Continuous Microhole Drilling with Gradual Profile Transitions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for drilling microholes in solid sheet materials like aluminum and titanium alloys for aerospace components require batch processing, leading to inefficient sudden transitions between different hole properties, which may not be desirable for consistent drag reduction.
Innovation Solution
A method that defines areas with specific hole profiles and distributions, including a transition zone for continuous and gradual changes in hole spacing and profile, allowing for efficient continuous drilling operations while maintaining consistent properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If batch processing method is used to drill holes with different profiles and distributions in different areas, then consistency of hole properties within each area is improved, but productivity is reduced due to multiple separate drilling operations
Solution Approach 1:
The patent applies dynamics by making the drilling process continuously adaptable through real-time modification of process parameters. The system transitions from static batch processing to dynamic continuous processing where hole profile and distribution parameters can be adjusted on-the-fly without stopping the drilling operation, enabling both consistency within areas and high productivity across the entire workpiece.
Solution Approach 2:
The patent implements parameter changes by systematically varying drilling parameters (such as hole spacing, diameter, depth, and pattern density) across different zones of the workpiece during a single continuous operation. This allows the system to maintain consistent properties within each zone while efficiently transitioning between zones, resolving the contradiction between precision and productivity.
2Manufacturing precision
If batch processing with demarked areas is used, then manufacturing precision of hole properties within each area is improved, but the transition between different areas creates sudden property changes which may be undesirable
Solution Approach 1:
The system uses dynamic parameter adjustment to create smooth transitions between zones. Instead of abrupt changes at zone boundaries, the drilling parameters are continuously modified during the drilling process, creating a gradient transition that maintains both local precision and global continuity of the hole distribution pattern.
3Manufacturing precision
If multiple separate drilling operations are performed for different areas, then manufacturing precision of each area is improved, but loss of time increases due to repositioning and parameter changes between batches
Solution Approach 1:
The patent implements continuity of useful action by performing all drilling operations in a single continuous pass without stopping to reposition or reconfigure the system between different areas. The drilling process continuously adapts its parameters while maintaining uninterrupted operation, eliminating idle time and achieving both precision and efficiency.
4Manufacturing precision
If laser beam indexing is used to drill microholes in arrays, then manufacturing precision of hole placement is improved, but device complexity increases due to precise positioning systems
Solution Approach 1:
The patent reduces mechanical complexity by substituting complex mechanical positioning systems with a more straightforward approach. Instead of requiring highly complex indexing mechanisms to achieve precise hole placement across different zones, the system uses a simpler positioning system combined with dynamic parameter adjustment during drilling, achieving the same precision with reduced mechanical complexity.
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
Enables efficient continuous drilling with gradual transitions between different hole properties, improving the consistency and applicability of microhole arrays for drag reduction in aerospace components.
Implementation Method 1
The incident beam energy removes material by ablation and/or vaporisation in localised manner to create the desired array of microholes
Implementation Method 2
The incident beam energy removes material by ablation and/or vaporisation in localised manner to create the desired array of microholes
Data Source
AI summary
A method of drilling holes through a solid material in such manner as to give holes in a first area a first profile and distribution and holes in a second area a second profile and distribution comprising the steps of: —defining a first area in which holes have a first profile and distribution; —defining a second area in which holes have a second profile and distribution at least one of which is different from that in the first area; —defining a transition zone in which holes have a profile and/or distribution as the case may be which undergo a continuous and gradual transition from that in the first area to that in the second area; —drilling holes in all of the first area, the transition zone and the second area via a continuous process.