Overlapping Tip Saw Blade Structure for Stable Kerf and Chip Flow
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Solution Overview
Problem
Conventional tip saws with cemented carbide cutting blade pieces struggle to maintain a consistent cut groove width when cutting hollow work materials, leading to rough surfaces and reduced chip discharge performance due to increased blade piece density.
Innovation Solution
A disc-shaped tip saw design with support pieces disposed between cutting blade pieces, where the support pieces are thicker than the base metal and equal to or nearly equal to the cutting blade pieces, ensuring consistent cut groove width and reducing variations in blade spacing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the number of cutting blade pieces is increased to reduce blade spacing variations, then the cut surface quality improves, but the chip discharge performance deteriorates
Solution Approach 1:
The blade is segmented into cutting blade pieces made of cemented carbide attached to the blade edge portions. This segmentation allows for precise control of cut groove width while maintaining adequate spacing for chip discharge, as each cutting blade piece can be independently positioned and sized.
Solution Approach 2:
Different portions of the blade have different properties: the cutting blade pieces at the edge portions are made of hard cemented carbide for precise cutting, while the base metal provides structural support. This local differentiation allows the cutting edges to maintain consistent width for quality cuts without compromising overall blade performance.
2Manufacturing precision
If cutting blade pieces are made thicker to maintain consistent cut groove width, then the cut surface quality improves, but the blade strength and durability may be compromised
Solution Approach 1:
The blade combines cemented carbide cutting blade pieces with a base metal structure. The cemented carbide provides the necessary hardness and wear resistance for maintaining consistent cut groove width, while the base metal provides the structural strength and flexibility needed for blade durability.
Solution Approach 2:
The thicker configuration is applied locally only to the cutting blade pieces at the edge portions where precision cutting is needed, rather than increasing the thickness of the entire blade. This localized approach maintains cut groove consistency without compromising overall blade strength.
3Manufacturing precision
If the density of blade pieces is increased to reduce spacing variations, then the cut surface quality improves, but the chip discharge performance deteriorates
Solution Approach 1:
The blade is divided into discrete cutting blade pieces attached to specific edge portions, creating uniform spacing between pieces. This segmentation ensures consistent cut groove width while maintaining adequate gaps for chip discharge, avoiding the need to increase overall blade piece density.
Solution Approach 2:
The invention optimizes the parameters of cutting blade pieces including their thickness, width, and spacing to achieve uniform blade spacing variations within a controlled range. This parameter optimization allows for consistent cut quality without excessive density that would hinder chip discharge.
Data Source
AI summary
A tip saw has a disc-shape and comprises cutting blade pieces and a base metal. The cutting blade pieces are disposed on blade edges of the tip saw, and each of the cutting blade pieces extends to a reverse rotation side of the each of the cutting blade pieces along an outer side of the tip saw. Two of the cutting blade pieces adjacent to each other partially overlap in a circumferential direction along the outer side of the tip saw. The each of the cutting blade pieces has a cutting edge portion on a rotation side of the each of the cutting blade pieces and a support portion on the reverse rotation side of the each of the cutting blade pieces.