Laser Focal Zone Layout for Perpendicular Glass Separation
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Solution Overview
Problem
Existing laser machining technologies face challenges in efficiently creating angled modification regions on transparent workpieces, requiring multiple machining steps and equipment setups, which complicates the separation of workpiece segments with perpendicular separation faces.
Innovation Solution
An apparatus comprising multiple laser machining units forming focal zones oriented transversely to each other, allowing quasi-simultaneous or time-offset machining of a workpiece with focal zones spaced apart at a work distance, enabling the formation of angled modification regions and separation faces perpendicular to the machining plane.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple separate machining units are used to create perpendicular separation faces, then the completeness of machining operations is improved, but the device complexity and machining time increase
Solution Approach 1:
The patent combines multiple laser machining units into a single integrated apparatus that can form multiple focal zones with different orientations simultaneously. The first laser machining unit forms a first focal zone extending in a first main direction, while the second laser machining unit forms a second focal zone extending in a second main direction transverse to the first. Both focal zones are spaced apart parallel to the machining plane, allowing perpendicular separation faces to be created in one operation rather than requiring separate machining steps with multiple independent units.
2Manufacturing precision
If multiple machining steps are used to create angled modification regions, then the precision of separation faces is improved, but the productivity decreases
Solution Approach 1:
The patent enables continuous machining action by having multiple laser machining units operate simultaneously to create both first and second focal zones in parallel. The first and second laser machining units can process different regions of the workpiece at the same time, maintaining continuous useful action throughout the machining process rather than requiring sequential operations. This simultaneous processing maintains high precision while significantly reducing total machining time and improving productivity.
3Productivity
If focal zones are spaced closer together, then the machining efficiency is improved, but the quality of separation faces deteriorates
Solution Approach 1:
The patent applies local quality by creating distinct focal zones with specific spatial relationships optimized for their respective functions. The first focal zone and second focal zone are spaced apart parallel to the machining plane at distances optimized for creating high-quality separation faces in their respective regions. Each focal zone maintains its own optimized parameters for material interaction, allowing efficient machining while preserving the quality needed for clean separation faces at different locations in the workpiece.
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 simplifies the process by allowing the creation of angled modification regions and separation faces in fewer steps, reducing machining time and eliminating the need for separate machining units for perpendicular lines, thereby enhancing the efficiency of laser machining for transparent workpieces.
Implementation Method 1
a first laser machining unit for forming a first focal zone which extends in a first main direction of extent, and at least one further laser machining unit for forming at least one further focal zone
Implementation Method 2
The workpiece comprises a material which is transparent to a laser beam which respectively forms the first focal zone and the at least one further focal zone
Data Source
AI summary
An apparatus for laser machining a workpiece in a machining plane includes a first laser machining unit for forming a first focal zone which extends in a first main direction of extent, and at least one further laser machining unit for forming at least one further focal zone which extends in a further main direction of extent oriented transversely to the first main direction of extent. The first focal zone and the at least one further focal zone are spaced apart from one another parallel to the machining plane at a work distance. The first laser machining unit and the at least one further laser machining unit are movable in an advancement direction that is oriented parallel to the machining plane. The workpiece comprises a material that is transparent to a laser beam which respectively forms the first focal zone and the at least one further focal zone.