Laser Processing Apparatus Prism Scanning Control
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Solution Overview
Problem
Laser processing apparatuses face challenges in accurately forming holes of arbitrary shapes in workpieces, leading to degraded quality due to inaccuracies in laser processing.
Innovation Solution
A laser processing apparatus and method utilizing a system of prisms and driving devices to control laser light irradiation conditions, including incidence position and angle, by adjusting the relative positions of prisms within the optical system, allowing for precise manipulation of laser light around the optical axis and accurate processing of workpieces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional laser processing methods are used, then the processing speed is maintained, but the manufacturing precision and hole shape accuracy are degraded
Solution Approach 1:
The patent applies the dynamics principle by making the optical system movable and adjustable. Specifically, the laser beam is dynamically scanned in the radial direction using a scanning optical system, and the incidence angle is continuously adjusted during processing. This allows the laser beam to precisely follow arbitrary hole shapes while maintaining high manufacturing precision, resolving the contradiction between accuracy and system complexity.
Solution Approach 2:
The patent employs parameter changes by dynamically adjusting multiple parameters during laser processing: the radial position of the laser beam, the incidence angle relative to the workpiece surface, and the beam scanning speed. These parameter changes enable precise control over the laser-matter interaction, achieving high hole shape accuracy while the control system manages the increased complexity through coordinated parameter adjustment.
2Adaptability or versatility
If the laser beam is fixed at a single incidence angle, then the device complexity is reduced, but the adaptability to process arbitrary hole shapes is limited
Solution Approach 1:
The patent makes the incidence angle dynamic rather than fixed. The optical system is configured to automatically adjust the incidence angle as the laser beam scans radially, enabling adaptation to arbitrary hole shapes including tapered and curved geometries. This dynamic adjustment, while increasing control complexity, provides the necessary versatility for processing diverse workpiece features.
Solution Approach 2:
The patent creates a universal laser processing system that can handle multiple hole shapes (circular, tapered, curved, arbitrary patterns) through a single integrated optical system. The scanning mechanism and adjustable incidence angle configuration allow the same system to perform various processing tasks, achieving versatility without requiring multiple specialized devices.
3Productivity
If the laser beam is scanned rapidly to increase productivity, then the processing speed is improved, but the manufacturing precision of the hole shape may be compromised
Solution Approach 1:
The patent maintains continuous and coordinated action between the laser beam scanning and the incidence angle adjustment. The optical system ensures that the incidence angle changes continuously and smoothly as the beam scans radially, without interruption or lag. This continuous coordinated action allows high scanning speeds to be maintained while preserving hole shape accuracy, as the beam continuously follows the desired trajectory with precise angular control.
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 high-quality and high-accuracy processing of workpieces by precisely controlling laser light irradiation conditions, effectively forming holes of arbitrary shapes with improved precision.
Implementation Method 1
a first optical system that includes a first prism and a second prism and receives the laser light output from a laser light source; a second optical system that includes a third prism and a fourth prism and receives the laser light from the first optical system
Implementation Method 2
a condensing optical system that receives the laser light from the second optical system and condenses the laser light to guide the condensed laser light to the workpiece
Implementation Method 3
laser light output from a laser light source
Data Source
AI summary
Provided is a laser processing apparatus provided with: a first optical system including a first prism and a second prism; a second optical system including a third prism and a fourth prism; a condensing optical system that condenses laser light to guide the condensed laser light to a workpiece; a first driving device that rotates the first prism and rotates the second prism synchronously with the first prism; a second driving device that rotates the third prism and rotates the fourth prism synchronously with the third prism; and a controller that controls the first driving device and the second driving device such that the workpiece is irradiated with the laser light while the laser light turns. The controller adjusts irradiation conditions of the laser light including an incidence position and an incidence angle of the laser light with respect to the workpiece, by adjusting a relative position between the first prism and the second prism and a relative position between the third prism and the fourth prism in a rotational direction.