Laser Beam Cutting and Edge Finishing for Coated Metal Workpieces
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Solution Overview
Problem
The production of metallic workpiece parts through laser cutting is inefficient due to the need for extensive mechanical finishing, oxidation issues, and the loss of coatings at cut edges, leading to increased time, cost, and manual labor in the machining process.
Innovation Solution
A process where a plate-shaped or tubular workpiece is partially cut using a processing beam with adjustable power density for both cutting and finishing, allowing for automated, high-quality production by creating a cutting gap along a contour line and subsequently finishing the workpiece in a non-joining and non-separating manner, eliminating the need for separate mechanical finishing steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If laser cutting is used to cut workpiece parts from plate-shaped or tubular metallic workpieces, then automated production with high precision is enabled, but extensive mechanical finishing is required for cut edges
Solution Approach 1:
The patent combines the cutting process and finishing process into a single integrated operation. The laser beam performs both cutting (separating the workpiece along the cutting line) and finishing (treating the cut edges) simultaneously, eliminating the need for separate mechanical finishing steps and reducing overall production time
Solution Approach 2:
The laser beam is used for multiple functions: it acts as both a cutting tool (creating the cutting gap) and a finishing tool (treating the cut edges). This multi-functionality reduces the number of required processing steps and equipment, thereby improving manufacturing efficiency
2Manufacturing precision
If mechanical finishing is performed on cut edges to remove burrs and oxidation, then cut edge quality is improved, but production time and costs increase
Solution Approach 1:
The cutting and finishing operations are merged into a single simultaneous process performed by the laser beam, eliminating the sequential time required for separate mechanical finishing operations while maintaining high cut edge quality
Solution Approach 2:
The patent replaces mechanical finishing methods (such as grinding or milling) with laser-based finishing. The laser beam treats the cut edges through thermal processing, removing oxidation and smoothing surfaces without requiring mechanical contact tools, thereby reducing production time
3Manufacturing precision
If manual finishing is carried out on cut edges, then high quality results are achieved, but the process becomes personnel-intensive and cost-intensive
Solution Approach 1:
The patent replaces manual mechanical finishing with an automated laser processing system. The laser beam automatically treats the cut edges following the cutting path, eliminating the need for manual intervention while maintaining consistent high quality results
Solution Approach 2:
The laser processing system performs both cutting and finishing autonomously without requiring separate manual operations. The same laser beam that cuts the workpiece automatically proceeds to treat the cut edges, making the system self-sufficient and highly automated
4Object-affected harmful factors
If coating is applied to coated workpieces before cutting, then surface protection is maintained, but coating is lost in the cutting gap area requiring recoating
Solution Approach 1:
The patent applies a protective coating to the workpiece before the laser cutting process. This preliminary coating prevents oxidation and damage to the workpiece surface during cutting, and the same coating remains intact on the cut edges since the laser processing occurs in an controlled atmosphere, eliminating the need for subsequent recoating
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 process enables faster, more economical, and high-quality production of workpiece parts by integrating cutting and finishing in a single automated step, reducing manual labor and costs while maintaining precision and quality.
Implementation Method 1
workpiece parts are cut out of a plate-shaped or tubular metallic workpiece along respective cutting lines by means of the laser beam
Implementation Method 2
the generation of a cutting gap in a workpiece is effected by a cutting beam (thermal cutting)
Implementation Method 3
the generation of a cutting gap in a workpiece is effected by a cutting beam (thermal cutting), for example laser cutting or flame cutting
Data Source
AI summary
Methods, devices, and systems for beam processing of plate-shaped or tubular workpieces are provided. In one aspect, a method includes: generating at least one section of a cutting gap cutting through the workpiece along a cutting line corresponding to at least part of a contour of a workpiece part to be produced from the workpiece by a processing beam, and performing at least one non-joining and non-cutting finishing treatment of the workpiece with a partially cut-out workpiece part at least in one section of at least one finishing zone by the processing beam, the finishing zone extending along the cutting line.