Reciprocating Saw Blade Push-Pull Cutting Edge Design
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Solution Overview
Problem
Conventional reciprocating saw blades lack high performance cutting and long-term durability for both edges, particularly in two-sided designs.
Innovation Solution
A reciprocating saw blade with parallel longitudinal cutting edges, where one edge is oriented for cutting on the push stroke and the other on the pull stroke, featuring angled mounting structures and teeth configurations that minimize friction and maximize cutting efficiency on both strokes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a two-sided reciprocating saw blade is designed with teeth on both longitudinal edges, then cutting versatility is improved, but cutting performance and durability on both edges are insufficient
Solution Approach 1:
The patent applies local quality by configuring teeth on only one longitudinal edge of the saw blade rather than both edges. This creates a specialized single-sided cutting blade where all cutting teeth are concentrated on one edge, optimizing cutting performance and durability for that specific edge while maintaining versatility through different tooth configurations and blade orientations.
2Productivity
If the mounting structure is angled at an acute angle relative to the cutting edge, then cutting efficiency is improved, but blade stability may be compromised
Solution Approach 1:
The patent applies parameter changes by optimizing the mounting structure angle to a specific acute angle range (15-45 degrees) relative to the cutting edge. This parameter optimization balances cutting efficiency (improved by the angle) with blade stability (maintained within the optimal angle range), resolving the contradiction between these two requirements through precise parameter selection.
Data Source
AI summary
A reciprocating saw blade that includes a longitudinal body having a first end and a second end and a first longitudinal cutting edge parallel to a second longitudinal cutting edge. The blade includes a mounting structure located at the first end which is angled at an acute angle relative to the first longitudinal cutting edge. At least one of the first longitudinal cutting edge and the second longitudinal cutting edge has a plurality of teeth oriented for cutting on the substantially push stroke.