Adjustable Pipe Cutting Assembly 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™ machines, often result in non-level cuts due to slipping chains or limited arm travel, especially when dealing with off-vertical or deformed 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 and vertical adjustments of the cutting torch relative to the pipe.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a Sawyer Quick Set pipe cutting machine with a pivotable arm is used, then the pipe can be cut level, but the arm does not provide sufficient travel to position the cutting tip close enough to the pipe when cutting deformed or off-vertical pipes
Solution Approach 1:
The cutting assembly uses a telescopic arm with extendable segments that can dynamically adjust their length during operation. The arm includes an inner segment and an outer segment that can extend relative to each other, allowing the cutting tip to reach closer to the pipe surface when needed, thereby resolving the contradiction between maintaining cut quality and having sufficient travel distance
Solution Approach 2:
The invention adds a radial extension dimension to the arm structure by incorporating a radially extending segment that can protrude outward from the main arm body. This additional dimensional freedom allows the cutting tip to access positions that would be unreachable with a simple pivotable arm, enabling close contact with the pipe for high-quality cuts
2Productivity
If an oxy pipe cutter with a chain or angle grinder is used, then the pipe can be cut, but the chain is prone to slipping resulting in non-level cuts and cutting discs are prone to frequent failure
Solution Approach 1:
The invention replaces the unreliable mechanical cutting methods (chains and cutting discs) with a thermal cutting process using a cutting torch. The torch uses a controlled flame to melt and sever the pipe material, eliminating the mechanical slipping and disc failure problems while maintaining high cutting efficiency
Solution Approach 2:
The cutting torch system allows for precise control of thermal parameters (flame temperature, heat input rate) to optimize the cutting process. By adjusting these parameters, the system achieves reliable cuts through deformed or off-vertical pipes without the mechanical reliability issues inherent in chain and disc-based systems
3Device complexity
If a pivotable arm with limited travel is used, then the device structure is simple, but the cutting tip cannot be positioned close enough to the pipe for quality cuts on deformed or off-vertical pipes
Solution Approach 1:
The arm is divided into multiple separable segments (inner segment, outer segment, radially extending segment) that can independently adjust their positions and lengths. This segmentation allows the arm to achieve complex positioning capabilities while maintaining relative structural simplicity, as each segment can be adjusted independently to reach the required cutting position on deformed or off-vertical pipes
Data Source
AI summary
A pipe cutting assembly and method of use thereof for cutting level vertical pipes is provided. 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.