Vehicle Wheel Laser Paint Carving for Low-Energy Metallic Finish
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Solution Overview
Problem
Conventional methods for painting and treating vehicle wheels, such as CNC milling, are energy-intensive, costly, and require multiple preparation steps and equipment maintenance, leading to inefficiencies and reduced anti-corrosion effectiveness.
Innovation Solution
A method involving laser carving of the wheel's outer surface, which includes priming, laser carving to remove the painted surface, and fine-polishing, using a laser carving machine with reduced power consumption and fewer steps, allowing for efficient pattern creation and corrosion protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If CNC milling is used to remove painted surface, then the painted surface can be removed to expose metallic luster, but the energy consumption is high (12 kw) and manufacturing cost increases
Solution Approach 1:
The patent replaces the mechanical CNC milling system with a laser-based system. The laser carving machine uses optical energy instead of mechanical cutting tools, reducing energy consumption from 12 kw to 0.5 kw while achieving the same surface treatment effect of removing painted surface to expose metallic luster
Solution Approach 2:
The patent changes the fundamental parameter of the removal process from mechanical force (CNC milling) to optical energy concentration (laser). This parameter change enables precise local heating and vaporization of paint material, achieving the desired surface effect with significantly lower energy input
2Manufacturing precision
If CNC milling is used to remove painted surface, then the selected area can be exposed, but multiple preparation steps and blade replacement are required
Solution Approach 1:
The patent replaces the complex mechanical CNC system requiring blade installation, programming, and maintenance with a laser system that uses digital control and optical focusing. This substitution eliminates mechanical complexity while maintaining or improving precision through software-controlled laser positioning and parameters
Solution Approach 2:
The laser carving machine serves multiple functions: it can remove painted surface, create patterns, and expose metallic luster all in one process. The system is adaptable to different wheel designs and patterns through software programming, eliminating the need for physical blade changes and retooling
3Productivity
If CNC blades are used for surface treatment, then material removal is achieved, but blade maintenance and replacement are needed which reduces anti-corrosion effectiveness
Solution Approach 1:
The patent replaces mechanical blade cutting with laser ablation. The laser beam vaporizes and removes painted material without physical contact, eliminating blade wear and the risk of blade-generated debris compromising the anti-corrosion properties of the exposed metallic surface
Solution Approach 2:
Instead of using durable but problematic mechanical blades that require maintenance and can contaminate the surface, the patent uses a laser beam as a disposable, clean removal mechanism. The laser energy is consumed in the process but leaves no physical residue or contamination on the treated surface
4Use of energy by moving object
If laser carving is used, then energy consumption is reduced to 0.5 kw, but the process must be effective for both small and large number of wheels
Solution Approach 1:
The laser system uses high-frequency pulsing (1 kHz to 4 kHz) to efficiently remove material. This periodic action allows the laser to work in rapid pulses, achieving high material removal rates with low average power consumption, making it suitable for both single-piece and batch production
Solution Approach 2:
The laser carving machine features dynamic scanning capabilities with adjustable scanning speeds (100 mm/s to 4000 mm/s) and frequencies. This dynamic control allows optimization of processing parameters based on production volume requirements, maintaining high efficiency whether treating one wheel or many wheels
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
This method significantly reduces energy consumption and manufacturing costs while maintaining effective anti-corrosion protection and aesthetic enhancement, with improved efficiency and precision compared to traditional methods.
Implementation Method 1
carving a selected area of the primer form the wheel by laser to remove the primer in the selected area from the surface of the wheel
Data Source
AI summary
A method for laser carving of paint on an outer surface of a vehicle wheel includes a step of priming: priming an outer surface of the wheel to form a painted surface; a step of laser carving: carving the primer from a selected area of the wheel by laser to remove the painted surface from the selected area, the selected area having an exposed area with metallic luster, and a step of fine-polish: polishing the outer surface of the wheel to form a fine-polished area at the exposed area. The painted surface on the wheel can be quickly removed to disclose a selected area with metallic luster, while the wheel is prevented from corrosion so as to reduce manufacturing cost and increase precision.