Adjustable Nosepiece Adapter for Ergonomic Drill Alignment
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Solution Overview
Problem
Ergonomic drill motors face challenges with drill bit misalignment and inconsistent depth control, leading to off-axis and oversized holes, which require extensive rework and increase waste, as existing alignment tools are non-adjustable and incompatible with modern ergonomic drilling equipment.
Innovation Solution
An adjustable nosepiece adapter with a sleeve and lock nut is mounted to the ergonomic drill motor, featuring a drill bushing for alignment and a pressure foot with a coil spring for feed control, allowing precise axial adjustment and depth management of drill bits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If Sheridan-type alignment equipment is used with large drill motors, then drill bit alignment accuracy is improved, but the equipment becomes incompatible with modern ergonomic drill motors and loses adaptability
Solution Approach 1:
The alignment device incorporates adjustable components including a telescoping guide bushing with lockable positioning and an adjustable depth stop mechanism, allowing the device to adapt to different drill motor sizes and drilling requirements while maintaining alignment precision
Solution Approach 2:
The device combines multiple functions in one tool: guide bushing for alignment, depth stop for penetration control, and adjustable mounting to accommodate various ergonomic drill motor sizes, making it universally applicable across different drilling applications
2Device complexity
If manual alignment methods are used with ergonomic drill motors, then device simplicity is maintained, but drill bit alignment accuracy and depth control deteriorate
Solution Approach 1:
The device merges the guide bushing, depth stop, and mounting mechanism into a single integrated attachment that mounts directly to the ergonomic drill motor, combining alignment and depth control functions without requiring separate manual alignment tools
Solution Approach 2:
The guide bushing acts as an intermediary component between the drill bit and the workpiece/template, providing a physical reference that ensures accurate alignment while the depth stop serves as an intermediary to control penetration depth, both maintaining simplicity while improving precision
3Device complexity
If non-adjustable alignment equipment is used, then device complexity is reduced, but the range of operation and adaptability to different drill bit lengths is limited
Solution Approach 1:
The telescoping guide bushing with lockable positions and the adjustable depth stop provide dynamic adaptability to different drill bit lengths and drilling depths while maintaining a relatively simple device structure through straightforward adjustment mechanisms
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 solution ensures accurate alignment and controlled depth of drill bits, reducing operator error and extending drill bit life by providing a precise and ergonomic method for hole formation.
Implementation Method 1
A coil spring is located in the pressure foot and allows the guide bushing to telescope within the pressure foot
Data Source
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AI summary
A system, method, and apparatus for the rigid alignment of drill bits (23) with ergonomic drill motors (13,17) is disclosed. An adjustable nosepiece adapter (41) is mounted to the ergonomic drill motor adjacent the drill bit chuck (21). The adapter (41) has a split clamp portion (45) on its distal end for receiving a pressure foot (61). A guide bushing (71) fits in the proximal end of the pressure foot (61). A coil spring (65) is located in the pressure foot (61) and allows the guide bushing (71) to telescope within the pressure foot (61). The drill bit (23) extends through the guide bushing (71), pressure foot (61), and adapter (41) and is secured to the chuck (21). The distal end of the guide bushing (71) fits closely within a hole (83) in a template (81) that is secured to the workpiece (91) to provide holes that are more accurately formed in the workpiece (91).