Portable Torch Rail Guide for Precision Plasma and Oxy-Fuel Cutting

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Solution Overview

Problem

Existing cutting technologies, such as single-tank oxy-fuel torches, lack the concentrated heat to effectively cut most metals, and plasma cutters, while precise, require complex setups for thick materials, limiting their portability and ease of use for precision cuts.

Innovation Solution

A portable cutting torch tool with an integrated rail follower and adjustable vertical and horizontal offsets, enabling precision linear and curved cuts using either plasma or oxy-fuel torches, with optional movement damping and remote control for enhanced stability and control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If plasma cutters are used for precise cutting, then cutting precision is improved, but device complexity and setup requirements increase

Engineering Contradiction:
Improvecutting precisionVSAvoidsetup complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent combines the plasma cutter with a rail follower system and positioning mechanisms into an integrated device. The rail follower guides the plasma cutter along predetermined paths, while adjustable positioning mechanisms allow for precise setup without complex external fixtures. This merging of functions maintains cutting precision while reducing overall system complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The rail follower acts as an intermediary component between the plasma cutter and the workpiece. It provides a simple, standardized interface that guides the cutter along precise paths without requiring complex setup of the plasma cutter itself. The rail system mediates the positioning function, allowing the plasma cutter to focus on its primary cutting function.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If oxy-fuel torches are used for cutting, then portability is improved, but cutting capability on most metals deteriorates due to insufficient heat concentration

Engineering Contradiction:
ImproveportabilityVSAvoidheat concentration
Core Design Contradiction:
Ease of operationVSTemperature

Solution Approach 1:

The patent merges the oxy-fuel torch with plasma generation capabilities and rail follower positioning into a single integrated device. This combination allows the portable oxy-fuel torch to achieve plasma-level heat concentration when needed, while retaining the portability benefits of the torch design. The rail follower system enables precise cutting paths without requiring heavy industrial equipment.

Inventive Principle:
Principle #5Merging (Combining)

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

The device allows for precise and efficient cutting of metals with improved stability and control, enabling cuts in thicker materials and complex shapes without the need for extensive setup, making it suitable for both hobbyists and industrial applications.

Implementation Method 1

A plasma cutting torch or 'plasma cutter' cuts through electrically conductive metal or alloys by generating an accelerated jet of hot plasma

Methodology Applied
Scientific EffectPlasma: Plasma

Implementation Method 2

The ionized plasma is generated via a compressed gas (oxygen, air, inert gas(es), and other gases depending on the nature of the material being cut)

Methodology Applied
Scientific EffectIonized plasma: Ionisation

Implementation Method 3

An electrical arc is formed within the stream of gas, between an electrode and the workpiece. The electrical arc ionizes some of the gas, thereby creating an electrically conductive channel of plasma

Methodology Applied
Scientific EffectElectrical arc: Electric Arc

Implementation Method 4

As electricity from the cutter torch travels down the plasma stream the electricity creates sufficient heat to melt through the workpiece

Methodology Applied
Scientific EffectJoule heating: Joule Heating

Implementation Method 5

Simultaneously, much of the high velocity plasma and compressed gas physically blow the hot molten metal away, thereby cutting through the workpiece in a metal 'riddance' process

Methodology Applied
Scientific EffectJet erosion: Jet Erosion

Implementation Method 6

The ionized plasma is generated via a compressed gas (oxygen, air, inert gas(es), and other gases depending on the nature of the material being cut), which is expelled through the nozzle at high pressure toward the workpiece

Methodology Applied
Scientific EffectCompressed gas: Compression

Data Source

PatentUS11534874B2Portable device for precision plasma and oxy-fuel torch cutting
Publication Date: 2022.12.27 PRUSEK JERRY
  • US11534874B2 patent drawing
  • US11534874B2 patent drawing
  • US11534874B2 patent drawing

AI summary

A portable device for precision plasma and oxy-fuel torch cutting is provided. Versions of an example portable cutting torch tool guide the gun of a cutting torch to make precision linear cuts or curved cuts in a metal workpiece. In an implementation, the device is a gun for a cutting torch, with an integrated rail follower and adjustable vertical and horizontal offsets from a workpiece. The cutting torch tool may use various kinds of rails for stable cuts, with optional movement damping, motorized drive, servos for vertical and horizontal offset, and remote control with user interface.