Plasma Torch Horizontal Movement for Piercing Aperture Control
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Solution Overview
Problem
The plasma cutting method faces inefficiencies due to the formation of a distorted piercing aperture and the accumulation of molten metal dross, which reduces throughput yield by requiring wider intervals between cutout members and complicating the torch's construction, increasing costs.
Innovation Solution
The method involves forming the piercing aperture by moving the plasma torch horizontally while maintaining it at a first height, allowing controlled scattering of molten metal and reducing dross attachment, thereby optimizing the piercing step and improving throughput yield without the need for tilting the torch or additional nozzle mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the plasma torch is positioned at a fixed piercing point to form a piercing aperture, then the piercing aperture is formed, but the aperture becomes distorted and larger than necessary, requiring wider intervals between cutout members
Solution Approach 1:
The patent applies the dynamics principle by transitioning from a fixed torch position to a moving torch position during the piercing process. The torch moves in the horizontal direction while forming the piercing aperture, which controls the scattering direction of molten metal and prevents excessive dross attachment, thereby improving aperture precision without requiring wider intervals between cutout members
Solution Approach 2:
The patent applies parameter changes by modifying the torch position parameter during piercing. By changing the horizontal position of the torch from a fixed point to a moving position, the scattering direction of molten metal is controlled, which resolves the issue of distorted and oversized piercing apertures while maintaining high productivity
2Manufacturing precision
If the plasma torch is tilted or additional nozzle mechanisms are added to control molten metal scattering, then dross attachment is reduced, but the device construction becomes complicated and costs increase
Solution Approach 1:
The patent applies the taking out principle by removing the need for complex torch tilting mechanisms or additional nozzle components. Instead, the invention extracts the essential function of controlling molten metal scattering by simply moving the torch horizontally, which achieves dross attachment control without complicating the device construction
Solution Approach 2:
The patent applies mechanics substitution by replacing the mechanical tilting system or additional nozzle mechanisms with a simpler horizontal movement system. The torch is moved in the horizontal direction to control scattering, substituting complex mechanical tilting arrangements with a more straightforward movement mechanism
3Reliability
If a long incision part is provided as a run-up zone for stable cutting, then cutting stability is improved, but the interval between cutout members must be increased, reducing throughput yield
Solution Approach 1:
The patent applies preliminary action by performing the piercing operation with horizontal torch movement before the main cutting process. This preliminary piercing action creates a controlled aperture with minimal dross attachment, which eliminates the need for an extended run-up zone, thereby allowing shorter intervals between cutout members while maintaining cutting stability
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 reduces the size of the piercing aperture and dross attachment, allowing for closer placement of cutout members, enhancing throughput yield and simplifying the plasma cutting device's construction, thus improving efficiency and reducing costs.
Implementation Method 1
a plasma arc to be generated from a plasma torch
Implementation Method 2
the plasma jet penetrates through the plate blank from the front surface to the rear surface
Implementation Method 3
a material, produced as a result of coagulation of a molten metal that has been melted and spouted until the plasma jet penetrates through the plate blank
Data Source
AI summary
A plurality of cutout members are cut out from a plate blank by a plasma arc generated from a plasma torch by a method including a piercing step and a cutting step. In the piercing step, an aperture is formed on an outer peripheral side of a cutout member by maintaining the plasma torch at a first height from the plate blank on the outer peripheral side of the cutout member while the plasma arc is generated from the plasma torch and by moving the plasma torch relative to the plate blank in a horizontal direction. In the cutting step, a continuous cutting groove is formed along an outer contour of the cutout member by setting the plasma torch at a second height lower than the first height and by moving the plasma torch in the horizontal direction along an incision part and a processing line continuing to the incision part.