Pivoting Pipe Profile Cutter for Variable Radius Cuts

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Solution Overview

Problem

Existing profile cutting tools require frequent changes of hole saws to cut different radial profiles in pipes, making the process time-consuming and inefficient.

Innovation Solution

A profile cutting tool with a pivotable frame and a workpiece cutting assembly that allows the cutter to move along an arcuate profile cutting path, enabling the cutting of various radii without changing the cutter, and includes features like a clamp, guide slots, and a motor for precise cutting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a hole saw is used to cut radial profiles in pipes, then the cutting operation can be performed, but the cutter must be changed frequently to cut different radial profiles

Engineering Contradiction:

Improveability to cut different radial profilesVSAvoidtime required to change hole saws

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The invention applies the dynamics principle by making the cutting system adjustable rather than fixed. The guide bracket can be positioned at different locations on the pivotable frame, and the pivotable frame itself can be rotated to different angles, allowing the cutter to follow arcuate paths with different radii. This dynamic adjustability eliminates the need to change the hole saw for different profile radii, resolving the contradiction between versatility and time loss.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The invention embodies universality by designing a single hole saw that can perform multiple cutting functions by adjusting its path. The pivotable frame with adjustable guide brackets allows one cutter to create profiles matching different pipe radii, making the cutting system universal rather than requiring specialized tools for each profile type.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If a fixed radius hole saw is used, then the cutting path is simple, but the cutter cannot adapt to different pipe radii

Engineering Contradiction:

Improveability to match different pipe radiiVSAvoidcomplexity of cutting path mechanism

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The invention applies segmentation by dividing the cutting system into independent adjustable components: the pivotable frame, the guide bracket, and the hole saw assembly. Each component can be independently positioned or adjusted, allowing complex adaptability to be achieved through simple, modular adjustments rather than a complex integrated mechanism.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20230381867A1Profile cutting tool

Publication Date: 2023.11.30 BLACK & DECKER CORP

AI summary

A profile cutting tool includes a base, a clamp mounted to the base configured to hold an elongate workpiece, a pivotable frame pivotally mounted to the base, and a workpiece cutting assembly mounted to the pivotable frame and comprising a cutter configured to cut the elongate workpiece held in the clamp. When the pivotable frame pivots with respect to the base, the cutter is configured to move along an arcuate profile cutting path having a first radius.