Plasma Torch Positioning with Five-Axis Tilt for Bevel Cutting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing plasma arc torch positioning systems lack the necessary precision to achieve even kerfs and beveled cuts, as they are limited to mutually orthogonal axes, resulting in uneven edges and an inability to effectively cut work pieces with angled bevels.
Innovation Solution
A positioning apparatus with five degrees of freedom, including a gantry with a traveling beam, a carriage, and a turret that allows the plasma arc torch to be tilted at specific angles relative to the work piece, enabling precise control and orientation for cutting complex shapes and beveled edges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a positioning system with mutually orthogonal X, Y, and Z-axes is used, then the system structure is simple, but the cutting precision and ability to produce even kerfs and beveled cuts deteriorates
Solution Approach 1:
The patent adds rotational degrees of freedom to the positioning system, transforming it from a standard three-axis orthogonal system to a five-axis system. The torch can now rotate about two different axes (first and second rotational axes), enabling it to achieve angular orientations that compensate for kerf angles and create beveled cuts. This dimensional enhancement allows the torch to approach the workpiece from multiple angles, producing even kerfs and precise beveled edges that were impossible with orthogonal axes alone.
Solution Approach 2:
The positioning system incorporates dynamic rotational capabilities through two independent rotational axes. The torch assembly can dynamically adjust its orientation angle during cutting operations, allowing real-time compensation for varying kerf angles and workpiece geometries. This dynamic adjustment enables the system to maintain optimal cutting angles throughout the process, improving edge quality and cutting precision without requiring complex manual intervention.
2Adaptability or versatility
If a positioning system with mutually orthogonal axes is used, then the device complexity is low, but the ability to cut beveled edges and compensate for kerf angles deteriorates
Solution Approach 1:
By introducing two rotational axes in addition to the three orthogonal translation axes, the system gains the ability to orient the torch at various angles relative to the workpiece. This enables cutting of complex geometries including beveled edges, angled surfaces, and three-dimensional contours that cannot be achieved with orthogonal axes alone. The enhanced adaptability allows a single positioning system to handle diverse cutting applications.
Solution Approach 2:
The five-axis positioning system serves multiple functions: it performs standard orthogonal cutting, compensates for kerf angles by rotating the torch, and creates beveled edges through controlled angular positioning. The system can adapt to different workpiece geometries and cutting requirements using the same apparatus, eliminating the need for separate specialized equipment for different cutting operations.
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 accurate cutting of various shapes, including circular and beveled edges, by allowing the torch to be positioned at angles between 1 and 4 degrees from perpendicular, resulting in a kerf edge that is perpendicular to the work piece surface, thereby improving cutting precision and edge quality.
Implementation Method 1
The torch produces the plasma arc, which is a constricted ionized jet of a plasma gas with high temperature and high momentum
Implementation Method 2
The torch produces the plasma arc, which is a constricted ionized jet of a plasma gas
Implementation Method 3
The power supply provides the electrical current necessary to generate the plasma arc
Implementation Method 4
The power supply also powers a cooling system for cooling the torch
Implementation Method 5
passages for cooling and arc control fluids
Data Source
AI summary
A method of operating a plasma arc torch system includes placing a work piece to be cut on a table of the plasma arc torch system, wherein at least a portion of the work piece has a planer surface facing away from the table. A plasma arc torch is positioned adjacent the planer surface of the work piece using a positioning apparatus, wherein the positioning apparatus has at least five degrees of freedom about which it can move the plasma arc torch relative the work piece for cutting the work piece on the table. The method further includes angling the torch relative the planer surface of the work piece such that the torch is held at an angle of between about 1 and about 4 degrees from perpendicular with the planer surface to back burn a produced kerf such that a kerf edge is perpendicular relative the planer surface of the work piece. Additionally, the planer surface of the work piece is calculated by contacting the work piece with the torch at least three times.