Guided Screw Driver Alignment Using Retractable Guide Legs
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Solution Overview
Problem
Existing driver devices face challenges in maintaining the desired angle during the insertion of drill bits, screws, or bolts into objects, leading to errors that can result in misalignment, damage, or failure in applications requiring precise angles, especially in high-torque or complex constructions.
Innovation Solution
The implementation of guide legs with guide-leg tracks and pressure sensors that monitor and maintain the angle of the driver device, triggering a fault response if deviations occur, ensuring the driver device stays aligned with the desired angle through proportional deployment and pressure feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the driver device operates without guide legs and angle monitoring, then the device complexity is reduced and ease of operation is improved, but the manufacturing precision and reliability deteriorate due to angle deviations during driving
Solution Approach 1:
Guide legs are introduced as intermediary elements that contact the workpiece surface to maintain the driver device at the desired angle. These guide legs act as mechanical mediators between the driver device and the workpiece, ensuring proper orientation without requiring complex active control systems.
Solution Approach 2:
Pressure sensors mounted on the guide legs provide feedback about the deployment state and contact force. This feedback mechanism allows the system to monitor whether the guide legs are properly engaged with the workpiece surface, enabling detection of angle deviations and triggering appropriate fault responses.
2Reliability
If guide legs with pressure sensors are deployed to monitor angle, then the reliability and manufacturing precision are improved, but the device complexity and loss of time for setup increase
Solution Approach 1:
The guide legs are pre-configured with pressure sensors and deployment mechanisms before the driving operation begins. The system performs preliminary checks to ensure the guide legs are properly positioned and the pressure sensors are functional, preventing delays during the actual driving operation.
Solution Approach 2:
The guide legs automatically deploy and retract based on the driving cycle. During the approach phase, the guide legs extend and make contact with the workpiece surface. During the driving phase, they retract to avoid interference. This automatic self-service behavior eliminates the need for manual adjustment and reduces setup time.
3Ease of operation
If the guide legs retract during driving, then the ease of operation is improved and interference with the driving object is reduced, but the measurement precision and reliability deteriorate if the guide legs lose contact with the surface
Solution Approach 1:
The guide legs exhibit periodic deployment and retraction behavior synchronized with the driving cycle. They deploy during the approach and positioning phases to establish angle reference, then retract during the high-torque driving phase to avoid interference. This periodic action pattern optimizes both measurement precision and ease of operation at different stages.
Solution Approach 2:
The guide legs are designed with dynamic deployment capability, allowing them to extend and retract based on operational requirements. This dynamic behavior enables the system to have guide legs engaged with the workpiece surface during positioning for precise angle monitoring, then disengage during driving to prevent interference with the driving object.
4Manufacturing precision
If pressure sensors monitor the guide leg contact force, then the manufacturing precision and reliability are improved through fault detection, but the device complexity and use of energy increase
Solution Approach 1:
The pressure sensors provide more monitoring capability than strictly necessary for basic angle detection. They measure contact force magnitude in addition to presence, enabling comprehensive fault detection including improper surface contact, incorrect driving angle, and abnormal resistance forces. This excessive monitoring capability ensures high manufacturing precision while the energy consumption remains acceptable due to intermittent rather than continuous operation.
Data Source
AI summary
A driver device comprises a housing and a driving-bit socket in the housing. The driver device may comprise a first guide-leg track on the housing. A first guide leg may be inserted into the first guide leg track. The driver device may also comprise a first guide-leg foot at an end of the first guide leg. The first guide-leg foot may be configured to interface with a surface of the driving recipient. The first guide leg may retract into the first guide-leg track as the driver device drives a driving object into the driving recipient.