Reversible Multi-Edge Cutting Tool for Longer Wear Life
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Solution Overview
Problem
Conventional cutting tools for rotary drums or discs used in mulchers and mowers experience rapid wear and increased cutting resistance, leading to higher maintenance costs and reduced productivity due to the need for frequent replacement of dull cutting edges.
Innovation Solution
A cutting tool system featuring a tool holder with a base for mounting on a rotary drum or disc and a cutting tool with multiple selectively movable cutting edges on both sides, allowing each side to function as a leading edge, thereby extending the wear life and reducing maintenance needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If conventional cutting edges with single straight edge or v-shape edge are used, then the structure is simple and easy to manufacture, but the wear life is short and maintenance frequency increases
Solution Approach 1:
The cutting tool is divided into multiple cutting edges (at least two) instead of using a single cutting edge. Each cutting edge can be independently used until it becomes dull, then the tool can be reversed or repositioned to use the next cutting edge. This segmentation allows the cutting tool to serve multiple purposes and extend its operational life significantly.
Solution Approach 2:
The cutting tool is designed to be reversible or repositionable, allowing dynamic switching between different cutting edges. The tool holder system enables the cutting tool to be rotated or flipped to present a fresh cutting edge to the material, transforming a static single-edge tool into a dynamic multi-edge system.
2Productivity
If cutting edges are frequently replaced, then cutting resistance is maintained at optimal levels, but maintenance time and operational costs increase
Solution Approach 1:
Multiple cutting edges are pre-configured on the cutting tool during manufacturing. Before the first cutting edge becomes dull, the subsequent cutting edges are already in position and ready for use. This preliminary preparation eliminates the need for frequent tool replacements and reduces maintenance interruptions.
Solution Approach 2:
Instead of discarding the entire cutting tool when one edge becomes dull, the system recovers and continues using the same tool by switching to the next cutting edge. The tool body and mounting structure are reused, only the cutting edge functionality is rotated or replaced, reducing waste and maintenance costs.
3Duration of action of moving object
If single-sided cutting edges are used, then the tool design is simpler, but the wear life is limited to one side only
Solution Approach 1:
The cutting tool is designed with multi-functionality by incorporating cutting edges on both sides or multiple surfaces. Each side of the tool can function as a leading side with active cutting edges, allowing the tool to perform cutting operations from multiple orientations. This universal design doubles or triples the effective wear life compared to single-sided tools.
Data Source
AI summary
The present disclosure relates to a cutting tool system comprising a tool holder and a cutting tool. The tool holder includes a base for mounting onto a rotary drum or disc and a body for removably coupling to the cutting tool. The cutting tool is for size-reducing a material and has a first side and a second side. The cutting tool includes a plurality of cutting edges that are selectively moveable into and out of a cutting path of the rotary drum or disc. The first and second sides each have at least one cutting edge, such that each of the first and second sides are configured to be a leading side of the cutting tool during use. This allows the cutting tool to be rotated and/or reversed, such that a single cutting tool provides several cutting edges and increases the wear or erosion life thereof.