Wheel hub machining fixture

Abstract

The utility model discloses a hub machining clamp, include: base, connecting shaft, horizontal support disc, at least three sliding blocks and be used for driving several pulleys around support disc axis dispersion or gather the drive mechanism, each sliding block all is equipped with clamp unit, and the first strip through groove that is crossed is provided on the support disc to the corresponding clamp unit passes, and the clamp unit includes the vertical clamping arm of fixed connection with the sliding block and the downward pressure mechanism of sliding through the support disc upwards, and the downward pressure mechanism includes the angle adjustable and can hold on the pressure block of wheel rim convex peak, after placing hub on the support disc, several clamping arms gather and hold the wheel rim convex peak, then the downward pressure mechanism starts, drives the pressure block to hold on the wheel rim convex peak, and clamping arm and pressure block can all be with normal force and act on the wheel rim convex peak, and the force and limit from different directions are applied to the wheel rim convex peak, can fixedly hold the hub, can also avoid producing the indentation.

Description

Technical Field

[0001] This utility model relates to the technical field of wheel hub processing, specifically to a wheel hub processing fixture. Background Technology

[0002] Wheel hub fixtures play a crucial role in wheel hub machining, serving as core equipment to ensure efficient, safe, and precise processing. Wheel hub machining involves multiple complex processes, each requiring the wheel hub to be fixed in the correct position and orientation with extremely high precision. The fixture, through precisely designed positioning elements, establishes a stable and unique machining reference coordinate system for the wheel hub. This ensures that the relative positional accuracy between all machined features (holes, end faces, outer diameters, etc.) meets stringent design requirements.

[0003] Chinese patent application CN202323612486.8, entitled "Wheel Hub Processing Fixture," discloses a wheel hub processing fixture. By using a tension spring to pull a T-shaped slider within a T-shaped groove, it can move curved clamping plates at different positions around the main shaft to any location outside, achieving clamping and fixing of wheel hubs of different sizes, thus increasing the usability of the fixture. However, this patent has the following shortcomings: clamping the wheel hub using spring tension results in poor clamping stability, and the wheel hub is prone to shifting during processing. If a common drive push rod is used to drive the curved clamping plates to hold the wheel hub, the plates only clamp the wheel rim protrusion from the outside, requiring a large clamping force; otherwise, the wheel hub will wobble. Excessive clamping force can also damage the wheel rim protrusion, causing indentations. Therefore, a wheel hub processing fixture needs to be designed. Utility Model Content

[0004] To address the aforementioned technical problems, the purpose of this utility model is to overcome the issue of indentation caused by multiple clamps holding the wheel rim protrusion from the outside in the existing technology.

[0005] To achieve the above objectives, this utility model provides a wheel hub processing fixture, comprising: a base, a vertical connecting shaft fixedly connected to the base, a horizontal support plate fixedly connected to the top of the connecting shaft along the same axis, at least three sliders evenly distributed around the circumference of the support plate and slidably connected to the lower surface of the support plate, and a driving mechanism for driving several pulleys to disperse or converge around the axis of the support plate, wherein each slider is equipped with a fixture unit.

[0006] The support plate has a first strip-shaped through slot through which the corresponding clamping unit passes. The clamping unit includes a vertical clamping arm that is fixedly connected to the slider and slides upward through the support plate, and a pressing mechanism mounted on the slider. The pressing mechanism includes a pressing block that is adjustable in angle and can press against the rim protrusion.

[0007] Preferably, the pressing mechanism further includes a mounting bracket fixedly connected to the slider, at least one guide seat fixedly connected to the mounting bracket, a connecting arm with its upper end hinged to the end of the pressure block away from the connecting shaft axis, an angle adjustment mechanism mounted on the connecting arm and connected to the pressure block, and a first drive push rod mounted on the mounting bracket with its output end hinged to the lower end of the connecting arm.

[0008] The guide seat is provided with a slide rail, which includes a vertical first slide rail and a second slide rail connected to the upper end of the first slide rail. The upper end of the second slide rail is inclined away from the axis of the support plate. The connecting arm is equipped with a first pulley and a second pulley located above the first pulley. Both the first pulley and the second pulley are slidably inserted into the slide rail.

[0009] Preferably, an extension arm is fixedly connected to the end of the pressure block away from the axis of the support plate, and the middle part of the extension arm is hinged to the upper end of the connecting arm. The angle adjustment mechanism includes a vertical threaded rod fixedly mounted on the connecting arm by a mounting seat, an adjustment arm hinged to the end of the extension arm away from the pressure block, and a pair of nuts located above and below the adjustment arm and threadedly sleeved on the threaded rod. A second strip-shaped through groove sleeved on the threaded rod is provided through the adjustment arm.

[0010] Preferably, the drive mechanism includes a turntable coaxially mounted on a connecting shaft via a bearing and a horizontal second drive push rod mounted on a support plate via a hinged seat, with its output end hinged to the turntable. Each mounting bracket has a horizontal connecting rod hinged to it, and the end of the connecting rod away from the mounting bracket is hinged to the mounting bracket.

[0011] Preferably, the base is fitted with a cylindrical outer shell.

[0012] Preferably, the lower surface of the support plate is equipped with a plurality of strip slides arranged in the same length direction as the corresponding first strip through groove, and the slider is slidably assembled on the corresponding strip slide.

[0013] Preferably, both the upper and lower surfaces of the adjusting arm are provided with anti-slip textures.

[0014] According to the above technical solution, the wheel hub processing fixture provided by this utility model has the following beneficial effects in use:

[0015] Firstly, after the wheel hub is placed on the support plate, several clamping arms converge to hold the wheel rim protrusion. Then, the pressing mechanism is activated, which drives the pressure block to press on the wheel rim protrusion. Both the clamping arms and the pressure block can act on the wheel rim protrusion with normal force, applying force and limiting the wheel rim protrusion from different directions. This can both fix and hold the wheel hub and avoid indentation.

[0016] Secondly, because different models of wheel hubs have different shapes, the rim peaks on the wheel hubs have different shapes. The tilt angle of the pressure block can be adjusted to adapt to different rim peaks, making it highly practical.

[0017] Other features and advantages of this utility model will be described in detail in the following detailed description section; and all parts not covered in this utility model are the same as or can be implemented using existing technology. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a three-dimensional structural diagram of a wheel hub machining fixture provided in this utility model;

[0020] Figure 2 This is a partial three-dimensional structural diagram of a wheel hub machining fixture provided in this utility model. Figure 1 ;

[0021] Figure 3 This is a three-dimensional structural diagram of a fixture unit for a wheel hub machining fixture provided in this utility model;

[0022] Figure 4 This is a partial three-dimensional structural diagram of a wheel hub machining fixture provided in this utility model. Figure 2 ;

[0023] Figure 5 This utility model provides a wheel hub machining fixture. Figure 3 Enlarged diagram of point A in the middle.

[0024] Explanation of reference numerals in the attached figures

[0025] 1. Base; 2. Connecting shaft; 3. Support plate; 4. Slider; 5. Clamping arm; 6. Pressure block; 7. Mounting bracket; 8. Guide seat; 9. Connecting arm; 10. First drive push rod; 11. First slide rail; 12. Second slide rail; 13. First pulley; 14. Second pulley; 15. Extension arm; 16. Threaded rod; 17. Adjusting arm; 18. Nut; 19. Second strip-shaped through groove; 20. Turntable; 21. Second drive push rod; 22. Connecting rod; 23. Cylindrical outer shell; 24. Strip-shaped slide block. Detailed Implementation

[0026] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0027] In this utility model, unless otherwise stated, directional words such as "upper," "lower," "inner," and "outer" included in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as limitations on the term.

[0028] like Figure 1-5 As shown, a wheel hub processing fixture includes: a base 1, a vertical connecting shaft 2 fixedly connected to the base 1, a horizontal support plate 3 fixedly connected to the top of the connecting shaft 2 along the same axis, at least three sliders 4 evenly distributed around the circumference of the support plate 3 and slidably connected to the lower surface of the support plate 3, and a driving mechanism for driving several pulleys to disperse or converge around the axis of the support plate 3, wherein each slider 4 is equipped with a fixture unit.

[0029] The support plate 3 has a first strip-shaped through slot through which the corresponding clamping unit passes. The clamping unit includes a vertical clamping arm 5 that is fixedly connected to the slider 4 and slides upward through the support plate 3, and a pressing mechanism mounted on the slider 4. The pressing mechanism includes a pressing block 6 that is angle-adjustable and can press against the rim protrusion.

[0030] In the above technical solution, after the wheel hub is placed on the support plate 3, the drive mechanism drives several sliders 4 to gather together, and drives several clamping arms 5 to gather together and hold it, so that the wheel hub and the support plate 3 are set on the same axis. Then the pressing mechanism is started, and the pressing block 6 presses on the wheel rim protrusion, so that the wheel hub cannot move upward. At this time, the wheel hub is clamped, so as to facilitate the processing of the wheel hub. Alternatively, the base 1 can be assembled on the rotating plate 20 for use.

[0031] Both the clamping arm 5 and the pressure block 6 can apply normal force to the wheel rim protrusion, applying force and limiting the wheel rim protrusion from different directions, which can not only fix and hold the wheel hub, but also avoid indentation.

[0032] Because different models of wheel hubs have different shapes, the shape of the rim peaks on the wheel hubs is also different. The tilt angle of the adjustable pressure block 6 can be adjusted to fit different rim peaks, making it highly practical.

[0033] In a preferred embodiment of the present invention, the pressing mechanism further includes a mounting bracket 7 fixedly connected to the slider 4, at least one guide seat 8 fixedly connected to the mounting bracket 7, a connecting arm 9 with its upper end hinged to the end of the pressure block 6 away from the axis of the connecting shaft 2, an angle adjustment mechanism mounted on the connecting arm 9 and connected to the pressure block 6, and a first drive push rod 10 mounted on the mounting bracket 7 with its output end hinged to the lower end of the connecting arm 9.

[0034] The guide seat 8 is provided with a slide rail, which includes a vertical first slide rail 11 and a second slide rail 12 connected to the upper end of the first slide rail 11. The upper end of the second slide rail 12 is inclined away from the axis of the support plate 3. The connecting arm 9 is equipped with a first pulley 13 and a second pulley 14 located above the first pulley 13. Both the first pulley 13 and the second pulley 14 are slidably inserted into the slide rail.

[0035] In the above technical solution, when it is necessary to loosen the rim peak, the output end of the first drive push rod 10 moves upward, driving the connecting arm 9 to move upward. The first pulley 13 and the second pulley 14 slide upward in the slide rail. At this time, the pressure block 6 is released from the rim peak. The first drive push rod 10 pushes the connecting arm 9 to continue moving upward. The second pulley 14 will slide from the first slide rail 11 into the second slide rail 12. At this time, the pressure block 6 will move away from the axis of the support plate 3 while moving upward, so that the pressure block 6 is misaligned with the rim peak. When the wheel hub is lifted upward, the rim peak will not touch the pressure block 6.

[0036] When the clamping arm 5 holds the wheel hub and needs to press the wheel rim protrusion, the first drive push rod 10 drives the connecting arm 9 to move downward. The first pulley 13 slides downward in the first slide rail 11, and the second pulley 14 slides downward in the second slide rail 12 until the second pulley 14 slides into the first slide groove. At this time, the connecting arm 9 is in a vertical state. The first drive push rod 10 continues to drive the connecting arm 9 to move downward, and the pressing block 6 moves downward and presses on the wheel rim protrusion.

[0037] After the first pulley 13 and the second pulley 14 both slide into the first slide rail 11, they will continue to slide downwards to press against the rim protrusions, and can also press against rim protrusions of different thicknesses.

[0038] In a preferred embodiment of this utility model, an extension arm 15 is fixedly connected to the end of the pressure block 6 away from the axis of the support plate 3. The middle part of the extension arm 15 is hinged to the upper end of the connecting arm 9. The angle adjustment mechanism includes a vertical threaded rod 16 fixedly mounted on the connecting arm 9 by a mounting seat, an adjustment arm 17 hinged to the end of the extension arm 15 away from the pressure block 6, and a pair of nuts 18 located above and below the adjustment arm 17 and threadedly sleeved on the threaded rod 16. A second strip-shaped through groove 19 sleeved on the threaded rod 16 is provided through the adjustment arm 17.

[0039] In the above technical solution, when it is necessary to adjust the tilt angle of the pressure block 6, loosen a pair of nuts 18 so that the adjusting arm 17 can move up and down on the threaded rod 16. The up and down movement of the adjusting arm 17 will drive the extension arm 15 to rotate around the connection with the connecting arm 9, thereby driving the pressure block 6 to rotate and adjust the tilt angle. Then tighten a pair of nuts 18 to tightly clamp the adjusting arm 17 and fix the tilt angle of the pressure block 6.

[0040] In a preferred embodiment of the present invention, the driving mechanism includes a turntable 20 coaxially mounted on a connecting shaft 2 via a bearing and a horizontal second driving push rod 21 mounted on a support plate 3 via a hinge seat and with its output end hinged to the turntable 20. Each mounting bracket 7 is hinged with a horizontal connecting rod 22, the end of which is away from the mounting bracket 7 and is hinged to the mounting.

[0041] In the above technical solution, the second drive push rod 21 drives the turntable 20 to rotate, and through a number of connecting rods 22 drives a number of sliders 4 to slide, and the number of sliders 4 drives the clamping unit to gather or disperse.

[0042] In a preferred embodiment of the present invention, a cylindrical outer shell 23 is mounted on the base 1.

[0043] In a preferred embodiment of the present invention, the lower surface of the support plate 3 is equipped with a plurality of strip slides 24 arranged in the same length direction as the corresponding first strip through groove, and the slider 4 is slidably assembled on the corresponding strip slides 24.

[0044] In a preferred embodiment of this utility model, both the upper and lower surfaces of the adjusting arm 17 are provided with anti-slip textures.

[0045] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0046] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0047] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A wheel hub machining fixture, characterized in that, include: The base (1), the vertical connecting shaft (2) fixedly connected to the base (1), the horizontal support plate (3) fixedly connected to the top of the connecting shaft (2) along the same axis, at least three sliders (4) evenly distributed around the circumference of the support plate (3) and slidably connected to the lower surface of the support plate (3), and a drive mechanism for driving several pulleys to disperse or converge around the axis of the support plate (3), each slider (4) is equipped with a clamping unit; The support plate (3) has a first strip-shaped through slot through which the corresponding clamping unit passes. The clamping unit includes a vertical clamping arm (5) that is fixedly connected to the slider (4) and slides upward through the support plate (3) and a pressing mechanism mounted on the slider (4). The pressing mechanism includes a pressing block (6) that is angle adjustable and can press against the rim protrusion.

2. The wheel hub machining fixture according to claim 1, characterized in that, The pressing mechanism also includes a mounting bracket (7) fixedly connected to the slider (4), at least one guide seat (8) fixedly connected to the mounting bracket (7), a connecting arm (9) with its upper end hinged to the end of the pressure block (6) away from the axis of the connecting shaft (2), an angle adjustment mechanism mounted on the connecting arm (9) and connected to the pressure block (6), and a first drive push rod (10) mounted on the mounting bracket (7) with its output end hinged to the lower end of the connecting arm (9). The guide seat (8) is provided with a slide rail, which includes a vertical first slide rail (11) and a second slide rail (12) connected to the upper end of the first slide rail (11). The upper end of the second slide rail (12) is inclined away from the axis of the support plate (3). The connecting arm (9) is equipped with a first pulley (13) and a second pulley (14) located above the first pulley (13). The first pulley (13) and the second pulley (14) are both slidably inserted into the slide rail.

3. A wheel hub machining fixture according to claim 2, characterized in that, An extension arm (15) is fixedly connected to the end of the pressure block (6) away from the axis of the support plate (3). The middle part of the extension arm (15) is hinged to the upper end of the connecting arm (9). The angle adjustment mechanism includes a vertical threaded rod (16) fixedly mounted on the connecting arm (9) by a mounting seat, an adjustment arm (17) hinged to the end of the extension arm (15) away from the pressure block (6), and a pair of nuts (18) located above and below the adjustment arm (17) and threadedly sleeved on the threaded rod (16). A second strip groove (19) sleeved on the threaded rod (16) is provided through the adjustment arm (17).

4. A wheel hub machining fixture according to claim 2, characterized in that, The drive mechanism includes a turntable (20) coaxially mounted on a connecting shaft (2) via a bearing and a horizontal second drive push rod (21) mounted on a support plate (3) via a hinge seat and with its output end hinged to the turntable (20). Each mounting bracket (7) has a horizontal connecting rod (22) hinged to it, with the end of the connecting rod (22) away from the mounting bracket (7) hinged to the mounting.

5. A wheel hub machining fixture according to claim 1, characterized in that, The base (1) is fitted with a cylindrical outer shell (23).

6. A wheel hub machining fixture according to claim 1, characterized in that, The lower surface of the support plate (3) is equipped with a number of strip slides (24) arranged in the same length direction as the corresponding first strip through groove, and the slider (4) is slidably assembled on the corresponding strip slide (24).

7. A wheel hub machining fixture according to claim 3, characterized in that, The upper and lower surfaces of the adjusting arm (17) are provided with anti-slip textures.

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