Arc-Shaped Oscillating Saw Blade With Variable Tooth Spacing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional oscillating saw blades with uniform tooth spacing and linear sawtooth arrangements experience poor chip removal, heat dissipation, and cutting efficiency, leading to reduced service life and surface quality.
Innovation Solution
An arc-shaped oscillating saw blade with varying tooth spacing, transitioning from dense to sparse, optimizing the tooth arrangement to reduce cutting resistance, improve cutting speed, and enhance heat dissipation and surface smoothness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If uniform tooth spacing is used, then manufacturing is simple, but cutting resistance is high and cutting efficiency is poor
Solution Approach 1:
The patent applies local quality by varying the tooth spacing along the arc-shaped cutting edge. Different sections of the blade have different tooth densities: denser teeth at certain positions for smooth cutting, sparser teeth at other positions for reduced resistance and improved chip removal. This non-uniform distribution optimizes cutting performance across different regions of the blade.
Solution Approach 2:
The patent changes the geometric parameter of tooth spacing from uniform to non-uniform distribution. The tooth spacing is specifically designed to vary along the arc, with the distance between adjacent teeth changing systematically from the center toward the ends of the cutting edge, thereby optimizing cutting efficiency and reducing resistance.
2Manufacturing precision
If dense tooth arrangement is used, then cutting surface smoothness is improved, but cutting speed decreases
Solution Approach 1:
The patent applies local quality by creating regions of different tooth densities along the cutting edge. Dense tooth arrangements are positioned where smooth cutting surfaces are needed, while sparser arrangements are positioned where high cutting speed and chip removal are prioritized. This spatial variation in tooth density allows simultaneous optimization of both smoothness and speed.
Solution Approach 2:
The cutting edge is segmented into multiple zones with different tooth spacing characteristics. By dividing the continuous cutting edge into discrete segments with varying tooth densities, the blade can perform different cutting functions in different regions, balancing surface quality and cutting speed requirements.
3Device complexity
If linear sawtooth arrangement is used, then structure is simple, but chip removal and heat dissipation are poor
Solution Approach 1:
The patent transitions from a linear sawtooth arrangement to an arc-shaped configuration. The cutting edge follows a curved path rather than a straight line, which improves chip ejection by directing chips away from the cutting zone and enhances heat dissipation through better exposure to air flow and cooling mechanisms. This curvature optimization maintains structural simplicity while significantly improving thermal and chip management.
Solution Approach 2:
The patent moves the sawtooth arrangement from a one-dimensional linear configuration to a two-dimensional arc-shaped configuration. This dimensional change allows the cutting edge to better conform to the workpiece geometry, improve chip flow patterns, and enhance heat dissipation efficiency without substantially increasing structural complexity.
4Productivity
If arc-shaped tooth distribution is used, then cutting resistance is reduced and cutting speed is improved, but tooth spacing control becomes more complex
Solution Approach 1:
The patent systematically varies the tooth spacing parameter along the arc-shaped cutting edge according to a defined pattern. The spacing changes progressively from the center toward the ends, following a controlled gradient that optimizes cutting performance while maintaining manufacturability through systematic parameter variation.
Data Source
AI summary
An arc-shaped oscillating saw blade with sparse and dense teeth and an oscillating saw are provided. The arc-shaped oscillating saw blade with sparse and dense teeth includes a cutting end composed of a plurality of sawteeth distributed in an arc shape, and a tooth spacing between adjacent sawteeth gradually increases from a middle position to positions at two sides of the cutting end, thus forming a sawtooth arrangement structure with dense sawteeth at a middle and sparse sawteeth at two sides. With a tooth structure with arrangement of proper tooth density gradient, a contact area between the saw blade and a material in the cutting process can be reduced, so that cutting resistance can be reduced. Arc-shaped tooth distribution facilitates improving of the cutting accuracy and surface smoothness, reduces cutting errors and surface defects, reduces impact and vibration in the cutting process, and further improves the cutting accuracy.