Aluminum alloy hub valve hole identifying and positioning structure

Abstract

The utility model discloses an aluminum alloy hub valve hole identifying and positioning structure which comprises a hub blank body, a position mark is arranged at the position, corresponding to a valve hole, of the hub blank body, and the position mark comprises a boss mark used for position identification when the hub blank body is turned. The boss identification is of a protruding structure protruding out of the surface of the hub blank body, and the hub blank further comprises a pit identification used for a machining center to recognize and position the hub blank body. According to the utility model, the boss identifier is used for identifying and positioning the turning of the hub, so that the traditional identification mode of an inward concave structure is replaced, the problem of low identification rate of visual detection is solved, the labor intensity of operators is reduced, and the production efficiency is ensured; by additionally arranging the pit mark for identifying and positioning of the machining center, the position of the valve hole of the hub blank body has a double identifying and positioning structure, respective independent identifying and positioning of turning machining and the machining center are achieved, and the identifying rate and accuracy are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum alloy wheel hub processing, in particular to an identification and positioning structure for the valve holes of aluminum alloy wheel hubs. Background Art

[0002] During the manufacturing process of aluminum alloy wheel hubs, the cast wheel hub blanks need to be machined through mechanical processing into finished wheel hubs with qualified dimensions and appearances. Mechanical processing usually includes processes such as turning on a lathe and drilling on a machining center. To facilitate the identification and positioning of the positions of the valve holes of the wheel hubs, an outward convex cone structure is usually made on the wheel hub casting mold corresponding to the positions of the valve holes. After the wheel hub is cast, the outward convex cone will form an inward concave structure at the position of the valve hole on the wheel hub blank, serving as the radial positioning reference for the turning processing of the wheel hub blank; after this inward concave structure is machined by turning, a circular concave pit is left on the wheel hub blank, serving as the radial reference for subsequent identification and positioning by the machining center.

[0003] However, during the actual product production process, when the valve position markings of the inward concave structure are identified and positioned during turning processing, computer vision detection identifies and positions based on the shadow area of the concave position of the blank. However, the shadow area formed by the valve hole position markings of the inward concave structure is affected by factors such as light and angle, and it is difficult to ensure clarity, resulting in a very low recognition rate of the valve hole position markings, usually only reaching 60 - 85%. In addition, during the mold design process, due to the influence of the angle of the rear arc surface of the mold bottom mold, the mold draft angle, and the actual machining profile, the circular concave pits actually remaining after the inward concave structure is machined by turning are often too small, making it difficult for the machining center to identify and resulting in inaccurate positioning. When the valve hole position markings cannot be recognized or are recognized inaccurately, it is necessary for the operators to repeatedly move the blanks onto the track for re - wheel identification, increasing the labor intensity of the operators and reducing the production efficiency.

[0004] Based on this, developing a new identification and positioning structure for the valve holes of aluminum alloy wheel hubs and applying it to actual production is an urgent problem to be solved currently. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an identification and positioning structure for the valve holes of aluminum alloy wheel hubs to solve the problems of low recognition rate of the valve hole position markings, high manual labor intensity, and affecting the production operation efficiency during the machining process of existing wheel hub blanks.

[0006] To solve the above - mentioned technical problems, the technical solution adopted by the utility model is as follows:

[0007] An identification and positioning structure for the valve hole of an aluminum alloy wheel hub, comprising a hub blank body, wherein a position mark is provided on the hub blank body corresponding to the position of the valve hole. The position mark includes a boss mark provided corresponding to the position of the valve hole. The boss mark is a raised structure protruding from the surface of the hub blank body and is used for position identification during the turning process of the hub blank body.

[0008] Preferably, the position mark further includes a pit mark for the machining center to identify and position the hub blank body. The pit mark is a recessed structure recessed from the surface of the hub blank body.

[0009] Preferably, the pit mark is in a pyramid shape to facilitate accurate identification and positioning by the machining center.

[0010] Preferably, the pit mark is in a quadrangular pyramid shape, and the bottom side length of the quadrangular pyramid shape is greater than 5 mm.

[0011] Preferably, the boss mark is arranged on the concentric circle at the position of the valve hole of the hub blank body and is spaced a certain distance from the valve hole position.

[0012] Preferably, the distance between the boss mark and the valve hole is 5 - 10 mm.

[0013] Preferably, the boss mark is arranged at the window position of the concentric circle at a certain angle relative to the pit mark, and the radial angle formed by the boss mark and the pit mark is 45° or 90° or 180°.

[0014] The beneficial effects of the present utility model are as follows:

[0015] The present utility model uses a boss mark protruding from the surface of the hub blank body for radial position identification of the hub blank body, which is convenient for rapid identification and positioning by computer vision detection. It replaces the traditional identification method using an inner concave structure as the valve hole positioning mark, overcomes the problem that visual detection uses the shadow area of the concave position for identification and positioning, is affected by light, angle, etc., and has a low recognition rate. It eliminates the heavy operation of the operator repeatedly transporting the blank to the track and reloading it for identification, reduces the labor intensity, and ensures the production efficiency. By adding a pit mark for the machining center to identify and position, the valve hole position of the hub blank body has a dual identification and positioning structure, realizing independent identification and positioning for turning and the machining center respectively, and further improving the recognition rate of the valve hole position during the machining process of the hub blank body. The recessed structure in a pyramid shape increases the effective recognition area of the machining center to a certain extent, making the remaining pit mark on the hub blank body after turning more obvious, facilitating accurate identification and positioning by the machining center, and improving the recognition rate and accuracy. Description of the Drawings

[0016] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] Figure 1 It is a three-dimensional structure schematic diagram of the present utility model.

[0018] Figure 2 is Figure 1 a partial enlarged structure schematic diagram at position A in

[0019] Figure 3 is Figure 1 a top view structure schematic diagram of

[0020] In the figure: 1 - hub blank body; 11 - window position; 2 - position identifier; 21 - boss identifier; 22 - pit identifier; 23 - pyramid shape. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0022] As Figures 1-3 shown, an aluminum alloy wheel valve hole identification and positioning structure includes a hub blank body 1. A position identifier 2 is provided on the hub blank body 1 corresponding to the valve hole position for radial position identification during the machining process of the hub blank body 1. The position identifier 2 includes a boss identifier 21 provided corresponding to the valve hole position. The boss identifier 21 is a protruding structure protruding from the surface of the hub blank body 1 for position identification during the turning process of the hub blank body 1. When the hub blank body 1 is transported by the conveying track to the turning process, the computer vision detects and identifies the boss identifier 21 on the hub blank body 1, and instructs the manipulator to transfer the hub blank body 1 to the processing machine tool at a specific radial position corresponding to the boss identifier 21, realizing the positioning and clamping of the hub blank body 1.

[0023] In this embodiment, the boss identifier 21 protruding from the surface of the hub blank body 1 is used for radial position identification of the hub blank body 1, which is convenient for computer vision detection to quickly identify and position, replacing the traditional identification method using an inner concave structure as the valve hole positioning identifier, overcoming the problem that the vision detection uses the shadow area of the concave position for identification and positioning, which is affected by light, angle, etc. and has a low recognition rate, eliminating the heavy operation of the operator repeatedly moving the blank to the track for re - wheel identification, reducing the labor intensity, and ensuring the production efficiency.

[0024] In a further embodiment, the position mark 2 also includes a pit mark 22 for the machining center to identify and locate the wheel hub blank body 1. The pit mark is a concave structure recessed in the surface of the wheel hub blank body 1. After the wheel hub blank body 1 is turned, the concave structure will leave a pit on the wheel hub blank body 1 as the pit mark 22 for the machining center to identify and locate. The pit mark 22 is directly opposite to the valve hole position of the wheel hub blank body 1. After the drilling process of the machining center, the pit mark 22 will be removed to form the valve hole of the wheel hub blank body. In this embodiment, by adding the pit mark 22 for the machining center to identify and locate, the valve hole position of the wheel hub blank body 1 has a dual identification and positioning structure, realizing the independent identification and positioning of the turning process and the machining center, and further improving the recognition rate of the valve hole position during the mechanical processing of the wheel hub blank body 1.

[0025] Preferably, if Figure 2 As shown, the pit mark 22 is a pyramid shape 23, so that the pit mark 22 remaining on the hub blank body 1 after turning is more obvious than the traditional frustum shape, which is convenient for the machining center to accurately identify and position.

[0026] More preferably, the pit mark 22 is in the shape of a tetrahedron 23, and the length of the base of the tetrahedron 23 is greater than 5 mm. On the premise of ensuring that the tetrahedron 23 is within the turning range, the effective recognition area of the machining center is maximized, thereby improving the recognition rate and accuracy.

[0027] Preferably, the boss mark 21 is arranged on a concentric circle of the valve hole position of the hub blank body 1, and is spaced a certain distance from the valve hole position to avoid interfering with the machining center's accurate identification of the pit mark 22. More preferably, the distance between the boss mark 21 and the valve hole is 5-10 mm, and the distance between the boss mark 21 and the pit mark 22 is increased to avoid interference as much as possible while ensuring that the window position 11 of the hub blank body 1 can accommodate the boss mark 21 and the pit mark 22.

[0028] Preferably, if Figure 3 As shown, the boss mark 21 can also be set at the window position 11 of the concentric circle at a certain angle relative to the pit mark 22, so as to facilitate the identification and positioning of the boss mark 21 and the pit mark 22 during the machining process. More preferably, the radial angle formed by the boss mark 21 and the pit mark 22 is 45°, 90° or 180°, so as to prevent mutual interference between the two during identification and positioning.

[0029] The above disclosure is only a specific embodiment of the present invention, but the present invention is not limited thereto. For ordinary technicians in this field, without departing from the principle of the present invention, any deformation made should be regarded as belonging to the protection of the present invention.

Claims

1. An identification and positioning structure for the valve hole of an aluminum alloy wheel hub, characterized in that: It includes a hub blank body (1), and a position mark (2) is provided at a position corresponding to the valve hole on the hub blank body (1). The position mark (2) includes a boss mark (21) provided at a position corresponding to the valve hole. The boss mark (21) is a convex structure protruding from the surface of the hub blank body (1) and is used for position identification during the turning process of the hub blank body (1).

2. The identification and positioning structure of the valve hole of an aluminum alloy wheel hub according to claim 1, characterized in that: The position mark (2) further includes a pit mark (22) for the machining center to identify and position the hub blank body (1). The pit mark (22) is a concave structure recessed in the surface of the hub blank body (1).

3. The identification and positioning structure of the valve hole of an aluminum alloy wheel hub according to claim 2, characterized in that: The pit mark (22) is in a pyramid shape (23) to facilitate accurate identification and positioning by the machining center.

4. A valve hole identification and positioning structure for an aluminum alloy wheel hub according to claim 3, characterized in that: The pit mark (22) is in a quadrangular pyramid shape (23), and the bottom side length of the quadrangular pyramid shape (23) is greater than 5 mm.

5. The identification and positioning structure of the valve hole of an aluminum alloy wheel hub according to claim 2, characterized in that: The boss mark (21) is provided on a concentric circle at the valve hole position of the hub blank body (1) and is spaced a certain distance from the valve hole position.

6. The identification and positioning structure of the valve hole of an aluminum alloy wheel hub according to claim 5, characterized in that: The distance between the boss mark (21) and the valve hole is 5 - 10 mm.

7. The identification and positioning structure of the valve hole of an aluminum alloy wheel hub according to claim 5, characterized in that: The boss mark (21) is provided at a window position (11) of a concentric circle at a certain angle relative to the pit mark (22). The radial angle formed by the boss mark (21) and the pit mark (22) is 45° or 90° or 180°.

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