Modular Drill Bit with Detachable Head Plates
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Solution Overview
Problem
Existing drill bits for creating boreholes in insufficiently bearing subsoil are costly to produce and prone to wear, especially when designed as cast parts or assembled from complex steel components, and lack adaptability to varying soil conditions.
Innovation Solution
A modular drill bit design featuring a one-piece base plate and drill head plate configuration that can be expanded with arcuate plates, allowing for cost-effective production and adaptation to specific soil conditions, with a non-rotatable and detachable connection to the drill pipe to prevent tilting and optimize drilling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If drill bits are manufactured as cast parts or assembled from complex steel components, then they achieve the required strength and durability for drilling in insufficiently bearing subsoil, but they become costly to produce
Solution Approach 1:
The drill bit is divided into a base plate component and one or more drill head plates that can be assembled together. This segmentation allows for simpler, more cost-effective manufacturing of individual components while maintaining the overall strength and durability required for drilling in challenging subsoil conditions.
Solution Approach 2:
The base plate and drill head plate(s) are combined through a detachable connection to form the complete drill bit assembly. This merging of components achieves the required structural integrity and durability while enabling more economical production compared to complex cast parts.
2Reliability
If drill bits are designed as complex cast parts, then they achieve the required robustness for high stress conditions, but they become expensive to manufacture
Solution Approach 1:
The drill bit is segmented into a base plate and drill head plate(s) that can be manufactured separately using simpler, more cost-effective processes. This segmentation maintains robustness through proper connection design while reducing manufacturing complexity and cost.
Solution Approach 2:
Different components (base plate and drill head plates) can be manufactured with locally optimized properties and processes suitable to their specific functional requirements, rather than requiring the entire drill bit to be produced as a complex cast part. This allows for cost-effective manufacturing while maintaining robustness where needed.
3Strength
If drill bits are designed as fixed complex structures, then they achieve required strength, but they lack adaptability to varying soil conditions
Solution Approach 1:
The drill bit is segmented into a base plate and detachable drill head plate(s), enabling configuration changes to adapt to different soil conditions while maintaining structural strength through proper connection design.
Solution Approach 2:
The detachable connection between the base plate and drill head plate(s) enables dynamic reconfiguration of the drill bit assembly to suit varying soil conditions, transforming a static structure into an adaptable system that maintains strength while providing versatility.
4Ease of manufacture
If drill bits use simple plate-like cast parts, then they reduce manufacturing cost, but they may lack the required strength and durability
Solution Approach 1:
Simple plate-like components (base plate and drill head plates) are merged through a detachable connection to create an assembly that achieves the required strength and durability. The combined structure provides the necessary robustness while maintaining cost-effective manufacturing of individual simple components.
Solution Approach 2:
The drill bit uses a composite structure combining base plate and drill head plate components that work together to achieve required strength and durability. This composite approach allows simple, cost-effective individual components to combine into a robust overall structure.
5Productivity
If drill bits are designed as asymmetrical shapes, then they improve drilling performance in specific conditions, but they become more expensive to manufacture as castings
Solution Approach 1:
The asymmetrical drill bit design is segmented into a base plate and drill head plate(s) that can be manufactured separately using simpler processes. This segmentation reduces the manufacturing cost of asymmetrical shapes compared to complex castings while maintaining the drilling performance benefits of the asymmetrical configuration.
Solution Approach 2:
The drill head plate(s) are designed with asymmetrical shapes optimized for specific drilling conditions. The detachable connection to the base plate allows these asymmetrical components to be manufactured more economically than as integral castings, maintaining drilling performance while reducing cost.
Data Source
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AI summary
Drill bit (1) for a drilling device for creating a borehole in a subsoil, wherein the drill bit (1) can be placed on a drill pipe (5) of the drilling device and forms a detachable connection secured against rotation, and the drill bit (1) comprises a base plate (3) and at least one drill head plate (4) arranged on the base plate (3) and extending substantially perpendicular to the base plate (3). Furthermore, the drill head plate (4) and the base plate (3) form a one-piece drill head basic shape (2), which is tapered to a point in a region facing away from the base plate (3), and which comprises at least one arcuate plate (7) which is designed such that its surface forms parts of helical surfaces during drilling.