Hub blank morphology detection device and detection method thereof

Abstract

The hub blank shape detection device is characterized by comprising a main roller way, an inlet roller way, an outlet roller way and a detection system, the inlet roller way and the outlet roller way are arranged on one side of the main roller way, and the detection system is arranged between the inlet roller way and the outlet roller way. The transplanting system is used for sequentially transplanting the hub blanks to the detection system and the outlet roller way from the inlet roller way according to the detection sequence; the detection system comprises a detection system rack, a bottom rotating platform mounted at the bottom of the detection system rack through a connecting frame I, a connecting frame II mounted at the top of the detection system rack through a lifting mechanism, and a top rotating platform mounted at the lower end of the connecting frame II; the shape detection assemblies are distributed and mounted on the bottom rotating platform and the top rotating platform; according to the method, the size variation and deformation characteristics of the blank can be accurately obtained, source data support is provided for blank deformation condition analysis, blank clamping and customized machining through the obtained morphology characteristics, and hub deformation control and small-allowance machining are effectively assisted.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile engineering, and in particular to a wheel hub blank profile detection device and a detection method thereof. Background Art

[0002] Wheels are key components in automotive chassis assemblies, and the quality of wheel blanks directly impacts the quality and yield of the final product. Currently, wheel blanks after die-casting are in an uncontrolled state. This means that the quality of the blanks after die-casting and heat treatment is not effectively monitored, and the dimensional variation and deformation characteristics of the blanks cannot be accurately determined. As a result, blanks with significant morphological deterioration are transferred to the machining process, causing a sharp increase in the scrap rate in this process. Furthermore, analysis of blank deformation cannot provide data support for optimizing mold design, die-casting processes, heat treatment processes, and customized clamping and machining. To ensure a stable yield rate, wheel manufacturers typically need to increase the processing allowance of their products, which in turn results in a significant waste of raw metal materials. Summary of the Invention

[0003] In response to the above problems, the invention proposes a wheel hub blank shape detection device and detection method, and the technical solutions adopted are as follows: A wheel hub blank profile detection device, characterized by comprising a main roller conveyor, an entrance roller conveyor and an exit roller conveyor arranged on one side of the main roller conveyor, a detection system arranged between the entrance roller conveyor and the exit roller conveyor, and a transfer system arranged on the other side of the entrance roller conveyor and the exit roller conveyor for transferring the wheel hub blank from the entrance roller conveyor to the detection system and the exit roller conveyor in sequence according to the inspection order; The detection system includes a detection system frame, a bottom rotating platform installed at the bottom of the detection system frame through a connecting frame 1, a connecting frame 2 installed at the top of the detection system frame through a lifting mechanism, a top rotating platform installed at the lower end of the connecting frame 2, and shape detection components distributedly installed on the bottom rotating platform and the top rotating platform.

[0004] Furthermore, the morphology detection component includes line laser profiler 1, line laser profiler 2, and line laser profiler 5, which are respectively installed on the bottom rotating platform through translation module 1, translation module 2, and lifting module 2, and line laser profiler 3 and line laser profiler 4 are respectively installed on the top rotating platform through translation module 3 and lifting module 1.

[0005] Furthermore, the line laser profiler 1, line laser profiler 2, line laser profiler 3, line laser profiler 4 and line laser profiler 5 are respectively installed with the translation module 1, translation module 2, translation module 3, lifting module 1 and lifting module 2 through rotatable adjustment components.

[0006] Furthermore, the transplanting system includes a transplanting system frame, a transplanting system translation module horizontally installed on the transplanting system frame, a transplanting system lifting module slidably installed on the transplanting system translation module, a centering mechanism fixedly connected to the transplanting system lifting module through a centering mechanism connecting frame, and a group of clamps installed on the centering mechanism to move toward or oppositely.

[0007] Furthermore, the clamping head of the clamping jaw is made of polyurethane block material.

[0008] A method for detecting the shape of a wheel hub blank is characterized by comprising the following modes: (1) All detection mode, the steps are as follows: S1, the wheel hub blank to be inspected flows from the main roller conveyor to the entrance roller conveyor, and the transfer system transfers the wheel hub blank from the entrance roller conveyor to the inspection system and is located between the shape detection components of the bottom rotating platform and the top rotating platform; S2, Line Laser Profiler 1, Line Laser Profiler 2, and Line Laser Profiler 5 are respectively driven by Translation Module 1, Translation Module 2, and Lifting Module 2 to locate at the initial position points of their respective scanning trajectory lines, and then complete the scanning detection of the initial position points of the lower half of the wheel hub blank under the circumferential rotation of the bottom rotating platform; at the same time, Line Laser Profiler 3 and Line Laser Profiler 4 are respectively driven by Translation Module 3 and Lifting Module 1 to locate at the initial position points of their respective scanning trajectory lines, and then complete the scanning detection of the initial position points of the upper half of the wheel hub blank under the circumferential rotation of the top rotating platform; S3, line laser profiler 1, line laser profiler 2, and line laser profiler 5 continue to be positioned to the second position point of their respective scanning trajectory lines under the drive of translation module 1, translation module 2, and lifting module 2, and then complete the scanning detection of the second position point of the lower half of the wheel hub blank under the drive of the circular rotation of the bottom rotating platform, and so on, until the scanning detection of the last position point of the lower half of the wheel hub blank is completed; at the same time, line laser profiler 3 and line laser profiler 4 continue to be positioned to the second position point of their respective scanning trajectory lines under the drive of translation module 3 and lifting module 1, and then complete the scanning detection of the second position point of the upper half of the wheel hub blank under the drive of the circular rotation of the top rotating platform; and so on, until the scanning detection of the last position point of the upper half of the wheel hub blank is completed; thereby completing the scanning detection of all detection modes; S4, the transfer system transfers the wheel hub blank from the inspection system to the exit roller, and the exit roller drives it out to the main roller; (2) Local detection mode, the steps are as follows: S1, the wheel hub blank to be inspected flows from the main roller conveyor to the entrance roller conveyor, and the transfer system transfers the wheel hub blank from the entrance roller conveyor to the inspection system and is located between the shape detection components of the bottom rotating platform and the top rotating platform; S2, line laser profiler 1, line laser profiler 2, and line laser profiler 5 are respectively driven by translation module 1, translation module 2, and lifting module 2 to locate the key position points of their respective scanning trajectory lines, and then complete the scanning detection of the key position points of the lower half of the hub blank under the circumferential rotation of the bottom rotating platform; at the same time, line laser profiler 3 and line laser profiler 4 are respectively driven by translation module 3 and lifting module 1 to locate the key position points of their respective scanning trajectory lines, and then complete the scanning detection of the key position points of the upper half of the hub blank under the circumferential rotation of the top rotating platform; thereby completing the scanning detection of the local detection mode; S3, the transfer system transfers the wheel hub blank from the inspection system to the exit roller, and the exit roller drives it out to the main roller.

[0009] Since the present invention adopts the above technical solution, the present invention has the following advantages: Through the coordinated design of the transplanting system, the detection system and the detection method, the present invention can accurately obtain the dimensional variation and deformation characteristics of the blank, and provide rich source data support for the analysis of the blank deformation, the clamping of the blank, and the customized processing of the blank through the acquired morphological characteristics, which greatly assists the control of wheel hub deformation and small-allowance processing, thereby reducing metal loss and realizing lean management and control of metal in the wheel hub industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0011] Figure 2 Schematic diagram of the structure of the transplanting system of the present invention.

[0012] Figure 3 Schematic diagram of the structure of the detection system of the present invention.

[0013] Figure 4 Schematic diagram of the detection area division of the present invention.

[0014] Figure 5 Schematic diagram of the key dimensions obtained by the local detection mode of the present invention.

[0015] Figure Number: 1. Main roller table; 2. Entrance roller conveyor; 3. Transplanting system; 3-1. Transplanting system frame; 3-2. Gripping jaws; 3-3. Centering mechanism; 3-4. Centering mechanism connecting frame; 3-5. Transplanting system lifting module; 3-6. Transplanting system translation module; 4. Wheel hub blank; 5. Detection system; 5-1. Detection system rack; 5-2. Connecting frame 1; 5-3. Translation module 1; 5-4. Line laser profiler 1; 5-5. Translation module 2; 5-6. Line laser profiler 2; 5-7. Line laser profiler 3; 5-8. Translation module 3; 5-9. Top rotating platform; 5-10. Connecting frame 2; 5-11. Lifting mechanism; 5-12. Lifting module 1; 5-13. Line laser profiler 4; 5-14. Lifting module 2; 5-15. Line laser profiler 5; 5-16. Bottom rotating platform; 6. Exit roller conveyor. DETAILED DESCRIPTION

[0016] The technical solution of the present invention will be further specifically described below through examples and in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0017] In the description of the present invention, it should be noted that the terms "up", "down", "in", "out", "front", "back", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention. Example:

[0018] like Figure 1 and 3 As shown, a wheel hub blank shape detection device includes a main roller conveyor 1, an entrance roller conveyor 2 and an exit roller conveyor 6 arranged on one side of the main roller conveyor 1, a detection system 5 arranged between the entrance roller conveyor 2 and the exit roller conveyor 6, and a transfer system 3 arranged on the other side of the entrance roller conveyor 2 and the exit roller conveyor 6 for transferring the wheel hub blank 4 from the entrance roller conveyor 2 to the detection system 5 and the exit roller conveyor 6 in the order of detection; The detection system 5 includes a detection system frame 5-1, a bottom rotating platform 5-16 mounted on the bottom of the detection system frame 5-1 through a connecting frame 1 5-2, a connecting frame 2 5-10 mounted on the top of the detection system frame 5-1 through a lifting mechanism 5-11, a top rotating platform 5-9 mounted on the lower end of the connecting frame 2 5-10, and shape detection components distributedly mounted on the bottom rotating platform 5-16 and the top rotating platform 5-9; In this embodiment, the inspection process of the hub blank 4 is as follows: the hub blank 4 circulates normally on the main roller 1 and is sorted by counting. The hub blank 4 that needs to be inspected enters the entrance roller 2, and the transplanting system 3 clamps the hub blank 4 for transplanting. After transplanting to the inspection station, the translational movement of the transplanting system 3 stops, and each morphology detection component completes the scanning of the key morphology of the hub blank 4, and uses a customized splicing algorithm to complete the splicing and reconstruction of the morphology, thereby obtaining the morphological characteristics of the hub blank; after the inspection is completed, the transplanting system 3 drives the hub blank 4 to be transplanted to the exit roller 6, and flows out from the exit roller 6 to the main roller 1.

[0019] As a specific implementation of this embodiment, Figure 3 As shown, the morphology detection component includes a line laser profiler 1 5-4, a line laser profiler 2 5-6, and a line laser profiler 5 5-15, which are respectively installed on the bottom rotating platform 5-16 through a translation module 1 5-3, a translation module 2 5-5, and a lifting module 2 5-14, and a line laser profiler 3 5-7 and a line laser profiler 4 5-13, which are respectively installed on the top rotating platform 5-9 through a translation module 3 5-8 and a lifting module 1 5-12.

[0020] Specifically, the line laser profiler 1 5-4, the line laser profiler 2 5-6, the line laser profiler 3 5-7, the line laser profiler 4 5-13 and the line laser profiler 5-15 are respectively installed with the translation module 1 5-3, the translation module 2 5-5, the translation module 3 5-8, the lifting module 1 5-12 and the lifting module 2 5-14 through the rotatable adjustment component; the rotatable adjustment component includes two elastic clamping blocks and a support shaft rotatably installed between the two elastic clamping blocks, and the elastic clamping blocks are provided with bolts that can fix the support shaft; taking the line laser profiler 3 5-7 and the translation module 3 5-8 as an example, Figure 3 As shown, the two elastic clamps of the rotatable adjustment component are fixedly connected to the line laser profiler 3 5-7 and the translation module 3 5-8 respectively, and the support shaft is rotatably installed between the two elastic clamps. For wheel hub blanks 4 of different models and specifications, the staff needs to adjust the position of the line laser profiler 3 5-7 relative to the translation module 3 5-8. After the adjustment, the position of the line laser profiler 3 5-7 relative to the translation module 3 5-8 is fixed by tightening the bolts.

[0021] As a specific implementation of this embodiment, Figure 2As shown, the transplanting system 3 includes a transplanting system frame 3-1, a transplanting system translation module 3-6 horizontally installed on the transplanting system frame 3-1, a transplanting system lifting module 3-5 slidably installed on the transplanting system translation module 3-6, a centering mechanism 3-3 fixedly connected to the transplanting system lifting module 3-5 through a centering mechanism connecting frame 3-4, and a group of clamps 3-2 installed on the centering mechanism 3-3 and moving toward or oppositely; wherein, the clamping head of the clamping jaw 3-2 is made of polyurethane block material to maintain a stable clamping force to adapt to the deformation of the wheel hub blank 4.

[0022] A wheel hub blank morphology detection method, such as Figure 4-5 As shown, the following modes are included: (1) Full detection mode: In full detection mode, five groups of shape detection components are used to perform multi-position scanning. Each group of shape detection components independently performs multi-ring scanning data splicing, and then the overall scanning data of the five groups of shape detection components are spliced. The full detection mode can obtain full data of the contour blank shape at almost all positions, which is used for more comprehensive contour deformation data analysis; Figure 4 As shown, the areas corresponding to each group of topography detection components are: Line laser profiler 1 5-4 corresponds to area AF, line laser profiler 2 5-6 corresponds to area AB, line laser profiler 3 5-7 corresponds to area BC, line laser profiler 4 5-13 corresponds to area CD, and line laser profiler 5 5-15 corresponds to area EF. The specific detection steps are as follows: S1, the wheel hub blank 4 to be inspected flows from the main roller conveyor 1 to the entrance roller conveyor 2, and the transfer system 3 transfers the wheel hub blank 4 from the entrance roller conveyor 2 to the inspection system 5 and is located between the shape inspection components of the bottom rotating platform 5-16 and the top rotating platform 5-9; S2, the line laser profiler 1 5-4, the line laser profiler 2 5-6, and the line laser profiler 5-15 are respectively driven by the translation module 1 5-3, the translation module 2 5-5, and the lifting module 2 5-14 to locate at the initial position points of their respective scanning trajectory lines, and then complete the scanning detection of the initial position points of the lower half of the wheel hub blank 4 under the circumferential rotation of the bottom rotating platform 5-16; at the same time, the line laser profiler 3 5-7 and the line laser profiler 4 5-13 are respectively driven by the translation module 3 5-8 and the lifting module 1 5-12 to locate at the initial position points of their respective scanning trajectory lines, and then complete the scanning detection of the initial position points of the upper half of the wheel hub blank 4 under the circumferential rotation of the top rotating platform 5-9; S3, the line laser profiler 1 5-4, the line laser profiler 2 5-6, and the line laser profiler 5-15 continue to be positioned to the second position point of their respective scanning trajectory lines under the drive of the translation module 1 5-3, the translation module 2 5-5, and the lifting module 2 5-14, and then complete the scanning inspection of the second position point of the lower half of the wheel hub blank 4 under the drive of the circular rotation of the bottom rotating platform 5-16, and so on, until the scanning inspection of the last position point of the lower half of the wheel hub blank 4 is completed; at the same time, the line laser profiler 3 5-7 and the line laser profiler 4 5-13 continue to be positioned to the second position point of their respective scanning trajectory lines under the drive of the translation module 3 5-8 and the lifting module 1 5-12, and then complete the scanning inspection of the second position point of the upper half of the wheel hub blank 4 under the drive of the circular rotation of the top rotating platform 5-9; and so on, until the scanning inspection of the last position point of the upper half of the wheel hub blank 4 is completed; thereby completing the scanning inspection of all inspection modes; S4, the transfer system 3 transfers the wheel hub blank 4 from the detection system 5 to the exit roller 6, and the exit roller 6 drives it out to the main roller 1; (2) Local detection mode: The local detection mode only requires five groups of shape detection components to move to the specified position according to the actual size of the wheel hub blank 4. After one scan, the data of the five groups of shape detection components are spliced ​​to obtain local shape data and key size data. For example, the five groups of shape detection components move to the specified position. Figure 4 The parts shown can be obtained Figure 5 The local detection mode can obtain the blank morphology and key dimensions of the local key position for monitoring the blank status; the specific detection steps are as follows: S1, the wheel hub blank 4 to be inspected flows from the main roller conveyor 1 to the entrance roller conveyor 2, and the transfer system 3 transfers the wheel hub blank 4 from the entrance roller conveyor 2 to the inspection system 5 and is located between the shape inspection components of the bottom rotating platform 5-16 and the top rotating platform 5-9; S2, the line laser profiler 1 5-4, the line laser profiler 2 5-6, and the line laser profiler 5-15 are respectively driven by the translation module 1 5-3, the translation module 2 5-5, and the lifting module 2 5-14 to locate at the key position points of their respective scanning trajectory lines, and then the bottom rotating platform 5-16 is driven to rotate in a circle to complete the scanning inspection of the key position points of the lower half of the wheel hub blank 4; at the same time, the line laser profiler 3 5-7 and the line laser profiler 4 5-13 are respectively driven by the translation module 3 5-8 and the lifting module 1 5-12 to locate at the key position points of their respective scanning trajectory lines, and then the top rotating platform 5-9 is driven to rotate in a circle to complete the scanning inspection of the key position points of the upper half of the wheel hub blank 4; thereby completing the scanning inspection of the local inspection mode; S3 , the transfer system 3 transfers the wheel hub blank 4 from the detection system 5 to the exit roller conveyor 6 , and the exit roller conveyor 6 drives the wheel hub blank 4 to flow out to the main roller conveyor 1 .

[0023] It should be noted that the above two detection modes can be switched according to different scenarios. For example, when conducting small-batch trial production of new products, the full detection mode can be used for scanning detection, while in standardized mass production, the local detection mode can be used for scanning detection.

[0024] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A wheel hub blank morphology detection device, characterized in that: The invention comprises a main roller conveyor (1), an inlet roller conveyor (2) and an outlet roller conveyor (6) arranged on one side of the main roller conveyor (1), a detection system (5) arranged between the inlet roller conveyor (2) and the outlet roller conveyor (6), and a transfer system (3) arranged on the other side of the inlet roller conveyor (2) and the outlet roller conveyor (6) and used for transferring the wheel hub blank (4) from the inlet roller conveyor (2) to the detection system (5) and the outlet roller conveyor (6) in sequence according to the detection sequence; The detection system (5) comprises a detection system frame (5-1), a bottom rotating platform (5-16) mounted on the bottom of the detection system frame (5-1) via a connecting frame 1 (5-2), a connecting frame 2 (5-10) mounted on the top of the detection system frame (5-1) via a lifting mechanism (5-11), a top rotating platform (5-9) mounted at the lower end of the connecting frame 2 (5-10), and shape detection components distributedly mounted on the bottom rotating platform (5-16) and the top rotating platform (5-9).

2. A wheel hub blank morphology detection device according to claim 1, characterized in that: The shape detection component comprises a line laser profiler 1 (5-4), a line laser profiler 2 (5-6), and a line laser profiler 5 (5-15) which are respectively mounted on a bottom rotating platform (5-16) via a translation module 1 (5-3), a translation module 2 (5-5), and a lifting module 2 (5-14); and a line laser profiler 3 (5-7) and a line laser profiler 4 (5-13) which are respectively mounted on a top rotating platform (5-9) via a translation module 3 (5-8) and a lifting module 1 (5-12).

3. A wheel hub blank morphology detection device according to claim 2, characterized in that: The line laser profiler 1 (5-4), the line laser profiler 2 (5-6), the line laser profiler 3 (5-7), the line laser profiler 4 (5-13) and the line laser profiler 5 (5-15) are respectively installed with the translation module 1 (5-3), the translation module 2 (5-5), the translation module 3 (5-8), the lifting module 1 (5-12) and the lifting module 2 (5-14) through a rotatable adjustment component.

4. A wheel hub blank morphology detection device according to claim 1, characterized in that: The transplanting system (3) comprises a transplanting system frame (3-1), a transplanting system translation module (3-6) horizontally mounted on the transplanting system frame (3-1), a transplanting system lifting module (3-5) slidably mounted on the transplanting system translation module (3-6), a centering mechanism (3-3) fixedly connected to the transplanting system lifting module (3-5) via a centering mechanism connecting frame (3-4), and a group of clamping claws (3-2) mounted on the centering mechanism (3-3) and moving towards or in opposite directions.

5. A wheel hub blank shape detection device according to claim 4, characterized in that: The clamping head of the clamping jaw (3-2) is made of a polyurethane block material.

6. A method for detecting the shape of a wheel hub blank, characterized in that: The following modes are included: (I) All detection mode, the steps are as follows: S1, the wheel hub blank (4) to be inspected flows from the main roller conveyor (1) to the entrance roller conveyor (2), and the transfer system (3) transfers the wheel hub blank (4) from the entrance roller conveyor (2) to the inspection system (5) and is located between the shape inspection components of the bottom rotating platform (5-16) and the top rotating platform (5-9); S2, the line laser profiler 1 (5-4), the line laser profiler 2 (5-6), and the line laser profiler 5 (5-15) are respectively positioned to the initial position points of their respective scanning trajectory lines under the drive of the translation module 1 (5-3), the translation module 2 (5-5), and the lifting module 2 (5-14), and then the scanning detection of the initial position points of the lower half of the wheel hub blank (4) is completed under the drive of the circular rotation of the bottom rotating platform (5-16); at the same time, the line laser profiler 3 (5-7) and the line laser profiler 4 (5-13) are respectively positioned to the initial position points of their respective scanning trajectory lines under the drive of the translation module 3 (5-8) and the lifting module 1 (5-12), and then the scanning detection of the initial position points of the upper half of the wheel hub blank (4) is completed under the drive of the circular rotation of the top rotating platform (5-9); S3, the line laser profiler 1 (5-4), the line laser profiler 2 (5-6), and the line laser profiler 5 (5-15) are respectively driven by the translation module 1 (5-3), the translation module 2 (5-5), and the lifting module 2 (5-14) to continue to locate to the second position point of their respective scanning trajectory lines, and then complete the scanning detection of the second position point of the lower half of the wheel hub blank (4) under the circular rotation of the bottom rotating platform (5-16), and so on, until the scanning of the last position point of the lower half of the wheel hub blank (4) is completed. Scanning detection; at the same time, the line laser profiler three (5-7) and the line laser profiler four (5-13) continue to be positioned to the second position point of their respective scanning trajectory lines under the drive of the translation module three (5-8) and the lifting module one (5-12), and then complete the scanning detection of the second position point of the upper half of the wheel hub blank (4) under the drive of the circular rotation of the top rotating platform (5-9); and so on, until the scanning detection of the last position point of the upper half of the wheel hub blank (4) is completed; thereby completing the scanning detection of all detection modes; S4, the transfer system (3) transfers the wheel hub blank (4) from the detection system (5) to the exit roller conveyor (6), and the exit roller conveyor (6) drives the wheel hub blank to flow out to the main roller conveyor (1); (II) Local detection mode, the steps are as follows: S1, the wheel hub blank (4) to be inspected flows from the main roller conveyor (1) to the entrance roller conveyor (2), and the transfer system (3) transfers the wheel hub blank (4) from the entrance roller conveyor (2) to the inspection system (5) and is located between the shape inspection components of the bottom rotating platform (5-16) and the top rotating platform (5-9); S2, the line laser profiler 1 (5-4), the line laser profiler 2 (5-6), and the line laser profiler 5 (5-15) are respectively positioned to the key position points of their respective scanning trajectory lines under the drive of the translation module 1 (5-3), the translation module 2 (5-5), and the lifting module 2 (5-14), and then the scanning detection of the key position points of the lower half of the wheel hub blank (4) is completed under the drive of the circular rotation of the bottom rotating platform (5-16); at the same time, the line laser profiler 3 (5-7) and the line laser profiler 4 (5-13) are respectively positioned to the key position points of their respective scanning trajectory lines under the drive of the translation module 3 (5-8) and the lifting module 1 (5-12), and then the scanning detection of the key position points of the upper half of the wheel hub blank (4) is completed under the drive of the circular rotation of the top rotating platform (5-9); thereby completing the scanning detection of the local detection mode. S3, the transfer system (3) transfers the wheel hub blank (4) from the detection system (5) to the exit roller conveyor (6), and the exit roller conveyor (6) drives the wheel hub blank to flow out to the main roller conveyor (1).

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