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Main Reasons for Tool Blunting
1. Enhance Tool Strength and Wear Resistance: Sharp cutting edges are prone to developing micro-cracks or chipping during use. Blunting eliminates these irregular micro-edges, improving the overall strength of the tool and reducing the risk of edge chipping.
2. Reduce Tool Wear: Blunted tool edges are more rounded, which minimizes wear caused by stress concentration during cutting, thereby extending the tool's lifespan.
3. Improve Surface Finish Quality: Blunted tools reduce surface roughness, enhancing the surface finish of the workpiece. This is particularly important for high-precision machining.
4. Reduce Cutting Resistance: Blunted edges decrease friction during cutting, improving the tool's stability and machining efficiency.
5. Enhance Machining Consistency: Blunted tools perform more consistently across different machining processes, ensuring uniform results.
Purpose of Tool Blunting
The purpose of edge blunting technology is to address the micro-defects on the cutting edge after sharpening, reducing or eliminating sharp peaks, and achieving a smooth and rounded edge. This results in a tool that is both sharp and durable.
Main Effects of Tool Blunting
1. Edge Rounding: Burrs on the cutting edge cause tool wear and result in rough workpiece surfaces. After blunting, the edge becomes extremely smooth, significantly reducing chipping and improving the surface finish of the workpiece.
2. Polishing of Chip Flutes: Uniform polishing of the tool's grooves enhances surface quality and chip evacuation performance. Smoother flutes improve chip removal, enabling higher-speed cutting.
3. Reduced Cutting Forces: Improved surface quality lowers the risk of tool-material adhesion and reduces cutting forces by up to 40%, making the cutting process smoother.
4. Post-Coating Surface Treatment: After coating, tiny protrusions may form on the tool surface, increasing roughness and friction heat during cutting, which reduces cutting speed. Blunting
