A floating centering vertical flipping fixture for wheel hub axles

Abstract

This utility model relates to a floating centering vertical flipping fixture for wheel hub shafts, comprising a connecting bridge plate, an elastic positioning element, a support structure, and a clamping structure. The upper surface of the connecting bridge plate has several assembly holes. The elastic positioning element is detachably fixed inside the assembly holes for insertion of the wheel hub shaft. The support structure is fixedly connected to the upper surface of the connecting bridge plate near the assembly holes to support the wheel hub shaft. The clamping structure is located on the upper surface of the connecting bridge plate near the outer side of the support structure to clamp the wheel hub shaft. This utility model can simultaneously cover the processes of rough turning the rod section, rough turning the disc section, drilling the center hole, fixing the length, and drilling the center hole of the drill rod section, eliminating the need for multiple clamping fixtures. Multiple processes can be completed in a single clamping, effectively improving work efficiency and avoiding the increased errors caused by repeated clamping in traditional methods.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts processing fixtures, specifically a floating centering vertical flipping fixture for wheel hub shafts. Background Technology

[0002] The current traditional process for machining wheel hub shafts has significant technical bottlenecks: the process requires going through stages such as rough turning of the rod part (establishing the initial datum), rough turning of the disc part and drilling of the center hole (secondary datum reconstruction), fixed length short and drilling of the center hole of the rod part (third datum machining), and then semi-finish turning, finish turning and deep hole machining of the drill rod part are required.

[0003] The entire process has three major flaws: First, the reference between processes is forced to be converted three times, resulting in cumulative errors. Second, the clamping is usually done with a three-jaw chuck and ejector pin structure. The tooling fixture has a single function, lacks flexibility, and requires repeated positioning for each process, resulting in more than three clamping times. This makes the operation complicated and inefficient. Third, multiple clamping significantly increases the probability of radial runout of the workpiece exceeding tolerance, which prolongs the processing cycle and directly affects the critical dimension control accuracy in the finishing stage, resulting in a consistently low product qualification rate. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a floating centering vertical flipping clamp for wheel hub shafts, which solves the problem of traditional clamps having limited functionality and requiring repeated clamping and positioning.

[0005] This utility model discloses a floating centering vertical flipping fixture for a wheel hub shaft, comprising a connecting bridge plate, an elastic positioning element, a support structure, and a clamping structure. The upper surface of the connecting bridge plate has several assembly holes. The elastic positioning element is detachably fixed inside the assembly holes for inserting the wheel hub shaft. The support structure is fixedly connected to the upper surface of the connecting bridge plate and located near the assembly holes to support the wheel hub shaft. The clamping structure is located on the upper surface of the connecting bridge plate and located near the outer side of the support structure to clamp the wheel hub shaft.

[0006] As a further improvement of this utility model, the elastic positioning component includes a support plate, a return spring and a positioning sleeve. A support groove is provided in the center of the upper surface of the support plate, and a through hole is provided in the middle of the support groove, penetrating the lower surface of the support plate. The support plate is fixedly connected to the lower surface of the connecting bridge plate by a first bolt at the position corresponding to the center of the assembly hole.

[0007] As a further improvement of this utility model, one end of the reset spring is placed inside the support groove, and the other end of the reset spring is located inside the assembly hole.

[0008] As a further improvement of this utility model, the positioning sleeve is movably inserted into the interior of the assembly hole, and the lower surface of the positioning sleeve is in contact with the upper surface of the return spring.

[0009] As a further improvement of this utility model, the positioning sleeve has a central insertion hole, which is a conical hole with a diameter that gradually decreases from top to bottom.

[0010] As a further improvement of this utility model, a limiting plate is provided on the upper surface of the connecting bridge plate and near the edge of the assembly hole, and a second bolt is installed between the limiting plate and the connecting bridge plate.

[0011] As a further improvement of this utility model, the support structure includes eight support pins, which are distributed in a ring at equal intervals with the center of the assembly hole as the origin.

[0012] As a further improvement of this utility model, there are two clamping structures, which are symmetrically arranged with the center of the assembly hole as the origin.

[0013] As a further improvement of this utility model, the clamping structure includes a positioning nut, a screw, a clamping nut, and a pressure plate. The positioning nut is fixedly connected to the upper surface of the connecting bridge plate, one end of the screw is threadedly connected to the inside of the positioning nut, and the other end of the screw is threadedly connected to the clamping nut.

[0014] As a further improvement of this utility model, a waist-shaped hole is provided in the middle of the upper surface of the pressure plate, the screw passes through the waist-shaped hole, and the clamping nut is located above the pressure plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model, through the conical insertion hole structure set inside the positioning sleeve, combined with the dynamic compensation system of the reset spring, enables the surface of the wheel hub shaft to fit against the inner wall of the positioning sleeve and automatically achieve floating centering after being inserted into the positioning sleeve, without the need for repeated adjustments. Through the support pins set in a ring around the assembly hole, combined with the action of the pressure plate and the locking nut, the wheel hub shaft disc between the pressure plate and the support pin can be tightly clamped, avoiding the problem of unilateral extrusion deformation of traditional three-jaw chucks.

[0017] 2. This utility model can simultaneously cover the processes of rough turning the rod section, rough turning the disc section, drilling the center hole, fixing the length, and drilling the center hole of the rod section. It eliminates the need for multiple clamping fixtures, allowing multiple processes to be completed in a single clamping, effectively improving work efficiency and avoiding the increased errors caused by repeated clamping in traditional methods. Furthermore, it is compatible with other processing tasks, such as drilling the center holes of the disc section and rod section, countersinking the center hole of the countersink section, milling the bottom plane of the disc section, milling the end face of the rod section (fixing the length), and milling the outer circle of the rod section to leave a reference for subsequent processing, thus improving the practicality of the device. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall front sectional structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall garment structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the overall front sectional structure of the present invention when clamping the wheel hub shaft;

[0022] Figure 4 This is a top view of the overall structure of the present invention when clamping the wheel hub shaft;

[0023] Figure 5 This is a three-dimensional structural diagram of the support structure of this utility model.

[0024] In the diagram: 1. Connecting bridge plate; 2. Assembly hole; 3. Support plate; 301. Support groove; 302. Through hole; 303. First bolt; 4. Return spring; 5. Positioning sleeve; 6. Limiting plate; 601. Second bolt; 7. Support nail; 8. Positioning nut; 9. Screw; 10. Clamping nut; 11. Pressure plate; 12. Waist-shaped hole. Detailed Implementation

[0025] The following illustrations will reveal several embodiments of the present invention. For clarity, many physical details will be described in the following description. However, it should be understood that these physical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these physical details are not essential. Furthermore, for the sake of simplicity, some conventional structures and components will be shown in a simple schematic manner in the illustrations.

[0026] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of this technology, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "install," "connect," and "link" 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 technology based on the specific circumstances.

[0028] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0029] Please see Figure 1-5 This utility model discloses a floating centering vertical flipping fixture for a wheel hub shaft, comprising a connecting bridge plate 1, an elastic positioning element, a support structure, and a clamping structure. The upper surface of the connecting bridge plate 1 is provided with several assembly holes 2. The elastic positioning element is detachably fixed inside the assembly holes 2 for inserting the wheel hub shaft. The support structure is fixedly connected to the upper surface of the connecting bridge plate 1 and located near the assembly holes 2 to support the wheel hub shaft. The clamping structure is located on the upper surface of the connecting bridge plate 1 and located near the outer side of the support structure to clamp the wheel hub shaft.

[0030] In this embodiment, the elastic positioning component includes a support plate 3, a return spring 4, and a positioning sleeve 5. A support groove 301 is provided in the center of the upper surface of the support plate 3, and a through hole 302 is provided in the middle of the support groove 301, penetrating the lower surface of the support plate 3. The support plate 3 is fixedly connected to the lower surface of the connecting bridge plate 1 by a first bolt 303 at the position corresponding to the center of the assembly hole 2. One end of the return spring 4 is placed inside the support groove 301, and the other end of the return spring 4 is located inside the assembly hole 2. The positioning sleeve 5 is movably inserted into the assembly hole 2, and the lower surface of the positioning sleeve 5 is in contact with the upper surface of the return spring 4.

[0031] The connection between the support plate 3, the return spring 4, and the positioning sleeve 5, which is in contact but not fixed, allows workers to easily replace parts, adjust the tightness of the return spring 4 during clamping, and simplify the manufacturing of the tooling.

[0032] like Figure 3As shown, in some other embodiments, the positioning sleeve 5 has a central insertion hole, which is a conical hole with a diameter that gradually decreases from top to bottom.

[0033] With the above technical solution, when the hub axle is inserted into the center hole of the positioning sleeve 5, the surface of the hub axle will gradually fit against the inner wall of the positioning sleeve 5. When the surface of the hub axle is completely fitted against the positioning sleeve 5, it will drive the positioning sleeve 5 to move downward. At this time, the return spring 4 is compressed and contracted until the disc of the hub axle fits against the upper surface of the support structure.

[0034] Please see Figure 1 In some other embodiments, a limiting plate 6 is provided on the upper surface of the connecting bridge plate 1 and near the edge of the assembly hole 2, and a second bolt 601 is installed between the limiting plate 6 and the connecting bridge plate 1.

[0035] It should be noted that the limiting plate 6 is located above the positioning sleeve 5. When the return spring 4 is in the initial state, the lower surface of the limiting plate 6 is in contact with the upper surface of the positioning sleeve 5 to prevent the positioning sleeve 5 and the return spring 4 from falling out of the assembly hole 2. When it is necessary to replace the positioning sleeve 5 and the return spring 4, it is only necessary to unscrew the second bolt 601 and take out the limiting plate 6, which is very convenient.

[0036] In this embodiment, the support structure includes eight support pins 7, which are distributed in a ring at equal intervals with the center of the assembly hole 2 as the origin. The arrangement of the eight support pins 7 can support the disc of the wheel hub shaft from multiple directions, thereby improving the stability of the wheel hub shaft during the machining process.

[0037] In this embodiment, there are two clamping structures, which are symmetrically arranged with the center of the assembly hole 2 as the origin. The clamping structure includes a positioning nut 8, a screw 9, a clamping nut 10, and a pressure plate 11. The positioning nut 8 is fixedly connected to the upper surface of the connecting bridge plate 1. One end of the screw 9 is threaded to the inside of the positioning nut 8, and the other end of the screw 9 is threaded to the clamping nut 10. A waist-shaped hole 12 is opened in the middle of the upper surface of the pressure plate 11. The screw 9 passes through the waist-shaped hole 12, and the clamping nut 10 is located above the pressure plate 11.

[0038] The pressure plate 11 is flexibly designed so that its height and position relative to the wheel hub axle are adjustable, making it suitable for use with wheel hub axles of different sizes and highly adaptable.

[0039] When using this device to position and clamp the wheel hub axle, simply insert the bottom end of the wheel hub axle into the positioning sleeve 5 until the lower surface of the wheel hub axle disc is in contact with the upper surface of the support pin 7. Then place the pressure plate 11 on the upper surface of the wheel hub axle disc and tighten the clamping nut 10 until the wheel hub axle cannot move.

[0040] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A wheel hub shaft floating centering vertical flip clamp, characterized in that, include: A connecting bridge plate (1) is provided with a plurality of assembly holes (2) on its upper surface. An elastic positioning element is detachably fixed inside the assembly hole (2) for the hub shaft to be inserted; The support structure is fixedly connected to the upper surface of the connecting bridge plate (1) and is located near the assembly hole (2) to support the hub shaft; A clamping structure is provided on the upper surface of the connecting bridge plate (1) and near the outer side of the support structure to clamp the hub shaft.

2. A wheel hub shaft floating centering vertical flip clamp according to claim 1, characterized in that, The elastic positioning component includes a support plate (3), a return spring (4), and a positioning sleeve (5). A support groove (301) is provided in the center of the upper surface of the support plate (3). A through hole (302) is provided in the middle of the support groove (301) and penetrates the lower surface of the support plate (3). The support plate (3) is fixedly connected to the lower surface of the connecting bridge plate (1) by a first bolt (303) at the position corresponding to the center of the assembly hole (2).

3. A wheel hub shaft floating centering vertical flip clamp according to claim 2, characterized in that, One end of the reset spring (4) is placed inside the support groove (301), and the other end of the reset spring (4) is located inside the assembly hole (2).

4. A wheel hub shaft floating centering vertical flip clamp according to claim 3, characterized in that, The positioning sleeve (5) is movably inserted into the interior of the assembly hole (2), and the lower surface of the positioning sleeve (5) is in contact with the upper surface of the return spring (4).

5. A wheel hub shaft floating centering vertical flip jig according to claim 4, characterized in that, The positioning sleeve (5) has a central insertion hole, which is a conical hole with a diameter that gradually decreases from top to bottom.

6. A wheel hub shaft floating centering vertical flip clamp according to claim 4, characterized in that, A limiting plate (6) is provided on the upper surface of the connecting bridge plate (1) and near the edge of the assembly hole (2). A second bolt (601) is installed between the limiting plate (6) and the connecting bridge plate (1).

7. A wheel hub shaft floating centering vertical flip clamp according to claim 1, characterized in that, The support structure includes eight support pins (7), which are distributed in a ring at equal intervals with the center of the assembly hole (2) as the origin.

8. A floating centering vertical flipping fixture for a wheel hub shaft according to claim 1, characterized in that, There are two clamping structures, which are symmetrically arranged with the center of the assembly hole (2) as the origin.

9. A wheel hub shaft floating centering vertical flip jig according to claim 8, characterized in that, The clamping structure includes a positioning nut (8), a screw (9), a clamping nut (10), and a pressure plate (11). The positioning nut (8) is fixedly connected to the upper surface of the connecting bridge plate (1). One end of the screw (9) is threadedly connected to the inside of the positioning nut (8), and the other end of the screw (9) is threadedly connected to the clamping nut (10).

10. A wheel hub shaft floating centering vertical flip jig according to claim 9, characterized in that, The upper surface of the pressure plate (11) has a waist-shaped hole (12) in the middle, the screw (9) passes through the waist-shaped hole (12), and the clamping nut (10) is located above the pressure plate (11).

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