Rock Chiseling Drill Head With Inclined Intake Ducts
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Solution Overview
Problem
Conventional drills for chiseling machining of rock lack efficient mechanisms for debris removal and transportation, leading to reduced degradation power and potential radial deflections of shock waves, which affect drilling efficiency.
Innovation Solution
A drill design featuring a drill head with inclined suction channels, a pedestal with embedded cutting edges made of sintered tungsten carbide, and a hollow shaft with a conveyor channel, allowing for axial alignment and efficient removal of debris through suction openings, minimizing radial deflections and enhancing degradation power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional drills without suction channels are used, then the structure is simpler, but debris removal efficiency is poor and radial deflections occur
Solution Approach 1:
The suction channels are nested within the hollow shaft of the drill, utilizing the internal cavity space. The channels are integrated into the shaft wall structure, allowing debris removal functionality to be embedded within the existing drill geometry without adding external components.
Solution Approach 2:
The hollow shaft serves multiple functions: it provides structural support for the drill, contains the suction channels for debris removal, and acts as a conduit for the suction force to reach the cutting edges. This multi-functionality reduces the need for separate dedicated debris removal components.
2Productivity
If suction channels with high inclination are used, then debris removal is more effective, but shock waves experience radial deflections reducing degradation power
Solution Approach 1:
The suction channel inclination is optimized locally: the first portion has a lower inclination (less than 5 degrees) to maintain axial parallelism and prevent shock wave deflection, while the second portion has a higher inclination (15-30 degrees) to effectively draw debris into the hollow shaft. This local differentiation resolves the contradiction between effective debris removal and shock wave integrity.
Solution Approach 2:
The suction channel is divided into two distinct portions with different inclination angles. The first portion (adjacent to cutting edges) maintains low inclination to protect shock waves, while the second portion (adjacent to hollow shaft) has high inclination for effective debris intake, separating the conflicting functional requirements into distinct zones.
3Productivity
If suction openings are positioned closer to cutting edges, then debris capture is improved, but the drill head structure becomes more complex
Solution Approach 1:
The suction openings are merged with the front surface of the drill head, and the suction channels are integrated into the hollow shaft structure. This combination eliminates the need for separate suction components and simplifies the overall drill head design while maintaining effective debris capture at the cutting zone.
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
The design improves drilling efficiency by reducing radial deflections and enhancing debris removal, resulting in increased degradation power and effective chiseling machining of rock materials.
Implementation Method 1
Within the drill head are suction channels that connect the suction openings to the conveyor channel
Implementation Method 2
The shock wave of the beat runs through the hollow shaft 4 in the direction of the direction 9 Up to the drill head 2. The drill head 2 Shatters the mineral material.
Data Source
Figure 1
Figure 2~4
Figure 5~7
AI summary
The invention relates to a drill (1) for chiseling stone, the drill having an impact surface (7) on an insertion end (6), a hollow shaft (4) inside which a conveying duct (35) is provided, and a drill head (2). The drill head (2) has three or more blades (14) and one or more intake openings (3) on an end face (12). Inside the drill head (2) are intake ducts (30) which connect the intake openings (3) to the conveying duct (35). In at least one of the intake ducts (30), a first portion (32) of the intake duct (30) bordering the intake opening (3) has a first inclination relative to the drill axis (11) and a second portion (33) of the intake duct (30) bordering the hollow shaft (4) has a second inclination relative to the drill axis (11). The second inclination is larger than the first inclination.