scholarly journals Laser Cutting Head for High-Brightness Lasers

2016 ◽  
Vol 13 (5) ◽  
pp. 19-21 ◽  
Author(s):  
Detlev Wolff ◽  
Jean-Baptiste Karam ◽  
Christine Groß
Keyword(s):  
Laser Cutting ◽  
High Brightness ◽  
Cutting Head

Process Optimization of 3D Optical Fiber Laser Cutting Robot for Press Hardening of UHSS

2013 ◽  
Vol 753-755 ◽  
pp. 2033-2036 ◽  
Author(s):  
Hui Qiang Liu ◽  
Yi Sheng Zhang ◽  
Pei Xing Liu
Keyword(s):  
Laser Cutting ◽  
3D Model ◽  
Complex Structure ◽  
High Strength ◽  
High Energy ◽  
Entry Point ◽  
Press Hardening ◽  
Energy Beam ◽  
Cutting Head ◽  
Offline Programming

The hot forming parts of high strength steel are difficult to cut with the presses and the traditional high-energy beam due to its high tensile strength which can be up to 1500Mpa and its complex structure. And the 3D laser cutting is an effective way to solve the problem. However some problems in the laser process affect the efficiency and quality seriously, including interference between the robot arms and the cutting head with the untrimmed parts, difficulty in determining the entry point and over burning etc. In this research three measures are taken to cut the anti-collision beam, including using photogrammetric technology to get its uncutted 3D model for offline programming to avoid interference, selecting appropriate entry point to trim without interrupt, amending normals and adjusting the process parameters at corners to prevent over burning. The results show that the efficiency and quality are improved and a creative new offline programming method is put forward.

Experimental Determination of the Focal Length of a Laser Beam from the Output Nozzle of a Laser Cutting Head

2017 ◽  
Vol 756 ◽  
pp. 71-79
Author(s):  
Martin Lachman ◽  
Jiří Šafka
Keyword(s):  
Laser Beam ◽  
Laser Cutting ◽  
Focal Point ◽  
Focal Length ◽  
Cutting Speed ◽  
Vital Role ◽  
Fibre Laser ◽  
Cutting Head ◽  
Industrial Operations

Laser technologies are considered to be unconventional technologies. Laser cutting is one of the most popular industrial operations that use a laser beam. Fibre lasers are most commonly used for cutting metallic materials. The aim of this paper is to experimentally demonstrate a procedure for determining the focal length of a laser beam from the output of the cutting head of a JK400FL fibre laser. Along with other factors, the correct position of the focal point of a laser beam cutting materials, plays a vital role in the quality of the cut and also in determining the cutting speed. It is possible to use a higher cutting speed of the laser machine, without compromising the quality of the cut.

scholarly journals Influence of Process Parameters in Laser Piercing

2019 ◽  
Vol 9 (16) ◽  
pp. 3231 ◽  
Author(s):  
Sonia M. Garcia ◽  
Joana Ramos ◽  
Aitzol Lamikiz ◽  
Jordi Figueras
Keyword(s):  
Stainless Steel ◽  
Mild Steel ◽  
Process Parameters ◽  
Laser Cutting ◽  
Influence Of Process Parameters ◽  
Cutting Head ◽  
Parameter Values ◽  
The Relationship

This work addresses the analysis of the influence of process parameters in laser piercing for mild steel, stainless steel, and aluminum thick sheets, carried out by the monitorization of the signal with a photodiode installed coaxially in the cutting head. The sensor captures the infrared or visible signal emitted during the piercing. The relationship between the intensity of the signal and the parameter values was analyzed, distinguishing between soft and fast piercings. The results permit the optimization of the piercing strategy with a reduction of 25% in time and the possibility of establishing a threshold to control the piercing process. This study reveals the importance of knowing parameter dependencies with the process results and highlights the potential of monitorization systems in laser cutting to improve the piercing duration and avoid wasting time during production.

Applications of a novel supersonic laser cutting head

2008 ◽  
Author(s):  
J. Pou ◽  
A. Riveiro ◽  
F. Quintero ◽  
F. Lusquiños ◽  
R. Comesaña
Keyword(s):  
Laser Cutting ◽  
Cutting Head

The Geometry Errors Analysis of Laser Cutting Head

2014 ◽  
Vol 621 ◽  
pp. 94-100
Author(s):  
Shou Chong Fu ◽  
Hong Zhi Zhang ◽  
Zhi Xin Yan ◽  
Yang Wang
Keyword(s):  
Laser Cutting ◽  
Probabilistic Method ◽  
Body System ◽  
Positional Accuracy ◽  
Error Budget ◽  
Cutting Head ◽  
Cutting Machine ◽  
Multi Body ◽  
Geometry Error ◽  
Errors Analysis

In order to analyze the positional accuracy of the key component of 5-DOF laser cutting machine–laser cutting head a geometry error model was established based on the theory of multi-body system kinematics. The factors resulted in the geometry errors were analyzed and the geometry error of the laser cutting head was computed by the probabilistic method of error budget. The result of the computation gives the evidence that the positional accuracy of the laser cutting head satisfy the requirement of the design.

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