Metal Surface Dimple Formation Using Parallel Pulsed Laser Beams
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Solution Overview
Problem
The existing method of forming dimples on a metal member's surface using laser beam radiation is time-consuming, as it involves radiating a single laser beam successively to create multiple dimples.
Innovation Solution
Simultaneously radiating two or more laser beams from a single laser apparatus to multiple spaced regions on the metal member's surface, with pulsed radiation alternating between high and low intensity to prevent deformation and optimize dimple formation, allowing for faster dimple creation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If one laser beam is radiated in succession to form multiple dimples, then dimples can be formed on the metal member surface, but the process is time consuming
Solution Approach 1:
The laser beam is divided into multiple separate beams using a beam splitter. Each beam is directed to a different radiation region on the metal member surface, allowing simultaneous formation of multiple dimples in parallel, thereby increasing productivity while maintaining dimple formation quality
Solution Approach 2:
Multiple laser beams are combined to operate simultaneously on different regions of the metal member. By merging the capability of multiple beams into a single laser apparatus system, the process forms multiple dimples at the same time, resolving the contradiction between quality and speed
2Productivity
If laser beams are radiated with high intensity to form dimples quickly, then productivity increases, but adjacent regions may melt and deform the dimples
Solution Approach 1:
Each radiation region receives laser beam radiation with locally optimized parameters. The distance between adjacent radiation regions is carefully controlled to ensure that heat does not spread from one region to another, allowing each dimple to be formed with precise shape control while maintaining high formation efficiency
Solution Approach 2:
The laser beams are radiated in a periodic manner with controlled timing. By using multiple beams that can be activated in sequence or simultaneously with appropriate timing, the system achieves high productivity while preventing thermal accumulation that would cause melting and deformation
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 approach reduces the time required to form dimples on the metal member's surface while preventing deformation by controlling heat application and maintaining adequate distance between radiation regions, resulting in preferred and more preferred dimple formation configurations.
Implementation Method 1
simultaneously radiating two or more laser beams from a single laser apparatus to two or more radiation regions spaced apart from each other on an outer surface of a metal member to thereby form a dimple in each radiation region
Implementation Method 2
radiating two or more laser beams... to form a dimple in each radiation region
Implementation Method 3
during radiation of the two or more laser beams to form the dimple in each radiation region, a high period and a low period may alternately arrive more than once. In the high period, an intensity of each laser beam may be a high-level intensity, and in the low period, the intensity of each laser beam may be reduced to a low-level intensity
Data Source
AI summary
In a manufacturing method of a metal member, two or more laser beams are simultaneously radiated from a single laser apparatus to two or more radiation regions spaced apart from each other on an outer surface of a metal member to thereby form a dimple in each radiation region.