Automated 3D Wheel Hub Scanning System with Dynamic Positioning
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Solution Overview
Problem
Existing 3D scanning technologies for automotive wheel hubs lack automation, requiring manual handling and positioning, leading to reduced scanning accuracy and flexibility, and are not suitable for intelligent production lines due to limited degrees of freedom and inability to adjust focal distance, making them unsuitable for efficient and precise automatic processing.
Innovation Solution
A full-automatic wheel hub 3D scanning system with an X-directional and Y-directional displacement control device, a roller-table assembly with photoelectric sensors, a 3D scanning device mounted on a bracket controlled by displacement devices, and a robot for conveying wheel hubs, along with a clamping device that can adapt to different wheel sizes using a crank sliding block mechanism and V-shaped wheels, enabling precise and flexible scanning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual measurement by traditional gauges is used, then operation simplicity is maintained, but measurement precision deteriorates due to large human error and inability to measure complex surfaces
Solution Approach 1:
The patent replaces manual mechanical gauge measurement with an automated 3D scanning system that uses optical fields (laser lines) to capture wheel hub geometry. The system substitutes human operation with automated image processing and 3D reconstruction algorithms, achieving high measurement precision without sacrificing ease of operation through the automated workflow.
2Measurement precision
If CMM measurement method is used, then measurement precision is improved, but device complexity increases and adaptability deteriorates due to structural limitations preventing measurement of inaccessible parts
Solution Approach 1:
The patent transitions from contact-based point measurement (CMM) to non-contact optical field measurement using multiple laser lines projected at different angles. This dimensional approach allows simultaneous measurement of multiple surface points and captures complex geometries including inaccessible areas, greatly improving adaptability while maintaining precision.
Solution Approach 2:
The 3D scanning system is designed to universally measure various wheel hub models and sizes through automated parameter input and adaptive scanning. The system can handle different geometries, materials, and surface conditions without requiring physical contact or specialized measurement heads, achieving multi-functionality that CMM cannot provide.
3Measurement precision
If fixed radius rotating platform is used, then device complexity is reduced, but measurement precision deteriorates because radial distance between scanner and workpiece cannot be adjusted affecting scanning accuracy
Solution Approach 1:
The patent replaces the fixed-radius rotating platform with a dynamic positioning system where the scanner's radial distance from the workpiece can be adjusted. The scanner is mounted on a movable bracket that can change its position along the rotation axis, allowing optimization of scanning accuracy for different workpiece sizes and geometries while maintaining reasonable device complexity through controlled adjustability.
4Measurement precision
If scanner is limited to horizontal plane scanning, then device complexity is reduced, but measurement precision deteriorates because elevation angle cannot be adjusted resulting in insufficient scan data acquisition
Solution Approach 1:
The patent enhances the scanning system by adding elevation angle adjustment capability to the scanner mounting bracket. This dynamic positioning allows the scanner to capture data from multiple angular perspectives, ensuring complete data acquisition for complex wheel hub geometries while keeping device complexity manageable through a single additional degree of freedom.
5Extent of automation
If automated pickup, clamping and positioning devices are added, then extent of automation is improved, but device complexity increases
Solution Approach 1:
The patent implements automated pickup, clamping, and positioning functions that enable the system to service itself without extensive manual intervention. The automated workflow reduces the need for complex manual operations while maintaining reasonable device complexity through integrated control systems that coordinate the various automated functions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system achieves high automation, reduces labor intensity, improves production efficiency, ensures accurate scanning, and adapts to various wheel hub sizes, enhancing scanning accuracy and flexibility, making it suitable for intelligent production lines.
Implementation Method 1
the roller table is provided with an opposite-type photoelectric sensors and a wheel hub centring positioning device for centring positioning a wheel hub
Data Source
AI summary
Provided a full-automatic wheel hub 3D scanning system for intelligent production line of automotive wheel hubs, comprising: a base plate is provided with an X-directional displacement control device and a Y-directional displacement control device; a roller-table assembly is arranged on the base plate and comprises a roller table, wherein the roller table is provided with an opposite-type photoelectric sensors and a wheel hub centring positioning device for centring positioning a wheel hub; a 3D scanning device, comprising a mounting bracket, wherein the bottom of the mounting bracket is controlled by the Y-directional displacement control device; a 3D scanner is mounted on the mounting bracket; a wheel hub scanning platform is arranged at an end of the roller-table assembly and is controlled by the X-directional displacement control device; and a robot is arranged on a first side of the wheel hub scanning platform, for conveying the wheel hubs after 3D scanning.