Multi-Chamfer Diamond Compact for Gravel Strata Impact Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing diamond compacts in diamond bits face challenges in meeting the varying impact resistance and cutting performance requirements when drilling through different strata, particularly in gravel strata, due to a single circumferential chamfer structure that fails to differentiate between cutting and side face needs.
Innovation Solution
The diamond compact features multiple sections of chamfers forming different cutting edges, including main and impact-resistant cutting edges, with a recessed flow guide cavity to direct water flow for cooling and enhance heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single circumferential chamfer structure is used on the diamond compact, then the manufacturing process is simple, but the compact cannot simultaneously meet the different impact resistance and cutting performance requirements of the cutting face and side face when drilling through complicated strata
Solution Approach 1:
The circumferential edge of the diamond compact is divided into multiple chamfer sections (first chamfer section, second chamfer section, third chamfer section, and fourth chamfer section) instead of using a single uniform chamfer. Each section has different geometric parameters, allowing different regions of the compact to serve different functions: some sections provide superior cutting performance while others provide enhanced impact resistance, enabling the compact to adapt to various strata conditions
Solution Approach 2:
Different chamfer sections are designed with specific local properties tailored to their functional requirements. The first and second chamfer sections are optimized for cutting performance with specific included angles and radial widths, while the third and fourth chamfer sections are optimized for impact resistance. This local differentiation allows each region to excel at its specific task without compromising overall compact performance
2Productivity
If the main cutting edge is designed for high cutting performance, then the cutting efficiency is improved, but the impact resistance of the cutting edge may be reduced
Solution Approach 1:
The cutting edge is segmented into multiple chamfer sections with different geometric characteristics. The first and second chamfer sections are designed with parameters optimized for cutting efficiency (specific included angles and radial widths), while the third and fourth chamfer sections are designed with parameters optimized for impact resistance. This segmentation allows the compact to achieve both high cutting efficiency and adequate impact resistance simultaneously
Solution Approach 2:
Specific local regions of the cutting edge are optimized for cutting performance while other local regions are optimized for impact resistance. The first chamfer section with its specific included angle and radial width provides efficient cutting, while the third chamfer section provides enhanced impact resistance, allowing the compact to balance cutting efficiency and durability
3Duration of action of stationary object
If a recessed flow guide cavity is added to guide water flow for cooling, then the heat management and service life are improved, but the manufacturing complexity increases
Solution Approach 1:
A recessed flow guide cavity is integrated into the diamond compact structure to guide cooling water flow directly to the cutting edge during drilling operations. The cavity includes a flow guide groove that channels water along the radial direction to the main cutting edge, providing effective cooling and heat dissipation. This hydraulic approach improves heat management and extends service life while adding minimal structural complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enhances cutting performance and side impact resistance, allowing the compact to adapt to diverse strata and prolongs its service life by improving drilling efficiency and heat management.
Implementation Method 1
a recessed flow guide cavity is provided on a top end face of the diamond composite layer to guide a water flow to the main cutting edge when a stratum is drilled so as to cool the main cutting edge
Data Source
AI summary
The present disclosure provides an impact-resistant multi-cutting-edge diamond compact, comprising a cylindrical cemented carbide substrate (102) and a diamond composite layer (101) being disposed at a top end of the cemented carbide substrate, wherein at least two sections of different chamfers (103, 104) are provided on a circumferential edge of a top end of the diamond composite layer (101), forming different cutting edges, the different cutting edges comprise at least one section of main cutting edge (103) and a section of impact-resistant cutting edge (104; 106) provided on each of two sides of the main cutting edge (103), a cutting performance of the main cutting edge (103) is better than that of the impact-resistant cutting edge (104; 106). According to the present disclosure, the compact has good cutting performance and side impact resistance on a gravel stratum, thereby prolonging the service life of the compact.