Drill Cutting Body Cutouts for Rough Holes and Longer Wear Life
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Solution Overview
Problem
Existing drilling tools lack the ability to produce holes with increased roughness and simultaneously maintain high wear resistance, leading to reduced service life and efficiency.
Innovation Solution
A cutting body with radially inwardly directed cutouts having three open sides is integrated into the drilling tool, designed to increase hole roughness and wear resistance, featuring a carbide construction and specific cutting element angles, and a bonded connection to the conveyor coil for enhanced durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional drilling tools are used, then the drilling process is simple, but the holes produced have low roughness and the cutting body wears quickly
Solution Approach 1:
The cutting body is segmented by introducing cutouts with three open sides on the side faces, dividing the continuous surface into distinct regions that create specific roughness patterns on the hole wall while maintaining structural integrity of the cutting body
Solution Approach 2:
The cutouts are positioned at specific locations on the side faces of the cutting body, creating localized roughness features only where needed on the hole wall, while other regions maintain smooth surfaces for optimal cutting performance and wear resistance
2Reliability
If the cutting body is made with high wear resistance material, then service life is extended, but the ability to produce increased hole roughness is reduced
Solution Approach 1:
The solid carbide cutting body is divided by cutouts that create roughness features without compromising the overall structural strength and wear resistance of the carbide material
Solution Approach 2:
The cutouts with three open sides create asymmetric patterns on the side faces, generating specific roughness characteristics on the hole wall while the carbide material maintains symmetric wear resistance properties
3Manufacturing precision
If cutouts are added to the cutting body to increase hole roughness, then surface quality is improved, but the structural integrity and strength are reduced
Solution Approach 1:
The cutouts are designed in advance with specific geometries (three open sides) that preemptively create the desired roughness effect while maintaining sufficient material strength during the drilling operation
Solution Approach 2:
The dimensions, depth, and configuration of the cutouts are optimized to achieve the desired roughness level while maintaining the structural strength of the cutting body within acceptable limits
Data Source
AI summary
A cutting body for a drilling tool has a center axis, at least one cutting element with at least one cutting edge, and at least one side face. The at least one side face has at least one radially inwardly directed cutout, which is designed to produce a drilled hole having an increased roughness, the cutout having precisely three open sides.