Magnetic Base with Parallel Rails for Drill Press
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Magnetic drill press bases with multiple coils are limited in size scalability, require additional ferromagnetic material for magnetic circuit completion, and struggle with stable attachment to non-flat surfaces due to single line of contact, leading to reduced magnetic field strength and increased weight.
Innovation Solution
A magnetic base with spaced, parallel ferromagnetic rails and a single coil positioned between them, featuring chamfers on the rails for enhanced attachment to convex surfaces and reduced insulation layers for increased coil density, allowing for adjustable dimensions and improved magnetic field strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If multiple coils are used in the magnetic base, then the holding force is improved, but the device complexity and weight increase
Solution Approach 1:
The patent combines multiple coil functions into a single coil by using a segmented ferromagnetic core structure. The single coil generates a magnetic field that is distributed and focused through multiple yokes and poles, achieving the holding force of multiple coils while using only one coil assembly, thereby reducing device complexity and weight.
Solution Approach 2:
The ferromagnetic core is segmented into multiple yokes and poles that are arranged to create distributed magnetic fields. This segmentation allows a single coil to produce multiple magnetic flux paths, effectively replicating the function of multiple coils without the associated complexity and weight.
2Force
If multiple coils are used in the magnetic base, then the holding force is improved, but the weight increases
Solution Approach 1:
The patent merges multiple coil functions into a single coil by using a segmented ferromagnetic core structure. The single coil generates a magnetic field that is distributed and focused through multiple yokes and poles, achieving the holding force of multiple coils while using only one coil assembly, thereby reducing device complexity and weight.
3Device complexity
If a single line of contact is used for attachment, then the structure is simple, but the stability on non-flat surfaces deteriorates
Solution Approach 1:
The magnetic base uses multiple discrete magnetic yokes and poles that create multiple contact points with the workpiece surface. This segmented approach distributes the attachment force across multiple lines of contact rather than a single line, significantly improving stability on non-flat surfaces while maintaining structural simplicity.
4Force
If the magnetic base size is increased, then the holding force is improved, but the scalability is limited
Solution Approach 1:
The magnetic base employs a modular segmented structure with multiple yokes and poles that can be independently configured. This allows the magnetic base to be scaled and adapted to different workpiece sizes and geometries while maintaining effective holding force, as the segmented components can be arranged optimally for each application.
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
Enables stable attachment to various surfaces, including cylindrical ones, with increased magnetic field strength and reduced weight, allowing for more flexible and efficient drilling in constrained spaces while maintaining holding force across different workpiece thicknesses.
Implementation Method 1
A coil is positioned between the first and second rails for generating a holding force on the ferromagnetic workpiece
Implementation Method 2
The magnetic base includes a ferromagnetic body having spaced, substantially parallel first and second rails
Data Source
AI summary
A drill press includes a main housing, a drill unit supported by the main housing for relative movement therewith, and a magnetic base for coupling the drill press to a ferromagnetic workpiece. The magnetic base includes a ferromagnetic body having spaced, substantially parallel first and second rails. Each of the first and second rails includes a flat bottom surface engageable with the ferromagnetic workpiece. A coil is positioned between the first and second rails for generating a holding force on the ferromagnetic workpiece. The coil defines a central axis that is parallel with the bottom surface of each of the first and second rails.