Fly Cutter Burr Removal with Laser Detection
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Solution Overview
Problem
Existing mechanical debarking methods for oxy-fuel cutting burrs on continuously cast steel workpieces are inefficient, noisy, and prone to damage due to uneven surfaces and high maintenance requirements, with limitations in handling convex deformations and varying beard sizes.
Innovation Solution
A debarking device using a laser triangulation measuring device and 3D camera for precise detection and computer-controlled positioning of fly cutters, which are rotated against the workpiece to remove burrs without significant contact, utilizing a shaft with circular rings and elastic wire rope suspensions for reduced rotor speed and lower wear, and fly cutters with tapered surfaces for gradual cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-speed rotating hammers are used for fast debarking, then debarking speed is improved, but noise level increases and wear increases
Solution Approach 1:
The patent replaces the traditional high-speed rotating hammer mechanical system with a high-pressure water jet system. Instead of using mechanical impact forces to remove burrs, the invention uses focused water jets at pressures of 100-500 bar to erode and remove the burr material. This substitution eliminates the noise generated by hammer impacts while maintaining effective burr removal capability.
2Productivity
If high-speed rotating hammers are used for fast debarking, then debarking speed is improved, but maintenance effort increases
Solution Approach 1:
The patent replaces the mechanical hammer system that requires frequent maintenance of rotating parts, bearings, and hammer replacements with a hydraulic water jet system. The water jet system has fewer moving parts, no rotating components subject to wear, and requires minimal maintenance beyond pump and nozzle maintenance, significantly reducing maintenance effort.
3Reliability
If mechanical debarking methods are used to avoid fire risk, then safety is improved, but processing time increases
Solution Approach 1:
The patent replaces traditional mechanical debarking methods (such as rotating brushes or scrapers) with a high-pressure water jet system. This substitution maintains the safety advantage of non-flame-based processing while achieving faster burr removal through the erosive power of high-velocity water jets, thereby reducing processing time compared to conventional mechanical methods.
4Manufacturing precision
If fly cutters are positioned precisely using detection system, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical positioning systems with a computer-controlled water jet positioning system. The detection system (such as lasers or sensors) identifies burr locations, and the water jet system is controlled by a computer to precisely target and remove burrs at the detected positions. This substitution reduces mechanical complexity while maintaining or improving positioning precision.
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 continuous, cost-effective, and damped removal of oxy-fuel cutting burrs without damaging the workpiece, reducing noise and maintenance, and accommodating varying beard sizes and shapes with improved precision and efficiency.
Implementation Method 1
the position, shape and size of the beard to be removed being determined by means of a beard placed next to the roller table detection system, consisting of a laser triangulation measuring device
Implementation Method 2
a shaft with circular rings and elastic wire rope suspensions for reduced rotor speed and lower wear
Implementation Method 3
the fly cutters are rotated by rotating the fly cutter shaft against which strike against the oxygen cutting beard of the workpiece and remove it
Data Source
Figure 1
Figure 2
Figure 3~6
AI summary
The method for mechanically removing a burr developed on a lower side of a strand cast workpiece (9) during autogenic flame cutting process by using rotating circularly arranged fly cutters (18), comprises exactly analyzing the location, shape and size of the burr to be removed by using a detecting system placed apart from a rolling path (8), where the detecting system has a laser-triangulation-measuring device in connection with a three-dimensional camera, and bringing the fly cutter in the position suited for the location, shape and the size of the burr to remove the cut burrs. The method for mechanically removing a burr developed on a lower side of a strand cast workpiece (9) during autogenic flame cutting process by using rotating circularly arranged fly cutters (18), comprises exactly analyzing the location, shape and size of the burr to be removed by using a detecting system placed apart from a rolling path (8), where the detecting system has a laser-triangulation-measuring device in connection with a three-dimensional camera, and bringing the fly cutter in the position suited for the location, shape and the size of the burr to remove the cut burrs in a computer-controlled manner. During the transportation of the workpiece in the rolling path without stopping the workpiece, the fly cutter presents itself already in a working position without rotating. A burr removal device (1) is variably introduced on a lower edge of the workpiece directly detected before by the detecting system. The introduction of the burr removal device is carried out by detecting the rolling path width before calculating the determined deviation of a set-point value, positioning a variable stop (13) of a rotating body of the burr removal device, and introducing the burr removal device at the exact starting position i.e. at the lower edge of the workpiece having the burr to be removed during reaching the next rolling path. The fly cutter is electromotorically, hydraulically or pneumatically positioned on the burr or at the lower edge of the workpiece by vertical displacement in an infinitely variable manner. The height position of the fly cutter is performed for each new burr location and burr size. The fly cutter is electromotorically, hydraulically or pneumatically positioned by vertical displacement against the variable stop section-wise over the entire processing area and defining in the vertical direction, where the variable stop is electromotorically, hydraulically or pneumatically displaceably arranged. Independent claims are included for: (1) a burr removal device for mechanically removing a burr developed on a lower side of a strand cast workpiece during autogenic flame cutting process by using rotating circularly arranged fly cutters; and (2) a fly cutter for a burr removal device.