Steel Frame Torch Cutting with Reverse Feed for Complete Cuts
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Solution Overview
Problem
Conventional methods for cutting steel frames using a cutting torch are inefficient due to the time-consuming process of moving the torch along the frame's surface, which can lead to cutting defects and reduced efficiency as the torch must change orientation and position, causing temperature loss and incomplete cuts.
Innovation Solution
A method and apparatus that involve moving a cutting torch in a first feed direction along the steel frame's surface, then reversing direction in a second feed direction to complete cuts efficiently, maintaining the torch's posture and minimizing temperature loss, while using a gripping system to hold the frame and a cutting torch with a large fire port to apply oxygen for oxidation cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the cutting torch is moved along the surface of the steel frame while keeping the fire port close to the surface, then the cutting can be performed with good surface contact, but the operation time becomes excessively long
Solution Approach 1:
The patent changes the cutting approach from moving the torch along the surface (1D path following) to positioning the torch at a distance and moving it perpendicular to the surface (dimensional shift). The torch is located at a position apart from the steel frame in a direction parallel to the cutting surface, and moved in a feed direction perpendicular to the supply direction, fundamentally altering the spatial relationship and motion path.
Solution Approach 2:
Instead of moving the torch along the surface in the conventional manner, the patent inverts the approach by positioning the torch away from the surface and moving it in the opposite spatial configuration. The torch moves in a feed direction that is perpendicular to both the supply direction and the surface, effectively cutting from a reversed spatial perspective.
2Loss of time
If the cutting torch is positioned apart from the steel frame and moved in a feed direction perpendicular to the supply direction, then the operation time is significantly reduced, but cutting defects may occur in parts away from the fire port or hidden behind other portions
Solution Approach 1:
The patent implements periodic action by performing cutting in multiple passes with alternating feed directions. After completing a cut in the first feed direction, the torch reverses and performs cutting in the second feed direction opposite to the first. This periodic back-and-forth motion ensures that all portions of the steel frame, including previously hidden areas, receive adequate cutting attention.
Solution Approach 2:
The patent introduces dynamic adjustment by allowing the torch to change its feed direction during the cutting process. The system dynamically switches between the first feed direction and the second feed direction opposite thereto, adapting the cutting path to ensure complete coverage of all steel frame portions while maintaining high cutting speed.
3Manufacturing precision
If the orientation and position of the cutting torch are greatly changed to re-cut failed portions from the opposite side, then complete cutting can be achieved, but work efficiency is hindered and temperature of the heated steel frame is lowered
Solution Approach 1:
The patent employs dynamic feed direction switching to maintain cutting completeness while preserving work efficiency. Instead of physically repositioning the torch from the opposite side, the system dynamically reverses the feed direction and continues cutting in the same operational configuration, thereby maintaining torch temperature and cutting efficiency throughout the process.
Solution Approach 2:
The patent ensures continuity of useful action by maintaining the cutting operation without interruption or repositioning. The torch continues cutting in the same position and orientation, simply reversing the feed direction to address any incomplete portions, thereby avoiding temperature loss and maintaining continuous productive action throughout the entire cutting process.
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 significantly reduces cutting time, improves work efficiency, and ensures complete cuts by allowing for quick re-starts in the second direction before temperature loss, addressing the inefficiencies and defects of conventional methods.
Implementation Method 1
supplying oxygen for oxidation of the steel frame to thereby cut the steel frame along the cutting surface
Data Source
AI summary
A method and an apparatus efficiently and reliably cut a steel frame. The cutting method includes locating a cutting torch apart from the steel frame held by a holding device in a direction along a cutting surface, moving the cutting torch from a cutting start position to a first cutting end position in a first feed direction perpendicular to a supply direction along the cutting surface, while applying a flame from a fire port of the cutting torch in the supply direction and supplying cutting oxygen to thereby cut a part of the cutting surface, stopping the cutting torch at the first cutting end position and thereafter cutting an uncut part by moving the cutting torch from the first cutting end position in a second feed direction opposite to the first feed direction.