Core Drill Gear Recommendation from Bit Speed Decay
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Solution Overview
Problem
Users of core drills often fail to select the optimal gear for the core bit diameter, leading to suboptimal torque and rotational speed, resulting in inefficient drilling and reduced tool lifespan.
Innovation Solution
A method that determines the core bit diameter by analyzing the rotational speed drop after the motor is deactivated, using this information to recommend the optimal gear for the user, which can be automatically set, thereby improving drilling performance and tool longevity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the user manually selects the gear based on core bit diameter, then the user has control over gear selection, but the user frequently selects non-optimal gears leading to reduced drilling efficiency and tool lifespan
Solution Approach 1:
The core drill system automatically determines the core bit diameter by analyzing the rotational speed function n(t) and autonomously provides gear recommendations without requiring user knowledge or manual input, allowing the system to serve itself in optimizing gear selection
Solution Approach 2:
The system records the rotational speed function n(t) during operation, evaluates this feedback data to determine core bit diameter, and uses this information to generate gear recommendations, creating a closed-loop system that continuously optimizes based on actual operational characteristics
2Adaptability or versatility
If the user manually selects the gear based on core bit diameter, then the user can adjust settings, but the selection is often non-optimal causing delays and reduced drilling speed
Solution Approach 1:
The system performs preliminary determination of core bit diameter and gear optimization during the operation process itself, using the rotational speed function n(t) recorded during drilling to identify the correct gear before it becomes critical, thereby preventing time losses
Solution Approach 2:
The patent replaces manual user judgment and mechanical gear selection with an automated electronic system that uses rotational speed measurements and computational evaluation to determine optimal gear settings, substituting human decision-making with automated technical systems
3Device complexity
If the core drill operates without automatic gear recommendation, then the system is simpler, but the core bit lifetime is reduced due to incorrect gear usage
Solution Approach 1:
The system uses the existing rotational speed measurement capability of the core drill for a new purpose - determining core bit diameter and providing gear recommendations - thereby extending the functionality of existing components without requiring entirely new systems
Solution Approach 2:
The rotational speed function n(t) serves as an intermediary that connects the motor operation to core bit characteristics, allowing the system to infer core bit diameter and optimal gear settings through the medium of speed measurements rather than direct sensing
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 method significantly enhances drilling efficiency and core bit lifespan by providing users with accurate gear recommendations based on existing measured variables, ensuring optimal torque and rotational speed settings.
Implementation Method 1
a function n(t) that describes the rotational speed n of a core bit of the core drill as a function of time t is used in order to determine a diameter of the core bit of the core drill, wherein the determined diameter of the core bit is used as the basis for the recommendation of the gear to be engaged
Data Source
AI summary
A method for determining a recommendation of a gear to be engaged for a core drill. In the method, it is possible to use for example a drop in a rotational speed of a core bit of the core drill in the event of sudden deactivation of the motor of the core drill in order to determine the diameter of the core bit. Alternatively, the diameter of the core bit can be determined when the drill is started up or turned on. The diameter of the core bit is then used as the basis for the recommendation of the gear to be engaged. In a second aspect, the invention relates to a core drill with which the method can be carried out.