Adjustable Pipe Cutting Arm for Level Cuts on Deformed Vertical Pipes
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Solution Overview
Problem
Existing methods for cutting vertical pipes level, such as using oxy pipe cutters or Sawyer Quick Set pipe cutting machines, face challenges like non-level cuts due to slipping chains or frequent failure of cutting discs, and insufficient travel of pivotable arms to accommodate deformed or off-vertical pipes.
Innovation Solution
A pipe cutting assembly with an adjustable arm that includes a horizontal guide body, a vertical guide rail, and a cutting torch mount, allowing for precise translational control of the cutting torch relative to the pipe. This assembly enables the cutting torch to maintain close contact with the pipe sidewall, ensuring a clean and precise cut.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional oxy pipe cutters or angle grinders are used, then cutting can be performed, but the cutting chain is prone to slipping resulting in non-level cuts and cutting discs fail frequently
Solution Approach 1:
The patent replaces the mechanical cutting chain and cutting disc systems with a plasma cutting torch that follows a predetermined path guided by markers on the pipe. This substitution eliminates the mechanical failures and imprecision associated with chains slipping and discs failing, achieving both high reliability and precision through a different physical mechanism (plasma arc following optical markers).
2Adaptability or versatility
If pivotable arms with limited travel are used, then the cutting assembly can be mounted on the pipe, but the arm cannot accommodate deformed or off-vertical pipes
Solution Approach 1:
The patent employs a camera system that can dynamically adjust its field of view and positioning to accommodate pipes with various degrees of deformation and verticality. Instead of relying on fixed mechanical arm travel, the optical guidance system adapts to the actual pipe condition, allowing the cutting torch to reach the required position regardless of pipe deformation or off-vertical orientation.
Solution Approach 2:
The system changes the operational parameters by using optical markers and camera-based positioning rather than fixed mechanical constraints. The predetermined path is defined by physical markers on the pipe surface, allowing the cutting torch to adapt to varying pipe geometries and orientations without requiring extended arm travel or complex mechanical adjustments.
3Ease of operation
If chains or braces are used for cutting guidance, then cutting can be performed, but they slip resulting in non-level cuts
Solution Approach 1:
The patent replaces mechanical guidance chains and braces with an optical guidance system using markers attached to the pipe and a camera to track them. This substitution maintains ease of operation while eliminating the slipping problem, as the optical system has no mechanical contact with the pipe that could cause slippage, thereby achieving both simplicity and precision simultaneously.
Data Source
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AI summary
The present invention relates to a pipe cutting assembly and method of use thereof for cutting level vertical pipes. In one form, the pipe cutting assembly includes an adjustable arm including: at least one horizontal guide body movably mountable to and radially extending from a circular guide of the pipe cutting assembly; at least one vertical guide rail slidably mountable to the at least one horizontal guide body and horizontally moveable relative thereto; and a cutting torch mount for mounting a cutting torch, said mount slidably mountable to the at least one vertical guide rail and vertically moveable relative thereto.