A positioning device for back milling of a forged wheel hub

Abstract

The utility model relates to aluminium alloy wheel hub processing technical field, and disclose a kind of back of forging wheel hub milling processing positioning device, it includes base, and the valve hole position of corresponding wheel hub to be processed is provided with locating seat on base, locating seat is opened with locating hole, locating hole is inserted with locating post, locating hole, locating post are coaxially arranged with valve hole, and locating post is inserted with valve hole, for the horizontal angle positioning of wheel hub to be processed.The utility model is positioned with locating seat and locating post set corresponding valve hole, with valve hole as the horizontal angle positioning reference of wheel hub to be processed, improve the positioning precision of wheel hub to be processed, avoid the positioning error big, stability insufficient, the problem of low repeat accuracy in traditional positioning mode dependence wheel hub window positioning and visual positioning, and further guarantee the milling precision of wheel hub back;While the utility model has certain universality, can satisfy the positioning use demand of different specifications wheel hub.

Description

Technical Field

[0001] This utility model relates to the field of aluminum alloy wheel hub processing technology, and in particular to a positioning device for milling the back of a forged wheel hub. Background Technology

[0002] As a key component for safe driving, the dimensional accuracy of aluminum alloy wheels directly affects driving safety and vehicle performance. With the increasing demand for lightweight vehicles, forged wheels have seen a significant increase in market demand due to their high strength and lightweight advantages. Simultaneously, consumers are demanding more diverse wheel designs, and the back designs of forged wheels (such as complex curved structures like counterweight grooves and weight-reducing recesses) are gradually approaching the complexity of cast wheels. However, due to current processing technology limitations, the complex structure of forged wheels cannot be directly forged and is typically finished using milling. During milling, a positioning device is needed to position the wheel. Current technology mainly relies on forging windows for horizontal angle positioning, but this has the following problems:

[0003] Machining burrs can cause burrs on the edges of the forging window, affecting positioning accuracy. Window positioning error: Machining tolerances in the forging window can lead to clamping deviations, thus affecting milling accuracy. Visual alignment deviation: Even with visual-assisted alignment, significant errors remain, making it difficult to meet high-precision machining requirements. Problems such as insufficient positioning stability and low repeatability lead to deviations during milling of the wheel hub's back side, impacting the finished product yield. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned problems by providing a positioning device for milling the back of a forged wheel hub, thereby improving clamping accuracy, reducing machining errors, and improving the milling quality of the complex curved surface on the back of the wheel hub.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A positioning device for milling the back of a forged wheel hub includes a base. A positioning seat is provided on the base corresponding to the valve hole position of the wheel hub to be processed. A positioning hole is provided on the positioning seat, and a positioning pin is inserted into the positioning hole. The positioning hole, the positioning pin and the valve hole are coaxially arranged, and the positioning pin is inserted into the valve hole for horizontal angular positioning of the wheel hub to be processed.

[0007] Preferably, the base is provided with a plurality of positioning blocks for axial positioning of the hub to be processed. The positioning blocks are spaced apart along the circumference of the hub. A pressure plate for pressing the hub is connected to the positioning block. The positioning block is provided with threaded holes. The pressing bolt passes through the pressing hole on the pressure plate and is screwed into the threaded hole.

[0008] Preferably, the positioning seat is tunably connected to the base, and a guide rail is provided on the base along the diameter direction of the hub to be processed. A guide groove is provided on the bottom of the positioning seat corresponding to the guide rail. The positioning seat is slidably connected to the guide rail through the guide groove. A set screw is screwed onto the positioning seat corresponding to the guide rail. The set screw can pass through the positioning seat and be pressed against the guide rail.

[0009] Preferably, a rotating block is hinged to the positioning seat, and the positioning hole is formed on the rotating block, so that the axial angle of the positioning hole is adjustable.

[0010] Preferably, the base is further provided with a center positioning structure for radial positioning of the wheel hub to be processed. The center positioning structure includes a positioning mandrel corresponding to the center hole of the wheel hub, and the positioning mandrel is inserted into the center hole of the wheel hub.

[0011] Preferably, the positioning mandrel has a frustum structure, and a guide shaft is provided on the base. The guide shaft passes through the positioning mandrel and is axially slidably connected to the positioning mandrel. A compression spring is sleeved on the guide shaft to elastically support the positioning mandrel on the upper end of the guide shaft.

[0012] The beneficial effects of this utility model are as follows: By using a positioning seat and positioning column corresponding to the valve hole, this utility model uses the valve hole as a horizontal angular positioning reference for the wheel hub to be processed, improving the positioning accuracy of the wheel hub and avoiding the problems of large positioning errors, insufficient stability, and low repeatability associated with traditional positioning methods that rely on wheel hub window positioning and visual positioning. This ensures the milling accuracy of the wheel hub's back side. The radial positioning structure ensures the radial positioning accuracy of the wheel hub to be processed, further guaranteeing the milling quality of the wheel hub. The adjustable positioning seat, the frustum-shaped positioning mandrel, and the elastic connection method give this utility model a certain degree of versatility, meeting the positioning needs of wheel hubs of different specifications, saving the cost of repetitive design and manufacturing of positioning devices, and reducing the difficulty of managing and storing tooling. Attached Figure Description

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a structural diagram of the present invention in use.

[0016] In the diagram: 10--Base; 11--Guide rail; 20--Positioning block; 21--Pressure plate; 22--Threaded hole; 23--Clamping bolt; 30--Wheel hub to be processed; 31--Valve hole; 32--Center hole; 40--Positioning seat; 41--Positioning hole; 42--Positioning pin; 43--Setting screw; 44--Rotating block; 51--Positioning mandrel; 52--Guide shaft; 53--Compression spring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] like Figure 1-2 As shown, a positioning device for milling the back of a forged wheel hub includes a base 10. A positioning seat 40 is provided on the base 10 corresponding to the valve hole 31 of the wheel hub 30 to be processed. The positioning seat 40 has a positioning hole 41, and a positioning pin 42 is inserted into the positioning hole 41. The positioning hole 41, positioning pin 42, and valve hole 31 are coaxially arranged, and the positioning pin 42 is inserted into the valve hole 31 for horizontal angular positioning of the wheel hub 30. A plurality of positioning blocks 20 are provided on the base 10 as axial positioning references for the wheel hub 30. The positioning blocks 20 are spaced apart along the circumference of the wheel hub for axial positioning. A pressure plate 21 for pressing the wheel hub is connected to the positioning blocks 20. Specifically, a threaded hole 22 is provided on the positioning block 20, and a clamping bolt 23 passes through the clamping hole on the pressure plate 21 and is screwed into the threaded hole 22.

[0019] In use, the wheel hub 30 to be processed is placed on the positioning block 20, and the wheel hub is rotated horizontally so that the valve hole 31 of the wheel hub is aligned with the positioning hole 41 on the positioning seat 40. Then, the positioning pin 42 is inserted into the valve hole 31 and the positioning hole 41, thus completing the horizontal angular positioning of the wheel hub 30 to be processed. At this time, the clamping bolt 23 is rotated to press the pressure plate 21 onto the outer rim of the wheel hub 30 to be processed, completing the positioning and clamping of the wheel hub, and the milling operation on the back of the forged wheel hub can then be performed.

[0020] This embodiment uses the positioning seat 40 and positioning post 42 corresponding to the valve hole 31 to use the valve hole 31 as the horizontal angle positioning reference of the wheel hub 30 to be processed, which improves the positioning accuracy of the wheel hub 30 to be processed and avoids the problems of large positioning error, insufficient stability and low repeatability that exist in the traditional positioning method that relies on wheel hub window positioning and visual positioning, thereby ensuring the milling accuracy of the back of the wheel hub.

[0021] In a preferred embodiment, the positioning seat 40 is adjustablely connected to the base 10 to meet the positioning requirements of different wheel types. Specifically, a guide rail 11 is provided on the base 10 along the diameter direction of the wheel hub 30 to be processed, and a guide groove is provided on the bottom of the positioning seat 40 corresponding to the guide rail 11. The positioning seat 40 is slidably connected to the guide rail 11 through the guide groove, thereby achieving positional adjustability of the positioning seat 40. A set screw 43 is screwed onto the positioning seat 40 corresponding to the guide rail 11. The set screw 43 can pass through the positioning seat 40 and abut against the guide rail 11, thereby locking the position of the positioning seat 40.

[0022] Preferably, the positioning seat 40 is hinged with a rotating block 44, and the positioning hole 41 is opened on the rotating block 44, so that the axial angle of the positioning hole 41 is adjustable and can be locked at a suitable angle to meet the wheel-shaped positioning requirements of valve holes 31 at different angles, thereby further improving applicability.

[0023] Preferably, the positioning block 20 is provided with a plurality of clamping holes spaced apart along the diameter of the wheel hub, which can meet the clamping requirements of wheel hubs of different sizes.

[0024] Preferably, the base 10 is further provided with a center positioning structure for radial positioning of the wheel hub 30 to be processed. The center positioning structure includes a positioning mandrel 51 corresponding to the center hole 32 of the wheel hub, and the positioning mandrel 51 is inserted into the center hole 32 of the wheel hub. In use, the positioning mandrel 51 is inserted into the center hole 32 of the wheel hub 30 to be processed, thereby realizing the radial positioning of the wheel hub.

[0025] Preferably, the positioning mandrel 51 has a frustum structure to position wheels with different center hole diameters 32. Specifically, a guide shaft 52 is provided on the base 10, which passes through the positioning mandrel 51 and is axially slidably connected to it. A compression spring 53 is sleeved on the guide shaft 52 to elastically support the positioning mandrel 51 at its upper end. In use, the center hole 32 of the wheel hub 30 to be processed is aligned with the positioning mandrel 51, so that the conical surface of the positioning mandrel 51 is locked onto the inner diameter of the center hole 32 of the wheel hub, thus providing radial positioning for the wheel hub 30. When the wheel hub 30 is pressed, it will push the positioning mandrel 51 to overcome the elastic force of the compression spring 53 and move it down a certain height along the guide shaft 52, maintaining elastic support for the center hole 32 of the wheel hub. When positioning different wheel types, the center holes 32 with different diameters and heights will be locked at different height positions on the positioning mandrel 51, achieving radial positioning for different wheel types.

[0026] The above-disclosed embodiments are merely specific examples of this utility model, but this utility model is not limited thereto. For those skilled in the art, any modifications made without departing from the principle of this utility model should be considered as protected by this utility model.

Claims

1. A positioning device for milling the back of a forged wheel hub, characterized in that: Includes a base (10), on which a positioning seat (40) is provided corresponding to the valve hole (31) of the wheel hub (30) to be processed. The positioning seat (40) has a positioning hole (41), and a positioning pin (42) is inserted into the positioning hole (41). The positioning hole (41), the positioning pin (42) and the valve hole (31) are coaxially arranged, and the positioning pin (42) is inserted into the valve hole (31) for horizontal angle positioning of the wheel hub (30) to be processed.

2. The positioning device for milling the back of a forged wheel hub according to claim 1, characterized in that: The base (10) is provided with a number of positioning blocks (20) for axial positioning of the hub (30) to be processed. The positioning blocks (20) are spaced apart along the circumference of the hub. The positioning blocks (20) are connected to a pressure plate (21) for pressing the hub. The positioning blocks (20) are provided with threaded holes (22). The pressing bolts (23) pass through the pressing holes on the pressure plate (21) and are screwed into the threaded holes (22).

3. The positioning device for milling the back of a forged wheel hub according to claim 1, characterized in that: The positioning seat (40) is tunably connected to the base (10). A guide rail (11) is provided on the base (10) along the diameter direction of the hub (30) to be processed. A guide groove is provided at the bottom of the positioning seat (40) corresponding to the guide rail (11). The positioning seat (40) is slidably connected to the guide rail (11) through the guide groove. A set screw (43) is screwed onto the positioning seat (40) corresponding to the guide rail (11). The set screw (43) can pass through the positioning seat (40) and press against the guide rail (11).

4. The positioning device for milling the back side of a forged wheel hub according to claim 1, characterized in that: A rotating block (44) is hinged to the positioning seat (40), and the positioning hole (41) is opened on the rotating block (44), so that the axial angle of the positioning hole (41) is adjustable.

5. The positioning device for milling the back side of a forged wheel hub according to claim 1, characterized in that: The base (10) is also provided with a center positioning structure for radial positioning of the hub (30) to be processed. The center positioning structure includes a positioning mandrel (51) corresponding to the hub center hole (32), and the positioning mandrel (51) is inserted into the hub center hole (32).

6. The positioning device for milling the back of a forged wheel hub according to claim 5, characterized in that: The positioning mandrel (51) has a frustum structure. A guide shaft (52) is provided on the base (10). The guide shaft (52) passes through the positioning mandrel (51) and is axially slidably connected to the positioning mandrel (51). A compression spring (53) is sleeved on the guide shaft (52) to elastically support the positioning mandrel (51) on the upper end of the guide shaft (52).

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