Adjustable Pipe Cutter Path for Varying Outer Diameters

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Solution Overview

Problem

Conventional pipe cutting devices with fixed elastic force struggle to adjust the moving path of the cutter, leading to failure in cutting pipes with slightly different outer diameters, resulting in either the cutter sliding over or applying excessive force and deforming the pipe.

Innovation Solution

A pipe cutting device with a rotating axis, C-shaped half-bodies, arc-shaped plate adjustment screws, and an automatic cutter feeding mechanism, allowing for adjustable moving paths and pressing force, enabling precise cutting of pipes with varying diameters through the use of arc-shaped guiding plates and screws.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed elastic force mechanism is used to control the cutter, then the structure is simple, but the moving path of the cutter cannot be adjusted for pipes with different outer diameters

Engineering Contradiction:
Improveadjustability of cutter moving pathVSAvoidcomplexity of cutter feeding mechanism
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent transforms the fixed elastic force mechanism into a dynamic adjustable system by introducing arc-shaped guiding plates with adjustable positions. The cutter shaft can now move along different arc paths determined by the guiding plates' positions, allowing adaptation to pipes with different outer diameters while maintaining the elastic force mechanism's simplicity.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The guiding mechanism is segmented into multiple arc-shaped guiding plates that can be independently positioned and adjusted. This segmentation allows the system to handle different pipe diameters by selecting appropriate guiding plate configurations, providing versatility without requiring a completely different mechanism for each diameter.

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If the cutter feeding mechanism has a fixed size, then the structure is simple, but it cannot accommodate pipes with slightly different outer diameters

Engineering Contradiction:
Improvecompatibility with different pipe diametersVSAvoidease of adjusting cutter path
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The fixed-size feeding mechanism is transformed into a dynamically adjustable system through the arc-shaped guiding plates. These plates can be repositioned along the cutter shaft's path, allowing the mechanism to adapt to different pipe diameters while maintaining ease of operation through simple positional adjustments rather than complex reconfigurations.

Inventive Principle:
Principle #15Dynamics

3Manufacturing precision

If the cutter applies fixed pressing force, then the control is simple, but it either fails to cut into the pipe or applies excessive force causing deformation

Engineering Contradiction:
Improveprecision of cutting operationVSAvoidcomplexity of force control mechanism
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The fixed pressing force control is replaced with a dynamic adjustment system using arc-shaped guiding plates at different positions. By adjusting the guiding plate positions, the cutter's pressing force is automatically regulated to match different pipe diameters and material hardness, achieving precise cutting without excessive force while maintaining simple elastic force mechanism control.

Inventive Principle:
Principle #15Dynamics

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 effectively adjusts the cutter's moving path and pressing force, ensuring successful cutting of pipes with different diameters and materials, preventing deformation and ensuring accurate cutting operations.

Implementation Method 1

an elastic force generating device configured to apply a pressing force on the force transfer portion

Methodology Applied
Scientific EffectElastic force: Elasticity

Data Source

PatentUS11285551B2Pipe cutting device capable of adjusting moving path of cutter
Publication Date: 2022.03.29 LEE PIN HAO
  • US11285551B2 patent drawing
  • US11285551B2 patent drawing
  • US11285551B2 patent drawing

AI summary

A pipe cutting device includes first and second C-shaped half-bodies, a cutter disposed between the first and second C-shaped half-bodies, two wheels, an automatic cutter feeding mechanism, and arc-shaped plate adjustment screws. The automatic cutter feeding mechanism moves the cutter to perform an automatic feeding operation and is in cooperation with the two wheels to cut a pipe. The first and second C-shaped half-bodies include a first screw hole and a second screw hole respectively, the arc-shaped plate adjustment screws are locked into the first screw hole and the second screw hole respectively, to adjust a moving path, toward a location between the two wheels, of the cutter pushed by the automatic cutter feeding mechanism. Therefore, the pipe cutting device can adjust the moving path of the cutter, fine tuning to cut the pipe, and adjusting a pressing force of the cutter.