Conduit Reamer Blade Geometry for Deburring and Bit Retention
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Solution Overview
Problem
Existing conduit reamers struggle with efficient deburring of cut pipe edges, particularly in terms of ease of use, pouchability, and preventing bit dislocation during handling.
Innovation Solution
A conduit reamer design featuring wide acute angles between 45 and 90 degrees for the cutting blades, a lanyard receiver positioned near the center of gravity, and a multi-purpose tool configuration with interchangeable bits and sockets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional conduit reamers with narrow cutting angles are used, then the tool structure is simple, but the deburring efficiency is poor and the blades容易 catch on material
Solution Approach 1:
The patent applies parameter changes by modifying the cutting blade angles from conventional narrow angles to wide acute angles between 45-90 degrees. This parameter change enables the blades to cut more efficiently without catching on material while maintaining a relatively simple tool structure. The specific angle range optimizes the balance between deburring effectiveness and structural simplicity.
2Volume of moving object
If the cutting blades are positioned closer together, then the tool fits better in narrow spaces, but the deburring coverage is reduced
Solution Approach 1:
The patent employs asymmetry in the blade configuration where the inner and outer blades are positioned at different radial distances from the longitudinal axis. This asymmetric arrangement allows the blades to be effectively spaced for adequate deburring coverage while maintaining overall tool compactness. The asymmetric design optimizes the balance between coverage area and tool size for fitting in narrow spaces.
Data Source
AI summary
A conduit reamer with a lanyard receiver, inner and/or outer cutting blades is provided. The lanyard receiver is located along an axis of the handle near the tool's center of gravity. For example, the lanyard receiver is located between the handle and a bit retainer near the center of gravity. In this orientation, the lanyard receiver prevents tipping of the conduit reamer and retains the bit within the bit retainer when the conduit reamer is dropped. The inner and outer cutting blades include an acute angle that is between 45 and 90 degrees to deburr an end of a conduit.