulated seat 2 via a rotating shaft. The second clamping mechanism is used to press the front axle forging onto the second positioning plate 3.

[0058] It should also be noted that the first positioning plate 5 and the second positioning plate 3 are in contact with the two leaf spring seats of the front axle, so that when the two ends of the workpiece are placed on the first positioning plate 5 and the second positioning plate 3 respectively, the front axle can make the first positioning plate 5 and the second positioning plate 3 float with the front axle according to its own weight. The first positioning plate 5 and the second positioning plate 3 will adapt to the flatness of the upper surface of the front axle leaf spring seat, and then use the first clamping mechanism and the second clamping mechanism to clamp, ensuring stable contact and clamping between the front axle and the clamp, which solves the problem that the existing clamp cannot stably and reliably clamp the front axle with a larger surface flatness of the leaf spring seat.

[0059] In one embodiment, two second floating clamping units may be provided on the base 1 to clamp the front axle, and the floating directions of the two second floating clamping units are perpendicular to each other.

[0060] Exemplarily, a first limiting structure 7a for limiting the vertical floating range of the first positioning plate 5 is provided on the mounting seat 4, and a second limiting structure 7b for limiting the vertical floating range of the second positioning plate 3 is provided on the articulated seat 2. When the front axle is placed on the first positioning plate 5 and the second positioning plate 3, due to the deadweight of the front axle, the first positioning plate 5 and the second positioning plate 3 will float with the front axle. For this purpose, the first limiting structure 7a and the second limiting structure 7b are set to limit the first positioning plate 5 and the second positioning plate 3 respectively.

[0061] It should also be noted that there is a first adjustment gap between the first limiting structure 7 a and the first positioning plate 5 , and there is a second adjustment gap between the second limiting structure 7 b and the second positioning plate 3 .

[0062] The floating range of the first positioning plate 5 is located within the first adjustment gap, and the floating range of the second positioning plate 3 is located within the second adjustment gap.

[0063] In one embodiment, the first limiting structure 7a includes a plurality of baffles, which are mounted on the mounting base 4 through brackets and block the first positioning plate 5. The first positioning plate 5 extends into the gap between the baffle and the upper surface of the mounting base 4.

[0064] The second limiting structure includes multiple blocks, which are installed on the base 1 or the hinge seat 2. The blocks are blocked above the second positioning plate 3, and the edges of the second positioning plate 3 extend into the gap between the blocks and the corresponding upper surfaces of the hinge seat 2.

[0065] Optionally, two baffles are arranged opposite to each other and are located on opposite sides of the corresponding first positioning plate 5. When the front axle forging is clamped, the two baffles are located on both sides of the width direction of the front axle forging to complete the floating limit of the front axle;

[0066] It is further explained that there are two stoppers arranged opposite to each other and located on opposite sides of the floating surface of the corresponding second positioning plate 3. When clamping the front axle forging, the floating direction of the second positioning plate is limited. Since the second positioning plate 3 is hingedly set on the corresponding hinge seat 2, the rotation direction of the second positioning plate 3 is located in a plane. The stoppers only need to be set on the corresponding two sides of the second positioning plate 3 to complete the limitation of the second positioning plate 3.

[0067] It should also be noted that the above-mentioned first adjustment gap is formed between the baffle and the corresponding first positioning plate 5 , and the above-mentioned second adjustment gap is formed between the stopper and the corresponding second positioning plate 3 .

[0068] Exemplarily, a workpiece placement area is formed between the two baffles, the baffles are in the shape of long strips, and the baffles are arranged along the edges of the first positioning plates 5 , and the baffles are located above the corresponding edges of the first positioning plates 5 .

[0069] It should also be noted that since the function of the baffle is to limit the floating of the first positioning plate 5, and the floating direction of the first positioning plate 5 floats according to the spherical fit between the first positioning plate 5 and the first mounting groove, for this reason, the baffle can set multiple angles around the center of the first floating component 6 to limit the floating of the first positioning plate 5. When the first positioning plate 5 of the leaf spring seat floats, no matter in which direction the first positioning plate 5 floats, the baffle will limit the first positioning plate 5. Without affecting the placement of the front axle, the more the floating direction of the first positioning plate 5 is limited, the better the effect.

[0070] In one embodiment, the first clamping mechanism includes a clamping seat 11, a second floating component 12 and a clamping component. The lower end surface of the clamping seat 11 is provided with a second mounting groove, and the bottom of the second mounting groove is a spherical surface. The second floating component 12 extends into the second mounting groove and cooperates with the spherical surface of the second mounting groove. The clamping component is connected to the lower end of the second floating component 12, so that the clamping component can float by utilizing the second floating component 12 and the spherical surface of the second mounting groove during the process of clamping the leaf spring seat, thereby ensuring better contact between the clamping component and the corresponding leaf spring seat.

[0071] It should also be noted that when the pressing component contacts the leaf spring seat of the front axle, the second floating component 12 floats at a certain angle, thereby improving the contact stability between the pressing component and the corresponding leaf spring seat.

[0072] Exemplarily, a third limiting structure for limiting the floating range of the second floating component 12 is provided on the pressing seat 11 . There is a movable gap between the third limiting structure and the second floating component, and the third limiting structure limits the second floating component 12 from detaching from the pressing seat 11 .

[0073] It should also be noted that the third limiting structure has two purposes: it is used to limit the rotation angle of the second floating component 12, and the baffle prevents the second floating component 12 from falling off.

[0074] like Figure 7 As shown, it should also be noted that the third limiting structure includes a cover plate 14 arranged relative to the outer periphery of the second mounting groove, and a second floating gap is provided between the cover plate 14 and the lower end surface of the clamping seat. The second floating component 12 is adjusted within the second floating gap according to the unevenness of the clamping surface of the clamped workpiece to ensure that the second floating component 12 has a sufficient rotation angle and does not affect the clamping of the workpiece. A through hole is provided in the middle of the cover plate 14, and a connecting rod 15 for connecting the clamping component is provided at the lower end of the second floating component 12. The connecting rod 15 extends downward from the through hole of the cover plate 14, and a third floating gap is provided between the connecting rod 15 and the through hole. When the connecting rod 15 rotates with the second floating component 12, the third floating gap provides a range of motion for the connecting rod 15.

[0075] It should also be noted that the centers of the first floating component 6 and the second floating component 12 are arranged relatively vertically to ensure that the front axle is subjected to balanced force during the clamping process, so that when the clamping component applies a clamping force to the front axle forging, the first positioning plate 5 can effectively support the front axle forging, ensuring that in the clamping direction, the supporting force and the clamping force can be in the same direction.

[0076] For example, a hinge block 2a is provided at the lower part of the second positioning plate 3, and the hinge block 2a is rotatably connected to the hinge seat 2 through a rotating shaft. The axis of the rotating shaft is located in a horizontal plane, and the axis of the rotating shaft is along the length direction of the front axle forging, or the axis of the rotating shaft is along the width direction of the front axle forging, or the axis of the rotating shaft is inclined relative to the length direction of the front axle forging.

[0077] The floating positioning fixture further includes a centering device, which includes two clamping mechanisms 9 and a third driving device 18. The third driving device 18 is used to drive the two clamping mechanisms 9 to adjust the axial position of the front axle.

[0078] To further illustrate, in one embodiment, the clamping mechanism 9 has a positioning groove, and the positioning groove is used to abut against the corresponding front axle end.

[0079] It should also be noted that the positioning groove is a V-shaped groove, which is convenient for guiding the front axle end when it is close to the corresponding front axle end, so that the positioning groove can adjust the lateral position of the front axle when it is close to the front axle end.

[0080] Exemplarily, the third drive device 18 is installed in the middle of the base 1. The third drive device 18 is a hydraulic press or a cylinder. The third drive device 18 is connected to the two clamping mechanisms 9 through a pull rod 19. The clamping mechanisms 9 are hinged on the base 1. The third drive device 18 drives the pull rod 19 to drive the two clamping mechanisms 9 to rotate. When the output end of the third drive device 18 is extended, the positioning groove of the clamping mechanism 9 is close to the corresponding front axle end, and the axial and lateral positions of the front axle are adjusted. When the output end of the third drive device 18 is retracted, the positioning groove of the clamping mechanism 9 is away from the corresponding front axle end.

[0081] Exemplarily, the first pressing mechanism includes a first driving device 8, which is used to drive the pressing seat 11 to move closer to or away from the corresponding leaf spring seat;

[0082] The second pressing mechanism includes a second driving device 10 and a pressing plate 10a. The second driving device 10 is used to drive the pressing plate 10a to move closer to or away from the corresponding leaf spring seat.

[0083] It is further explained that the centers of the pressure plate 10a and the hinge block 2a are arranged relative to each other in the upper and lower directions, so as to ensure that the front axle is subjected to balanced force during the clamping process, so that while the pressure plate 10a applies a clamping force to the front axle forging, the second positioning plate 3 can effectively support the front axle forging, ensuring that the supporting force and the clamping force in the clamping direction can be in the same direction, thereby avoiding shear damage to the front axle.

[0084] like Figures 3 to 6Figure 2 is a schematic diagram of the working state of the floating positioning fixture for the front axle forging when clamping the front axle. The clamping component includes a connecting plate 16 and multiple pressure rods 17. All pressure rods 17 are arranged on the end surface of the connecting plate 16 facing away from the cover plate 14. Since the cross-section of the leaf spring seat is I-shaped, the pressure rods 17 can be used to press the lower part of the leaf spring seat to improve the clamping effect.

[0085] It should also be noted that the pressure rods 17 are respectively located on both sides of the corresponding leaf spring seat in the width direction to further ensure the clamping effect of the front axle. At the same time, all the pressure rods 17 located on both sides of the leaf spring seat are symmetrically arranged with the axis of the second floating component 12 as the center.

[0086] like Figure 8 As shown, it is further explained that the through hole opened in the middle of the cover plate 14 is a square hole, the axial cross-section of the connecting rod 15 is square, and the above-mentioned third floating gap is formed between the connecting rod 15 and the corresponding through hole. The angle of the connecting rod 15 can be adjusted in the through hole. The connecting rod 15 will be restricted by the square through hole when rotating, which limits the rotation of the connecting rod 15 and ensures that the pressing rod 17 will not rotate during the clamping process, thereby ensuring that the clamping position is correct.

[0087] It should also be noted that when using this floating positioning fixture to process the front axle, in order to ensure product quality, the front axle product should be tested using the same positioning method, and only qualified products can be processed.

[0088] In summary, a floating positioning fixture for front axle forgings of the present invention is adopted, and the first positioning plate 5 and the second positioning plate 3 are used to contact the two leaf spring seats of the front axle, so that when the two ends of the workpiece are placed on the first positioning plate 5 and the second positioning plate 3 respectively, the front axle can make the first positioning plate 5 and the second positioning plate 3 float with the front axle according to its own weight. The first positioning plate 5 and the second positioning plate 3 will adapt to the flatness of the upper surface of the front axle leaf spring seat, and use the centering device to adjust the lateral position and axial position of the front axle so that the front axle is in the correct position, and then use the first clamping mechanism and the second clamping mechanism to clamp it to ensure stable contact and clamping between the front axle and the fixture.

[0089] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may 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 one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A floating positioning fixture for front axle forgings, characterized in that: include: A base, wherein the base is provided with a first floating clamping unit and a second floating clamping unit for positioning and clamping the front axle forging, wherein the first floating clamping unit and the second floating clamping unit are arranged at intervals along the length direction of the front axle forging; The first floating clamping unit includes a mounting seat, a first floating component, a first positioning plate, and a first pressing mechanism. The mounting seat has an upper surface formed with a first mounting groove, the bottom of which is spherical. The first floating component is disposed in the first mounting groove and cooperates with the spherical surface of the first mounting groove. The first positioning plate is disposed on the first floating component and is located above the mounting seat. A first floating gap is defined between the first positioning plate and the upper surface of the mounting seat. The pressing mechanism is used to press the front axle forging against the first positioning plate. The second floating clamping unit includes an articulated seat, a second positioning plate, and a second pressing mechanism. The second positioning plate is rotatably mounted on the articulated seat via a rotating shaft. The second pressing mechanism includes a pressing plate. The second pressing mechanism is used to press the front axle forging onto the second positioning plate. The mounting seat is provided with a first limiting structure for limiting the vertical floating range of the first positioning plate, and the hinge seat is provided with a second limiting structure for limiting the vertical floating range of the second positioning plate; The first pressing mechanism includes a pressing seat, a second floating component and a pressing component. The lower end surface of the pressing seat is provided with a second mounting groove, and the bottom of the second mounting groove is a spherical surface. The second floating component extends into the second mounting groove and cooperates with the spherical surface of the second mounting groove. The pressing component is connected to the lower end of the second floating component. The pressing seat is provided with a third limiting structure for limiting the floating range of the second floating component. There is a movable gap between the third limiting structure and the second floating component. The centers of the first floating component and the second floating component are arranged vertically opposite to each other; A hinge block is provided at the lower part of the second positioning plate, and the hinge block is rotatably connected to the hinge seat through the rotating shaft. The centers of the pressure plate and the hinge block are arranged relatively to each other up and down, the axis of the rotating shaft is located in the horizontal plane, and the axis of the rotating shaft is arranged horizontally.

2. The floating positioning fixture for a front axle forging according to claim 1, characterized in that: The first limiting structure includes a plurality of baffles, which are mounted on the mounting seat through brackets and are positioned above the first positioning plate. The first positioning plate extends into a gap between the baffles and the upper surface of the mounting seat. The second limiting structure includes a plurality of blocks, which are installed on the base or the hinge seat. The blocks are blocked above the second positioning plate, and the edges of the second positioning plate extend into the gaps between the blocks and the corresponding upper surfaces of the hinge seat.

3. The floating positioning fixture for a front axle forging according to claim 2, characterized in that: The baffles are two oppositely arranged and located on opposite sides of the corresponding first positioning plates. When the front axle forging is clamped, the two baffles are located on both sides of the width direction of the front axle forging; There are two stoppers arranged opposite to each other and located on opposite sides of the corresponding floating surfaces of the second positioning plates, and limit the floating direction of the second positioning plates when clamping the front axle forging.

4. The floating positioning fixture for a front axle forging according to claim 3, characterized in that: Furthermore, the third limiting structure limits the second floating component from separating from the pressing seat.

5. The floating positioning fixture for a front axle forging according to claim 4, characterized in that: The third limiting structure includes a cover plate arranged relative to the periphery of the second mounting groove, a second floating gap is provided between the cover plate and the lower end surface of the clamping seat, a through hole is provided in the middle of the cover plate, and a connecting rod for connecting the clamping component is provided at the lower end of the second floating component, the connecting rod extends downward from the through hole to the cover plate, and a third floating gap is provided between the connecting rod and the through hole.

6. The floating positioning fixture for a front axle forging according to claim 5, characterized in that: The floating positioning fixture further comprises a centering device, which comprises two clamping mechanisms and a third driving device, and the third driving device is used to drive the two clamping mechanisms to adjust the position of the front axle.

7. The floating positioning fixture for a front axle forging according to claim 6, characterized in that: The first pressing mechanism includes a first driving device, which is used to drive the pressing seat to move closer to or away from the corresponding leaf spring seat; The second pressing mechanism further includes a second driving device, which is used to drive the pressing plate to move closer to or away from the corresponding leaf spring seat.

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