Large-Blade Battery Circular Saw for Thick Workpiece Cutting
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Solution Overview
Problem
Existing circular saws with battery-powered electric motors have poor cutting efficiency, particularly for thicker workpieces, due to their small blade diameters.
Innovation Solution
A circular saw design featuring a circular-saw blade with a diameter of 300 mm or more and 460 mm or less, combined with an electric motor and battery-mounting part, to enhance cutting efficiency for thicker workpieces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a small-diameter circular-saw blade is used in battery-powered circular saws, then the device complexity and battery weight are reduced, but the cutting efficiency for thicker workpieces deteriorates
Solution Approach 1:
The patent applies parameter changes by increasing the circular-saw blade diameter from conventional small sizes (e.g., 125 mm) to a large diameter of 300 mm or more. This parameter change enables the blade to efficiently cut thicker workpieces while the battery-mounting part design ensures adequate power supply without excessive weight increase
2Productivity
If a large-diameter circular-saw blade is used, then the cutting efficiency for thicker workpieces is improved, but the device complexity and power requirements increase
Solution Approach 1:
The battery-mounting part is designed with multi-functionality, serving both as a power supply interface and as a structural component that supports the increased blade diameter. This universal design reduces overall device complexity while enabling the use of a 300 mm or more diameter blade for efficient cutting of thick workpieces
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 increased blade diameter and sufficient electric power enable efficient cutting of thick workpieces, with improved stability and reduced user fatigue.
Implementation Method 1
an electric motor for providing rotational driving power to the circular-saw blade
Implementation Method 2
a battery-mounting part, which is configured to detachably mount a battery for supplying electric power to the electric motor
Data Source
AI summary
A circular saw includes: a rotatable circular-saw blade; an electric motor that generates rotational power for rotatably driving the circular-saw blade; and a battery-mounting part configured to detachably mount a battery that supplies electric power to the electric motor. The diameter of the circular-saw blade is 300 mm or more and 460 mm or less.