Curved Surface Laser Processing With Synchronized Workpiece Orientation
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Solution Overview
Problem
Existing laser processing methods for hard and brittle materials like metals and ceramics face challenges in achieving high surface quality, efficient processing time, and cost-effectiveness due to the need for redundant components and complex control systems, especially when processing curved surfaces.
Innovation Solution
A method and device that synchronizes the orientation of the workpiece with respect to a reference path and the movement of the laser beam along a defined path, eliminating the need for redundant components by simultaneously orienting the workpiece and moving the laser beam, while modulating laser parameters for homogeneous energy distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If redundant optical axes and mechanical axes are used to maintain constant incidence angle on curved surfaces, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The patent extracts and eliminates the redundant optical axes from the system. Instead of using multiple overlapping optical and mechanical axes to maintain constant incidence angle, the invention uses a single optical axis combined with real-time workpiece orientation adjustment and adaptive laser path planning, thereby removing unnecessary redundant components while maintaining manufacturing precision on curved surfaces
Solution Approach 2:
The patent applies dynamics by making the workpiece orientation adjustable in real-time during laser processing. The holder can dynamically reorient the workpiece to maintain optimal incidence angle, and the laser beam path is adaptively planned based on the curved surface geometry, replacing static redundant axes with dynamic adjustment mechanisms
2Manufacturing precision
If laser beam is moved along repetitive predefined path while workpiece moves along second predefined path, then manufacturing precision is improved, but productivity decreases
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing the adaptive laser path planning data before processing begins. The system pre-determines the optimal laser beam trajectory based on the workpiece geometry and holder orientation capabilities, allowing the processing to proceed efficiently without real-time computational delays, thus improving productivity while maintaining precision
3Ease of operation
If movement along mechanical axes is controlled by first controller and optical axes by second controller, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The patent merges the control functions by integrating the control of workpiece holder orientation and laser beam path planning into a single coordinated control system. Instead of using separate controllers for mechanical and optical axes, the invention uses one controller that simultaneously manages both functions, simplifying the control architecture while maintaining ease of operation through unified parameter adjustment
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 minimizes processing time and energy input, reduces investment and operational costs, and enhances surface quality by optimizing processing speed and energy distribution, particularly suitable for curved surfaces of cutting tools.
Implementation Method 1
The impingement of the laser beam onto that surface locally melts, vaporizes and/or ablates material from the workpiece to produce a desired shape of the surface within certain tolerances
Implementation Method 2
The impingement of the laser beam onto that surface locally melts, vaporizes and/or ablates material from the workpiece
Data Source
Figure 1
Figure 2
Figure 3A~3C
AI summary
The present invention relates to a laser processing method (100) and device (200), in particular for processing a processing surface (5) of any shape of a workpiece (2), preferably a curved surface of a cutting tool, wherein through simultaneous orientation of a workpiece (2) and movement of a laser beam (205) across a processing surface (5) of the workpiece (2) a processing volume (4) is removed from the workpiece (2) to expose a final surface (3).